WO2023090302A1 - 活性エネルギー線硬化性組成物 - Google Patents
活性エネルギー線硬化性組成物 Download PDFInfo
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- WO2023090302A1 WO2023090302A1 PCT/JP2022/042300 JP2022042300W WO2023090302A1 WO 2023090302 A1 WO2023090302 A1 WO 2023090302A1 JP 2022042300 W JP2022042300 W JP 2022042300W WO 2023090302 A1 WO2023090302 A1 WO 2023090302A1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/101—Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
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- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
- A61K8/8152—Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q3/00—Manicure or pedicure preparations
- A61Q3/02—Nail coatings
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- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
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- C08F2/00—Processes of polymerisation
- C08F2/46—Polymerisation initiated by wave energy or particle radiation
- C08F2/48—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light
- C08F2/50—Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light with sensitising agents
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- C08F220/04—Acids; Metal salts or ammonium salts thereof
- C08F220/06—Acrylic acid; Methacrylic acid; Metal salts or ammonium salts thereof
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- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/34—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/52—Amides or imides
- C08F220/54—Amides, e.g. N,N-dimethylacrylamide or N-isopropylacrylamide
- C08F220/56—Acrylamide; Methacrylamide
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/10—Esters
- C08F222/1006—Esters of polyhydric alcohols or polyhydric phenols
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
- C08F222/10—Esters
- C08F222/1006—Esters of polyhydric alcohols or polyhydric phenols
- C08F222/102—Esters of polyhydric alcohols or polyhydric phenols of dialcohols, e.g. ethylene glycol di(meth)acrylate or 1,4-butanediol dimethacrylate
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F290/00—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
- C08F290/02—Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated end groups
- C08F290/06—Polymers provided for in subclass C08G
- C08F290/067—Polyurethanes; Polyureas
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- C09D11/00—Inks
- C09D11/02—Printing inks
- C09D11/10—Printing inks based on artificial resins
- C09D11/106—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C09D11/107—Printing inks based on artificial resins containing macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from unsaturated acids or derivatives thereof
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- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
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- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J4/00—Adhesives based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; adhesives, based on monomers of macromolecular compounds of groups C09J183/00 - C09J183/16
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
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- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61K2800/80—Process related aspects concerning the preparation of the cosmetic composition or the storage or application thereof
- A61K2800/81—Preparation or application process involves irradiation
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- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/30—Additional features of adhesives in the form of films or foils characterized by the chemical, physicochemical or physical properties of the adhesive or the carrier
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- C09J2467/00—Presence of polyester
Definitions
- the present invention provides an active energy ray-curable composition, a curable ink composition containing the same, an adhesive composition, an adhesive composition, a sealant composition, a coating composition, a nail cosmetic, and a decorative coating agent. , dental materials and cured products obtained by curing them.
- An active energy ray-curable composition is generally composed of a plurality of polymerizable components and a photopolymerization initiator, and is transformed from a liquid to a short It solidifies (cures) over time and is used in coating agents, paints, pressure sensitive adhesives, adhesives, elastomer materials, materials for flexible displays, inkjet inks, sealing materials and sealants, dental hygiene materials, optics. It is used in a wide range of fields such as In particular, since it can be cured in any place and in any shape, it is widely used as nail cosmetics such as gel nails and as a material for two-dimensional or three-dimensional stereolithography.
- polymerizable oligomers such as urethane acrylates and epoxy acrylates
- polyfunctional monomers such as urethane acrylates and epoxy acrylates
- photopolymerization initiators are blended as main components.
- Additives such as agents, viscosity modifiers, and polymerization inhibitors can be added.
- Patent Document 1 describes (meth)acrylates having an alicyclic skeleton as monofunctional monomers, N-substituted (meth)acrylamides, (meth)acrylates having a linear or branched alkyl group having 8 to 18 carbon atoms, An active energy ray-curable composition containing a (meth)acrylate having a urethane group as a polymerizable oligomer and a photopolymerization initiator is described. It has been proposed to provide a cured product capable of achieving both high elongation and high elastic modulus at high levels by blending these components in specific proportions.
- monofunctional (meth)acrylates having an alicyclic skeleton and monofunctional (meth)acrylates having a linear or branched alkyl group having 8 to 18 carbon atoms are used from the viewpoint of the elongation and elastic modulus of the cured product.
- Preferred are N-substituted (meth)acrylamides having extremely short-chain alkyl groups such as dimethyl and diethyl from the viewpoint of curability, and urethanes having 1 to 2 (meth)acryl groups from the viewpoint of elongation of the cured product.
- (meth)acrylate is preferable, the transparency of the curable composition and the transparency of the resulting cured product, heat resistance, impact resistance, durability, water resistance, etc.
- (Meth)acrylates having an alicyclic skeleton and (meth)acrylates having a linear or branched alkyl group with 8 to 18 carbon atoms are both highly hydrophobic and have high steric hindrance, so they are characterized by low curability.
- N-substituted (meth)acrylamides having short-chain alkyl groups are known to have high hydrophilicity and curability. With such a combination of components, the curable composition and its cured product cannot be expected to exhibit good transparency, and there is a problem that it is difficult to use them in the optical field such as optical members.
- Patent Document 2 describes an active energy ray-curable resin composition containing a polycyclic carboxamide having a (meth)acryloyl group.
- the curable resin composition described in the patent document had good UV curability, and the resulting cured film had good surface hardness as a hard coat.
- the present invention has a wide variety of properties required for active energy ray-curable compositions, particularly high transparency, high curability against LED light, and curing shrinkage resistance, which have been difficult to achieve in the past.
- An object of the present invention is to provide a novel active energy ray-curable composition that can be used side by side.
- the present invention has a wide variety of properties required for a cured product of an active energy ray-curable composition, particularly transparency, heat resistance, impact resistance, and water resistance, which have been difficult to achieve in the past. It is another object of the present invention to provide a cured product which can simultaneously have good properties, durability and impact resistance.
- a (meth)acrylate (A) having an amide group and a cyclic substituent in the molecule and a polymerizable compound (A) having one or more ethylenically unsaturated groups in the molecule B) A polymerizable compound (b1) containing (excluding A) and having at least a chain substituent having 1 to 36 carbon atoms as the polymerizable compound (B) and/or a cyclic substituent having 3 to 20 carbon atoms
- an active energy ray-curable composition containing a polymerizable compound (b2) having a group can solve the above problems, and completed the present invention.
- the present invention is based on the following configurations.
- the polymerizable compound (B) is an active energy ray containing a polymerizable compound (b1) having a chain substituent having 1 to 36 carbon atoms and/or a polymerizable compound (b2) having a cyclic substituent having 3 to 20 carbon atoms.
- Curable composition is an active energy ray containing a polymerizable compound (b1) having a chain substituent having 1 to 36 carbon atoms and/or a polymerizable compound (b2) having a cyclic substituent having 3 to 20 carbon atoms.
- (meth)acrylate (A) is a saturated or unsaturated polycyclic aliphatic ring, a monocyclic or polycyclic aromatic ring, a saturated or unsaturated aliphatic heterocyclic ring as a cyclic substituent;
- the active energy ray-curable composition according to (1) above which is one or more substituents selected from aromatic heterocycles.
- (3) The active energy ray-curable composition according to (1) or (2) above, wherein the (meth)acrylate (A) has an amide group between the (meth)acrylate group and the cyclic substituent.
- Polymerizable compound (B) contains ethylenically unsaturated groups such as (meth)acrylamide group, (meth)acrylate group, vinyl group, vinyl ether group, alkyl vinyl ether group, allyl group, (meth)allyl ether group and maleimide.
- the active energy ray-curable composition according to any one of (1) to (3) above, which has one or more groups selected from groups.
- the content of (meth)acrylate (A) is 0.1 to 99.5% by mass, and the content of polymerizable compound (b1) is 0.3 to 80% by mass, based on the entire active energy ray-curable composition.
- a nail cosmetic containing the active energy ray-curable composition according to any one of (1) to (7) above.
- a decorative coating agent containing the active energy ray-curable composition according to any one of (1) to (7) above.
- a dental material containing the active energy ray-curable composition according to any one of (1) to (7) above.
- a (meth)acrylate having a specific structure (A) and an active energy ray-curable composition containing a polymerizable compound (B) excluding A has well-balanced amphiphilicity and Due to its high curability, it shows good compatibility with various types of B, from hydrophobic to hydrophilic, from monofunctional to polyfunctional, and has high transparency and curability.
- both the (meth)acrylate (A) and b2 are bulky cyclic Due to the presence of substituents, volume shrinkage during the curing process is low, and the resulting cured product is excellent in both transparency and heat resistance.
- the active energy ray-curable composition containing A and b1 and b2 has high curability, low curing shrinkage, easy to maintain a good compatible state, and the obtained cured product has transparency, heat resistance and durability. There is good.
- (Meth)acrylate (A) has a cyclic substituent in the molecule and has a high refractive index. Due to the interaction between the cyclic substituent and the amide group in the molecule, the glass transition temperature (Tg) of the homopolymer of (meth)acrylate (A) is higher than that of ordinary cyclic polymers.
- Tg glass transition temperature
- the cured product obtained from the active energy ray-curable composition containing the (meth)acrylate (A) having such a specific structure and the polymerizable compound (B) has high transparency, heat resistance, durability and resistance. Impact has been achieved.
- the activity of the present invention The cured product obtained from the energy ray-curable composition was highly resistant to yellowing and water.
- the (meth)acrylate (A) has an unsaturated polycyclic aliphatic ring and/or an unsaturated aliphatic heterocyclic ring, the unsaturated bond of the ring partially undergoes a polymerization reaction due to irradiation with active energy rays.
- A are special monomers between monofunctional and polyfunctional, and the resulting cured product has excellent impact resistance.
- the active energy ray-curable composition of the present invention is highly safe for LED rays (wavelengths 365 nm, 385 nm, 395 nm, 405 nm) even for general-purpose UV ink curing metal halide lamp rays (wavelength range 250 to 450 nm).
- LED rays wavelengths 365 nm, 385 nm, 395 nm, 405 nm
- it has high curability, and the liquid viscosity of the curable composition can be adjusted almost unlimitedly from low viscosity to high viscosity according to the application, inkjet printing, screen printing, offset printing, flexographic printing, etc. It can be provided as a curable ink composition for printing and a curable ink composition for two-dimensional or three-dimensional modeling.
- the active energy ray-curable composition of the present invention has high wettability and adhesion to various substrates from low-polarity plastics to high-polarity glass and metals, and can be used as a curable pressure-sensitive adhesive composition or adhesive composition. , coating compositions, sealant compositions, nail cosmetics, decorative coating agents used for decorative films and decorative sheets, dental materials, and the like.
- the (meth)acrylate (A) has an unsaturated polycyclic aliphatic ring and/or an unsaturated aliphatic heterocyclic ring
- the (meth)acrylate group is polymerized by photopolymerization, followed by thermal polymerization. These unsaturated groups can be polymerized, and the active energy ray-curable composition of the present invention is suitably used for adhesion of opaque materials such as metals and adhesion of dissimilar materials.
- the first to fifth embodiments of the present invention are active energy ray-curable compositions (E).
- the active energy ray-curable composition (E) according to the present embodiment (hereinafter also simply referred to as “curable composition (E)”) is a (meth)acrylate having an amide group and a cyclic substituent in the molecule ( A) and a polymerizable compound (B) (excluding A) having one or more ethylenically unsaturated groups in the molecule, wherein B is a polymerizable compound having a chain substituent having 1 to 36 carbon atoms. It contains (b1) and/or a polymerizable compound (b2) having a cyclic substituent having 3 to 20 carbon atoms.
- the active energy ray-curable composition (E) has high curability, while curing shrinkage during curing of E is suppressed. Due to the interaction of A and B, the transparency of E is improved, curing shrinkage of E is further reduced, and the cured product of E has high yellowing resistance and water resistance. Moreover, since E contains A and b2, the cured product of E has high heat resistance and durability.
- the content of the (meth)acrylate (A) is 0.1 to 99.5% by mass, and the content of the polymerizable compound (b1) is 0.1 to 99.5% by mass, based on the total mass of the active energy ray-curable composition (E). 3 to 80% by mass, the content of the polymerizable compound (b2) is preferably 0.2 to 70% by mass, and the total content of b1 and b2 is more preferably 0.5% by mass or more. . If the contents of A, b1, and b2 are within these ranges, the transparency, curability, and curing shrinkage resistance of E can be achieved in parallel, and the resulting cured product has transparency, heat resistance, and yellowing resistance. , durability and water resistance can be combined.
- the content of A is 1 to 95% by mass
- the content of b1 is 5 to 70% by mass
- the content of b2 is The amount is more preferably 2 to 60% by mass
- the content of A is 5 to 90% by mass
- the content of b1 is 10 to 60% by mass
- the content of b2 is 5 to 50% by mass.
- the content of A is 1 to 95% by mass
- the content of b1 is 5 to 70% by mass
- the content of b2 is The amount is more preferably 2 to 60% by mass
- the content of A is 5 to 90% by mass
- the content of b1 is 10 to 60% by mass
- the content of b2 is 5 to 50% by mass.
- (Meth)acrylate (A) having an amide group and a cyclic substituent in the molecule has one or more amide groups and one or more cyclic substituents in the molecule, and one methacrylate group and/or acrylate group There is no particular limitation as long as the compound has one or more.
- the cyclic substituent is one or more substituents selected from monocyclic or polycyclic aliphatic rings, monocyclic or polycyclic aromatic rings, aliphatic heterocycles, and aromatic heterocycles.
- substituents may be saturated rings or unsaturated rings, for example, cyclohexyl group, dicyclopentanyl group, dicyclopentenyl group, bornyl group, isobornyl group, adamantyl group, norbornane group, norbornene group, oxanorbornane group, oxanorbornene group, azanorbornane group, azanorbornene group, tricyclodecane group, phenyl group, naphthalene group, triphenylene group, pyrene group, perylene group, indacene group, biphenylene group, acenaphthylene group , phenalene group, anthracene group, cyclohexylphenyl group, 4-morpholinophenyl group, various bisphenol groups, bisoxazoline group and the like.
- These cyclic substituents may have only one type, or may have two or more types.
- the (meth)acrylate (A) may further have a substituent (R) on its cyclic substituent.
- R is a linear alkyl group or hydroxyalkylene group having 1 to 6 carbon atoms which may be substituted with an ethylenically unsaturated bond, an alkenyl group or alkyleneoxyalkyl group having 2 to 6 carbon atoms, or 3 carbon atoms.
- the ethylenically unsaturated group in R is a (meth)acrylate group, (meth)acrylamide group, vinyl group, vinyl ether group, alkyl vinyl ether group, allyl group, (meth)allyl It is one or more groups selected from the group consisting of an ether group and a maleimide group.
- the cyclic substituent of A may be a saturated ring or an unsaturated ring. It is preferred that the cyclic substituent of A is an unsaturated ring and/or that the substituent R has an ethylenically unsaturated group.
- A has two or more unsaturated groups in the molecule, the curability of the active energy ray-curable composition (E) becomes higher, and the resulting cured product has heat resistance, durability, and water resistance. properties, etc. can be further improved.
- the unsaturated group of the unsaturated ring of A and/or the ethylenically unsaturated group of the substituent R is more preferably a group other than a (meth)methacrylate group.
- A has two or more unsaturated groups with different structures in the molecule, and by adjusting the type and intensity of the active energy ray, the two or more different unsaturated groups are cured in order. It is possible to gradually increase the cross-linking rate of the cured product while suppressing the curing shrinkage rate, and it is possible to obtain a cured product having excellent impact resistance.
- the amide group of the (meth)acrylate (A) includes a secondary amide group (N-substituted amide), a tertiary amide group (N,N-disubstituted amide), a diacetamide group, an N-substituted diacetamide group, and the like. is mentioned.
- A preferably has an amide group between the (meth)acrylate group and the cyclic substituent. In that case, the effect of the interaction between the amide group and the (meth)acrylate group and/or the interaction between the amide group and the cyclic substituent can be exhibited more efficiently than when each of these groups acts alone.
- the (meth)acrylate group and the amide group are linked by a linear or branched alkylene group (first linking group) having 1 to 6 carbon atoms, and the amide group and the cyclic substituent are directly linked or It is preferable that they are linked by a linear or branched alkylene group (second linking group) having 1 to 6 carbon atoms.
- first linking group having 1 to 6 carbon atoms
- second linking group having 1 to 6 carbon atoms.
- the active energy ray of the (meth)acrylate group is improved, and yellowing of the cured product over time due to the amide group is reduced, which is more preferable.
- the cyclic substituent is an unsaturated ring, it is particularly preferable because the curability against active energy rays is further improved.
- (Meth)acrylate (A) can be synthesized by a known method.
- a compound having a hydroxy group and an amino group is subjected to an amidation reaction to obtain a carboxamide compound having a hydroxy group and a cyclic substituent.
- (Meth)acrylate (A) includes (meth)acryloyloxymethylenenorbornanecarboxamide, (meth)acryloyloxyethylenenorbornanecarboxamide, (meth)acryloyloxy (iso)propylenenorbornanecarboxamide, (meth)acryloyloxy (iso ) Butylene norbornane carboxamide, (meth) acryloyloxy (iso) amylene norbornane carboxamide, (meth) acryloyloxy (iso) hexylene norbornane carboxamide, (meth) acryloyloxy alkylene norbornane carboxamide, (meth) acryloyloxy Methylenebornene carboxamide, (meth) acryloyloxy ethylene norbornene carboxamide, (meth) acryloyloxy (iso) propylene norbornene carboxamide, (meth) acryloyloxy (iso) butylene nor
- the polymerizable compound (B) is a compound having one or more ethylenically unsaturated groups in the molecule.
- the ethylenically unsaturated group of B is one or more selected from a (meth)acrylate group, a (meth)acrylamide group, a vinyl group, a vinyl ether group, an alkyl vinyl ether group, an allyl group, a (meth)allyl ether group and a maleimide group. and an acrylamide group and an acrylate group from the viewpoint of having high curability to active energy rays.
- B contains a polymerizable compound (b1) having a chain substituent having 1 to 36 carbon atoms and/or a polymerizable compound (b2) having a cyclic substituent having 3 to 20 carbon atoms (excluding A and b1)
- b1 and b2 are both a monofunctional polymerizable compound having one ethylenically unsaturated group in the molecule (hereinafter also referred to as a monofunctional monomer) and a polyfunctional polymer having two or more ethylenically unsaturated groups in the molecule. (hereinafter also referred to as a polyfunctional monomer), and may also contain a polymerizable compound (b3) having one or more ethylenically unsaturated groups in its molecule, except for b1 and b2.
- the active energy ray-curable composition (E) contains a polymerizable compound (b1) or a polymerizable compound (b2), and from the viewpoint of further improving various physical properties, contains both b1 and b2. is preferred.
- E improves, for example, the viscosity, pigment dispersibility, printability, etc. of an ink composition for inkjet, the modeling accuracy, the strength of a model, etc., in a curable composition for three-dimensional stereolithography.
- Adhesion in the composition, reworkability, yellowing resistance, etc., adhesive strength in the adhesive composition, impact resistance, etc., wettability to the substrate in the coating composition, surface hardness of the resulting coating film, etc. can be optimized for From this point of view, the mass ratio of the contents of b1 and b2 is more preferably 30/1 to 1/10, particularly preferably 10/1 to 1/5.
- the polymerizable compound (b1) has one or more ethylenically unsaturated groups and a chain substituent having 1 to 36 carbon atoms in the molecule, and the chain substituent may be linear or branched, saturated Alkyl groups or unsaturated alkenyl groups may be used, and they may be hydroxyl groups, primary amino groups, secondary amino groups, tertiary amino groups, thiol groups, ether groups, ester groups, ketone groups, carboxylic acid groups, It may have an amide group, a sulfonic acid group, or the like, or may be substituted.
- the ethylenically unsaturated group of b1 is selected from the group consisting of a (meth)acrylate group, a (meth)acrylamide group, a vinyl group, a vinyl ether group, an alkyl vinyl ether group, an allyl group, a (meth)allyl ether group and a maleimide group. It is preferably an acrylamide group or an acrylate group from the viewpoint of having one or more ethylenically unsaturated groups and having high curability with respect to active energy rays.
- a monofunctional polymerizable compound having an acrylamide group linear or branched N-substituted alkylacrylamides having 1 to 36 carbon atoms, N,N-disubstituted dialkylacrylamides having 1 to 36 carbon atoms, linear Chain or branched N-substituted alkenyl acrylamides, straight or branched chain N,N-disubstituted dialkenyl acrylamides having 1 to 36 carbon atoms, straight or branched chain N,N-disubstituted Substituted alkylalkenyl acrylamides; having or being substituted with one or more hydroxy groups, primary to tertiary amino groups, thiol groups, ether groups, ester groups, ketone groups, carboxylic acid groups, amide groups, sulfonic acid groups, etc.
- N-substituted alkylacrylamides having 1 to 36 carbon atoms straight or branched chain N-substituted alkylacrylamides having 1 to 36 carbon atoms, N,N-disubstituted dialkylacrylamides having 1 to 36 carbon atoms, straight or branched chain N-substituted alkenyl acrylamides having 1 to 36 carbon atoms, and 1 carbon atom.
- linear or branched chain N,N-disubstituted dialkenyl acrylamides having 1 to 36 carbon atoms straight or branched chain N,N-disubstituted alkylalkenyl acrylamides having 1 to 36 carbon atoms, and the like.
- One of these monofunctional polymerizable compounds having an acrylamide group may be used alone, or two or more thereof may be used in combination.
- polyfunctional polymerizable compounds having an acrylamide group methylenebis(meth)acrylamide, ethylenebis(meth)acrylamide, diallyl(meth)acrylamide, N-[tris(3-(meth)acrylamidopropoxymethyl)methyl ] (meth)acrylamide, N,N-bis(2-(meth)acrylamidoethyl)(meth)acrylamide, 4,7,10-trioxa-1,13-tridecanebis(meth)acrylamide, N,N′-1, 2-ethanedylbis[N-(2-(meth)acrylamidoethyl)](meth)acrylamide and other polyfunctional polymerizable compounds having monomeric acrylamide groups, oligomeric acrylamides such as polyurethane diacrylamide having no cyclic substituents group-containing polyfunctional polymerizable compounds.
- One of these polyfunctional polymerizable compounds having an acrylamide group may be used alone, or two or more thereof may be used in combination
- linear or branched alkyl acrylates having 1 to 36 carbon atoms linear or branched alkenyl acrylates having 1 to 36 carbon atoms; hydroxy group, primary to tertiary amino group, thiol group, ether group, ester group, ketone group, carboxylic acid group, amide group, sulfonic acid group, etc., having 1 to 36 carbon atoms or substituted Chain or branched alkyl acrylates, straight or branched chain alkenyl acrylates having 1 to 36 carbon atoms, and the like can be mentioned.
- butyl acrylate, 2-ethylhexyl acrylate, stearyl acrylate, 2-(2-ethoxyethoxy)ethyl acrylate, hydroxyethyl acrylate, 4-hydroxybutyl acrylate and the like are mentioned from the viewpoint of easy availability of industrial products. be done.
- Examples of the polyfunctional polymerizable compound having an acrylate group in b1 include ethylene glycol diacrylate, diethylene glycol diacrylate, methoxydipropylene glycol acrylate, methoxytripropylene glycol acrylate, 1,4-butanediol diacrylate, 1, 6-hexanediol diacrylate, 1,6-hexanediol ethylene oxide-modified diacrylate, neopentyl glycol hydroxypivalate diacrylate, glycerin diacrylate, pentaerythritol tetraacrylate, pentaerythritol triacrylate, pentaerythritol diacrylate, dipentaerythritol Monomers such as triacrylate, dipentaerythritol hexaacrylate, dipentaerythritol pentaacrylate, dipentaerythritol tetraacrylate, ethylene glycol diglycidy
- polyfunctional polymerizable compounds having type acrylate groups polyether diacrylates such as polyethylene glycol diacrylate, polypropylene glycol diacrylate and polytetramethylene glycol diacrylate, oligomer type acrylate groups such as polyurethane diacrylate and polyester diacrylate. and a polyfunctional polymerizable compound having One of these polyfunctional polymerizable compounds having an acrylate group may be used alone, or two or more thereof may be used in combination.
- the polymerizable compound (b2) has one or more ethylenically unsaturated groups and a cyclic substituent having 3 to 20 carbon atoms in the molecule, and the cyclic substituent is a monocyclic or polycyclic aliphatic ring.
- an aromatic ring, an aliphatic heterocyclic ring, a monocyclic or polycyclic aromatic heterocyclic ring, and the aliphatic ring and the aliphatic heterocyclic ring are saturated rings. may be an unsaturated ring.
- the ethylenically unsaturated group of b2 is selected from the group consisting of a (meth)acrylate group, a (meth)acrylamide group, a vinyl group, a vinyl ether group, an alkyl vinyl ether group, an allyl group, a (meth)allyl ether group and a maleimide group. It is preferably an acrylamide group or an acrylate group from the viewpoint of having one or more ethylenically unsaturated groups and having high curability with respect to active energy rays.
- the ethylenically unsaturated group of b2 is a (meth)acrylate group, it does not have an amide group in the molecule.
- the ethylenically unsaturated group of b2 is a (meth)acrylamide group, it does not have a (meth)acrylate group in the molecule.
- the monofunctional polymerizable compound having an acrylamide group includes N-cyclohexylacrylamide, N,N-dicyclohexylacrylamide, N-cyclohexyl-N-methylacrylamide, N-cyclohexyl-N-ethylacrylamide, N-cyclohexyl- N-propylacrylamide, N-cyclohexyl-N-butylacrylamide, N-phenylacrylamide, N-acryloylmorpholine, N-acryloylpiperidine, N-acryloyl-2-methylpiperidine, N-acryloyl-3-methylpiperidine, N- Acryloyl-4-methylpiperidine, N-acryloyl-2,6-dimethylpiperidine, N-acryloyl-3,5-dimethylpiperidine, N-acryloyl-3,3-dimethylpiperidine, N-acryloyl-4,4-dimethylpiperidine , N-acryloyl-2
- N-cyclohexylacrylamide, N,N-dicyclohexylacrylamide, N-cyclohexyl-N-methylacrylamide, N-acryloylmorpholine, N-acryloylpiperidine, N- Acryloyl-2-methylpiperidine, N-acryloyl-4-methylpiperidine, N-acryloyl-2,6-dimethylpiperidine, N-acryloyl-3,5-dimethylpiperidine, N-phenylacrylamide, dopamine acrylamide, 3-acrylamidophenyl Boronic acids are preferred.
- Examples of the polyfunctional polymerizable compound having an acrylamide group in b2 include polyfunctional polymerizable compounds having an acrylamide group, such as oligomer type polyurethane diacrylamide having a cyclic substituent.
- polyfunctional polymerizable compounds having an acrylamide group may be used alone, or two or more thereof may be used in combination.
- the monofunctional polymerizable compound having an acrylate group in b2 includes phenoxyethyl acrylate, phenoxydiethylene glycol acrylate, phenoxytetraethylene glycol acrylate, phenoxyhexaethylene glycol acrylate, cyclohexyl acrylate, tert-butylcyclohexyl acrylate, benzyl acrylate, and dicyclo pentenyl acrylate, dicyclopentenyl acrylate, bornyl acrylate, isobornyl acrylate, tetrahydrofurfuryl acrylate, 2-methyl-2-adamantyl (meth)acrylate and the like.
- phenoxyethyl acrylate, cyclohexyl acrylate, tert-butylcyclohexyl acrylate, dicyclopentanyl acrylate, dicyclopentenyl acrylate, isobornyl acrylate, and tetrahydrofurfuryl acrylate are used from the viewpoint of easy availability of industrial products. preferable.
- the polyfunctional polymerizable compound having an acrylate group includes dicyclopentanyl diacrylate, caprolactone-modified dicyclopentenyl diacrylate, tricyclodecanedimethanol diacrylate, ethylene oxide-modified bisphenol A-type diacrylate, and propylene oxide.
- Polyfunctional polymerizable compounds having oligomer type acrylate groups, such as polyether diacrylate can be mentioned.
- One of these polyfunctional polymerizable compounds having an acrylate group may be used alone, or two or more thereof may be used in combination.
- the monofunctional polymerizable compound in the active energy ray-curable composition (E), including the (meth)acrylate (A) and the polymerizable compound (B), is 5 to 99% by mass with respect to the entire E. is preferred.
- the polyfunctional polymerizable compound in E, including A and B, is preferably 1 to 95% by mass based on the total amount of E. If the monofunctional polymerizable compound and the polyfunctional polymerizable compound in E are within these ranges, it becomes possible to easily combine each compound having a different structure depending on the purpose, and E is suitable for various uses. can be used. From this point of view, the total amount of monofunctional polymerizable compounds in E is more preferably 10 to 90% by mass, particularly preferably 20 to 80% by mass. Further, the total content of polyfunctional polymerizable compounds in E is more preferably 5 to 90% by mass, particularly preferably 10 to 80% by mass.
- a sixth embodiment of the present invention is an active energy ray-curable composition (E) having a volume shrinkage (cure shrinkage) of 5% or less during the curing process under active energy ray irradiation.
- E preferably contains 5% by mass or more of (meth)acrylate (A) and 60% by mass or less of a polyfunctional polymerizable compound as a polymerizable compound (B) with respect to the entire E, and A It is more preferable to contain 8% or more and 50% by mass or less of a polyfunctional polymerizable compound as B.
- containing 5% by mass or more of an oligomer type polyfunctional polymerizable compound and / or 2% by mass or more of a polymer type polyfunctional polymerizable compound as B maintains the curing shrinkage rate low. It is particularly preferable because the impact resistance of the resulting cured product can be imparted while being cured.
- a seventh embodiment of the present invention is an active energy ray-curable composition (E) having a saturated water absorption of 10% or less in a cured product of the active energy curable composition.
- E contains 5% by mass or more of (meth)acrylate (A) and 20% by mass or more of a compound having a chain or cyclic substituent having 6 or more carbon atoms as a polymerizable compound (B) with respect to the entire E. It is preferable to contain 10% or more of A, and more preferably 25% or more of b1 or b2 having a chain substituent having 6 or more carbon atoms as B.
- E 8 mass% or more of a compound having an oligomer type chain or cyclic substituent having 6 or more carbon atoms as B and / or the above having a polymer type chain substituent having 6 or more carbon atoms Containing b1 or b2 in an amount of 3% by mass or more is particularly preferable because it is confirmed that the resulting cured product has a low water absorption rate and at the same time has a tendency to improve the durability of the cured product.
- An eighth embodiment of the present invention is an ink composition (hereinafter also referred to as ink).
- the ink composition contains the active energy ray-curable composition (E) according to the first to seventh embodiments.
- the ink composition contains 3 to 50% by mass of (meth)acrylate (A), which is a component of E, 20 to 80% by mass of the polymerizable compound (b1), and 0 to 70% by mass of the polymerizable compound (b2). preferably.
- A the ink composition has high curability, and the resulting printed surface has good surface drying properties.
- the viscosity of the ink composition can be easily adjusted, the pigment dispersibility when blended is good, and the ejection stability of the ink composition during printing is high.
- the ink composition has sufficient curability even if b2 is not contained. Both drying properties are improved. Furthermore, by combining A, b1, and b2, the viscosity of the ink composition can be suitably adjusted according to the printing method, and the resulting printed surface has excellent print clarity.
- a conventionally known method can be used as a method of applying the ink composition to the substrate.
- the viscosity of the ink composition at 25° C. is preferably less than 500 mPa ⁇ s, and more preferably less than 100 mPa ⁇ s from the viewpoint of being able to be applied to a substrate by an inkjet method.
- the ink composition After the ink composition is applied to the substrate, it is cured by irradiation with active energy rays to form a printing surface (ink layer or printing layer). From the viewpoint of being able to exhibit well-balanced printing properties such as viscosity, pigment dispersibility, curability, ejection stability, and surface dryness and definition of the resulting printed surface, the ink composition has A of 8 to 45. It is preferable to contain 30 to 80% by mass of b1 and 5 to 65% by mass of b2, and 10 to 40% by mass of A, 40 to 60% by mass of b1, and 10 to 50% by mass of b2. is more preferred.
- the ninth embodiment of the present invention is a two-dimensional or three-dimensional modeling ink composition (hereinafter also referred to as a modeling ink composition or modeling ink).
- the modeling ink composition contains the active energy ray-curable composition (E) according to the first to seventh embodiments.
- the modeling ink composition contains 5 to 60% by mass of (meth)acrylate (A), which is a component of E, 15 to 80% by mass of the polymerizable compound (b1), and 10 to 80% by mass of the polymerizable compound (b2). % is preferable.
- the former A the curing shrinkage of the modeling ink composition is low, so that the modeling accuracy is good, and the strength and water resistance of the resulting modeled product are good. Excellent.
- the viscosity of the modeling ink composition can be easily adjusted by containing b1, the stability and formation accuracy during modeling are high.
- the strength of the molded object is high.
- an oligomer-type or polymer-type polyfunctional compound is contained as b2, both the water resistance and impact resistance of the resulting shaped article are improved.
- the viscosity of the ink composition for modeling can be suitably adjusted according to the modeling method, and the accuracy of the resulting modeled article is excellent.
- the ink composition for modeling forms a thin film by being cured by active energy ray irradiation at the same time or immediately after being formed into a predetermined shape pattern, and the thin film is laminated to form a two-dimensional or three-dimensional model. to shape.
- the modeling method is not particularly limited, but for example, a stereolithography method in which ink is ejected by an inkjet method and cured by irradiation with active energy rays can be mentioned. In this case, from the viewpoint of stable ejection, the viscosity of the ink composition for modeling at 25.degree.
- the modeling ink composition contains 5 to 50% by mass of A, It preferably contains 20 to 70% by mass of b1 and 15 to 75% by mass of b2, more preferably 10 to 40% by mass of A, 30 to 60% by mass of b1, and 20 to 60% by mass of b2. .
- a tenth embodiment of the present invention is an adhesive composition (hereinafter also referred to as an adhesive).
- the adhesive composition contains the active energy ray-curable composition (E) according to the first to seventh embodiments.
- the (meth)acrylate (A) and polymerizable compound (B) of the pressure-sensitive adhesive composition can be brought in from E containing A and B, or can be added directly when preparing the pressure-sensitive adhesive composition. can.
- the adhesive composition has a total content of A of 2 to 60% by mass, a total content of b1 as B of 5 to 75% by mass, and a total content of b2 as B of 10 to 80% by mass. is preferred.
- A By containing an amide group and a cyclic substituent, A has sufficient cohesive strength and adhesive strength as an adhesive composition, has good adhesion to various substrates and stain resistance, and has low curing shrinkage.
- the resulting adhesive layer and adhesive laminate are excellent in durability. Further, by containing b1 and / or b2, it becomes easier to adjust the viscosity and curability of the pressure-sensitive adhesive composition according to the purpose, and the pressure-sensitive adhesive composition and the pressure-sensitive adhesive layer and the pressure-sensitive adhesive laminate obtained by curing it Good transparency, especially when containing 5 to 50% by mass of oligomer type or polymer type polyfunctional compound (total of b1 and b2), adhesive strength and durability of the adhesive layer after active energy ray curing are high, more preferred.
- the pressure-sensitive adhesive composition has a (meth)acrylate (A) having a reactive functional group (hydroxyl group, amino group, carboxyl group, oxazoline group, etc.) and/or polymerizable
- the compound (B) is contained, a cross-linking point is introduced, a compound (cross-linking agent) having a functional group (isocyanate group, carboxyl group, etc.) capable of reacting with these reactive functional groups is further contained, and cross-linking is performed by a cross-linking reaction.
- (3) A method of incorporating a polyfunctional compound (monomer type, oligomer type or polymer type) into the adhesive composition and cross-linking by irradiation with active energy rays, (3) A method of adding a polyfunctional compound to the adhesive composition and a method of incorporating A or B capable of introducing a chemical compound and a cross-linking point, and cross-linking by irradiation with an active energy ray and a cross-linking reaction. Note that (3) is a method in which the cross-linking methods of (1) and (2) are appropriately combined.
- the cross-linking agent is a polyisocyanate having two or more isocyanate groups in the molecule, a polyepoxy having two or more epoxy groups in the molecule, a poly having two or more aziridine groups in the molecule.
- examples include aziridine, polycarboxylic acid having two or more carboxyl groups in the molecule, and polyoxazoline having two or more oxazoline groups in the molecule.
- the crosslinking method in other embodiment is the same.
- the adhesive composition according to the tenth embodiment can form an adhesive layer by being cured by irradiation with active energy rays after being applied or molded to a separator or a base material.
- the pressure-sensitive adhesive composition contains an organic solvent, it may be coated or molded on a separator or a substrate, irradiated with active energy, and cured while evaporating (drying) the organic solvent. After drying by heating at a temperature of 120° C. for 1 to 30 minutes, active energy curing is preferably performed to obtain a highly transparent adhesive layer.
- a method for applying the pressure-sensitive adhesive composition to the separator or substrate conventionally known methods can be used, for example, spin coating method, spray coating method, knife coating method, dipping method, gravure roll, reverse roll method, Usual coating film forming methods such as screen printing method and bar coater method are used.
- a laminate is obtained by laminating an adhesive layer made of the adhesive composition according to the tenth embodiment and various substrates.
- a transfer method and a roll-to-roll method can be mentioned as a method of laminating the adhesive layer and various substrates.
- the thickness of the adhesive layer in the laminate is not particularly limited because it varies depending on various applications, but it is usually 4 to 150 ⁇ m, and when used for automobile members, about 20 to 120 ⁇ m is used for electronic materials and optical members. 30 to 100 ⁇ m is appropriate.
- the substrate examples include various substrates such as organic substrates, inorganic substrates, and organic/inorganic composite substrates having a wide range of polarities from low polarity to high polarity, depending on the application.
- substrates such as organic substrates, inorganic substrates, and organic/inorganic composite substrates having a wide range of polarities from low polarity to high polarity, depending on the application.
- polyolefin resins such as polyethylene and polypropylene
- polyester resins such as polyethylene terephthalate and polycarbonate
- acrylonitrile-butadiene-styrene copolymer ABS resins polyimide resins
- polyamide resins polyamide resins
- acrylic resins such as polymethyl methacrylate
- steel In addition to metals such as stainless steel, copper and aluminum, glasses, hybrid materials obtained by dispersing silica fine particles, which is an inorganic material, in polyimide, which is an organic material, and the like can be mentioned.
- the constituent component (meth)acrylate (A) exhibits wettability to a low-polarity substrate and a hydrophobic cyclic substituent that exhibits wettability to a high-polarity substrate. It has a hydrophilic amide group in the molecule, and can impart good adhesion to low-polarity to high-polarity substrates. In addition, by exhibiting a strong cohesive force derived from the hydrogen bond between the amide groups in the molecules of A, high adhesive force and stain resistance can be provided.
- the resulting pressure-sensitive adhesive layer also has high transparency and resistance. It has yellowing properties and is suitable for use in the optical field, such as pressure-sensitive adhesives for optical members and pressure-sensitive adhesive sheets.
- a laminate comprising an adhesive layer having such properties and various substrates can be applied as an adhesive film or an adhesive sheet for electronic materials, optical members, and automobile members.
- An eleventh embodiment of the present invention is an adhesive composition (hereinafter also referred to as adhesive).
- the adhesive composition contains the active energy ray-curable composition (E) according to the first to seventh embodiments.
- a cross-linking agent can be contained, and cross-linking can be performed by the various cross-linking methods described above.
- the adhesive composition like the pressure-sensitive adhesive composition, by containing (meth)acrylate (A), can provide good adhesion from low-polar substrates to high-polar substrates, and
- A the polymerizable compound
- various substrates composed of organic substrates, inorganic substrates, and organic/inorganic composite materials can be bonded by various curing methods, and the adhesive layer after curing can be It can exhibit high adhesive strength and impact resistance, and can be used as an adhesive composition for homogeneous or heterogeneous materials.
- various materials such as resin materials, metal materials, glasses, and hybrid materials described above, two or more of the same kind of materials are the same kind of materials, and two or more different kinds of materials are different kinds of materials.
- the (meth)acrylate (A) and the polymerizable compound (B) contained in the adhesive composition can be brought in from the active energy ray composition (E) containing A and B, and the adhesive composition is prepared. can be added directly on occasion.
- the adhesive composition has a total content of A of 2 to 65% by mass, a total content of b1 as B of 0 to 75% by mass, and a total content of b2 as B of 5 to 90% by mass. is preferred.
- A has sufficient cohesion and adhesion to various substrates as an adhesive composition, and the adhesive layer after curing has high adhesive strength, and the adhesive composition Cure shrinkage is low, and the resulting adhesive layer and adhesive laminate have excellent impact resistance.
- the viscosity of the adhesive composition and the contents of the monofunctional polymerizable compound and the polyfunctional compound as B can be easily adjusted according to the base material and curing method used.
- the content of the monofunctional polymerizable compound (total of b1 and b2) as B in the adhesive composition is 25 to 60% by mass, it is easy to adjust the viscosity of the adhesive composition and to suppress curing shrinkage. preferable.
- the total content of the polyfunctional compound (the sum of b1 and b2) as B is 15 to 60% by mass, the adhesive strength is high while maintaining high impact resistance, which is more preferable.
- the (meth)acrylate (A) and the polymerizable compound (B) contained in the coating composition are active energy containing A and B It can be brought in from the linear composition (E) or added directly when preparing the coating composition.
- the coating composition has a total content of A of 5 to 60% by mass, a total content of b1 as B of 5 to 65% by mass, and a total content of b2 as B of 10 to 80% by mass. is preferred.
- A contains an amide group and a cyclic substituent
- the wettability of the coating composition to various substrates is high, the abrasion resistance of the coating film after curing is high, and the curing shrinkage of the coating composition is low.
- the surface of the resulting cured coating film does not have unevenness and has an excellent appearance.
- the viscosity of the coating composition and the contents of the monofunctional polymerizable compound and the polyfunctional compound as B can be easily adjusted according to the base material and curing method used.
- the content of the monofunctional polymerizable compound (total of b1 and b2) as B is 0 to 60% by mass, and the oligomer type or polymer type as B
- the content of the polymerizable compound (total of b1 and b2) is preferably 5 to 40% by mass.
- the content of the polyfunctional compound (total of b1 and b2) as B is 15 to 85% by mass, the abrasion resistance is high while maintaining the excellent appearance of the cured coating film, which is more preferable.
- the two-stage irradiation of UV rays and EB rays as active energy rays does not leave monomers in the cured coating film, and the appearance of the cured coating film does not change (degrade) over time.
- the unsaturated bond between the (meth)acrylate group and the cyclic substituent of A can be photocured in stages by UV rays and EB rays, resulting in The wear resistance of the resulting cured coating film is further improved.
- the (meth)acrylate (A) and the polymerizable compound (B) contained in the sealant composition are active energy ray compositions containing A and B ( E) or can be added directly when preparing the sealant composition.
- the sealant composition has a total content of A of 5 to 60% by mass, a total content of b1 as B of 0 to 70% by mass, and a total content of b2 as B of 10 to 70% by mass.
- A contains an amide group and a cyclic substituent, the cure shrinkage of the sealant composition is low, and the obtained sealant has excellent heat-seal resistance.
- b1 and/or b2 it becomes easy to adjust the viscosity, curing method, and curability of the sealing agent composition according to the purpose, and the sealing effect of the sealing agent obtained by curing is high. Good wet heat yellowing resistance and corrosion resistance are preferable.
- the oligomer-type or polymer-type polyfunctional compound (total of b1 and b2) is contained in an amount of 2 to 45% by mass, the sealant after curing with active energy rays has a low water absorption rate and high outgassing resistance, which is more preferable. .
- the (meth)acrylate (A) and the polymerizable compound (B) contained in the nail cosmetic are brought in from the active energy ray composition (E) containing A and B. It can be added directly when preparing nail cosmetics.
- the nail cosmetic has a total content of A of 1 to 30% by mass, a total content of b1 as B of 10 to 65% by mass, and a total content of b2 as B of 5 to 70% by mass. is preferred. Since A contains an amide group and a cyclic substituent, the curing shrinkage of the nail cosmetic is low, and the resulting cured film is excellent in adhesiveness and surface hardness. In addition, by containing b1 and/or b2, it becomes easier to adjust the viscosity, curing method, and curability of the nail cosmetic according to the purpose, and the obtained nail cosmetic cured film has high surface gloss, which is more preferable. .
- the (meth)acrylate (A) and the polymerizable compound (B) contained in the decorative coating agent are the active energy ray composition (E) containing A and B.
- the decorative coating agent has a total content of A of 1 to 50% by mass, a total content of b1 as B of 10 to 60% by mass, and a total content of b2 as B of 15 to 70% by mass. is preferred. Since A contains an amide group and a cyclic substituent, curing shrinkage of the decorative coating agent is low, and the obtained decorative coating film has excellent elongation and bending resistance.
- the tack resistance and pencil hardness of the resulting decorative coat film can be enhanced. Furthermore, after curing with active energy rays and / or after decorative molding such as stretching of the cured film, thermal polymerization of the residual monomer by heat treatment, especially when the cyclic substituent of A has an unsaturated bond, the heat of the unsaturated bond The degree of cross-linking of the decorative coat film by polymerization is increased, and the scratch resistance and sunscreen agent resistance of the coat film are further improved.
- the (meth)acrylate (A) and the polymerizable compound (B) contained in the dental material can be brought in from the active energy ray composition (E) containing A and B. can be added directly in the preparation of the dental material.
- the dental material has a total content of A of 0.5 to 50% by mass, a total content of b1 as B of 5 to 70% by mass, and a total content of b2 as B of 10 to 60% by mass. is preferred. Since A contains an amide group and a cyclic substituent, the curing shrinkage of the dental material is low, and the resulting cured dental material has excellent surface smoothness and adhesive strength.
- the solubility, dispersibility and hardenability of the dental material and the hardness of the hardened material can be enhanced. Furthermore, after curing with active energy rays, thermal polymerization of residual monomers by heat treatment, especially when the cyclic substituent of A has an unsaturated bond, thermal polymerization of the unsaturated bond increases the adhesive strength of the cured dental material. can be done.
- the active energy ray-curable compositions (E) according to the first to seventh embodiments of the present invention may contain various additives other than those mentioned above, if necessary.
- Additives include thermal polymerization inhibitors, antioxidants, ultraviolet sensitizers, preservatives, phosphate esters and other flame retardants, surfactants, antistatic agents, pigments, coloring agents such as dyes, fragrances, Antifoaming agents, fillers, silane coupling agents, surface tension modifiers, plasticizers, surface lubricants, leveling agents, softening agents, organic fillers, inorganic fillers, silica particles and the like can be mentioned.
- These additives may be used singly or in combination of two or more.
- the content of these additives is not particularly limited as long as it does not adversely affect the properties of various molded products of E, but it is preferably 5% by mass or less with respect to the total weight of E.
- Additives include thermal polymerization inhibitors, antioxidants, ultraviolet sensitizers, preservatives, phosphate esters and other flame retardants, surfactants, antistatic agents, pigments, coloring agents such as dyes, fragrances, Antifoaming agents, fillers, silane coupling agents, surface tension modifiers, plasticizers, surface lubricants, leveling agents, softening agents, organic fillers, inorganic fillers, silica particles and the like can be mentioned. These additives may be used singly or in combination of two or more.
- the content of these additives is not particularly limited as long as it does not adversely affect the properties of various molded articles obtained from various compositions, but it should be 30% by weight or less based on the total weight of the composition. is preferred.
- water, organic solvents and mixtures thereof can be used as solvents and diluents as necessary.
- the content of such a solvent is not particularly limited as long as it does not adversely affect the properties of various molded articles obtained from various compositions, but it should be 95% by mass or less with respect to the total weight of the composition. is preferred.
- the active energy ray-curable composition (E) may further contain a polymerization initiator.
- E further improves the curability by active energy ray irradiation, and the active energy ray-curable ink composition, the composition for two-dimensional or three-dimensional modeling, and the adhesive composition according to another embodiment of the present invention.
- an active energy ray is defined as an energy ray capable of decomposing a compound (photopolymerization initiator) that generates active species to generate active species.
- active energy rays include visible rays, ultraviolet rays, infrared rays, ⁇ rays, ⁇ rays, ⁇ rays, X rays, electron beams (EB), and the like.
- EB electron beams
- Irradiation with active energy rays is preferably carried out in an inert gas atmosphere such as nitrogen gas or carbon dioxide gas or in an atmosphere with a reduced oxygen concentration.
- E and the curable composition used for various applications containing E has good curability because it has a (meth) acrylate (A) and a polymerizable compound (B), and is sufficient even in a normal air atmosphere. can be cured to
- the irradiation temperature of the active energy ray is preferably 10° C. to 200° C., and the irradiation time is preferably 1 second to 60 minutes.
- any substance that generates radicals upon irradiation with active energy rays may be used.
- benzoin such as benzoin, benzoin methyl ether, benzoin ethyl ether, benzoin isopropyl ether, benzoin isobutyl ether, anisole methyl ether, 4-(2-hydroxyethoxy) phenyl (2-hydroxy-2-propyl) ketone, ⁇ - Hydroxy- ⁇ , ⁇ '-dimethylacetophenone, methoxyacetophenone, 2,2'-dimethoxy-2-phenylacetophenone, 2-hydroxy-2-cyclohexylacetophenone, 2,2-diethoxyacetophenone, 2,2-dimethoxy-2- Acetophenones such as phenylacetophenone, 1-hydroxycyclohexylphenyl ketone, 4-phenoxydichloroacetophenone, 4-t-but
- the content of the photopolymerization initiator is usually 0.1 to 30% by mass and 0.5 to 20% by mass with respect to the total mass of various curable compositions according to each embodiment of the present invention. is preferred, and 0.5 to 3% by mass is more preferred. Although it depends on the type of photopolymerization initiator, the type of active energy ray, and the illuminance, if the content is less than 0.1% by mass, sufficient curability cannot be obtained, and if it exceeds 30% by mass, the strength of the cured product performance may be degraded.
- a compound having both a functional group for photopolymerization initiation and an ethylenically unsaturated group in the molecule can be used as the polymerizable photopolymerization initiator.
- ethylenically unsaturated groups it contains it may be a monofunctional polymerizable photoinitiator or a multifunctional polymerizable photoinitiator.
- a polymerizable photopolymerization initiator when contained, it may be used alone or may not be used in combination with a commercially available photopolymerization initiator.
- the active energy ray-curable composition (E) may further contain a non-polymerizable oligomer and/or a non-polymerizable polymer.
- non-polymerizable oligomers having an ethylenically unsaturated group in the molecule and having a weight average molecular weight (Mw) of 1,000 or more and less than 10,000, and those having an Mw of 10,000 or more are classified as non-polymerizable polymers.
- Mw weight average molecular weight
- non-polymerizable oligomers and non-polymerizable polymers include thermoplastic resins, rosin-based resins, mixtures thereof, and the like.
- Thermoplastic resins include (meth)acrylic resins, cyclic polyolefin resins, cellulose resins, polyester resins, polyurethane resins, polysulfonic acid resins, ABS resins, polycarbonate resins, polyamide resins, and polyimide resins.
- Rosin-based resins include natural rosin such as gum rosin, hydrogenated rosin obtained by modifying natural rosin, disproportionated rosin, rosin-modified phenolic resin, maleic acid-modified rosin resin, maleated rosin, esterified gum and other modified resins.
- a rosin resin can be mentioned.
- One of these non-polymerizable oligomers and/or non-polymerizable polymers may be used alone, or two or more thereof may be used in combination.
- the total content of the non-polymerizable oligomer and the non-polymerizable polymer is usually 0.1 to 20% by mass, based on the total mass of the various curable compositions according to each embodiment of the present invention, and 0.5 to It is preferably 15% by mass, more preferably 1 to 10% by mass.
- the curing shrinkage rate of the active energy ray-curable composition (E) and the curable composition containing it for each application can be reduced, the viscosity can be adjusted, and the substrate Improvement of wettability and adhesion, surface hardness, tensile strength, water resistance, heat resistance, impact resistance durability, abrasion resistance, etc. of the resulting cured film and cured product may be observed. It can be suitably used depending on the situation.
- C-1 Omnirad 184 (photopolymerization initiator, manufactured by IGM Resins B.V.)
- C-2 Omnirad 1173 (photopolymerization initiator, manufactured by IGM Resins B.V.)
- C-3 Omnirad TPO (photopolymerization initiator, manufactured by IGM Resins B.V.)
- ⁇ Transparency (compatibility) evaluation of curable composition The state of the active energy ray-curable composition prepared in each example and comparative example was visually observed, and the transparency (compatibility) was evaluated in four grades. A: High transparency, no turbidity or separation is observed. ⁇ : High transparency, but slight turbidity is observed. ⁇ : No phase separation, but turbidity. x: There is turbidity and phase separation.
- UVLED lamp wavelength 365 nm, output 100 mW/cm 2
- UVLED lamp wavelength 385 nm, output 100 mW/cm 2
- UVLED lamp wavelength 405 nm, output 100 mW/cm 2 ⁇ : Tack disappears at an integrated light amount of less than 200 mJ/cm 2 ⁇ : Tack disappears at an integrated light amount of 200 mJ/cm 2 or more and less than 500 mJ/cm 2 ⁇ : Tack disappears at an integrated light amount of 500 mJ/cm 2 or more and less than 1000 mJ/cm 2 Disappearance ⁇ : Tack disappears at an integrated light amount of 1000 mJ/cm 2 or more (including cases where tack does not disappear)
- ⁇ Cure shrinkage resistance evaluation> A silicone spacer (30 mm long x 15 mm wide x 1 mm thick) was set on a glass plate (50 mm long x 50 mm wide x 5 mm thick), and the active energy rays prepared in each example and comparative example were placed inside the spacer. Pour the curable composition and irradiate with ultraviolet rays (equipment: eyegraphics inverter type conveyor device ECS-4011GX, metal halide lamp: eyegraphics M04-L41, ultraviolet illuminance: 700 mW/cm 2 , integrated light intensity: 1000 mJ/cm 2 ) to prepare a cured sheet.
- ultraviolet rays equipment: eyegraphics inverter type conveyor device ECS-4011GX, metal halide lamp: eyegraphics M04-L41, ultraviolet illuminance: 700 mW/cm 2 , integrated light intensity: 1000 mJ/cm 2
- the curing shrinkage rate was determined according to JIS K5600 2-4, from the density change before and after curing of the active energy ray-curable composition, as shown in the following formula (1).
- the density of the curable composition before and after curing was measured according to JIS K7112 with an electronic hydrometer (MDS-300 manufactured by Alpha Mirage Co., Ltd.).
- the density of the prepared cured sheet was defined as the density of the curable composition after curing, and the following evaluation was performed from the curing shrinkage rate.
- (Cure shrinkage) (Ds-Dl)/Dl x 100 Formula (1) (Wherein, Ds is the density of the curable composition after curing, and Dl is the density of the curable composition before curing.)
- ⁇ Cure shrinkage exceeds 3% but is 5% or less.
- x Cure shrinkage exceeds 8%.
- a cured sheet was prepared in the same manner as in the above curing shrinkage resistance evaluation, the obtained sheet was cut into 3 cm squares, dried under vacuum at 60° C. for 24 hours, accurately weighed as a dry sheet, and the dried state of the cured product. weight.
- the dry sheet was immersed in deionized water at 30° C., and after 24 hours and 48 hours had passed, the weight immediately after being removed from the deionized water was weighed to confirm that the sheet had reached a saturated water absorption state, and cured.
- the weight of the product was taken as the saturated water absorption state.
- the saturated water absorption was calculated according to the following formula, and the water resistance of the cured product was evaluated by dividing it into four stages as follows.
- Saturated water absorption (%) (weight in saturated water absorption state - weight in dry state) / weight in dry state x 100%
- the active energy ray-curable composition of each example had a (meth)acrylate (A) having an amide group and a cyclic substituent in the molecule and a chain-like substitution having 1 to 36 carbon atoms.
- A a (meth)acrylate
- a polymerizable compound (b1) containing a group and / or a polymerizable compound (b2) containing a cyclic substituent having 3 to 20 carbon atoms it has good transparency (compatibility), 365 nm, Curability to light of both 385 nm and 405 nm was high, and cure shrinkage rate during curing was low. It was also confirmed that the obtained cured product had excellent water resistance.
- Comparative Examples 1 to 4 by not containing the (meth)acrylate (A) and the polymerizable compound (B) (b1 and / or b2 at the same time, the transparency, curability and curing shrinkage resistance of the curable composition
- the cured products of the comparative examples were inferior in water resistance.
- the different physical properties between the examples and the comparative examples are due to the active energy ray curability of the present invention. It is believed that this is due to the interaction between A and B contained in the composition.
- Example 18 is an example in which electron beams (EB) are irradiated instead of ultraviolet rays for curing.
- EB electron beams
- Curetron EBC-200-AA3 manufactured by Nissin High Voltage Co., Ltd. was used as an EB irradiation device (acceleration voltage: 200 kV, irradiation dose: 20 kGy).
- ⁇ Viscosity measurement and evaluation> The viscosity of the ink composition was measured according to JIS K5600-2-3 using a cone-plate viscometer (RE550 viscometer manufactured by Toki Sangyo Co., Ltd.). As an ink composition for inkjet printing, the viscosity was evaluated in four grades as follows. ⁇ : 5 or more and less than 100 mPa s ⁇ : 100 or more and less than 500 mPa s ⁇ : 500 or more and less than 2000 mPa s ⁇ : 2000 mPa s or more
- ⁇ Pigment dispersibility evaluation> Using the prepared ink composition, the state of aggregation and precipitation of the pigment was visually observed immediately after preparation and after standing at room temperature for 2 months, and the pigment dispersibility was evaluated according to the following four grades. ⁇ : Neither immediately after preparation nor after standing still for 2 months, no aggregation or sedimentation of the pigment was observed. ⁇ : No precipitation was observed immediately after preparation, but slight precipitation of the pigment was observed after standing still for 2 months. ⁇ : Slight aggregation or sedimentation of the pigment was observed immediately after preparation, and after standing still for 2 months. x: Aggregation and sedimentation of the pigment were clearly observed even immediately after preparation.
- the obtained ink composition was applied to a PET film having a thickness of 100 ⁇ m using a bar coater (RDS12) (film thickness after drying: 10 ⁇ m), and irradiated with ultraviolet rays (Eye Graphics Co., Ltd.). was cured with an inverter-type conveyor device ECS-4011GX and a methhalide lamp M04-L41) to produce a printed matter.
- RDS12 bar coater
- ECS-4011GX inverter-type conveyor device
- M04-L41 methhalide lamp
- ⁇ Surface drying property evaluation> The printed matter prepared by the above method was allowed to stand in an environment with a room temperature of 23° C. and a relative humidity of 50% for 5 minutes. was evaluated. ⁇ : The ink was dried and there was no transfer to the paper. ⁇ : The ink was dried and slightly transferred to the paper. C: The ink was almost dried and there was some transfer to the paper. x: The ink was hardly dried, and there was much transfer to the paper.
- ⁇ Discharge stability evaluation> The printing state of the printed matter obtained by inkjet printing was visually evaluated. ⁇ : Good printing without missing nozzles. ⁇ : There is slight nozzle missing. ⁇ : Nozzle missing in a wide range. x: There is ejection failure.
- the viscosity of the active energy ray-curable ink composition of the present invention can be arbitrarily adjusted according to various printing methods such as inkjet printing, offset printing, screen printing, and flexographic printing.
- the ink composition for inkjet printing can be prepared with a low viscosity, and when a pigment is blended, it has high pigment dispersibility.
- the compatibility between the (meth)acrylate (A) and the polymerizable compound (B) contained in the examples is extremely good, and the polymerizable compound (b1) having a chain substituent and the cyclic This is because the polymerizable compound (b2) having a substituent has many varieties ranging from low viscosity to high viscosity, and can be easily combined with other components such as a pigment dispersant.
- the ink compositions of the examples have high curability, the resulting cured film has good surface drying property, and the resulting printed matter is suitable for printing as an inkjet ink composition. Clarity was good.
- the ink compositions of Comparative Examples were all unsatisfactory in terms of viscosity, pigment dispersibility, curability, surface drying property, and inkjet printability.
- a 50 ⁇ m thick light release PET film manufactured by Toyobo Co., Ltd., polyester film E7002
- ultraviolet rays are irradiated from both sides
- equipment manufactured by Eyegraphics, inverter type conveyor device ECS-4011GX, metal halide lamp: manufactured by Eyegraphics M04-L41, ultraviolet illuminance 200mW/cm 2 , integrated light intensity 1000mJ/cm 2
- the release PET films on both sides were removed to obtain test pieces of cured products for Examples and cured products for Comparative Examples.
- tensile strength was measured under the conditions of a tensile speed of 10 mm / min and a distance between chucks of 50 mm in a temperature environment of 25 ° C. The strength was evaluated according to the criteria shown below.
- ⁇ Tensile strength 40 MPa or more
- ⁇ Tensile strength 30 MPa or more and less than 40 MPa
- ⁇ Tensile strength 20 MPa or more and less than 30 MPa
- ⁇ Tensile strength less than 20 MPa
- a cured product was prepared in the same manner as the test piece for the tensile test, and the glass transition temperature (Tg) of the cured product was measured with a differential scanning calorimeter (DSC-60plus manufactured by Shimadzu Corporation). The heat resistance was evaluated as follows from the measured value of the glass transition temperature (Tg) of the cured product. ⁇ : Cured product Tg 80 ° C. or higher ⁇ : Cured product Tg 40 ° C. or higher and lower than 80 ° C. ⁇ : Cured product Tg lower than 40 ° C.
- a 75 ⁇ m thick heavy release PET film (polyester film E7001 manufactured by Toyobo Co., Ltd.) is attached to a horizontally installed glass plate, and a spacer with a thickness of 4 mm and an inner part of 10 ⁇ 80 mm is installed, and 4 mm inside the spacer.
- a 50 ⁇ m-thick light release PET film (polyester film E7002 manufactured by Toyobo Co., Ltd.) is further overlaid thereon.
- Ultraviolet rays were irradiated from both sides (equipment: eye graphics, inverter type conveyor device ECS-4011GX, metal halide lamp: eye graphics M04-L41, ultraviolet illuminance 200 mW/cm 2 , integrated light intensity 1,000 mJ/cm 2 ). , cured the ink composition. After that, the release PET film on both sides was removed, and further ultraviolet rays were irradiated with a predetermined integrated light amount (equipment: desktop batch type UV-LED curing device MUVBA-0.3 ⁇ 0.3 ⁇ 0.3 ⁇ 0.3 ⁇ 0.3 ⁇ 0.3, manufactured by Itec System Co., Ltd.).
- ⁇ Water resistance evaluation> Using a spacer of 10 mm thick and 10 cm ⁇ 1 cm inside, a cured product test piece for water resistance evaluation of 10 cm long ⁇ 1 cm wide ⁇ 1 mm thick was prepared in the same manner as the strength evaluation and test piece preparation. After measuring the weight of the obtained test piece immediately after molding, it was immersed in a beaker containing 100 ml of water, and the weight after immersion was measured one day later. The water absorption rate was measured by substituting the weight before immersion and the weight after immersion into the following formula, and the water resistance was evaluated according to the criteria shown below. Incidentally, the lower the water absorption, the higher the water resistance. ⁇ : Water absorption is less than 2% ⁇ : Water absorption is 2% or more and less than 2.5% ⁇ : Water absorption is 2.5% or more and less than 3% ⁇ : Water absorption is 3% or more
- A The height is less than 10 mm ⁇ 0.1 mm, and the side surface has no unevenness.
- ⁇ Height 10 mm ⁇ 0.1 mm or more and less than ⁇ 0.2 mm, or slight unevenness on the side surface.
- ⁇ Height 10 mm ⁇ 0.2 mm or more ⁇ 0.3 mm or less, or the side surface is slightly uneven.
- x Height of 10 mm ⁇ 0.3 mm or more, or obvious unevenness on the side surface.
- the ink compositions for three-dimensional modeling of Examples have excellent curing shrinkage resistance, and by using them, three-dimensional stereolithographic objects can be obtained with high modeling accuracy.
- the heat resistance and impact resistance of the resulting shaped article are very good, and sufficient strength and water resistance can be obtained by adjusting the type and content of the (meth)acrylate (A) and the polymerizable compound (B). I was able to get sex. Shaped articles with such good properties were not obtained from the compositions of the comparative examples.
- a 75 ⁇ m thick heavy release PET film (polyester film E7001 manufactured by Toyobo Co., Ltd.) is adhered to a horizontally placed glass plate, and a spacer with a thickness of 1 mm and an inside of 60 mm ⁇ 100 mm is placed and prepared inside the spacer.
- a 50 ⁇ m thick light release PET film (manufactured by Toyobo Co., Ltd., polyester film E7002) is further overlaid, wavelength 385 nm, output
- the pressure-sensitive adhesive composition was cured by irradiating with a UVLED lamp of 100 mW/cm 2 so that the cumulative amount of light was 3000 mJ/cm 2 . Thereafter, the cured product (adhesive layer) obtained by removing the peelable PET films on both sides was touched and the curability was evaluated in three grades.
- ⁇ A cured product that maintains its shape is obtained, and tack is observed when the cured product is touched, but no liquid uncured material adheres.
- ⁇ A cured product that maintains its shape is obtained, and tackiness is observed when the cured product is touched, but a liquid uncured product adheres.
- x Curing is insufficient, a cured product that retains its shape cannot be obtained, and a large amount of liquid residue adheres.
- ⁇ Adhesive sheet preparation and adhesion evaluation> The active energy ray-curable pressure-sensitive adhesive composition prepared in the same manner as described above is applied to various plate-shaped substrates (substrates), and a desktop roll laminator is used to prevent air bubbles from being caught with a light release separator (silicone-coated PET film).
- the adhesive layer is laminated so that the thickness is 5 ⁇ m, and ultraviolet rays are irradiated (equipment: eye graphics inverter type conveyor device ECS-4011GX, metal halide lamp: eye graphics manufactured by M04-L41, ultraviolet illuminance: 700 mW/cm 2 , integrated light intensity: 5000 mJ/cm 2 ). After that, the light release separator was peeled off to obtain an adhesive sheet consisting of the adhesive layer and the substrate.
- equipment eye graphics inverter type conveyor device ECS-4011GX
- metal halide lamp eye graphics manufactured by M04-L41
- ultraviolet illuminance 700 mW/cm 2
- integrated light intensity 5000 mJ/cm 2
- a pressure-sensitive adhesive sheet was prepared in the same manner as in the measurement of the above-mentioned adhesive strength, set in a xenon fade meter (SC-700-WA: manufactured by Suga Test Instruments Co., Ltd.), and irradiated with ultraviolet rays having an intensity of 70 mW/cm 2 for 120 hours. , and the discoloration of the adhesive layer on the adhesive sheet was visually observed. (double-circle): Yellowing cannot be visually confirmed at all. ⁇ : Very slight yellowing can be confirmed visually. ⁇ : Yellowing can be visually confirmed. x: Obvious yellowing can be visually confirmed.
- a pressure-sensitive adhesive sheet was prepared in the same manner as in the measurement of the pressure-sensitive adhesive strength, and after holding for 100 hours under conditions of a temperature of 85°C and a relative humidity of 85%, the pressure-sensitive adhesive layer was visually observed for floating or peeling, air bubbles, and cloudiness. ,evaluated.
- ⁇ Transparent, no floating, no peeling, and no air bubbles.
- ⁇ Slight haze is observed, but no lifting, peeling, or air bubbles are generated.
- ⁇ Slight cloudiness, floating or peeling, and air bubbles.
- x Extreme cloudiness, floating, peeling, and air bubbles.
- the active energy ray-curable pressure-sensitive adhesive compositions of Examples have high curability, and the pressure-sensitive adhesive layers obtained by curing them have high transparency and adhesion to various materials.
- the adhesiveness (adhesive strength) was also good.
- the cured product (adhesive layer) obtained from the active energy ray-curable adhesive composition of the present invention contains (meth)acrylate (A) having both an amide group and a cyclic substituent as a constituent component.
- the stain resistance when the cured product was peeled off from the substrate, and the yellowing resistance and durability of the cured product were also good.
- compositions of the comparative examples were low in curability, transparency, adhesion to various materials, and tackiness, and that the cured products were low in stain resistance, yellowing resistance, and durability.
- the adhesive strength between the obtained adhesive layer and various substrates was high. Such favorable properties were not obtained in the compositions and cured products of Comparative Examples.
- the adhesive composition was uniformly applied to any one of two plate-like substrates of the same or different type each having a length of 100 mm, a width of 25 mm, and a thickness of 1 mm.
- the adhesive composition contained a solvent
- a large amount of the mixture was applied so that the thickness after drying was about the same as when the solvent was not used, and the mixture was dried at 90° C. for 2 minutes.
- UV ultraviolet irradiation device: eye graphics inverter type conveyor device ECS-4011GX, metal halide lamp: eye graphics M04-L41, ultraviolet illuminance: 700 mW / cm 2 , cumulative light intensity: 5000 mJ/cm 2
- EB EB irradiation device: Curetron EBC-200-AA3 manufactured by Nissin High Voltage Co., Ltd., acceleration voltage: 200 kV, irradiation dose: 20 kGy) irradiation was performed.
- test pieces after irradiation with UV rays and EB rays were used as adhesive test pieces, respectively.
- UV heat was described as the curing method
- the test pieces after irradiation with UV rays were further heated at 80° C. for 48 hours, and the resulting test pieces were used as adhesive test pieces.
- Tensilon RTA-100 manufactured by ORIENTEC was used as a testing machine according to JIS K 6850, and the tensile shear strength was measured at a tensile speed of 10 mm/min. Note that the higher the tensile shear strength, the higher the adhesive strength.
- A The tensile shear strength is 20 MPa or more.
- Good The tensile shear strength is 15 MPa or more and less than 20 MPa.
- ⁇ The tensile shear strength is 10 MPa or more and less than 15 MPa.
- x Tensile shear strength is less than 10 MPa.
- Impact peeling adhesive strength is 20 KJ/m2 or more.
- the impact peel adhesive strength is 15 KJ/m 2 or more and less than 20 KJ/m 2 .
- the impact peel adhesive strength is 10 KJ/m2 or more and less than 15 KJ/m2.
- x The impact peel adhesive strength is less than 10 KJ/m2.
- the active energy ray-curable adhesive compositions of Examples are easily cured by both ultraviolet (UV) and electron beam (EB), and have high adhesive strength and impact resistance. It was possible to obtain a laminated body bonded together by. By further heating after UV or EB irradiation, thermosetting continues and it is also applicable to adhesion of opaque substrates and different materials.
- UV ultraviolet
- EB electron beam
- ⁇ Wettability evaluation> The obtained various coating compositions were applied to various substrates using a bar coater (RDS 3), and the degree of repellency of the coating film was visually observed, and the wettability was evaluated in four grades as follows.
- x The coating film is non-uniform with many cissing.
- ⁇ Abrasion resistance evaluation> The resulting cured coating film was evaluated for abrasion resistance in accordance with ISO20566 using a car wash abrasion resistance tester (Amtec laboratory Car Wash apparatus manufactured by Amtec Kistler GmbH). The 20° gloss of the cured coating film before and after the abrasion test was measured with a BYK Gardner gloss meter, the gloss retention rate was calculated by the following formula, and the abrasion resistance of the coating film was evaluated according to the following criteria. Incidentally, the higher the gloss retention, the higher the abrasion resistance of the cured coating film.
- Gloss retention rate (%) (gloss value after friction) / (gloss value before friction) x 100% Regarding the obtained gross retention rate, ⁇ : Gloss retention rate of 80% or more ⁇ : Gloss retention rate of 60% or more and less than 80% ⁇ : Gloss retention rate of less than 60%
- the active energy ray-curable coating compositions of Examples have good wettability to various substrates and excellent curability, and the appearance of the resulting cured coating film is also abrasion resistant. was also good.
- the coating compositions of Comparative Examples had low curability, and the resulting cured films had low appearance and low wear resistance.
- the coating composition of the present invention has good wettability to general-purpose plastics, wood and metals, high curability to active energy rays, and excellent properties of the cured coating film obtained, and can be used for various electronic parts. It can be suitably used in a wide range of applications such as paints for indoor and outdoor use, paints for floors, paints for vehicles, and the like.
- a silicone spacer (30 mm long x 15 mm wide x 3 mm thick) was set on a glass plate (50 mm long x 50 mm wide x 5 mm thick), and a copper foil (5 mm long x 50 m wide x 80 ⁇ m thick) was placed inside the spacer. was put in, and the prepared active energy ray-curable sealant composition was injected.
- ⁇ Wet heat yellowing resistance evaluation> The resulting cured product of the sealant was allowed to stand still for 24 hours in an atmosphere of 23°C and 50% relative humidity. Co., Ltd.) and used as the initial b value. After that, the cured product was allowed to stand in a thermo-hygrostat set at 85° C. and a relative humidity of 85% for 500 hours to conduct an accelerated test of yellowing resistance to moisture and heat. Similarly, the cured product after the test was left still for 24 hours in an atmosphere of 23° C. and 50% relative humidity, and the transmitted color was measured to obtain the b value after moist heat.
- the wet heat yellowing resistance of the cured product was evaluated in four grades as follows. A: Both the initial b value and the b value after moist heat are 0.2 or less, and ⁇ b is 0.1 or less. ⁇ : Either one of the initial b value and the b value after moist heat or both exceeds 0.2, but both are 0.5 or less, and ⁇ b is 0.2 or less. ⁇ : Either one of the initial b value and the b value after moist heat or both exceeds 0.5, but both are 1.0 or less, and ⁇ b is 0.3 or less. x: Either one or both of the initial b value and the b value after moist heat exceeded 1.0, or ⁇ b exceeded 0.3.
- Water absorption rate (%) (weight after water absorption - weight before water absorption) / weight before water absorption x 100% ⁇ : Water absorption is less than 1.0% ⁇ : Water absorption is 1.0% or more and less than 2.0% ⁇ : Water absorption is 2.0% or more and less than 3.0% ⁇ : Water absorption is 3 .0% or more
- Outgassing rate (%) (weight after test - weight before test) / weight before test x 100% ⁇ : Incidence rate is less than 0.1% ⁇ : Incidence rate is 0.1% or more and less than 0.3% ⁇ : Incidence rate is 0.3% or more and less than 1.0% ⁇ : Incidence rate is 1 .0% or more
- the cured encapsulants obtained from the active energy ray-curable encapsulant compositions of Examples have high transparency and water resistance, generate little outgas, and are resistant to humidity and heat. Modification and metal corrosion resistance (corrosion resistance) were good. On the other hand, these physical properties were not observed in the cured products obtained from the curable compositions of Comparative Examples.
- the sealant composition of the present invention can be suitably used as a sealant for optical members, electrical equipment, and the like.
- the active energy ray-curable nail cosmetics of Examples have excellent curability with respect to the commercially available UV lamp for gel nails, while the nylon-based (protein is the main component)
- the adhesiveness to a material having a large number of amide groups was high. From these results, it can be seen that the active energy ray-curable nail cosmetic composition of the present invention can be suitably used as a base gel gel nail that is directly applied to the nail.
- the surface hardness and surface glossiness of the obtained cured film are good, and it can be suitably used as a top coat gel nail.
- the curable compositions of Comparative Examples had low curability, and the surface hardness and surface glossiness of the cured films were low.
- the resulting decorative coating agent was coated on a 180 ⁇ m-thick PC film (“Panlite PC-2151” manufactured by Teijin Ltd.) using a bar coater (RDS 6) so that the film thickness after drying was 5 ⁇ m. , 80° C. for 3 minutes and irradiated with ultraviolet rays (high-pressure mercury lamp, 300 mW/cm 2 , 1,000 mJ/cm 2 ) to cure the coating film and obtain a laminate having a hard coat layer.
- the resulting laminate was cut out and the hard coat layer was evaluated for surface tack resistance, elongation, pencil hardness, scratch resistance, bending resistance and sunscreen resistance by the following methods.
- the laminate after being cured with active energy rays was placed in a constant temperature machine at 80° C., and after heat treatment for 8 hours, various physical properties were evaluated.
- ⁇ Elongation rate evaluation> The obtained laminate was cut into a length of 50 mm and a width of 15 mm, fixed to a Tensilon universal testing machine RTA-100 (manufactured by Orientec) with a chuck distance of 25 mm, and placed in an oven set at a temperature of 150 ° C. to a length of 250 mm. /min, the test piece was pulled in one direction while visually observing the appearance, and the length (mm) of the test piece when cracks or whitening occurred in the coating layer was measured. The elongation rate was calculated and evaluated by the following method.
- Elongation rate (%) (sample length after test/25) x 100% ⁇ : elongation rate is 200% or more ⁇ : elongation rate is 150 or more and less than 200% ⁇ : elongation rate is 110% or more and less than 150% ⁇ : elongation rate is less than 110%
- ⁇ Surface hardness evaluation> Using a test piece of the laminate, in accordance with JIS K 5600, after scratching a pencil about 10 mm at an angle of 45 °, the surface hardness is determined by taking the hardest pencil that does not scratch the surface of the laminate as pencil hardness. It was evaluated as follows. ⁇ : Pencil hardness is 2H or more ⁇ : Pencil hardness is HB to H ⁇ : Pencil hardness is 3B to B ⁇ : Pencil hardness is 4B or less
- ⁇ Scratch resistance evaluation> A test piece of the laminate was reciprocated 10 times with #0000 steel wool under a weight of 200 g, and the surface of the laminate was visually observed to evaluate the scratch resistance. (double-circle): Generation
- UltraSheer DRY-TOUCH SUNSCREEN SPF100+ (manufactured by Johnson & Johnson), which is a sunscreen agent, was applied to the coated surface of the test piece of the laminate so as to have a diameter of about 1 cm, heated at 80 ° C. for 6 hours, and exposed to heat. After cooling, it was washed with a neutral detergent, and the state of the surface was observed to evaluate sunscreen resistance as follows. ⁇ : No marks of the sunscreen agent were observed. ⁇ : A slight transparent mark is observed in the portion to which the sunscreen was applied. ⁇ : A white mark remains on the part to which the sunscreen was applied, and the surface is swollen. x: The part to which the sunscreen was applied was sticky and the surface was peeled off.
- the active energy ray-curable decorative coating agent of the example was applied to the surface of a general-purpose plastic substrate and cured with an active energy ray to easily form a decorative coating layer (decorative coating It was possible to obtain a laminate having a film).
- the surface (coated surface) of the obtained laminate has tack resistance, high hardness, and excellent scratch resistance and sunscreen resistance.
- the elongation and bending resistance of the obtained laminate were good.
- the stress on the coated surface and substrate is further relieved by heat treatment, and an unsaturated bond is added to the cyclic substituent of (meth)acrylate (A), which is an essential component of the decorative coating agent.
- the decorative coating agent of the present invention is suitably used for a wide variety of decorative molding, decorative processing and decorative printing such as decorative films, decorative sheets and decorative coatings.
- ⁇ Surface smoothness> The surface of the cured product obtained in the curability evaluation was visually observed to confirm smoothness and gloss, and the surface smoothness was evaluated.
- ⁇ Hardness evaluation> The surface of the cured body obtained in the above curability evaluation was buffed, and the Knoop hardness was measured with a micro hardness tester manufactured by Matsuzawa Seiki Co., Ltd. under a load of 10 g and a load of 20 seconds. The measurement temperature was 23°C.
- ⁇ Knoop hardness is less than 70 KHN.
- x Measurement could not be performed because it was not cured.
- Adhesive strength (dentin adhesive strength)>
- the cow's lower forehead anterior teeth were polished with #1000 water-resistant abrasive paper under water injection, the flat adhesive dentin surface was scraped out, dried by blowing compressed air for 10 seconds, and a tape with holes of 3 mm in diameter was attached. , set the adherend surface.
- an adhesion test piece was prepared by a known method (see the method described in JP-A-2010-208964). The adhesive test piece was immersed in water at 37°C for 24 hours, and then measured for tensile adhesive strength with an Instron universal tester (crosshead speed: 2 mm/min). Adhesive strength to dentin.
- the value of tensile bond strength is the average value of five test pieces.
- ⁇ The adhesive strength of both enamel and dentin is 20 Mpa or more.
- ⁇ The adhesive strength of only one of enamel and dentin is 20 Mpa or more.
- ⁇ The adhesive strength of both enamel and dentin is 7 Mpa or more.
- x Both adhesive strengths of enamel and dentin are less than 7 Mpa.
- the active energy ray-curable dental materials of Examples have high solubility (or dispersibility), curability, and storage stability. , with good hardness, surface smoothness and adhesive strength.
- the composition of the comparative example has low solubility, curability, and storage stability, and does not fully cure, so the hardness and surface smoothness of the resulting cured product are low, and the adhesive strength is insufficient. Met.
- the active energy ray-curable composition containing (A) a (meth)acrylate having a specific structure and a polymerizable compound (B) according to the present invention is Due to the cyclic substituent of A and the amide, it has high transparency and good curability, as well as good wettability and adhesion to various substrates. It can be seen that it is excellent in toughness, impact resistance, wear resistance, etc. Due to the interaction between the (meth)acrylate (A) and the polymerizable compound (B), the curable composition has low cure shrinkage when the composition is cured, and there is no internal stress or distortion in the resulting cured product. , durability was good.
- the active energy ray-curable composition of the present invention has a specific (meth)acrylate (A) and a polymerizable compound (b1) having a chain substituent and/or a cyclic substituent.
- A specific (meth)acrylate
- b1 polymerizable compound having a chain substituent and/or a cyclic substituent.
- the polymerizable compound (b2) while having high transparency and good curability, excellent wettability to various substrates having a wide range of polarities from low polarity to high polarity, and cure shrinkage. It is possible to obtain a cured product having low and excellent water resistance, impact resistance, wear resistance and durability.
- Active energy ray-curable ink composition containing the curable composition, ink composition for two-dimensional or three-dimensional modeling, pressure-sensitive adhesive composition, adhesive composition, coating composition, sealant composition, nail makeup It can be used for materials, decorative coating agents, dental materials, etc.
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Abstract
Description
(1)分子内にアミド基と環状置換基を有する(メタ)アクリレート(A)と、
分子内に1つ以上のエチレン性不飽和基を有する重合性化合物(B)(Aを除く)を含有する活性エネルギー線硬化性組成物であって、
重合性化合物(B)は炭素数1~36の鎖状置換基を有する重合性化合物(b1)及び/又は炭素数3~20の環状置換基を有する重合性化合物(b2)を含む活性エネルギー線硬化性組成物。
(2)(メタ)アクリレート(A)は環状置換基として飽和又は不飽和の多環式の脂肪族環、単環式又は多環式の芳香族環、飽和又は不飽和の脂肪族複素環、芳香族複素環から選択される1つ以上の置換基である前記(1)に記載の活性エネルギー線硬化性組成物。
(3)(メタ)アクリレート(A)は(メタ)アクリレート基と環状置換基の間にアミド基を有する前記(1)又は(2)に記載の活性エネルギー線硬化性組成物。
(4)重合性化合物(B)はエチレン性不飽和基として、(メタ)アクリルアミド基、(メタ)アクリレート基、ビニル基、ビニルエーテル基、アルキルビニルエーテル基、アリル基、(メタ)アリルエーテル基とマレイミド基から選択される1種以上の基を有する前記(1)~(3)のいずれか一項に記載の活性エネルギー線硬化性組成物。
(5)活性エネルギー線硬化性組成物全体に対する(メタ)アクリレート(A)の含有量は0.1~99.5質量%、重合性化合物(b1)の含有量は0.3~80質量%、重合性化合物(b2)の含有量は0.2~70質量%である前記(1)~(4)のいずれか一項に記載の活性エネルギー線硬化性組成物。
(6)硬化収縮率が5%以下である前記(1)~(5)のいずれか一項に記載の活性エネルギー線硬化性組成物。
(7)活性エネルギー線硬化性組成物の硬化物における飽和吸水率が10%以下である前記(1)~(6)のいずれか一項に記載の活性エネルギー線硬化性組成物。
(8)前記(1)~(7)のいずれか一項に記載の活性エネルギー線硬化性組成物を含有するインク組成物。
(9)前記(1)~(7)のいずれか一項に記載の活性エネルギー線硬化性組成物を含有する二次元又は三次元造形用インク組成物。
(10)前記(1)~(7)のいずれか一項に記載の活性エネルギー線硬化性組成物を含有する粘着剤組成物。
(11)前記(1)~(7)のいずれか一項に記載の活性エネルギー線硬化性組成物を含有する接着剤組成物。
(12)前記(1)~(7)のいずれか一項に記載の活性エネルギー線硬化性組成物を含有する塗料組成物。
(13)前記(1)~(7)のいずれか一項に記載の活性エネルギー線硬化性組成物を含有する封止剤組成物。
(14)前記(1)~(7)のいずれか一項に記載の活性エネルギー線硬化性組成物を含有する爪化粧料。
(15)前記(1)~(7)のいずれか一項に記載の活性エネルギー線硬化性組成物を含有する加飾コート剤。
(16)前記(1)~(7)のいずれか一項に記載の活性エネルギー線硬化性組成物を含有する歯科材料。
本発明の第一~第五の実施形態(以下は併せて本実施形態とも称する。)は、活性エネルギー線硬化性組成物(E)である。本実施形態に係る活性エネルギー線硬化性組成物(E)(以下、単に「硬化性組成物(E)」とも称する。)は、分子内にアミド基と環状置換基を有する(メタ)アクリレート(A)と、分子内に1つ以上のエチレン性不飽和基を有する重合性化合物(B)(Aを除く)を含有し、Bとして炭素数1~36の鎖状置換基を有する重合性化合物(b1)及び/又は炭素数3~20の環状置換基を有する重合性化合物(b2)を含有する。
(1)(メタ)アクリレート(A)
実施例に用いられる(メタ)アクリレート(A-1)~(A-15)を表1に示す。
<炭素数1~36の鎖状置換基を有する重合性化合物(b1)>
b1-1:ジメチルアクリルアミド(登録商標「Kohshylmer」、「DMAA」)
b1-2:ジエチルアクリルアミド(登録商標「Kohshylmer」、「DEAA」)
b1-3:イソプロピルアクリルアミド(登録商標「Kohshylmer」、「NIPAM」)
b1-4:N-(2-ヒドロキシエチル)アクリルアミド(登録商標「Kohshylmer」、「HEAA」)
b1-5:N-[3-(ジメチルアミノ)]プロピルアクリルアミド(登録商標「Kohshylmer」、「DMAPAA」)
b1-6:ダイアセトンアクリルアミド(登録商標「Kohshylmer」)
b1-7:2-エチルヘキシルアクリレート
b1-8:2-(2-エトキシエトキシ)エチルアクリレート
b1-9:4-ヒドロキシブチルアクリレート
b1-10:ペンタエリスリトールトリアクリレート
b1-11:ジペンタエリスリトールヘキサアクリレート
b1-12: 1,6-ヘキサンジオールジアクリレート
b1-13: トリプロピレングリコールジアクリレート
<炭素数3~20の環状置換基を重合性化合物(b2)>
b2-1:N-シクロヘキシルアクリルアミド(登録商標「Kohshylmer」)
b2-2:N-アクリロイルモルフォリン(登録商標「Kohshylmer」、「ACMO」)
b2-3:N-フェニルアクリルアミド(登録商標「Kohshylmer」)
b2-4:ドーパミンアクリルアミド(登録商標「Kohshylmer」)
b2-5:3-アクリルアミドフェニルボロン酸(登録商標「Kohshylmer」)
b2-6:tert-ブチルシクロヘキシルアクリレート(登録商標「Kohshylmer」)
b2-7:イソボルニルアクリレート
b2-8:テトラヒドロフルフリルアクリレート
b2-9:トリシクロデカンジメタノールジアクリレート
b2-10:UV-3000B:2官能ウレタンアクリレート(紫光、三菱ケミカル株式会社製)
b2-11:UV-6640B:2官能ウレタンアクリレート(紫光、三菱ケミカル株式会社製)
b2-12:Quick Cure7100:UV硬化性ウレタンオリゴマー(登録商標「Quick Cure」、KJケミカルズ社製)
b2-13:Quick Cure8100:UV硬化性ウレタンオリゴマー(登録商標「Quick Cure」、KJケミカルズ社製)
<重合性化合物(b3)(前記A、b1及びb2を除く)>
b3-1:メタクリル酸グリシジル
b3-2:2-ビニル-2-オキサゾリン
b3-3:アクリロニトリル
b3-4:アクリル酸
C-1:Omnirad 184(光重合開始剤、IGM Resins B.V.社製)
C-2:Omnirad 1173(光重合開始剤、IGM Resins B.V.社製)
C-3:Omnirad TPO(光重合開始剤、IGM Resins B.V.社製)
D-1:水添ロジン(非重合性ポリマー、タッキーファイアKE-359、荒川化学工業製)
D-2:アクリル樹脂(非重合性ポリマー、VS-1057、星光PMC社製)
D-3:ブレンマー(非重合性オリゴマー、PME-4000、日油社製)
D-4:BYK-331(レベリング剤、ポリエーテル変性ポリジメチルシロキサン、BYK Chemie社製)
D-5:顔料分散液(NX-061グリーン、大日精化工業株式会社製)
D-6:ヘキサメチレンジイソシアネート
D-7:無機系フィラー(酸化チタン)
(5)基材
PP:ポリプロピレン板及びフィルム
PC:ポリカーボネート板及びフィルム
PMMA:ポリメチルメタクリレート板及びフィルム
PET:易接着ポリエチレンテレフレート板及びフィルム
ABS:アクリロニトリル-ブタジエン-スチレン共重合合成樹脂板
SPCC:冷間圧延鋼板
SUS:ステンレス板
Al:アルミ板
Cu:銅板
PO:ポリオレフィンシート
PVC:ポリ塩化ビニル板
HDF:木質板(高密度繊維板)
実施例1~16及び比較例1~4
本実施形態に用いる(メタ)アクリレート(A)、重合性化合物(B)(鎖状置換基を有するb1と環状置換基を有するb2)、光重合開始剤(C)と他の成分を表2に示す比例で秤量し、室温にて均一に混合して、実施例及び比較例の硬化性組成物を調製した。得られた硬化性組成物の透明性(相溶性)、硬化性、耐硬化収縮性を下記方法により評価し、結果を表2に示す。又、各実施例と比較例で得られた硬化物の耐水性を下記方法により評価し、結果を表2に示す。
各実施例と比較例で調製した活性エネルギー線硬化性組成物の状態を目視により観察し、透明性(相溶性)を4段階に分けて評価した。
◎:透明性が高く、濁りや分離が全く確認されない。
○:透明性は高いが、濁りが僅かに見られる。
△:相分離はしてないが、濁りがある。
×:濁りや相分離がある。
各実施例と比較例で調製した活性エネルギー線硬化性組成物を厚さ100μmのPETフィルム(「コスモシャインA-4100」東洋紡製)易接着処理面上にバーコーターを用い、膜厚が20μmとなるように塗布した後、紫外線を照射して塗膜を硬化させ、硬化物に触れた際のタックが無くなる積算光量を求め、硬化性を4段階に分けて評価した。なお、紫外線照射用ランプは下記1)~3)の3種類を用いた。又、タックが無くなる(完全硬化)までに必要の積算光量が低い程、硬化性が高い。
1)UVLEDランプ:波長365nm、出力100mW/cm2
2)UVLEDランプ:波長385nm、出力100mW/cm2
3)UVLEDランプ:波長405nm、出力100mW/cm2
◎:積算光量 200mJ/cm2未満でタックが消失
○:積算光量 200mJ/cm2以上、500mJ/cm2未満でタックが消失
△:積算光量 500mJ/cm2以上、1000mJ/cm2未満でタックが消失
×:積算光量 1000mJ/cm2以上でタックが消失(タックが消失しない場合を含む)
ガラス板(縦50mm×横50mm×厚さ5mm)上にシリコーン製のスペーサー(縦30mm×横15mm×厚さ1mm)をセットし、スペーサーの内部に各実施例と比較例で調製した活性エネルギー線硬化性組成物を流し込み、紫外線照射(装置:アイグラフィックス製 インバーター式コンベア装置ECS-4011GX、メタルハライドランプ:アイグラフィックス製 M04-L41、紫外線照度:700mW/cm2、積算光量:1000mJ/cm2)にて硬化させ、硬化シートを作製した。
硬化収縮率はJIS K5600 2-4に従って、下記計算式(1)に示すように活性エネルギー線硬化性組成物の硬化前後の密度変化によって求めた。硬化性組成物の硬化前後の密度に関しては、電子比重計(アルファーミラージュ株式会社製のMDS-300)により、JIS K7112に従って測定した。前記作製した硬化シートの密度は硬化性組成物の硬化後の密度とし、硬化収縮率から以下の評価を行った。
(硬化収縮率)=(Ds-Dl)/Dl×100 ・・・計算式(1)
(式中、Dsは硬化性組成物の硬化後の密度であり、Dlは硬化性組成物の硬化前の密度である。)
◎:硬化収縮率は3%以下である。
○:硬化収縮率は3%を超えるが、5%以下である。
△:硬化収縮率は5%を超えるが、8%以下である。
×:硬化収縮率は8%を超える。
前記の耐硬化収縮性評価と同様に硬化シートを作製し、得られたシートを3cm角に切り取り、60℃の真空下で24時間乾燥させ、乾燥シートとして精確に秤量し、硬化物の乾燥状態の重量とした。乾燥シートを30℃の脱イオン水中に浸漬し、24時間と48時間時間経過した後、脱イオン水から取り出した直後の重量を秤量し、シートが飽和吸水状態に達したことを確認し、硬化物の飽和吸水状態の重量とした。飽和吸水率を下記式に従って算出し、硬化物の耐水性を下記の通り4段階分けて評価を行った。
飽和吸水率(%)=(飽和吸水状態の重量-乾燥状態の重量)/乾燥状態の重量×100%
◎:飽和吸水率は8%以下である。
○:飽和吸水率は8%を超えるが、10%以下である。
△:飽和吸水率は10%を超えるが、20%以下である。
×:飽和吸水率は20%を超える。
実施例17~22及び比較例5~8
表2で得られた活性エネルギー線硬化性組成物、(メタ)アクリレート(A)、重合性化合物(B)、光重合開始剤(C)と他の成分を表3に示す比例で秤量し、室温にて均一に混合して、実施例及び比較例のインク組成物を調製した。調製したインク組成物を用いて、下記方法により粘度測定を行い、又顔料分散液を含有する場合の顔料分散性評価を行った。インク組成物の活性エネルギー線硬化性と得られた硬化膜の表面乾燥性を評価し、更にインクジェット印刷を行い、印刷適性としてインク吐出安定性と印刷物の鮮明度の評価を行った。これらの評価の結果を表3に纏めて示した。なお、実施例18は、紫外線の代わりに電子線(EB)を照射して硬化させる例である。EB照射装置として、日新ハイボルテージ株式会社製のキュアトロンEBC-200-AA3を使用した(加速電圧:200kV、照射線量20kGy)。
インク組成物の粘度をJIS K5600-2-3に準じて、コーンプレート型粘度計(東機産業(株)社製 RE550型粘度計)により測定した。インクジェット式印刷用のインク組成物として、粘度は下記の通り4段階分けて評価した。
◎:5以上、100mPa・s未満
○:100以上、500mPa・s未満
△:500以上、2000mPa・s未満
×:2000mPa・s以上
調製したインク組成物を用いて、調製直後及び室温で2ヶ月静置後の顔料の凝集や沈殿状態を目視により観察し、顔料分散性は下記の通り4段階分けて評価した。
◎:調製直後も2ヶ月静置後も、顔料の凝集や沈殿は全く認められなかった。
〇:調製直後には全く認められなかったが、2ヶ月静置後、わずかに顔料の沈殿が認められた。
△:調製直後にはわずかか、2ヶ月静置後には顔料の凝集や沈殿が明瞭に認められた。
×:調製直後にも顔料の凝集や沈殿が明瞭に認められた。
得られたインク組成物を厚さ100μmのPETフィルムにバーコーター(RDS12)にて塗布し(乾燥後膜厚10μm)、紫外線照射(アイグラフィックス(株)社製インバーター式コンベア装置ECS-4011GX、メタハライドランプM04-L41)により硬化させ、印刷物を作製した。
前記方法にて印刷物を作成する際、インク組成物が完全硬化(べたつかない状態)するまでの積算光量を測定し、硬化性を評価した。
◎:1000mJ/cm2未満で完全硬化
○:1000以上、2000mJ/cm2未満で完全硬化
△:2000以上、5000mJ/cm2未満で完全硬化
×:完全硬化までに5000mJ/cm2以上が必要
前記方法にて作製した印刷物を、室温23℃、相対湿度50%の環境に5分間静置し、印刷面に上質紙を重ね、荷重1kg/cm2の負荷を1分間かけ、紙へのインクの転写程度を評価した。
◎:インクが乾燥し、紙への転写が全くなかった。
○:インクが乾燥し、紙への転写がわずかにあった。
△:インクがほぼ乾燥し、紙への転写があった。
×:インクが殆ど乾燥せず、紙への転写が多かった。
調整したインク組成物を市販インクジェットプリンター(富士フィルム社製 LuxelJet U V350GTW)に充填し、コート紙を用いて、ベタ画像を印刷し、インクの印刷適正を以下の方法にて評価した。
インクジェット印刷で得られた印刷物の印刷状態を目視により評価した。
◎:ノズル抜けなく、良好に印刷されている。
〇:わずかにノズル抜けがある。
△:広い範囲にてノズル抜けがある。
×:不吐出がある。
顔料を配合したインク組成物から得られたインクジェット印刷の印刷物の画像鮮明度を目視で観察した。
◎:インクにじみが全く見られなく、画像が鮮明であった。
○:インクにじみが殆どなく、画像が良好であった。
△:インクにじみが若干見られた。
×:インクにじみが著しくみられた。
実施例23~29と比較例9、10
表2で得られた活性エネルギー線硬化性組成物、(メタ)アクリレート(A)、重合性化合物(B)、光重合開始剤(C)と他の成分を表4に示す比例で秤量し、室温にて均一に混合して、実施例及び比較例の三次元造形用インク組成物を調製した。三次元造形用インク組成物を用いて、下記方法にて三次元造形物を作製し、得られた硬化物の強度、耐熱性、と造形精度を評価し、評価結果を表4に示す。
水平に設置したガラス板上に厚さ75μmの重剥離PETフィルム(東洋紡株式会社製、ポリエステルフィルムE7001)を密着させ、厚さ1mm、内部がJIS K6251に準拠した2号ダンベル型に打ち抜いたスペーサーを設置し、スペーサーの内側に各実施例と比較例で得られた三次元造形用インク組成物を各々充填した後、更にその上に厚さ50μmの軽剥離PETフィルム(東洋紡株式会社製、ポリエステルフィルムE7002)を重ね、紫外線を両面より照射(装置:アイグラフィックス製、インバーター式コンベア装置ECS-4011GX、メタルハライドランプ:アイグラフィックス製M04-L41、紫外線照度200mW/cm2、積算光量1000mJ/cm2)し、三次元造形用インク組成物を硬化させた。その後、両側の剥離PETフィルムを取り除いて、実施例用の硬化物及び比較例用の硬化物の試験片を得た。JIS K7161に従って、卓上形精密万能試験機(株式会社島津製作所製 オートグラフAGS-X)を用い、25℃の温度環境下にて、引張速度10mm/分、チャック間距離50mmの条件で引張強度を測定し、以下に示す基準により強度の評価を行った。
◎:引張強度40MPa以上
○:引張強度30MPa以上40MPa未満
△:引張強度20MPa以上30MPa未満
×:引張強度20MPa未満
前記引張試験用の試験片と同様に硬化物を作製し、示差走査熱量計(株式会社島津製作所製のDSC-60plus)により硬化物のガラス転移温度(Tg)を測定した。硬化物のガラス転移温度(Tg)の測定値から耐熱性について、以下の評価を行った。
○:硬化物Tg 80℃以上
△:硬化物Tg 40℃以上80℃未満
×:硬化物Tg 40℃未満
水平に設置したガラス板上に厚さ75μmの重剥離PETフィルム(東洋紡株式会社製、ポリエステルフィルムE7001)を密着させ、厚さ4mm、内部が10×80mmのスペーサーを設置し、スペーサーの内側に4mm厚分の各実施例と比較例で得られた三次元造形用インク組成物を各々充填した後、更にその上に厚さ50μmの軽剥離PETフィルム(東洋紡株式会社製、ポリエステルフィルムE7002)を重ね、紫外線を両側より照射(装置:アイグラフィックス製、インバーター式コンベア装置ECS-4011GX、メタルハライドランプ:アイグラフィックス製M04-L41、紫外線照度200mW/cm2、積算光量1,000mJ/cm2)し、インク組成物を硬化させた。その後、両側の剥離PETフィルムを取り除き、更に紫外線を所定の積算光量にて照射し(装置:株式会社アイテックシステム製、卓上バッチ式UV-LED硬化装置MUVBA-0.3×0.3×0.5、波長405nm、照度(UV-V)50mW/cm2、積算光量5,000mJ/cm2)、ポストキュアを行い、完全に硬化させた。その後、得られた硬化物を試験片として用いて、JIS K-7110に準じてアイゾット衝撃強度(ノッチ有)を測定し、耐衝撃性について、以下の評価を行った。なお、株式会社安田精機製作所製のアイゾット・シャルピー衝撃試験機「型式No.195-R」を使用した。なお、衝撃強度が高い程、耐衝撃性が高い。
◎:40J/m以上
○:30J/m以上40J/m未満
△:20J/m以上30J/m未満
×:20J/m未満
厚さ10mm、内部が10cm×1cmのスペーサーを用いて、前記強度評価と試験片作製と同様に、長さ10cm×幅1cm×厚さ1mmの耐水性評価用硬化物試験片を作製した。得られた試験片の造形直後の重量を測定した後、100mlの水の入ったビーカーに浸漬し、1日後に浸漬後の重量を測定した。浸漬前の重量と浸漬後の重量を下記式に代入して吸水率を測定し、以下に示す基準により耐水性の評価を行った。なお、吸水率が低い程、耐水性が高い。
◎:吸水率が2%未満
○:吸水率が2%以上、2.5%未満
△:吸水率が2.5%以上、3%未満
×:吸水率が3%以上
水平に設置したガラス板上に厚さ75μmの重剥離PETフィルム(東洋紡株式会社製、ポリエステルフィルムE7001)を密着させ、厚さ10mm、内部が10×10mmのスペーサーを設置し、スペーサーの内側に1mm厚分の各実施例と比較例で得られた三次元造形用インク組成物を各々充填した後、60℃で30秒間保温することで表面を平滑にした後、紫外線を照射(装置:アイグラフィックス製、インバーター式コンベア装置ECS-4011GX、メタルハライドランプ:アイグラフィックス製M04-L41、紫外線照度200mW/cm2)し、三次元造形用インク組成物を硬化させた。その後、三次元造形用インク組成物を各々1mm厚で充填、硬化を計10回繰り返し、10×10×10mmの硬化物を得た。得られた硬化物の高さについて測定した。又、得られた硬化物の側面を目視観察した。これらの結果を組み合わせ、以下の基準により造形精度を評価した。
◎:高さ10mm±0.1mm未満、かつ、側面に凹凸がない。
○:高さ10mm±0.1mm以上 ±0.2mm未満、又は、側面に僅かな凹凸がある。
△:高さ10mm±0.2mm以上 ±0.3mm未満、又は、側面に若干凹凸がある。
×:高さ10mm±0.3mm以上、又は、側面に明らかな凹凸がある。
実施例30~35と比較例11、12
表2で得られた活性エネルギー線硬化性組成物、(メタ)アクリレート(A)、重合性化合物(B)、光重合開始剤(C)と他の成分を表5に示す比例で秤量し、室温にて均一に混合して、実施例及び比較例の粘着剤組成物を調製した。粘着剤組成物を用いて、下記方法により粘着層、粘着シートを作製し、粘着剤組成物の硬化性、各種基材に対する密着性及び、得られた粘着層の透明性、粘着力、耐汚染性(リワーク性)、耐久性と耐黄変性を評価し、結果を表5に示した。なお、実施例30と33は、活性エネルギー線硬化後の粘着シートを80℃の恒温機に入れ、48時間のエージングにより架橋反応を完結させた後、粘着層の各種物性を評価した。
水平に設置したガラス板上に厚さ75μmの重剥離PETフィルム(東洋紡株式会社製、ポリエステルフィルムE7001)を密着させ、厚さ1mm、内部が60mm×100mmのスペーサーを設置し、スペーサーの内側に調製した実施例、比較例の活性エネルギー線硬化性粘着剤組成物を充填した後、更にその上に厚さ50μmの軽剥離PETフィルム(東洋紡株式会社製、ポリエステルフィルムE7002)を重ね、波長385nm、出力100mW/cm2のUVLEDランプにより積算光量が3000mJ/cm2となるように照射を行い、粘着剤組成物を硬化させた。その後、両側の剥離PETフィルムを取り除いて得られた硬化物(粘着層)に触れて硬化性を3段階に分けて評価した。
○:形状を保てる硬化物が得られ、硬化物に触れた際にタックは見られるが、液状の未硬化物の付着がない状態である。
△:形状を保てる硬化物が得られ、硬化物に触れた際にタックは見られるが、液状の未硬化物の付着がある状態である。
×:硬化が不十分で、形状を保てる硬化物が得られず、液状の残留物の付着が多量にみられる状態である。
前記同様に調製した活性エネルギー線硬化性粘着剤組成物を板状の各種基材(基板)上に塗布し、軽剥離セパレーター(シリコーンコートPETフィルム)で気泡を噛まないように卓上型ロール式ラミネーター機(Royal Sovereign製 RSL-382S)を用いて、粘着層が厚さ5μmになるように貼り合わせ、紫外線を照射(装置:アイグラフィックス製 インバーター式コンベア装置ECS-4011GX、メタルハライドランプ:アイグラフィックス製 M04-L41、紫外線照度:700mW/cm2、積算光量:5000mJ/cm2)した。その後、軽剥離セパレーターを剥がして、粘着層と基板からなる粘着シートを得た。得られた粘着シートを用い、JIS K 5600に準拠して、1mm角のマス目を100個作成し、セロハンテープを貼り付け、一気に剥がした時に基板側に粘着層が残ったマス目の数を数えて、下記基準により密着性を評価した。
◎:100個で剥離なし。
〇:95~99個で剥離なし。
△:70~94個で剥離なし。
×:0~69個で剥離なし。
温度23℃、相対湿度50%の条件下、前記粘着層をフィルム状又は板状の各種基材に転写し、重さ2kgの圧着ローラーを用いて2往復することにより加圧貼付し、同雰囲気下で30分間放置した。その後、引っ張り試験機(装置名:テンシロンRTA-100 ORIENTEC社製)を用いて、JIS Z0237に準じて剥離速度300mm/分にて180°剥離強度(N/25mm)を測定した。
◎:30(N/25mm)以上
○:15(N/25mm)以上、30(N/25mm)未満
△:8(N/25mm)以上、15(N/25mm)未満
×:8(N/25mm)未満
ヘイズメーター(日本電色工業社製、NDH-2000)を用いて、JIS K 7105に準拠し、ガラス基板の全光線透過率を測定した。温度23℃、相対湿度50%の条件下、ガラス基板に前記粘着層を転写し、ガラス基板と粘着層の全光線透過率を測定した。その後、ガラス板の透過率を差し引き、粘着層自体の透過率を算出し、透明性を下記の通り4段階分けて評価した。
◎:透過率は90%以上
○:透過率は85%以上、かつ90%未満
△:透過率は50%以上、かつ85%未満
×:透過率は50%未満
前記の粘着力の測定と同様に粘着シートを作製し、80℃、24時間放置した後、粘着層を剥がした後の基材フィルム表面の汚染(粘着層(糊)の残り状態)を目視によって観察した。
◎:汚染なし(糊残りがない)。
○:ごく僅かに汚染がある。
△:僅かに汚染がある。
×:汚染がある(糊残りがある)。
前記の粘着力の測定と同様に粘着シートを作製し、キセノンフェードメーター(SC-700-WA:スガ試験機社製)にセットし、70mW/cm2の強度の紫外線を、120時間照射した後、粘着シート上の粘着層の変色を目視によって観察した。
◎:黄変が目視で全く確認できない。
○:黄変が目視でごく僅かに確認できる。
△:黄変が目視で確認できる。
×:明らかな黄変が目視で確認できる。
前記の粘着力の測定と同様に粘着シートを作製し、温度85℃、相対湿度85%の条件下で100時間保持した後、粘着層の浮きや剥がれ、気泡、白濁の発生有無を目視によって観察、評価した。
◎:透明で、浮きや剥がれも気泡も発生しない。
○:ごく僅かな曇りがあるが、浮きや剥がれも気泡も発生しない。
△:僅かな曇り又は浮きや剥がれ、気泡がある。
×:極度な曇り又は浮きや剥がれ、気泡がある。
実施例36~41と比較例13、14
表2で得られた活性エネルギー線硬化性組成物、(メタ)アクリレート(A)、重合性化合物(B)、光重合開始剤(C)と他の成分を表6に示す比例で秤量し、室温にて均一に混合して、実施例及び比較例の接着剤組成物を調製した。接着剤組成物を用いて、下記方法により同種又は異種の板状基材を接着させ、接着剤試験片を作製し、接着力と耐衝撃性の評価を行い、結果を表6に示す。
得られた接着剤試験片を用いて、JIS K 6850に準じて、試験機としてテンシロンRTA-100(ORIENTEC社製)を使用し、引張速度10mm/分の条件で引張せん断強度を測定した。なお、引張せん断強度が高い程、接着力が高い。
◎:引張せん断強度が20MPa以上である。
○:引張せん断強度が15MPa以上、20MPa未満である。
△:引張せん断強度が10MPa以上、15MPa未満である。
×:引張せん断強度が10MPa未満である。
前記同様に得られた接着剤試験片を用いて、JIS K6855に準じて、衝撃試験機No.511(マイズ試験機社製)を使用し、衝撃はく離接着強さを測定した。なお、衝撃はく離接着強さが高い程、耐衝撃性が高い。
◎:衝撃はく離接着強さが20KJ/m2以上である。
○:衝撃はく離接着強さが15KJ/m2以上、20KJ/m2未満である。
△:衝撃はく離接着強さが10KJ/m2以上、15KJ/m2未満である。
×:衝撃はく離接着強さが10KJ/m2未満である。
実施例42~47と比較例15、16
表2で得られた活性エネルギー線硬化性組成物、(メタ)アクリレート(A)、重合性化合物(B)、光重合開始剤(C)と他の成分を表7に示す比例で秤量し、室温にて均一に混合して、実施例及び比較例の塗料組成物を調製した。塗料組成物を用いて各種基材上塗布し、塗料組成物の各種基材に対する濡れ性を評価した。又、塗料組成物をABS板に塗布し、UV、EB又はUVの後更にEB硬化を行い、塗料組成物の硬化性を評価し、得られた硬化塗膜の耐摩擦性を評価し、結果を表7に示す。
得られた各種の塗料組成物を各種基材にバーコーター(RDS 3)で塗布を行い、塗膜のハジキ具合を目視にて観察、濡れ性を下記の通り4段階分けて評価を行った。
◎:ハジキがなく、均一な塗膜である。
○:ハジキが極めて僅にあるが、ほぼ均一な塗膜である。
△:ハジキが幾分あるが、全体としてはほぼ均一な塗膜である。
×:ハジキが多く、不均一な塗膜である。
得られた各種の塗料組成物を厚さ3mmのABS樹脂板に、硬化後の膜厚さが25μmになるようにバーコーター(RDS 6)で塗布した。該樹脂板に対して、UV(紫外線照射装置:アイグラフィックス製 インバーター式コンベア装置ECS-4011GX、メタルハライドランプ:アイグラフィックス製 M04-L41、紫外線照度:700mW/cm2、積算光量:2000mJ/cm2)又はEB(EB照射装置:日新ハイボルテージ株式会社製のキュアトロンEBC-200-AA3、加速電圧:200kV、照射線量:20kGy)照射を行った。なお、表7で硬化方法でとしてUV後EBと記載している実施例は、それぞれUV線で照射した後更にEB線で照射したものである。得られた硬化塗膜を指で触り、指に塗料組成物の付着状態を確認し、硬化性を評価した。又目視観察により硬化塗膜の表面平滑性と塗膜の透明性を評価した。これらの評価結果を表7に示す。なお、外観評価において、顔料を含有する場合は、硬化塗膜の表面平滑性のみを評価した。
硬化性:
○:塗料組成物が付着しなくなった。
△:塗料組成物が僅かに付着した。
×:塗料組成物が付着した
塗膜外観:
◎:表面は平滑であり、塗膜は透明であった。
○:表面は平滑であり、塗膜は全体的に透明でわずかな白濁部分があった。
△:表面は凹凸であり又は塗膜は白濁部分があった。
×:表面は凹凸があり、かつ塗膜は白濁があった。
得られた硬化塗膜に対して、耐洗車摩耗試験装置(Amtec Kistler GmbH社製、Amtec laboratory Car Wash装置)を用いて、ISO20566に準拠して耐摩耗性評価を行った。摩耗試験前後の硬化塗膜の20°グロスをBYKガードナー社製光沢計で測定し、下記式によりグロス保持率を算出し、下記基準で塗膜の耐摩耗性を評価した。なお、グロス保持率が高い程、硬化塗膜の耐摩耗性が高い。
グロス保持率(%)=(摩擦後のグロス値)/(摩擦前のグロス値)×100%
求めたグロス保持率について、
○:グロス保持率 80%以上
△:グロス保持率 60%以上80%未満
×:グロス保持率 60%未満
実施例48~52と比較例17、18
表2で得られた活性エネルギー線硬化性組成物、(メタ)アクリレート(A)、重合性化合物(B)、光重合開始剤(C)と他の成分を表8に示す比例で秤量し、室温にて均一に混合して、実施例及び比較例の封止剤組成物を調製した。得られた封止剤組成物を用いて、下記方法により硬化した封止剤(封止剤硬化物)の作製及び物性評価を行った。
ガラス板(縦50mm×横50mm×厚さ5mm)上にシリコーン製のスペーサー(縦30mm×横15mm×厚さ3mm)をセットし、スペーサーの内部に銅箔(縦5mm×横50m×厚み80μm)を入れ、調製した活性エネルギー線硬化性封止剤組成物を注入した。十分に脱気した後、紫外線を照射(装置:アイグラフィックス製 インバーター式コンベア装置ECS-4011GX、メタルハライドランプ:アイグラフィックス製 M04-L41、紫外線照度:700mW/cm2、積算光量:1000mJ/cm2)し、封止剤硬化物を得た。得られた硬化物の特性を下記方法で評価し、結果を表8に示す。
得られた封止剤硬化物を温度23℃、相対湿度50%の雰囲気下で、24時間を静止した後、ヘイズメーター(日本電色工業社製、NDH-2000)により硬化物の透過率を測定し、透明性を下記の通り4段階分けて評価した。
◎:透過率は90%以上
○:透過率は85%以上、かつ90%未満
△:透過率は50%以上、かつ85%未満
×:透過率は50%未満
得られた封止剤硬化物を温度23℃、相対湿度50%の雰囲気下で、24時間を静止した後、硬化物の透過スペクトルを透過色測定専用機(TZ-6000、日本電色工業(株)製)により測定し、初期b値とした。その後、硬化物を85℃、相対湿度85%に設定した恒温恒湿機に500時間を静置し、耐湿熱黄変性の加速試験を行った。試験後の硬化物を同様に温度23℃、相対湿度50%の雰囲気下で24時間を静止し、透過色測定し、湿熱後b値とした。湿熱後b値と初期b値の差は変化値Δbとした(Δb=湿熱後b値-初期b値)。硬化物の耐湿熱黄変性は下記の通り4段階分けて評価した。
◎:初期b値、湿熱後b値は共に0.2以下、かつ、Δbは0.1以下である。
○:初期b値、湿熱後b値は何れか一つまたは共に0.2を超えるが、共に0.5以下であり、かつ、Δbは0.2以下である。
△:初期b値、湿熱後b値は何れか一つまたは共に0.5を超えるが、共に1.0以下であり、かつ、Δbは0.3以下である。
×:初期b値、湿熱後b値は何れか一つまたは共に1.0を超え、或いは、Δbは0.3を超える。
得られた硬化物から1gを切り取って、試験片として温度85℃×相対湿度95%の恒温恒湿機にセットし、48時間静置後、再び試験片の重量を測定し、下記の式により吸水率を算出し、耐水性を下記の通り4段階分けて評価した。なお、吸水率が低い程、硬化物の耐水性が高い。なお、吸水率が低い程、耐水性が高い。
吸水率(%)=(吸水後重量-吸水前重量)/吸水前重量×100%
◎:吸水率は1.0%未満
○:吸水率は1.0%以上、かつ2.0%未満
△:吸水率は2.0%以上、かつ3.0%未満
×:吸水率は3.0%以上
得られた硬化物から1gを切り取って、試験片として温度100℃に設定した恒温槽に静置し、乾燥窒素気流を24時間流して、その後再び試験片の重量を測定し、下記の式によりアウトガスの発生率を算出し、4段階分けて評価を行った。なお、アウトガスの発生率が低い程、耐アウトガス性が高い。
アウトガス発生率(%)=(試験後重量-試験前重量)/試験前重量×100%
◎:発生率は0.1%未満
○:発生率は0.1%以上、かつ0.3%未満
△:発生率は0.3%以上、かつ1.0%未満
×:発生率は1.0%以上
得られた硬化物を-40℃で30分間、次に100℃で30分間放置を1サイクルとして100回繰り返し、硬化物の状態を目視によって観察し、耐ヒートサイクル性を4段階分けて評価した。
◎:全く変化が見られない。
〇:わずかに気泡の発生が見られるが、クラックの発生が見られない。透明である。
△:多少の気泡或いはクラックの発生が見られ、わずかな曇である。
×:気泡又はクラックが全面的に発生し、半透明状態である。
前記の耐湿熱黄変性試験後、銅箔の表面を目視で観察し、硬化物の耐腐食性を4段階分けて評価した。
◎:腐食なし
○:僅かに腐食
△:少し腐食
×:著しい腐食耐腐食性を評価し、結果を表5に示す。
実施例53~58と比較例19、20
表2で得られた活性エネルギー線硬化性組成物、(メタ)アクリレート(A)、重合性化合物(B)、光重合開始剤(C)と他の成分を表9に示す比例で秤量し、室温にて均一に混合して、実施例及び比較例の爪化粧料を調製した。得られた爪化粧料を用いて、下記方法により硬化性及び得られた硬化膜の物性評価を行った。
実施例と比較例で調製した活性エネルギー線硬化性爪化粧料をナイロン6のテストピース(「SHT-N6(NC)」東レプラスチック精工株式会社製)上にバーコーターを用い、膜厚が10μmとなるように塗布し、その後、ジェルネイル専用UVLEDランプ(ビューティーネイラー製、波長405nm、48W)により紫外線照射を行い、硬化膜の表面に触れた際のタックがなくなる時間を4段階に分けて評価した。タックがなくなるまでに必要の時間が短い程、硬化性が高い。
◎:1分未満でタックがなくなる。
○:1分以上、3分未満でタックがなくなる。
△:3分以上、10分未満でタックがなくなる。
×:10分以上でもタックがなくならない。
得られた各実施例、比較例の光硬化性爪化粧料を用いて、前記同様にナイロン6のテストピース上に塗布し、3分間の光照射により硬化膜を作製した。得られた硬化膜を用いて、JIS K 5600に準拠し、カッターナイフで1mm四方の碁盤目を100個作製し、市販のセロハンテープを貼りあわせた後に剥離した際のテストピース上に残った碁盤目の個数を4段階に分けて評価した。テストピース上に残る碁盤目の個数が多い程、密着性が高い。
◎:残存した碁盤目の個数が100個である。
○:残存した碁盤目の個数が90~99個である。
△:残存した碁盤目の個数が60~89個である。
×:残存した碁盤目の個数が60個未満である。
密着性評価と同様に各実施例、比較例の硬化膜を作製し、得られた膜の表面を硬度HBの鉛筆で750gの荷重をかけて引き、剥離の発生有無と引っかき傷の有無を目視により確認し、3段階に分けて評価した。傷や剥離の発生が少ない程、表面硬度が高い。
○:傷も剥離も発生しなかった。表面硬度は鉛筆硬度HB以上を有する。
△:剥離は発生しなかったが、傷が発生した。
×:剥離が発生した。
密着性評価と同様に各実施例、比較例の硬化膜を作製し、膜の表面の光沢を目視により観察し、3段階に分けて評価を行った。
○:光沢がある。
△:光の反射は確認できるが、曇りがみられる。
×:光の反射が確認できず、光沢がない。
実施例59~63と比較例21、22
表2で得られた活性エネルギー線硬化性組成物、(メタ)アクリレート(A)、重合性化合物(B)、光重合開始剤(C)と他の成分を表10に示す比例で秤量し、室温にて均一に混合して、実施例及び比較例の加飾コート剤(加飾フィルム、加飾シート等の加飾成形、加飾加工に用いられる活性エネルギー線硬化性組成物)を調製した。得られた加飾コート剤を用いて、下記の加飾加工により積層体を作製し、得られた積層体の物性評価を行った。
得られた加飾コート剤を厚さ180μmのPCフィルム(「パンライトPC-2151」帝人社製)上にバーコーター(RDS 6)を用い、乾燥後膜厚が5μmとなるように塗布した後、80℃にて3分間加熱し、紫外線照射(高圧水銀ランプ 300mW/cm2、1,000mJ/cm2)して塗膜を硬化させ、ハードコート層を有する積層体を得た。得られた積層体を切り取り、ハードコート層の耐表面タック性、伸び率、鉛筆硬度、耐傷性、耐折り曲げ性と耐日焼け止め剤性を下記方法により評価し、結果を表10に示す。なお、実施例57と60は、活性エネルギー線硬化後の積層体を80℃の恒温機に入れ、8時間加熱処理後、各種物性を評価した。
得られた積層体を用いて、膜の表面を指で触り、べたつき具合を評価した。
◎:べたつきが全くない。
〇:若干のべたつきがあるが、表面に指の跡が残らない。
△:べたつきがあり、表面に指の跡が残る。
×:べたつきがひどく、表面に指が貼りつく。
得られた積層体を長さ50mm、幅15mmにカットし、テンシロン万能試験機RTA-100(オリエンテック社製)にチャック間距離25mmにて固定し、温度150℃に設定したオーブン中にて250mm/minの速度にて、外観を目視観察しながら一方向に引張り、コート層に割れ又は白化を生じたときの試験片の長さ(mm)を測定した。伸び率は下記方法により算出し、評価を行った。
伸び率(%)=(試験後試料片長さ/25)×100%
◎:伸び率が200%以上
〇:伸び率が150以上200%未満
△:伸び率が110%以上150%未満
×:伸び率が110%未満
積層体の試験片を用いて、JIS K 5600に準拠して、鉛筆を45°の角度で10mm程度引っ掻いた後、積層体の表面に傷の付かない最も硬い鉛筆を鉛筆硬度として、表面硬度を下記の通り評価した。
◎:鉛筆硬度が2H以上
○:鉛筆硬度がHB~H
△:鉛筆硬度が3B~B
×:鉛筆硬度が4B以下
積層体の試験片を#0000のスチールウールを加重200gにて10往復し、積層体の表面に目視にて観察し、耐傷性を評価した。
◎:膜の剥離や傷の発生は認められない。
○:膜の一部にわずかな細い傷が認められる。
△:膜全体に筋上の傷が認められる。
×:膜の剥離が生じる。
積層体の試験片をコート面が外側になるように180°に折り曲げ、1kgの重しを載せて10分間放置し、積層体の表面の割れの有無を目視にて観察し、耐折り曲げ性を評価した。
◎:まったく割れが見られなかった。
○:折り曲げ部が一部白化した。
△:折り曲げ部において一部割れが見られた。
×:折り曲げ部において割れが見られた。
積層体の試験片のコート面に日焼け止め剤であるUltraSheer DRY-TOUCH SUNSCREEN SPF100+(ジョンソン・エンド・ジョンソン社製)を直径1cm程度となるように塗布し、80℃にて6時間加熱し、放冷後、中性洗剤にて洗い流し、表面の状態を観察し、下記の通り耐日焼け止め剤性を評価した。
◎:日焼け止め剤の跡がまったく見られなかった。
○:日焼け止め剤を塗布した部分に透明な跡がわずかに見られる。
△:日焼け止め剤を塗布した部分に白く跡が残り、表面が膨れている。
×:日焼け止め剤を塗布した部分がべたつき、表面が剥がれている。
実施例64~68と比較例23、24
表2で得られた活性エネルギー線硬化性組成物、(メタ)アクリレート(A)、重合性化合物(B)、光重合開始剤(C)とその他の成分を秤量し、室温にて均一に混合して、活性エネルギー線硬化性歯科材料を調製した。目視により歯科材料の溶解性又は分散性(不溶性無機系フィラーや顔料等を配合する場合)を観察し、保存安定性を評価し、それらの結果を表11に示す。又、歯科材料を用いて、下記方法により歯科材料硬化物を作製し、歯科材料の硬化性、得られた歯科材料硬化物の表面平滑性、硬度、接着強度を評価し、結果を表11に示す。なお、実施例62と65は、活性エネルギー線硬化後の硬化体を80℃の恒温機に入れ、8時間加熱処理後、各種物性を評価した。
◎:得られた組成物は均一かつ透明なものであった。
〇:得られた組成物は均一であって、半透明なものであった。
△:得られた組成物は白濁し、均一性を判断し難いものであった。
×:得られた組成物は完全に混ざらないものであった。
得られた実施例及び比較例の組成物を遮光性スクリュー管に入れ、蓋を閉め、40℃で1ヶ月及び80℃で2週間の二条件で保管した。保管後の組成物の溶解または分散状態を確認し、保存安定性を評価した。
○:40℃で1ヶ月及び80℃で2週間の二条件は共に保管後の状態変化がなかった。
△:40℃で1ヶ月又は80℃で2週間の何れか一条件において保管後の状態変化が確認された。
×:40℃で1ヶ月及び80℃で2週間の二条件は共に保管後の状態変が確認された。
得られた実施例及び比較例の組成物を用い、中心に直径6mmの孔を有するポリテトラフルオロエチレン製のモールド(20mm×20mm×10mm)に組成物を充填し、ポリプロピレンフィルムで圧接し、歯科用光照射器(トクソーパワーライト、トクヤマデンタル社製、光出力密度700mW/cm2、照射面における光強度640〜650mW/cm2、光源はハロゲンランプ、照射口径8mm)をポリプロピレンフィルムに密着して30秒間照射し、ポリプロピレンフィルムを剥がして硬化体を手で触って、べたつき、未硬化成分の有無を確認した。
◎:べたつきが全くない(完全硬化)。
○:若干のべたつきがあるが、表面に指の跡が残らない(ほぼ完全硬化、未硬化成分の拭き取りは不要である)。
△:べとつきがあり、表面に指の跡が残る(不完全硬化、未硬化成分の拭き取りが必要である)。
×:べとつきがひどく、表面に指が貼りつく(未硬化成分が多く残存し、硬化膜として使用できない)。
前記硬化性評価で得られた硬化物の表面を目視にて観察し、平滑性や光沢性を確認し、表面平滑性を評価した。
◎:表面が平滑で、光沢がある。
○:表面がほぼ平滑で、うっすらと曇りまたは僅かな凹凸が見られる。
△:表面が全体的に曇っており、凹凸や粒状なものが多少確認される。
×:表面が全体的に曇って、粒状なものに覆われている。
前記硬化性評価で得られた硬化体の表面をバフ研磨したものを用い、松沢精機製微小硬度計で10g、20秒荷重でヌープ硬度を測定した。なお、測定温度は23℃であった。
◎:ヌープ硬度は200KHN以上(永久歯エナメル質相当)。
○:ヌープ硬度は70KHN以上、200KHN未満(象牙質相当)。
△:ヌープ硬度は70KHN未満。
×:硬化しなかったため、測定はできなかった。
牛下額前歯を注水下で#1000の耐水研磨紙で研磨し、平坦な接着用象牙質面を削り出し、圧縮空気を10秒間吹き付けて乾燥させ、直径3mmの穴の空いたテープを貼り付け、被着面を設定した。その後、公知の方法(特開2010-208964に記載方法を参考)により、接着試験片を作成した。接着試験片は37℃水中に24時間浸漬後、インストロン万能試験機(クロスヘッドスピード速度2mm/min)で引張接着強度を測定し、実施例及び比較例で得られた組成物のエナメル質と象牙質への接着力とした。なお、引っ張り接着強度の値は5個の試験片の平均値である。
◎:エナメル質と象牙質の接着強度は共に20Mpa以上。
○:エナメル質と象牙質の接着強度はいずれか一つだけ20Mpa以上。
△:エナメル質と象牙質の接着強度は共に7Mpa以上。
×:エナメル質と象牙質の接着強度はいずれも7Mpa未満。
Claims (16)
- 分子内にアミド基と環状置換基を有する(メタ)アクリレート(A)と、
分子内に1つ以上のエチレン性不飽和基を有する重合性化合物(B)(Aを除く)を含有する活性エネルギー線硬化性組成物であって、
重合性化合物(B)は炭素数1~36の鎖状置換基を有する重合性化合物(b1)及び/又は炭素数3~20の環状置換基を有する重合性化合物(b2)を含む活性エネルギー線硬化性組成物。 - (メタ)アクリレート(A)は環状置換基として飽和又は不飽和の多環式の脂肪族環、単環式又は多環式の芳香族環、飽和又は不飽和の脂肪族複素環、芳香族複素環から選択される1つ以上の置換基である請求項1に記載の活性エネルギー線硬化性組成物。
- (メタ)アクリレート(A)は(メタ)アクリレート基と環状置換基の間にアミド基を有する請求項1又は2に記載の活性エネルギー線硬化性組成物。
- 重合性化合物(B)はエチレン性不飽和基として、(メタ)アクリルアミド基、(メタ)アクリレート基、ビニル基、ビニルエーテル基、アルキルビニルエーテル基、アリル基、(メタ)アリルエーテル基とマレイミド基から選択される1種以上の基を有する請求項1~3のいずれか一項に記載の活性エネルギー線硬化性組成物。
- (メタ)アクリレート(A)の含有量は0.1~99.5質量%、重合性化合物(b1)の含有量は0.3~80質量%、重合性化合物(b2)の含有量は0.2~70質量%である請求項1~4のいずれか一項に記載の活性エネルギー線硬化性組成物。
- 硬化収縮率が5%以下である請求項1~5のいずれか一項に記載の活性エネルギー線硬化性組成物。
- 活性エネルギー線硬化性組成物の硬化物における飽和吸水率が10%以下である請求項1~6のいずれか一項に記載の活性エネルギー線硬化性組成物。
- 請求項1~7のいずれか一項に記載の活性エネルギー線硬化性組成物を含有するインク組成物。
- 請求項1~7のいずれか一項に記載の活性エネルギー線硬化性組成物を含有する二次元又は三次元造形用インク組成物。
- 請求項1~7のいずれか一項に記載の活性エネルギー線硬化性組成物を含有する粘着剤組成物。
- 請求項1~7のいずれか一項に記載の活性エネルギー線硬化性組成物を含有する接着剤組成物。
- 請求項1~7のいずれか一項に記載の活性エネルギー線硬化性組成物を含有する塗料組成物。
- 請求項1~7のいずれか一項に記載の活性エネルギー線硬化性組成物を含有する封止剤組成物。
- 請求項1~7のいずれか一項に記載の活性エネルギー線硬化性組成物を含有する爪化粧料。
- 請求項1~9のいずれか一項に記載の活性エネルギー線硬化性組成物を含有する加飾コート剤。
- 請求項1~7のいずれか一項に記載の活性エネルギー線硬化性組成物を含有する歯科材料。
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|---|---|---|---|
| CN202280075978.7A CN118251428A (zh) | 2021-11-17 | 2022-11-14 | 活性能量线固化性组合物 |
| EP22895583.7A EP4435021A4 (en) | 2021-11-17 | 2022-11-14 | COMPOSITION CURABLE BY ACTIVE ENERGY RADIATION |
| KR1020247018287A KR20240096630A (ko) | 2021-11-17 | 2022-11-14 | 활성 에너지선 경화성 조성물 |
| US18/708,452 US20250101241A1 (en) | 2021-11-17 | 2022-11-14 | Active energy ray curable composition |
| JP2023561589A JP7618305B2 (ja) | 2021-11-17 | 2022-11-14 | 活性エネルギー線硬化性組成物 |
| JP2024226931A JP2025039585A (ja) | 2021-11-17 | 2024-12-24 | 活性エネルギー線硬化性組成物 |
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| US (1) | US20250101241A1 (ja) |
| EP (1) | EP4435021A4 (ja) |
| JP (2) | JP7618305B2 (ja) |
| KR (1) | KR20240096630A (ja) |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7769832B1 (ja) * | 2025-07-30 | 2025-11-13 | サカタインクス株式会社 | 紫外線遮光用インク組成物、及びそれを用いたエンボス表面を有する基材の製造方法 |
| WO2025256899A1 (en) * | 2024-06-14 | 2025-12-18 | Altana New Technologies Gmbh | Composition for printing a three-dimensional object |
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-
2022
- 2022-11-14 EP EP22895583.7A patent/EP4435021A4/en active Pending
- 2022-11-14 US US18/708,452 patent/US20250101241A1/en active Pending
- 2022-11-14 JP JP2023561589A patent/JP7618305B2/ja active Active
- 2022-11-14 WO PCT/JP2022/042300 patent/WO2023090302A1/ja not_active Ceased
- 2022-11-14 KR KR1020247018287A patent/KR20240096630A/ko active Pending
- 2022-11-16 TW TW111143678A patent/TW202336047A/zh unknown
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| JP7769832B1 (ja) * | 2025-07-30 | 2025-11-13 | サカタインクス株式会社 | 紫外線遮光用インク組成物、及びそれを用いたエンボス表面を有する基材の製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| US20250101241A1 (en) | 2025-03-27 |
| KR20240096630A (ko) | 2024-06-26 |
| JP7618305B2 (ja) | 2025-01-21 |
| JP2025039585A (ja) | 2025-03-21 |
| EP4435021A1 (en) | 2024-09-25 |
| JPWO2023090302A1 (ja) | 2023-05-25 |
| TW202336047A (zh) | 2023-09-16 |
| EP4435021A4 (en) | 2025-10-22 |
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