WO2020202615A1 - 組成物、積層体及び被覆金属製品 - Google Patents
組成物、積層体及び被覆金属製品 Download PDFInfo
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- WO2020202615A1 WO2020202615A1 PCT/JP2019/041826 JP2019041826W WO2020202615A1 WO 2020202615 A1 WO2020202615 A1 WO 2020202615A1 JP 2019041826 W JP2019041826 W JP 2019041826W WO 2020202615 A1 WO2020202615 A1 WO 2020202615A1
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- HMGAGMXYJNRLHQ-UHFFFAOYSA-N COCCOC(c1ccc(cc(cc2)C(OC)=O)c2c1)=O Chemical compound COCCOC(c1ccc(cc(cc2)C(OC)=O)c2c1)=O HMGAGMXYJNRLHQ-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
- C08L67/03—Polyesters derived from dicarboxylic acids and dihydroxy compounds the dicarboxylic acids and dihydroxy compounds having the carboxyl- and the hydroxy groups directly linked to aromatic rings
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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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/185—Acids containing aromatic rings containing two or more aromatic rings
- C08G63/187—Acids containing aromatic rings containing two or more aromatic rings containing condensed aromatic rings
- C08G63/189—Acids containing aromatic rings containing two or more aromatic rings containing condensed aromatic rings containing a naphthalene ring
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/20—Polyesters having been prepared in the presence of compounds having one reactive group or more than two reactive groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L81/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur with or without nitrogen, oxygen or carbon only; Compositions of polysulfones; Compositions of derivatives of such polymers
- C08L81/06—Polysulfones; Polyethersulfones
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- 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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
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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
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
- C09D167/03—Polyesters derived from dicarboxylic acids and dihydroxy compounds the dicarboxylic acids and dihydroxy compounds having the carboxyl - and the hydroxy groups directly linked to aromatic rings
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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
- 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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- 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
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/65—Additives macromolecular
Definitions
- the present invention relates to compositions, laminates and coated metal products.
- the paint for the inner surface of a can is supplied on the assumption that the flavor and flavor of the contents of the can are not impaired and that it is used for a wide variety of cans.
- the required characteristics (1) There is no concern about toxicity of environmental hormones and environmental pollution, (2) withstands heat sterilization (retort) treatment (retort resistance), (3) excellent adhesiveness, curability, workability, etc. Can be mentioned.
- vinyl chloride-based resins and epoxy-phenol-based resins have been widely used as resins for can inner surface paints, but the problem of the above environmental hormones has been pointed out in both cases (especially in the case of vinyl chloride-based resins). It has been pointed out that the vinyl chloride monomer remaining in the resin is a substance having serious hygiene problems such as carcinogenicity. Further, the epoxy-phenolic resin has a high baking temperature, and as described above. The generation of environmental hormones becomes a problem.)
- a metal vapor deposition layer formed by depositing a metal such as aluminum, gold, silver, or platinum on a base material formed of a thermoplastic resin or the like an acrylic resin, a modified epoxy resin, or a modified epoxy is used.
- -It is known to apply amino resin or the like.
- the metal-deposited base material is widely used in various structures used for automobiles, home appliances, foods, clothing, etc., and in particular, in packaging materials, solar cells, organic EL, semiconductors, and other electronic devices.
- metal-deposited base materials on which aluminum is vapor-deposited are inexpensive and are therefore used for various purposes.
- An object of the present invention is to provide a composition that sufficiently satisfies workability, curability, retort resistance or heat resistance, and abrasion resistance.
- the present inventor has made various studies in order to obtain a composition that sufficiently satisfies the above-mentioned processability, curability, retort resistance or heat resistance, and abrasion resistance, and a solvent (also referred to as a solvent in the present specification). ), Particles of the thermoplastic resin (A) not dissolved in the solvent, and a composition containing the thermoplastic resin (B) dissolved in the solvent were prepared.
- the present inventor has found that the coating film obtained by coating this composition sufficiently satisfies the above-mentioned required characteristics, and has completed the present invention.
- the present invention is a composition characterized by containing a solvent, particles of a thermoplastic resin (A) that is not dissolved in the solvent, and a thermoplastic resin (B) that is dissolved in the solvent. ..
- composition of the present invention can sufficiently exhibit the properties required for a metal coating material, such as workability, curability, retort resistance or heat resistance, and abrasion resistance.
- composition of the present invention contains a solvent, particles of the thermoplastic resin (A) which is not dissolved in the solvent, and the thermoplastic resin (B) which is dissolved in the solvent.
- thermoplastic resin used as the thermoplastic resin (A) not dissolved in the solvent and the thermoplastic resin (B) dissolved in the solvent include polyethylene terephthalate and polyethylene iso.
- Aromatic polyester resins such as phthalate, polyethylene isophthalate naphthalate (PIN), polypropylene terephthalate, polybutylene terephthalate, polyethylene naphthalate (PEN), polybutylene naphthalate (PBN), amorphous polyarylate, liquid crystal polyester; polylactic acid, Aliper polyester resins such as polyglycolic acid, polyethylene alkanoate, polybutylene alkanoate, polyhydroxy alkanoate, and polycaprolactone; polyamide resins such as nylon 6, nylon 6, 6, nylon 12, MXD6 nylon; polycarbonate resin; polychloride Vinyl, polyvinylidene chloride, polyolefin, polystyrene, (meth) acrylic resin, acrylonitrile-butadiene-styrene (ABS) resin, polyurethane resin, vinyl chloride-vinylidene chloride-acrylonitrile copolymer, acrylonitrile-styrene (AS) resin, vinyl
- thermoplastic resin is prepared with respect to the solvent so that the thermoplastic resin (A) which is not dissolved in the solvent and the thermoplastic resin (B) which is dissolved in the solvent are present in the solvent in the composition of the present invention. It can be appropriately selected in consideration of the solubility.
- the thermoplastic resin (A) that is not dissolved in the solvent and the thermoplastic resin (B) that is dissolved in the solvent may be obtained from resins having the same composition, but may be obtained from resins having different compositions. It is preferably obtained. In other words, it is preferable that the thermoplastic resin (A) that is not dissolved in the solvent has a different polymer species from the thermoplastic resin (B) that is dissolved in the solvent.
- thermoplastic resin (A) that is not dissolved in the solvent and the thermoplastic resin (B) that is dissolved in the solvent are obtained from resins having different compositions, the balance of physical properties, for example, crystallinity, is obtained. , The balance of non-crystallinity can be preferably adjusted, and the effect of the present invention becomes remarkable.
- the thermoplastic resin (A) which is not dissolved in the solvent and the thermoplastic resin (B) which is dissolved in the solvent are resins having different compositions, for example, A part of the resin having the same composition as the particles of the thermoplastic resin (A) which is not dissolved in the solvent may be dissolved in the solvent.
- the particles of the thermoplastic resin (A) that are not dissolved in the solvent preferably contain polybutylene naphthalate and / or polyethylene naphthalate.
- the polybutylene naphthalate may have at least a part of a structural unit (repeating unit) represented by the following formula (1), but it may be substantially composed of the structural unit. preferable.
- a structural unit represented by the following formula (1)
- the terminal group of the polybutylene naphthalate a hydroxyl group and a carboxyl group are preferable, but the terminal group is not limited thereto.
- the polyethylene naphthalate may have at least a part of a structural unit (repeating unit) represented by the following formula (2), but it is preferably substantially composed of the structural unit. ..
- a structural unit represented by the following formula (2)
- the terminal group of the polyethylene naphthalate a hydroxyl group and a carboxyl group are preferable, but the terminal group is not limited thereto.
- the thermoplastic resin (A) which is not dissolved in the solvent according to the present invention preferably has a solubility in the solvent at 25 ° C. of 10% by mass or less, preferably 8% by mass or less. More preferably, it is more preferably 5% by mass or less, and particularly preferably it is substantially insoluble in a solvent.
- the number average particle diameter of the particles of the thermoplastic resin (A) not dissolved in the solvent according to the present invention is preferably 10 nm to 1000 ⁇ m, more preferably 100 nm to 500 ⁇ m, and further preferably 0.5 to 30 ⁇ m. It is particularly preferably 1 to 10 ⁇ m. If the number average particle size exceeds 1000 ⁇ m, there is a tendency that the film thickness of the coating film becomes large, or when a thin film is formed, problems such as not forming a continuous film tend to occur. On the other hand, when the number average particle size is smaller than 10 nm, the viscosity of the obtained suspension tends to be high, and the separation operation tends to be difficult.
- the number average particle size was obtained by diluting particles of the thermoplastic resin (A) insoluble in a solvent with methanol, applying the mixture to a PET film using a spin coater, and drying the particles.
- the coating film is measured with a scanning electron microscope (SU1510, manufactured by Hitachi High-Technologies Corporation) or an optical microscope (VHX-2000, manufactured by Keyence Corporation).
- the particles of the thermoplastic resin (A) that are not dissolved in the solvent can be obtained, for example, by once dissolving the thermoplastic resin (A) in the solvent at a high temperature and then cooling.
- the temperature of the solvent for dissolving the thermoplastic resin (A) is preferably 70 to 200 ° C.
- the temperature is more preferably 130 to 190 ° C, further preferably 140 to 185 ° C. If the temperature of the solvent is less than 70 ° C., the thermoplastic resin (A) tends to be difficult to dissolve, and if it exceeds 200 ° C., the thermoplastic resin (A) or the solvent tends to be decomposed and discolored yellow.
- thermoplastic resin (A) In order to dissolve the thermoplastic resin (A) in a solvent, ultrasonic waves, a stirrer or the like may be used.
- the stirrer include a homogenizer, a homomixer, a roll mill, a bead mill and the like, and one or more of these can be used.
- the blending amount of the thermoplastic resin (A) is preferably 1 to 30% by mass, more preferably 1 to 20% by mass in the solution. If the blending amount is less than 1% by mass, there is a problem in terms of productivity. On the other hand, if it exceeds 30% by mass, the thermoplastic resin (A) tends to be difficult to dissolve.
- the means for cooling the solution of the thermoplastic resin (A) is not particularly limited, and the solution may be left at room temperature or a cooling device such as a heat exchanger may be used.
- a cooling method using a heat exchanger the solution of the thermoplastic resin (A) itself may be cooled by using a heat exchanger, or cooled to 20 to ⁇ 90 ° C. by using a heat exchanger. It may be cooled by mixing the above solvent with the solution of the thermoplastic resin (A).
- thermoplastic resin (B) dissolved in a solvent contains at least one selected from the group consisting of polyethylene isophthalate naphthalate, polyether sulfone, liquid polyester, and polycarbonate. Is preferable.
- the polyethylene isophthalate naphthalate may have at least a part of a naphthalenedicarboxylic acid component (a constituent unit derived from naphthalenedicarboxylic acid) and an isophthalic acid component (a constituent unit derived from isophthalic acid).
- naphthalenedicarboxylic acid examples include 1,4-naphthalenedicarboxylic acid, 1,5-naphthalenedicarboxylic acid, 1,8-naphthalenedicarboxylic acid, 2,6-naphthalenedicarboxylic acid, and 2,7-naphthalenedicarboxylic acid. .. From these, one kind or two or more kinds can be selected and used. It is preferably 2,6-naphthalenedicarboxylic acid (NDC).
- NDC 2,6-naphthalenedicarboxylic acid
- the polyethylene isophthalate naphthalate preferably has at least a part of a structural unit (repeating unit) represented by the following formula (3), and is substantially composed of the structural unit. Is more preferable.
- a structural unit represented by the following formula (3)
- the terminal group of the polyethylene isophthalate naphthalate a hydroxyl group and a carboxyl group are preferable, but the terminal group is not limited thereto.
- the content of the isophthalic acid component (constituent unit derived from isophthalic acid) in the above polyethylene isophthalate naphthalate may exceed 10 mol% when the total acid component (constituent unit derived from the total acid component) is 100 mol%. It is more preferably 15 mol% or more, further preferably 20 mol% or more, further preferably 30 mol% or more, and particularly preferably 40 mol% or more.
- the content of the constituent unit derived from isophthalic acid is preferably 90 mol% or less, more preferably 85 mol% or less, further preferably 80 mol% or less, and 70 mol% or less. Is more preferable, and 60 mol% or less is particularly preferable.
- the content of the naphthalenedicarboxylic acid component (constituent unit derived from naphthalenedicarboxylic acid) in the polyethylene isophthalate naphthalate is preferably 10 mol% or more, assuming that the structural unit derived from the total acid component is 100 mol%. It is more preferably 15 mol% or more, further preferably 20 mol% or more, further preferably 30 mol% or more, and particularly preferably 40 mol% or more.
- the content of the constituent unit derived from the naphthalene dicarboxylic acid is preferably less than 90 mol%, more preferably 85 mol% or less, further preferably 80 mol% or less, and 70 mol%. It is more preferably less than or equal to 60 mol% or less.
- the total content of the isophthalic acid component and the naphthalenedicarboxylic acid component (a constituent unit derived from isophthalic acid and a constituent unit derived from naphthalenedicarboxylic acid) in the above polyethylene isophthalate naphthalate is 100 mol% based on the constituent unit derived from the total acid component.
- it is preferably 50 mol% or more, more preferably 60 mol% or more, further preferably 70 mol% or more, further preferably 80 mol% or more, and 90 mol% or more. Is particularly preferable, and 100 mol% is most preferable.
- the ratio (molar ratio) of the isophthalic acid-derived structural unit and the naphthalenedicarboxylic acid-derived structural unit in the polyethylene isophthalate naphthalate is preferably 10/90 to 90/10, and is preferably 15/85 to 85/15. It is more preferably 20/80 to 80/20, further preferably 30/70 to 70/30, and particularly preferably 40/60 to 60/40.
- the content of the ethylene glycol component (constituent unit derived from ethylene glycol) in the polyethylene isophthalate naphthalate may be 30 mol% or more when the total glycol component (constituent unit derived from total glycol) is 100 mol%. It is preferably 50 mol% or more, more preferably 90 mol% or more, and particularly preferably 100 mol%.
- the number average molecular weight (Mn) of the polyethylene isophthalate naphthalate is preferably 800 or more, more preferably 1000 or more, and further preferably 2000 or more.
- the number average molecular weight (Mn) is preferably 40,000 or less, more preferably 30,000 or less, and even more preferably 20,000 or less.
- the method for measuring the number average molecular weight is as described in Examples.
- the total amount of the acid value and the hydroxyl value of the polyethylene isophthalate naphthalate is preferably 40 eq / t or more, more preferably 50 eq / t or more, further preferably 65 eq / t or more, and 100 eq. It is particularly preferable that it is / t or more.
- the total amount of the acid value and the hydroxyl value is preferably 4000 eq / t or less, more preferably 2500 eq / t or less, further preferably 2000 eq / t or less, and 1000 eq / t or less. It is particularly preferable to have.
- the method for measuring the acid value and the hydroxyl value is as described in Examples.
- the polyethylene isophthalate naphthalate can be produced by a known polycondensation method for polyester.
- a direct polymerization method in which an acid component and a glycol component are esterified to obtain an oligomer and then melt polycondensed at a high temperature under reduced pressure, a lower alkyl ester compound having 1 to 2 carbon atoms and a glycol component of the acid component are used.
- Examples thereof include a transesterification method in which an oligomer is obtained by transesterification and then melt-polycondensed at a high temperature under reduced pressure.
- the polyethylene isophthalate naphthalate contains a divalent or higher acid component Z other than the isophthalic acid component and the naphthalenedicarboxylic acid component, and the ethylene glycol described above, as long as the contents of the isophthalic acid component and the naphthalenedicarboxylic acid component are not exceeded.
- a structural unit derived from one or several kinds of monomers composed of a divalent or higher valent glycol component Y other than the ethylene glycol component may be contained.
- a polymerization catalyst When polycondensation for producing the above polyethylene isophthalate naphthalate is performed, a polymerization catalyst may be used.
- the polymerization catalyst include titanium compounds (tetra-n-butyl titanate, tetraisopropyl titanate, titaniumoxyacetylacetonate, etc.), antimony compounds (tributoxyantimony, antimony trioxide, etc.), and germanium compounds (tetra-n-butoxy). Germanium, germanium oxide, etc.), zinc compounds (zinc acetate, etc.), aluminum compounds (aluminum acetate, aluminum acetyl acetate, etc.) and the like can be mentioned.
- the above polymerization catalyst may be used alone or in combination of two or more. Of these, titanium compounds are preferable from the viewpoint of polymerization reactivity.
- Examples of the divalent or higher valent acid component Z other than the isophthalic acid component and the naphthalenedicarboxylic acid component include a constituent unit derived from an alicyclic polyvalent carboxylic acid, a constituent unit derived from an aliphatic polyvalent carboxylic acid, or an aromatic polyvalent carboxylic acid. It is preferably a constituent unit derived from an acid.
- Examples of the alicyclic polyvalent carboxylic acid include alicyclic dicarboxylic acids such as 1,4-cyclohexanedicarboxylic acid, 1,3-cyclohexanedicarboxylic acid, 1,2-cyclohexanedicarboxylic acid and its acid anhydride. Can be done.
- aliphatic polyvalent carboxylic acid examples include aliphatic dicarboxylic acids such as succinic acid, adipic acid, azelaic acid, sebacic acid, dodecanedioic acid, and dimer acid.
- aromatic polyvalent carboxylic acids include aromatic dicarboxylic acids such as terephthalic acid, orthophthalic acid, biphenyldicarboxylic acid, diphenic acid, and 5-hydroxyisophthalic acid.
- sulfoterephthalic acid 5-sulfoisophthalic acid, 4-sulfophthalic acid, 4-sulfonaphthalene-2,7-dicarboxylic acid, 5- (4-sulfophenoxy) isophthalic acid, sulfoterephthalic acid, and / or theirs.
- aromatic dicarboxylic acids having a sulfonic acid group such as a metal salt or an ammonium salt or a sulfonic acid base. From these, one kind or two or more kinds can be selected and used.
- Aromatic dicarboxylic acid or aliphatic dicarboxylic acid is preferable, and terephthalic acid, adipic acid or sebacic acid is more preferable.
- the divalent or higher valent glycol component Y other than ethylene glycol includes a constituent unit derived from an aliphatic glycol, a constituent unit derived from an alicyclic glycol, a constituent unit derived from an ether bond-containing glycol, or an aromatic. It is preferably a structural unit derived from the contained glycol.
- aliphatic glycols are 1,2-propylene glycol, 1,3-propanediol, 1,4-butanjiol, 1,5-pentanediol, 2-methyl-1, 3-Propanediol, neopentylglycol, 1,6-hexanediol, 3-methyl-1,5-pentandiol, 1,7-heptanediol, 1,8-octanediol, 1,9-nonandio -L, 2-ethyl-2-butylpropanediol, hydroxypivalate neopentyl glycol ester, dimethylol heptane, 2,2,4-trimethyl-1,3-pentanediol and the like can be mentioned.
- alicyclic glycols examples include 1,4-cyclohexanediol, 1,4-cyclohexanedimetalol, tricyclodecanediol, tricyclodecanedimethylol, spiroglycol, hydrogenated bispheno. -Lu A, an ethylene oxide adduct of hydrogenated bisphenol A, a propylene oxide adduct, and the like can be mentioned.
- ether bond-containing glycols examples include diethylene glycol, triethylene glycol, dipropylene glycol, polyethylene glycol, polypropylene glycol, polytetramethylene glycol, and neopentyl glycol ethylene.
- Oxide adducts or neopentyl glycol propylene oxide adducts may also be used if desired.
- aromatic-containing glycols include paraxylene glycol, metaxylene glycol, ortho-xylene glycol, 1,4-phenylene glycol, ethylene oxide adduct of 1,4-phenylene glycol, Add 1 to several moles of ethylene oxide or propylene oxide to each of the two phenolic adducts of bisphenols, such as bisphenol A, ethylene oxide adduct of bisphenol A, and propylene oxide adduct.
- the glycols and the like obtained in the above can be illustrated. From these, one kind or two or more kinds can be selected and used.
- An aliphatic glycol or an ether bond-containing glycol is preferable, and 1,4-butanediol or diethylene glycol is more preferable.
- a trifunctional or higher functional compound may be copolymerized with an isophthalic acid component, a naphthalene dicarboxylic acid component and / or an ethylene glycol component.
- the trifunctional or higher functional compound include a trifunctional or higher functional polycarboxylic acid and a trifunctional or higher functional polyol.
- trifunctional or higher functional polycarboxylic acids include trimellitic acid, trimellitic anhydride, pyromellitic acid, methylcyclohexcentricarboxylic acid, oxydiphthalic dianhydride (ODPA), 3,3', 4,4'-benzophenone.
- Tetracarboxylic acid dianhydride (BTDA), 3,3', 4,4'-diphenyltetracarboxylic acid dianhydride (BPDA), 3,3', 4,4'-diphenylsulfone tetracarboxylic acid dianhydride (BPDA) DSDA), 4,4'-(hexafluoroisopropylidene) diphthalic acid dianhydride (6FDA), 2,2'-bis [(dicarboxyphenoxy) phenyl] propane dianhydride (BSAA) and the like.
- BTDA Tetracarboxylic acid dianhydride
- BPDA 4,4'-diphenyltetracarboxylic acid dianhydride
- BPDA 3,3', 4,4'-diphenylsulfone tetracarboxylic acid dianhydride
- 6FDA 4,4'-(hexafluoroisopropylidene) diphthalic acid dianhydride
- BSAA 2,
- Examples of the functional or higher polyol include glycerin, trimethylolethane, trimethylolpropane, mannitol, sorbitol, pentaerythritol, ⁇ -methylglucoside and the like.
- the acid value and the hydroxyl value described above can be imparted by a conventionally known method.
- a method for imparting an acid value a depolymerization method in which a compound having a carboxylic acid anhydride group is added in the molecule in the late stage of polymerization, a prepolymer (oligomer) stage in which a high acid value is given, and then this is polymerized.
- oligomer oligomer
- there is a method of obtaining polyethylene isophthalate naphthalate having an acid value but the former depolymerization method is preferable because it is easy to operate and it is easy to obtain a target acid value.
- examples of the carboxylic acid monoanhydride include phthalic anhydride, succinic anhydride, and maleic anhydride.
- Trimellitic anhydride, itaconic anhydride, citraconic anhydride, monoanhydrides such as 5- (2,5-dioxotetrahydrofurfuryl) -3-cyclohexene-1,2-dicarboxylic acid anhydride, phthalic anhydride, phthalic anhydride, Tetrahydrophthalic anhydride, etc. can be mentioned, and one or more of these can be selected and used.
- trimellitic anhydride is preferable from the viewpoint of versatility and economy.
- examples of the carboxylic acid polyanhydride include pyromellitic dianhydride, 1,2,3,4.
- the carboxylic acid monoanhydride and the carboxylic acid polyanhydride can be used alone or in combination. You can also.
- the above-mentioned polyether sulfone is a polymer having a repeating unit containing an aromatic ring, a sulfonyl bond (-SO 2- ) and an ether bond (-O-).
- the polyether sulfone preferably has at least one of the structural units (repeating units) represented by the following formulas (4-1) to (4-3) in at least a part thereof, and is substantially from the structural unit. It is more preferable that the structure is as follows.
- As the terminal group of the polyether sulfone a hydroxyl group and a carboxyl group are preferable, but the terminal group is not limited thereto.
- the liquid crystal polyester is a polyester resin usually having at least a part of a structural unit having an aromatic group, and for example, it is preferable to have a structural unit represented by the following general formula (5-1). Further, the liquid crystal polyester according to the present invention may further have a structural unit represented by the following general formula (5-2) and / or a structural unit represented by the following general formula (5-3). ..
- As the terminal group of the liquid crystal polyester a hydroxyl group and a carboxyl group are preferable, but the terminal group is not limited thereto. -[O-Ar 1- CO]-(5-1) -[O-Ar 2- O]-(5-2) -[OR 1- O]-(5-3)
- Ar 1 represents an aryl group having 6 to 18 carbon atoms which may have a substituent.
- the aryl group include a phenylene group, a trilene group, a naphthylene group, a biphenylene group and the like, but a phenylene group and a naphthylene group are more preferable.
- the substituent include a hydrocarbon group having 1 to 12 carbon atoms.
- Ar 2 represents an aryl group having 6 to 18 carbon atoms which may have a substituent.
- aryl group for example, a biphenylene group is preferable.
- substituent include a hydrocarbon group having 1 to 12 carbon atoms.
- R 1 represents an alkylene group having 1 to 8 carbon atoms.
- the alkylene group is preferably an alkylene group having 1 to 4 carbon atoms, and more preferably an ethylene group.
- the liquid crystal polyester according to the present invention preferably further has a structural unit represented by the following general formula (6-1) and / or a structural unit represented by the following general formula (6-2).
- 6-1 a structural unit represented by the following general formula
- 6-2 a structural unit represented by the following general formula
- Ar 3 represents an aryl group having 6 to 18 carbon atoms which may have a substituent.
- the aryl group include a phenylene group, a trilene group, a naphthylene group, a biphenylene group and the like, but a phenylene group and a naphthylene group are more preferable, and a phenylene group is further preferable.
- the substituent include a hydrocarbon group having 1 to 12 carbon atoms.
- Ar 4 represents an aryl group having 6 to 18 carbon atoms which may have a substituent.
- aryl group for example, a phenylene group is preferable.
- substituent include a hydrocarbon group having 1 to 12 carbon atoms.
- the structural unit represented by the general formula (6-1) is preferable.
- the liquid crystal polyester according to the present invention contains a soft component (for example, a nitrogen atom) other than the structural unit represented by the general formula (6-1) and the structural unit represented by the general formula (6-2). It may have a structural unit derived from (monomer). As a result, the solubility of the resin in the solvent can be made higher.
- a soft component for example, a nitrogen atom
- liquid crystal polyester As a commercially available product of the liquid crystal polyester according to the present invention, for example, a liquid crystal polymer (VR300, VR500, both manufactured by Sumitomo Chemical Co., Ltd.) and the like are preferable.
- a liquid crystal polymer VR300, VR500, both manufactured by Sumitomo Chemical Co., Ltd.
- the polycarbonate according to the present invention refers to a polycarbonate group in which the bonding portion between the structural units of the monomers is a carbonate group (—O—CO—O—), and has a structural unit represented by the following general formula (7). Is preferable. -[Ar 5- C (CH 3 ) 2- Ar 6- O-CO-O]-(7)
- Ar 5 and Ar 6 represent aryl groups having 6 to 18 carbon atoms which may have the same or different substituents.
- the aryl group include a phenylene group, a trilene group, a naphthylene group, a biphenylene group and the like, but a phenylene group and a naphthylene group are more preferable, and a phenylene group is further preferable.
- the substituent include a hydrocarbon group having 1 to 12 carbon atoms.
- the thermoplastic resin (B) dissolved in the solvent according to the present invention preferably has a glass transition temperature (Tg) of 70 ° C. or higher, more preferably 75 ° C. or higher, and more preferably 80 ° C. or higher. Is even more preferable.
- the glass transition temperature is preferably 130 ° C. or lower, more preferably 110 ° C. or lower, and even more preferably 90 ° C. or lower.
- the glass transition temperature of the polyethylene isophthalate naphthalate is preferably 70 ° C. or higher and 130 ° C. or lower.
- the method for measuring the glass transition temperature is as described in Examples.
- thermoplastic resin (B) dissolved in the solvent according to the present invention preferably has a solubility in the solvent at 25 ° C. of 10% by mass or more, more preferably 20% by mass or more, and 30% by mass or more. It is more preferably mass% or more.
- the mass ratio of the particles of the thermoplastic resin (A) not dissolved in the solvent to the thermoplastic resin (B) dissolved in the solvent is 1: 1 to 20: 1. It is preferable to have.
- the mass ratio is more preferably 2: 1 to 15: 1, and even more preferably 5: 1 to 10: 1.
- thermoplastic resin (A) which is not dissolved in the solvent and the thermoplastic resin (B) which is dissolved in the solvent are blended with resins having different compositions from each other. Is preferably 5% by mass or more, more preferably 10% by mass or more, still more preferably 15% by mass or more, 20% by mass, based on 100% by mass of the composition solid content. It is particularly preferable that the mass is% or more. If the total amount of the thermoplastic resin is less than 5% by mass, the desired effect may not be obtained.
- the upper limit of the blending amount of the entire thermoplastic resin is not particularly limited and may be 100% by mass or less, but when an additive such as a coloring material is separately blended, it may be, for example, 70% by mass or less. Good.
- the solvent in the composition of the present invention is not particularly limited, but is an ester solvent such as ethyl acetate, butyl acetate, propylene carbonate, 4-butyrolactone, and two bases such as dimethyl adipate, dimethyl glutarate, and dimethyl succinate.
- an ester solvent such as ethyl acetate, butyl acetate, propylene carbonate, 4-butyrolactone, and two bases such as dimethyl adipate, dimethyl glutarate, and dimethyl succinate.
- Acid ester solvent such as cyclohexanone, isophorone, methylisobutylketone, hydrocarbon solvent such as cyclohexane, toluene, xylene, alcohol solvent such as benzyl alcohol, cyclohexanol, ethylene glycol monobutyl ether, dipropylene glycol butyl ether , 2- (2-methoxyethoxy) ethanol, ether solvents such as bis (2-methoxyethyl) ether, amide solvents such as formamide, dimethylformamide, dimethylacetamide, pyrrolidone solvents such as N-methyl-2-pyrrolidone.
- ketone solvent such as cyclohexanone, isophorone, methylisobutylketone
- hydrocarbon solvent such as cyclohexane, toluene, xylene
- alcohol solvent such as benzyl alcohol, cyclohexanol, ethylene glycol monobutyl
- ester-based solvents ether-based solvents, and pyrrolidone-based solvents are preferable, pyrrolidone-based solvents are more preferable, and N-methyl-2-pyrrolidone is even more preferable.
- Pyrrolidone-based solvent such as N-methyl-2-pyrrolidone
- a preferable thermoplastic resin (A) polybutylene naphthalate and / or polyethylene naphthalate which constitutes particles and is not dissolved in the solvent
- a combination of a dissolved thermoplastic resin (B) with a preferred one is particularly preferable.
- the total amount of the thermoplastic resin to be blended is preferably 1 to 30% by mass in the solution, and more preferably 5 to 25% by mass. If the blending amount is less than 1% by mass, there is a problem in terms of productivity. Further, if it exceeds 30% by mass, it may not dissolve.
- the composition of the present invention may consist only of a solvent, particles of the thermoplastic resin (A) that is not dissolved in the solvent, and the thermoplastic resin (B) that is dissolved in the solvent. Further, a solvent, particles of the thermoplastic resin (A) not dissolved in the solvent, the thermoplastic resin (B) dissolved in the solvent, and other resins and / or additives other than the thermoplastic resin. It may consist of a mixture with.
- the other resin is not particularly limited as long as it is generally used for paints, and examples thereof include thermosetting resins such as phenol resin, urea resin, melamine resin, silicone resin, alkyd resin, and epoxy resin. .. Although these are contrary to the original purpose, they do not interfere with the effects of the present invention.
- the blending ratio of the other resin may be appropriately set, but the particles of the thermoplastic resin (A) which is not dissolved in the solvent and the heat dissolved in the solvent are used.
- the blending ratio of the other resin is preferably 10% by mass or less, and more preferably 1% by mass or less, based on 100% by mass of the total amount of the plastic resin (B) and the other resin. It is further preferred that the composition of the present invention is substantially free of other resins.
- composition of the present invention When the composition of the present invention is coated on a metal material, it is basically coated as a suspension coating material containing the above resin particles.
- the composition of the present invention may further contain a curing agent.
- the curing agent is preferably one that reacts with any of the above-mentioned thermoplastic resins to form a crosslinked structure, and for example, epoxy compounds such as phenol resin, oxazoline resin and polyvalent epoxy compound, urea type, melamine type and benzoguanamine type. Examples thereof include amino resins, isocyanate compounds, carbodiimide-based cross-linking agents, aziridine-based cross-linking agents, acrylamide-based cross-linking agents, polyamide-based resins, various silane coupling agents, and various titanate-based coupling agents.
- a polyvalent metal salt can also be used as a curing agent.
- the content thereof is preferably 5 to 50 parts by mass and 10 to 30 parts by mass with respect to 100 parts by mass of the thermoplastic resin (B) dissolved in the solvent. Is more preferable. If the blending amount of the curing agent is less than 5 parts by mass, the curability tends to be insufficient, and if it exceeds 50 parts by mass, the coating film tends to be too hard.
- Examples of the polyvalent epoxy compound suitable as a curing agent used in the present invention include a novolak type polyvalent epoxy resin, a bisphenol type polyvalent epoxy resin, a trisphenol methane type polyvalent epoxy resin, an amino group-containing polyvalent epoxy resin, and copolymerization.
- Examples include mold polyvalent epoxy resins.
- An example of a novolak-type polyvalent epoxy resin is one obtained by reacting epichlorohydrin and / or methylepicrolhydrin with novolaks obtained by reacting phenols such as phenol, cresol, and alkylphenol with formaldehyde under an acidic catalyst. Can be mentioned.
- Examples of the bisphenol type polyvalent epoxy resin include those obtained by reacting bisphenols such as bisphenol A, bisphenol F, and bisphenol S with epichlorohydrin and / or methylepicrolhydrin, and diglycidyl ether of bisphenol A and the bisphenols. Examples thereof include those obtained by reacting a condensate with epichlorohydrin and / or methylepicrolhydrin. Examples of the trisphenol methane type polyvalent epoxy resin include those obtained by reacting trisphenol methane, triscresol methane and the like with epichlorohydrin and / or methyl epichlorohydrin.
- amino group-containing polyvalent epoxy resins include glycidyl amines such as tetraglycidyl diaminodiphenylmethane, triglycidyl paraaminophenol, tetraglycidyl bisaminomethylcyclohexanone, N, N, N', N'-tetraglycidyl-m-xylene diamine.
- glycidyl amines such as tetraglycidyl diaminodiphenylmethane, triglycidyl paraaminophenol, tetraglycidyl bisaminomethylcyclohexanone, N, N, N', N'-tetraglycidyl-m-xylene diamine.
- polyvalent epoxy resin of the system can be mentioned.
- Examples of the copolymerized polyvalent epoxy resin include a copolymer of glycidyl methacrylate and styrene, a copolymer of glycidyl methacrylate, styrene and methyl methacrylate, a copolymer of glycidyl methacrylate and cyclohexyl maleimide, and the like. Can be done.
- a curing catalyst can be used for the curing reaction of the multivalent epoxy compound used in the present invention.
- imidazole compounds such as 2-methylimidazole, 1,2-dimethylimidazole, 2-ethyl-4-methylimidazole, 2-phenyl-4-methylimidazole, 1-cyanoethyl-2-ethyl-4-methylimidazole, and triethylamine.
- Examples thereof include compounds converted to amine salts with salts and the like, cationic catalysts such as triarylsulfonium hexafluoroantimonate and diallyliodonium hexafluoroantimonate, and triphenylphosphine.
- cationic catalysts such as triarylsulfonium hexafluoroantimonate and diallyliodonium hexafluoroantimonate, and triphenylphosphine.
- 1,8-diazabicyclo (5,4,0) -7-undecene, 1,5-diazabicyclo (4,5,0) -5-nonene and 6-dibutylamino-1,8-diazabicyclo (5) , 4,0) -7-Undecene and other tertiary amines and compounds in which these tertiary amines are converted to amine salts with phenol, octyl acid, etc. or quaternized tetraphenylborate salt are thermosetting and heat resistant. It is preferable in terms of adhesion to metal and storage stability after compounding.
- Suitable phenolic resins as the curing agent used in the present invention include, for example, alkylated phenols and / or condensates of cresols and formaldehyde. Specifically, alkylated phenols alkylated with alkyl groups such as methyl group, ethyl group, propyl group, isopropyl group and butyl group, p-tert-amylphenol, 4,4'-sec-butylidenephenol, p.
- Suitable amino resins as the curing agent used in the present invention include, for example, formaldehyde adducts such as urea, melamine, and benzoguanamine, and alkyl ether compounds obtained by alkoxylating these compounds with an alcohol having 1 to 6 carbon atoms. be able to. Specific examples thereof include methoxylated methylol urea, methoxylated methylol-N, N-ethylene urea, methoxylated methylol dicyandiamide, methoxylated methylol melamine, methoxylated methylol benzoguanamine, butoxylated methylol melamine, butoxylated methylol benzoguanamine and the like. Preferably, it is methoxylated methylol melamine, butoxylated methylol melamine and methylolized benzoguanamine, which can be used alone or in combination, respectively.
- formaldehyde adducts
- the multivalent isocyanate compound suitable as the curing agent used in the present invention may be either a low molecular weight compound or a high molecular weight compound.
- the low molecular weight compound include aliphatic isocyanate compounds such as tetramethylene diisocyanate and hexamethylene diisocyanate, aromatic polyvalent isocyanate compounds such as toluene diisocyanate, diphenylmethane diisocyanate and xylylene diisocyanate, hydride diphenylmethane diisocyanate and hydride xylylene diisocyanate.
- Isophorone diisocyanate and other alicyclic polyvalent isocyanates are examples of the low molecular weight compound.
- the trimer of these polyvalent isocyanate compounds and the like can be mentioned.
- the polymer compound include a terminal isocyanate group-containing compound obtained by reacting a compound having a plurality of active hydrogens with an excess amount of the low molecular weight polyisocyanate compound.
- the compound having a plurality of active hydrogens include polyhydric alcohols such as ethylene glycol, propylene glycol, trimethylolpropane, glycerin and sorbitol, polyhydric amines such as ethylenediamine, and hydroxyl groups such as monoethanolamine, diethanolamine and triethanolamine.
- active hydrogen-containing polymers such as compounds having an amino group, polyester polyols, polyether polyols, and polyamides.
- the multivalent isocyanate compound may be a blocked isocyanate.
- the blocked isocyanate is obtained by appropriately adding and reacting the above-mentioned isocyanate compound and an isocyanate blocking agent by a conventionally known method.
- the isocyanate blocking agent include phenols such as phenol, thiophenol, methylthiophenol, cresol, xylenol, resorcinol, nitrophenol and chlorophenol, oximes such as acetoxime, methylethylketooxime and cyclohexanone oxime, methanol, ethanol and propanol.
- Alcohols such as butanol, ethylene chlorohydrin, halogen-substituted alcohols such as 1,3-dichloro-2-propanol, tertiary alcohols such as t-butanol and t-pentanol, ⁇ -caprolactam, ⁇ -valero
- lactams such as lactam, ⁇ -butyrolactam and ⁇ -propyl lactam
- other active methylene compounds such as aromatic amines, imides, acetylacetones, acetoacetate and ethyl malonic acid, mercaptans and imines.
- Ureas diaryl compounds, sodium bisulfite and the like.
- the polyvalent oxazoline compound suitable as a curing agent used in the present invention is a compound having an oxazoline group in the molecule, and a polymer containing an oxazoline group is particularly preferable, and an addition-polymerizable oxazoline group-containing monomer alone or another monomer is preferable. It can be produced by polymerization with.
- the addition polymerizable oxazoline group-containing monomer is 2-vinyl-2-oxazoline, 2-vinyl-4-methyl-2-oxazoline, 2-vinyl-5-methyl-2-oxazoline, 2-isopropenyl-2-oxazoline, Examples thereof include 2-isopropenyl-4-methyl-2-oxazoline and 2-isopropenyl-5-ethyl-2-oxazoline, and one or a mixture of two or more thereof can be used. Of these, 2-isopropenyl-2-oxazoline is industrially readily available and suitable.
- the other monomer is not limited as long as it is a monomer copolymerizable with the addition polymerizable oxazoline group-containing monomer, and is, for example, an alkyl (meth) acrylate (the alkyl group is a methyl group, an ethyl group, an n-propyl group, an isopropyl group, (Meta) acrylic acid esters such as n-butyl group, isobutyl group, t-butyl group, 2-ethylhexyl group, cyclohexyl group); acrylic acid, methacrylate, itaconic acid, maleic acid, fumaric acid, crotonic acid, styrene Unsaturated carboxylic acids such as sulfonic acid and salts thereof (sodium salt, potassium salt, ammonium salt, tertiary amine salt, etc.); unsaturated nitriles such as acrylonitrile and methacrylonitrile; (me
- Vinyl esters such as vinyl acetate and vinyl propionate
- Vinyl ethers such as methyl vinyl ether and ethyl vinyl ether
- ⁇ -olefins such as ethylene and propylene
- Vinyl chloride vinylidene chloride, etc.
- Halogen-containing ⁇ , ⁇ -unsaturated monomers such as vinyl fluoride
- ⁇ , ⁇ -unsaturated aromatic monomers such as styrene and ⁇ -methylstyrene, etc.
- Monomers can be used.
- the composition of the present invention may further contain a catalyst.
- a catalyst By containing a catalyst, the performance of the cured film can be improved.
- the curing agent is a phenol resin or an amino resin, for example, sulfuric acid, p-toluenesulfonic acid, dodecylbenzenesulfonic acid, naphthalenesulfonic acid, dinonylnaphthalenesulfonic acid, dinonylnaphthalenedisulfonic acid, cerebral sulfonic acid, phosphorus
- Dodecylbenzenesulfonic acid and its neutralized product are preferable from the viewpoint of compatibility with polyethylene isophthalate naphthalate and hygiene.
- the curing agent is an isocyanate compound
- examples of the catalyst include organotin compounds such as stannous octylate and dibutyltin dilaurylate, triethylamine, and the like, and one or more of these can be used. ..
- various additives may be contained in order to impart other functionality to the coating layer as long as the effects of the present invention are not impaired.
- the additive include known inorganic or organic particles such as titanium oxide, silica, and alumina, pigments, dyes, antistatic agents, leveling agents, fluorescent dyes, fluorescent whitening agents, plasticizers, dispersants, and ultraviolet rays. Absorbents, pigment dispersants, anti-settling agents, antifoaming agents, antifoaming agents, anti-skinning agents, anti-dripping agents, matting agents, thickeners, antifungal agents, preservatives, conductive agents, antifoaming agents, surfaces Examples thereof include smoothing agents, lubricants and flame retardant agents.
- resins other than polyethylene isophthalate naphthalate for example, polyester resins other than polyethylene isophthalate naphthalate, polyurethane resins, polyimide resins, polyamideimide resins, ethylene-polymerizable unsaturated carboxylic acid copolymers, and ethylene-polymerizable carboxylics.
- An acid copolymer ionomer or the like can be appropriately blended.
- the particles that can be contained in the composition of the present invention or the coating layer obtained by using the composition of the present invention include silica, kaolinite, talc, light calcium carbonate, heavy calcium carbonate, zeolite, alumina, and sulfuric acid.
- Inorganic particles such as barium, carbon black, zinc oxide, zinc sulfate, zinc carbonate, zirconium dioxide, titanium dioxide, satin white, aluminum silicate, silica soil, calcium silicate, aluminum hydroxide, hydrohaloicite, magnesium carbonate, magnesium hydroxide, etc.
- the composition of the present invention may contain a metal compound or the like as long as the effects of the present invention are not impaired.
- the metal constituting the metal compound is not particularly limited, and monovalent metals such as lithium, sodium, potassium, rubidium, and cesium, magnesium, calcium, zirconium, zinc, copper, cobalt, iron, nickel, aluminum, and the like are used. Examples include divalent or higher valent metals.
- the metal compound is a compound containing the above metal, and examples of the compound include oxides, hydroxides, halides, inorganic salts such as carbonates, hydrogen carbonates, phosphates and sulfates, and acetates.
- Examples thereof include carboxylic acid salts such as formate, stearate, citrate, malate and maleate, and organic acid salts such as sulfonate, and oxides and carbonates are preferable. Moreover, you may use the metal simple substance as a metal compound.
- the composition of the present invention can be suitably used as a coating material. Further, it is suitable for coating a film; glass; a metal can such as an aluminum can, a steel can, a tin can; a steel plate such as an ordinary steel plate, a plated steel plate, a lubricating steel plate; a metal such as a metal vapor deposition layer, or a primer layer on the metal. It is capable of forming a film.
- the amount of the composition applied is preferably 0.1 to 50 g / m 2 after drying of the composition. , More preferably 1 to 50 g / m 2 , still more preferably 3 to 20 g / m 2 , and particularly preferably 3 to 10 g / m 2 .
- the formation of a coating film from the composition of the present invention is preferably carried out by coating (also referred to as coating or coating) the composition of the present invention, evaporating the solvent by heating, and then melting the particles. it can. As a result, a uniform coating film is formed without pinholes.
- the heating temperature for coating the composition of the present invention is preferably 100 to 300 ° C, more preferably 150 to 290 ° C, still more preferably 200 to 280 ° C. If the temperature is lower than 100 ° C., a film having sufficient durability may not be formed due to insufficient evaporation of the solvent, insufficient softening / melting of the resin, and insufficient crystallization. If the temperature exceeds 300 ° C., deterioration of resin physical properties such as coloring of the resin may occur.
- the heating time is preferably 1 to 60 minutes, more preferably 1.5 to 30 minutes, and even more preferably 2 to 20 minutes. If it is less than 1 minute, a film having sufficient durability may not be formed due to insufficient evaporation of the solvent, insufficient softening / melting of the resin, and insufficient crystallization. If it exceeds 60 minutes, deterioration of resin physical properties such as coloring of the resin may occur.
- the average thickness of the coating film according to the present invention is preferably 35 ⁇ m or less, more preferably 20 ⁇ m or less, still more preferably 15 ⁇ m or less, from the viewpoint of keeping the finished product within a predetermined size.
- the lower limit of the average thickness is not particularly limited, but is usually 1 ⁇ m or more.
- the present invention is also a laminate characterized by being obtained by coating the composition of the present invention.
- the laminate of the present invention can be obtained by coating a base material such as a film or glass with the composition of the present invention.
- a spray coating method, a brush coating method, a spatula coating method, a method of applying using a roll coater, a spin coater, a bar coater, etc., a dip coating method, an electrodeposition coating method, an electrostatic coating method, etc. are appropriately used.
- the laminate of the present invention is a laminate of a substrate other than a metal substrate, such as a film or glass, and a coating film obtained by coating the composition of the present invention.
- the present invention is also a coated metal product, which is obtained by coating the composition of the present invention.
- the coated metal product of the present invention is, for example, a metal can such as an aluminum can, a steel can, a tin can; a steel plate such as an ordinary steel plate, a plated steel plate, a lubricating steel plate; It can be obtained by coating the composition of the present invention.
- a method such as a painting method can be appropriately used.
- the metal contained in the coated metal product of the present invention is not particularly limited, and is, for example, stainless steel, nickel-titanium alloy, titanium, titanium alloy, cobalt-chromium alloy, nickel-chromium alloy, gold alloy, platinum-added metal, gold and silver. Examples thereof include palladium alloys and silver alloys, and one or more of these can be used.
- coated metal product of the present invention examples include metal cans such as aluminum cans, steel cans and tin cans; steel plates such as ordinary steel plates, plated steel plates and lubricating steel plates; automobiles and home appliances having a metal vapor deposition layer.
- a primer layer may be further provided on the surface of the material.
- Acrylic resin, epoxy resin, polyethylene naphthalate resin, silicone resin and the like can be used as the composition for forming the primer layer.
- a compound having a lactone ring, a compound having an oxadrine ring, a silane coupling agent and the like may be further added.
- the coating film-coated portion of the laminate and the coated metal product of the present invention may be the entire product or only a part thereof.
- the present invention is also characterized in that the content of the constituent unit derived from isophthalic acid is more than 10 mol% and 90 mol% or less when the constituent unit derived from the total acid component is 100 mol%. It is also phthalate naphthalate.
- the content of the constituent unit derived from isophthalic acid is preferably, for example, 30 mol% or more and 70 mol% or less. Since the polyethylene isophthalate naphthalate of the present invention has fluidity, a solvent is used when forming a coating layer using a composition containing the polyethylene isophthalate naphthalate (particularly, a suspension coating material containing resin particles). Can be easily removed, and a coating layer can be suitably formed.
- the polyethylene isophthalate naphthalate of the present invention preferably has, for example, a glass transition temperature of 70 ° C. or higher and 130 ° C. or lower.
- FIG. 1 is a conceptual diagram showing a state when the composition of Examples described later is formed into a coating film.
- the polyethylene isophthalate naphthalate PIN-OH, PIN-COOH
- PEN fine particles polyethylene naphthalate particles
- processability, curability, retort resistance, heat resistance, and wear resistance can be sufficiently exhibited.
- PIN-OH means a polyethylene isophthalate naphthalate resin having a hydroxyl group at the end
- PIN-COOH means a polyethylene isophthalate naphthalate resin having a carboxyl group at the end.
- a polyethylene glycol isophthalate naphthalate (hereinafter referred to as PIN) resin sample was dissolved in tetrahydrofuran so that the resin concentration was about 0.5% by mass, and filtered through a polytetrafluoride ethylene membrane filter having a pore size of 0.5 ⁇ m.
- the number average molecular weight was measured by gel permeation chromatography (GPC) using a sample as a measurement sample, tetrahydrofuran as a mobile phase, and a differential refractometer as a detector. The flow velocity was 0.6 mL / min and the column temperature was 40 ° C.
- Two TSKgel Super HM-H manufactured by TOSOH and TSKgel Super H2000 manufactured by TOSOH were used as columns. Monodisperse polystyrene was used as the molecular weight standard.
- Tg Glass transition temperature
- DSC-200 differential scanning calorimeter
- thermoplastic resin (A) (polyethylene naphthalate resin) having a solid content of 15% and not dissolved in a solvent was obtained.
- Example 1 A 200 mL flask equipped with a thermometer, a stirrer, and a reflux condenser was charged with 80 g of the solvent N-methylpyrrolidone, and the PIN resin No. was synthesized while stirring at room temperature. After adding 120 g little by little and dispersing and stirring at 190 ° C. for 1 hour, the contents were taken out and cooled to prepare a PIN resin solution having a solid content of 20%. The obtained solution was blended with a thermoplastic resin (A) which was not dissolved in a solvent, a curing agent, and the like, and curability, processability, retort resistance, and abrasion resistance were evaluated. The results are shown in Table 2.
- Examples 2 to 6 A PIN resin solution was produced in the same manner as in Example 1 except that the raw materials to be charged and their ratios were changed as shown in Table 2. As in Example 1, the obtained solution was mixed with a thermoplastic resin (A) not dissolved in a solvent, a curing agent, and the like, and the curability, processability, retort resistance, and abrasion resistance were evaluated. .. The results are shown in Table 2. All of them showed high solubility, and the blended composition could preferably adjust the balance between crystallinity and amorphousness, and showed high curability, processability, retort resistance and abrasion resistance.
- thermoplastic resin (A) which is not dissolved in the solvent, a curing agent, and the like were blended, and the curability, processability, retort resistance, and abrasion resistance were evaluated. The results are shown in Table 2.
- test piece One side of a tin plate (JIS G 3303 (2008) SPTE, 70 mm x 150 mm x 0.3 mm) is coated with a composition for can paint with a bar coater so that the film thickness after drying is 10 ⁇ 2 ⁇ m, and baking conditions 200. Curing and baking was performed at ° C. (PMT: maximum temperature reached by the substrate) ⁇ 10 minutes, and this was used as a test piece (hereinafter referred to as a test piece).
- PMT maximum temperature reached by the substrate
- the obtained test piece was bent 180 ° in the direction in which the cured film was on the outside, and the cracking of the cured film generated at the bent portion was evaluated by measuring the energization value.
- the vicinity of the central portion of the bent portion of the test piece was brought into contact with the sponge so as to be parallel to the side of 20 mm.
- ⁇ The cured film peeled off at 51 to 99 times, and the tin plate was exposed.
- ⁇ The cured film peeled off at 21 to 50 times.
- the tin plate was exposed
- ⁇ The cured film was peeled off after 20 times or less, and the tin plate was exposed.
- the components listed in Table 2 are as follows.
- Polyether sulfone resin manufactured by BASF, E6010GP, solid content 20% Liquid crystal polyester: manufactured by Sumitomo Chemical Co., Ltd., VR500, solid content 20% PR-899: Allnex, resole-type phenolic resin Cymel (registered trademark) 1123: Allnex, methyl / ethylated benzoguanamine Epocross (registered trademark) RPS-1005: Oxazoline group-containing reactive polystyrene Nacure manufactured by Nippon Catalyst Co., Ltd. (Registered Trademark) 5076: Dodecylbenzene sulfonic acid manufactured by King Industries, Inc.
- PIN resin No. No. 5 contains a PIN resin No. 5 in 80 g of solvent N-methylpyrrolidone, as in the above-mentioned Examples. Even after adding 520 g little by little and stirring at 190 ° C. for 1 hour, a large amount of undispersed substance was present, and stirring was continued for another 1 hour, but the mixture could not be dissolved. It is presumed that the solvent solubility was low because the content of the isophthalic acid component was high and the content of the naphthalene dicarboxylic acid component was low.
- the composition containing the solvent, the particles of the thermoplastic resin (A) not dissolved in the solvent, and the thermoplastic resin (B) dissolved in the solvent is processable.
- Curability, retort resistance, heat resistance, and abrasion resistance were sufficiently satisfied.
- Comparative Example 1 in the composition using only the resin particles (A) which are not dissolved in the solvent as the resin, the solvent does not easily escape during curing, and the curability is poor. Further, when only the resin (B) dissolved in the solvent is used as the resin as in Comparative Example 2, the processability, retort resistance and abrasion resistance are inferior.
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Abstract
Description
なお、以下において記載する本発明の個々の好ましい形態を2つ以上組み合わせたものもまた、本発明の好ましい形態である。
本発明の組成物において、溶媒に溶解していない熱可塑性樹脂(A)、及び、溶媒に溶解している熱可塑性樹脂(B)として用いられる熱可塑性樹脂としては、例えば、ポリエチレンテレフタレート、ポリエチレンイソフタレート、ポリエチレンイソフタレートナフタレート(PIN)、ポリプロピレンテレフタレート、ポリブチレンテレフタレート、ポリエチレンナフタレート(PEN)、ポリブチレンナフタレート(PBN)、非晶ポリアリレート、液晶ポリエステル等の芳香族ポリエステル樹脂;ポリ乳酸、ポリグリコール酸、ポリエチレンアルカノエート、ポリブチレンアルカノエート、ポリヒドロキシアルカノエート、ポリカプロラクトン等の脂肪族ポリエステル樹脂;ナイロン6、ナイロン6,6、ナイロン12、MXD6ナイロン等のポリアミド樹脂;ポリカーボネート樹脂;ポリ塩化ビニル、ポリ塩化ビニリデン、ポリオレフィン、ポリスチレン、(メタ)アクリル樹脂、アクリロニトリル-ブタジエン-スチレン(ABS)樹脂、ポリウレタン樹脂、塩化ビニル-塩化ビニリデン-アクリロニトリル共重合体、アクリロニトリル-スチレン(AS)樹脂、酢酸ビニル樹脂、ポリフェニレンエーテル、ポリスルホン、ポリエーテルスルホン、ポリエーテルケトン(PEK)、ポリエーテルエーテルケトン(PEEK)、液晶プラスチック等があげられる。また、熱可塑性樹脂としては、再生PET樹脂等に代表される再生樹脂を用いることもでき、さらに結晶性、非結晶性のどちらであってもよい。ただし、これらに限定されるものではない。
本発明の組成物において、上記溶媒に溶解していない熱可塑性樹脂(A)の粒子は、ポリブチレンナフタレート及び/又はポリエチレンナフタレートを含むことが好ましい。
本明細書中、数平均粒子径は、溶媒に溶解していない熱可塑性樹脂(A)の粒子をメタノールで希釈したものを、スピンコーターを用いてPETフィルムに塗布し、乾燥して得られた塗膜を、走査型電子顕微鏡(SU1510、日立ハイテクノロジーズ社製)又は光学顕微鏡(VHX-2000、キーエンス社製)にて測定するものである。
上記熱可塑性樹脂(A)を溶解する際の溶媒の温度は、70~200℃であることが好ましい。熱可塑性樹脂(A)が、ポリエチレンナフタレート、ポリブチレンナフタレートである場合は、130~190℃であることがより好ましく、140~185℃であることがさらに好ましい。溶媒の温度が70℃未満であると、熱可塑性樹脂(A)が溶解し難い傾向にあり、200℃を超えると熱可塑性樹脂(A)あるいは溶媒の分解が起こり黄色に変色する傾向がある。
本発明の組成物において、上記溶媒に溶解している熱可塑性樹脂(B)は、ポリエチレンイソフタレートナフタレート、ポリエーテルスルホン、液晶ポリエステル、及び、ポリカーボネートからなる群より選択される少なくとも1種を含むことが好ましい。
上記数平均分子量の測定方法は、実施例で記載する通りである。
上記酸価及び水酸基価の測定方法は、実施例で記載する通りである。
例えば酸価を付与する方法としては、重合後期に分子内にカルボン酸無水物基を有する化合物を付加する解重合方法、プレポリマー(オリゴマー)の段階でこれを高酸価とし、次いでこれを重合し、酸価を有するポリエチレンイソフタレートナフタレートを得る方法等があるが、操作の容易さ、目標とする酸価を得やすいことから前者の解重合方法が好ましい。
上記ポリエーテルスルホンは、下記式(4-1)~(4-3)で表される構成単位(繰り返し単位)のいずれかを少なくとも一部にもつものであることが好ましく、当該構成単位から実質的に構成されるものであることがより好ましい。該ポリエーテルスルホンの末端基は、水酸基、カルボキシル基が好適なものとして挙げられるが、これらに限定されるものではない。
-[C6H4-SO2-C6H4-O]- (4-1)
-[C6H4-O-C6H4-SO2-C6H4-O]- (4-2)
-[C6H4-C6H4-O-C6H4-SO2-C6H4-O]- (4-3)
-[O-Ar1-CO]- (5-1)
-[O-Ar2-O]- (5-2)
-[O-R1-O]- (5-3)
-[NH-Ar3-O]- (6-1)
-[NH-Ar4-NH]- (6-2)
-[Ar5-C(CH3)2-Ar6-O-CO-O]- (7)
例えば、上記ポリエチレンイソフタレートナフタレートのガラス転移温度が70℃以上、130℃以下であることが好ましい。
上記ガラス転移温度の測定方法は、実施例で記載する通りである。
上記質量比は、2:1~15:1であることがより好ましく、5:1~10:1であることが更に好ましい。
本発明の組成物における溶媒としては、特に限定されないが、酢酸エチル、酢酸ブチル、炭酸プロピレン、4-ブチロラクトン等のエステル系溶媒、アジピン酸ジメチル、グルタル酸ジメチル、及び、コハク酸ジメチル等の二塩基酸エステル系溶媒、シクロヘキサノン、イソホロン、メチルイソブチルケトン等のケトン系溶媒、シクロヘキサン、トルエン、キシレン等の炭化水素系溶媒、ベンジルアルコール、シクロヘキサノール等のアルコール系溶媒、エチレングリコールモノブチルエーテル、ジプロピレングリコールブチルエーテル、2-(2-メトキシエトキシ)エタノール、ビス(2-メトキシエチル)エーテル等のエーテル系溶媒、ホルムアミド、ジメチルホルムアミド、ジメチルアセトアミド等のアミド系溶媒、N-メチル-2-ピロリドン等のピロリドン系溶媒、及び、水、並びに、これらの混合物等があげられるが、これらに限定されるものではない。なかでもエステル系溶媒、エーテル系溶媒、ピロリドン系溶媒が好ましく、ピロリドン系溶媒がより好ましく、N-メチル-2-ピロリドンが更に好ましい。
硬化剤は、上述した熱可塑性樹脂のいずれかと反応し架橋構造を形成するものが好ましく、例えば、フェノール樹脂、オキサゾリン樹脂、多価エポキシ化合物等のエポキシ化合物、尿素系、メラミン系、ベンゾグアナミン系等のアミノ樹脂、イソシアネート化合物、カルボジイミド系架橋剤、アジリジン系架橋剤、アクリルアミド系架橋剤、ポリアミド系樹脂、各種シランカップリング剤、各種チタネート系カップリング剤等を挙げることができる。また多価金属塩も硬化剤として使用することができる。
上記平均厚みは、その下限値は特に限定されないが、通常は1μm以上である。
本発明は、本発明の組成物をコーティングして得られることを特徴とする積層体でもある。
本発明の積層体は、例えば、フィルム、ガラス等の基材に対して本発明の組成物をコーティングして得ることができる。コーティングには、スプレーコート法、ハケ塗り法、ヘラ塗り法、ロールコーター、スピンコーター、バーコーター等を用いて塗布する方法、浸漬塗装法、電着塗装法、静電塗装法等の方法を適宜用いることができる。
本発明の積層体は、例えば、フィルム、ガラス等の、金属基材以外の基材と、本発明の組成物をコーティングして得られる被膜とが積層したものである。
本発明は、本発明の組成物をコーティングして得られることを特徴とする被覆金属製品でもある。
本発明の被覆金属製品は、例えば、アルミ缶、スチール缶、ブリキ缶等の金属缶;普通鋼板、めっき鋼板、潤滑鋼板等の鋼板;金属蒸着層等の金属又は金属上のプライマー層に対して本発明の組成物をコーティングして得ることができる。コーティングには、上述したのと同様に、スプレーコート法、ハケ塗り法、ヘラ塗り法、ロールコーター、スピンコーター、バーコーター等を用いて塗布する方法、浸漬塗装法、電着塗装法、静電塗装法等の方法を適宜用いることができる。
本発明はまた、イソフタル酸由来の構成単位の含有量が、全酸成分由来の構成単位を100モル%としたとき、10モル%を超え、90モル%以下であることを特徴とするポリエチレンイソフタレートナフタレートでもある。該イソフタル酸由来の構成単位の含有量は、例えば30モル%以上、70モル%以下であることが好ましい。
本発明のポリエチレンイソフタレートナフタレートは、流動性があるため、当該ポリエチレンイソフタレートナフタレートを含む組成物(特に、樹脂の粒子を含む懸濁塗料)を用いてコーティング層を形成する際に、溶剤が抜けやすくなり、コーティング層を好適に形成することができる。
本発明のポリエチレンイソフタレートナフタレートは、例えば、ガラス転移温度が70℃以上、130℃以下であることが好ましい。
ポリエチレングリコールイソフタレートナフタレート(以下、PINという)樹脂試料を、樹脂濃度が0.5質量%程度となるようにテトラヒドロフランに溶解し、孔径0.5μmのポリ四フッ化エチレン製メンブレンフィルターで濾過したものを測定用試料として、テトラヒドロフランを移動相とし、示差屈折計を検出器とするゲル浸透クロマトグラフィー(GPC)により数平均分子量を測定した。流速は0.6mL/分、カラム温度は40℃とした。カラムにはTOSOH社製 TSKgel SuperHM-H 2本、TSKgel SuperH2000を用いた。分子量標準には単分散ポリスチレンを使用した。
樹脂固形分重量約0.2g分を採取し、20mlのクロロホルムに溶解させた。次いでフェノールフタレインを反応指示薬として、0.1N-KOHのエタノール溶液を用いて滴定した。溶液が赤色に着色した点を中和点とし、樹脂106g(1t)あたりの当量(eq/t)に換算して表示した。
PIN樹脂試料0.5gを10mlの0.5Nの無水酢酸のピリジン溶液に溶解後、純水10mLを添加し、フェノールフタレインを指示薬存在下、0.2Nの水酸化ナトリウムの水:メタノール=1:19混合溶液で滴定し、溶液が赤色に着色した点を中和点とし、PIN樹脂106g(1t)あたりの当量(eq/t)に換算して表示した。
示差走査型熱量計(SII社製、DSC-200)により測定した。PIN樹脂試料5mgをアルミニウム製の抑え蓋型容器に入れて密封し、液体窒素を用いて-50℃まで冷却し、次いで150℃まで20℃/分にて昇温させた。この過程にて得られる吸熱曲線において、吸熱ピークが出る前のベースラインと、吸熱ピークに向かう接線との交点の温度をもって、ガラス転移温度(Tg、単位:℃)とした。
PIN樹脂試料を、重クロロホルムまたは重ジメチルスルホキシドに溶解し、VARIAN社製 NMR装置400-NMRを用いて、1H-NMR分析を行った。その積分比より、モル比を求めた。また、ポリエチレンナフタレート、ポリエーテルスルホン、及び、液晶ポリエステルも同様に重クロロホルムまたは重ジメチルスルホキシドに溶解し、適宜トリフルオロ酢酸(TFA)を添加して、その組成を測定した。
PIN樹脂No.1の製造
温度計、撹拌機、リービッヒ冷却管を具備した500mlガラスフラスコにイソフタル酸50部、ナフタレンジカルボン酸161部、テレフタル酸85部、エチレングリコール205部を仕込み、窒素雰囲気2気圧加圧下、160℃から230℃まで3時間かけてエステル化反応を行った。放圧後テトラブチルチタネート0.01部を仕込み、次いで系内を徐々に減圧していき、30分かけて5mmHgまで減圧し、さらに0.3mmHg以下の真空下、260℃にて40分間重縮合反応を行った。その後、無水トリメリット酸5.8部を仕込み、210℃で2時間撹拌した後、内容物を取り出し冷却した。得られたPIN樹脂No.1の組成、数平均分子量等の特性を表1に示した。
PIN樹脂No.2~No.5の製造
表1に示すように仕込み原料およびその比率を変更した以外はPIN樹脂No.1と同様にして、PIN樹脂No.2~No.5を合成し、PIN樹脂No.1と同様の評価を行った。評価結果を表1に示した。
温度計、撹拌機、還流冷却器を取り付けた2Lフラスコに溶剤N-メチルピロリドン935gを仕込んだ。室温にて撹拌しながらポリエチレンナフタレート樹脂(帝人社製TN8065S)165gを少しづつ添加し分散後、液温を190℃まで上昇させて溶解させた。これを徐冷すると、数平均粒子径2~3μmの樹脂粒子が析出した。固形分15%の、溶媒に溶解していない熱可塑性樹脂(A)(ポリエチレンナフタレート樹脂)を得た。
温度計、撹拌機、還流冷却器を取り付けた200mLフラスコに溶剤N-メチルピロリドン80gを仕込み、室温にて撹拌しながら合成したPIN樹脂No.1 20gを少しずつ添加し分散させ、190℃で1時間撹拌した後、内容物を取り出し冷却し、固形分20%のPIN樹脂溶液を製造した。得られた溶液を、溶媒に溶解していない熱可塑性樹脂(A)、および硬化剤等と配合し、硬化性、加工性、耐レトルト性及び耐摩耗性を評価した。結果を表2に示す。
表2に示すように仕込み原料及びその比率を変更した以外は実施例1と同様にして、PIN樹脂溶液を製造した。得られた溶液は、実施例1と同様に、溶媒に溶解していない熱可塑性樹脂(A)、および硬化剤等を配合し、硬化性、加工性、耐レトルト性及び耐摩耗性を評価した。結果を表2に示す。いずれも高い溶解性を示し、また配合組成物は結晶性と非晶性のバランスを好適に調整することができ、高い硬化性、加工性、耐レトルト性および耐摩耗性を示した。
表2に示すように仕込み原料及びその比率を変更した以外は実施例1と同様にして、PIN樹脂溶液の製造を試み、PIN樹脂溶液が得られたものについてはさらに、実施例1と同様に、溶媒に溶解していない熱可塑性樹脂(A)、および硬化剤等を配合し、硬化性、加工性、耐レトルト性及び耐摩耗性を評価した。結果を表2に示す。
<試験片の作製>
ブリキ板(JIS G 3303(2008) SPTE、70mm×150mm×0.3mm)の片面にバーコーターで缶塗料用組成物を乾燥後の膜厚が10±2μmになるように塗装し、焼付条件200℃(PMT:基材到達最高温度)×10分間として硬化焼き付けを行い、これを試験片とした(以下、試験片という)。
試験片の硬化膜面に、メチルエチルケトンを浸したガーゼフェルトを1cm2接触するように押し当て、500gの荷重をかけてラビング試験を行った。硬化膜が剥がれるまでの回数(1往復で1回とする)を、以下の基準で評価した。
(判定)
◎:50回以上でも塗膜が剥がれず、硬化膜に変化がみられなかった
○:25~49回で硬化膜が剥がれ、ブリキ板が露出した
△:16~24回で硬化膜が剥がれ、ブリキ板が露出した
×:15回以下で硬化膜が剥がれ、ブリキ板が露出した
得られた試験片を、硬化膜が外側となる方向に180°折り曲げ加工を施し、折り曲げ部に発生する硬化膜の割れについて、通電値を測定することにより評価した。アルミ板製の電極(幅20mm、奥行き50mm、厚さ0.5mm)の上に1%NaCl水溶液に浸したスポンジ(幅20mm、奥行き50mm、厚さ10mm)を載せたものを用意し、スポンジの20mmの辺と平行になるように試験片の折り曲げ部の中央部付近をスポンジに接触させた。アルミ板電極と試験板の裏面の非塗装部との間に5.0Vの直流電圧をかけ、通電値を測定した。通電値が小さい方が折り曲げ特性が良好であることを意味する。
(判定)
◎:0.5mA未満
○:0.5mA以上1.0mA未満
△:1.0mA以上2.0mA未満
×:2.0mA以上
試験片を立ててステンレスカップに入れ、これにイオン交換水を試験片の半分の高さになるまで注ぎ、これをレトルト試験機(トミー工業(株)製 ES-315)の圧力釜の中に設置し、130℃×60分のレトルト処理を行なった。処理後の評価は一般的に硬化膜に対してより厳しい条件にさらされることになると思われる蒸気接触部分で行い、硬化膜の白化、ブリスターの状態を目視で以下のように判定した。
(判定)
◎:良好(白化、ブリスターともになし)
○:わずかに白化はあるがブリスターはない
△:若干の白化および/または若干のブリスターがある
×:著しい白化および/または著しいブリスターがある
スチールウール摩耗試験を実施した。5×13cmの試験片を作成し、ラビングテスター:I型(太平理化工業(株)製)のヘッドに、スチールウール(#0000)を取り付け、0.98N/cm2の荷重をかけて規定回数(5、10、20、50、100回)ラビング(摺動距離50mm、往復速度40往復/分)、金属基材が露出するまでのラビング回数を目視で判定した。
◎:100回以上でも塗膜が剥がれず、硬化膜に変化がみられなかった
○:51~99回で硬化膜が剥がれ、ブリキ板が露出した
△:21~50回で硬化膜が剥がれ、ブリキ板が露出した
×:20回以下で硬化膜が剥がれ、ブリキ板が露出した
ポリエーテルスルホン樹脂:BASF社製、E6010GP、固形分20%
液晶ポリエステル:住友化学株式会社製、VR500、固形分20%
PR-899:Allnex社製、レゾール型フェノール樹脂
Cymel(登録商標)1123:Allnex社製、メチル/エチル化ベンゾグアナミン
エポクロス(登録商標)RPS-1005:日本触媒社製、オキサゾリン基含有反応性ポリスチレン
Nacure(登録商標)5076:King Industries社製、ドデシルベンゼンスルホン酸
PIN樹脂No.5は、上述した実施例と同様に、溶剤N-メチルピロリドン80gにPIN樹脂No.5 20gを少しずつ添加して190℃で1時間撹拌した後も未分散物が大量に存在し、さらに1時間撹拌を続けたが溶解できなかった。イソフタル酸成分の含有量が多く、また、ナフタレンジカルボン酸成分の含有量が少ないことから、溶剤溶解性が低かったためと推定される。
一方、比較例1のように、樹脂として溶媒に溶解していない樹脂粒子(A)のみを用いた組成物では、硬化時の溶媒が抜けにくく、硬化性が悪い。また、比較例2のように、樹脂として溶媒に溶解している樹脂(B)のみを用いた場合は、加工性、耐レトルト性や耐摩耗性に劣るものとなる。
Claims (8)
- 溶媒、該溶媒に溶解していない熱可塑性樹脂(A)の粒子、及び、該溶媒に溶解している熱可塑性樹脂(B)を含むことを特徴とする組成物。
- 前記溶媒に溶解していない熱可塑性樹脂(A)の粒子は、ポリブチレンナフタレート及び/又はポリエチレンナフタレートを含むことを特徴とする請求項1に記載の組成物。
- 前記溶媒に溶解している熱可塑性樹脂(B)は、ポリエチレンイソフタレートナフタレート、ポリエーテルスルホン、液晶ポリエステル、及び、ポリカーボネートからなる群より選択される少なくとも1種を含むことを特徴とする請求項1又は2に記載の組成物。
- 前記溶媒に溶解していない熱可塑性樹脂(A)の粒子と、前記溶媒に溶解している熱可塑性樹脂(B)の質量比は、1:1~20:1であることを特徴とする請求項1~3のいずれかに記載の組成物。
- 請求項1~4のいずれかに記載の組成物をコーティングして得られることを特徴とする積層体。
- 請求項1~4のいずれかに記載の組成物をコーティングして得られることを特徴とする被覆金属製品。
- イソフタル酸由来の構成単位の含有量が、全酸成分由来の構成単位を100モル%としたとき、10モル%を超え、90モル%以下であることを特徴とするポリエチレンイソフタレートナフタレート。
- ガラス転移温度が70℃以上、130℃以下であることを特徴とする請求項7に記載のポリエチレンイソフタレートナフタレート。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US17/599,122 US20220169782A1 (en) | 2019-03-29 | 2019-10-25 | Composition, layered body, and covered metal product |
| EP19923071.5A EP3950339A4 (en) | 2019-03-29 | 2019-10-25 | COMPOSITION, LAMINATED BODY, AND COVERED METAL PRODUCT |
| CN201980094937.0A CN113677529A (zh) | 2019-03-29 | 2019-10-25 | 组合物、层叠体以及包覆型金属制品 |
| KR1020217033188A KR20210148185A (ko) | 2019-03-29 | 2019-10-25 | 조성물, 적층체 및 피복 금속 제품 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019068737A JP7329949B2 (ja) | 2019-03-29 | 2019-03-29 | 組成物、積層体及び被覆金属製品 |
| JP2019-068737 | 2019-03-29 |
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| WO2020202615A1 true WO2020202615A1 (ja) | 2020-10-08 |
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| PCT/JP2019/041826 Ceased WO2020202615A1 (ja) | 2019-03-29 | 2019-10-25 | 組成物、積層体及び被覆金属製品 |
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| Country | Link |
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| US (1) | US20220169782A1 (ja) |
| EP (1) | EP3950339A4 (ja) |
| JP (1) | JP7329949B2 (ja) |
| KR (1) | KR20210148185A (ja) |
| CN (1) | CN113677529A (ja) |
| WO (1) | WO2020202615A1 (ja) |
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| KR20230142751A (ko) * | 2021-02-05 | 2023-10-11 | 도요보 엠씨 가부시키가이샤 | 폴리에스테르 수지 조성물, 수분산체, 도료 조성물 및 도막 |
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| JPH058283A (ja) * | 1991-06-28 | 1993-01-19 | Toyobo Co Ltd | ポリエステルダイレクトブロー中空成形品 |
| JP2000043142A (ja) * | 1998-07-28 | 2000-02-15 | Teijin Ltd | 防眩フィルム用ベースフィルム |
| JP2001234115A (ja) * | 2000-02-24 | 2001-08-28 | Dainippon Ink & Chem Inc | 缶被覆用樹脂組成物及びその製造方法 |
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| US5039780A (en) * | 1988-11-08 | 1991-08-13 | Mitsui Petrochemical Industries, Ltd. | Copolyester having gas-barrier property |
| JP2001311041A (ja) * | 2000-04-28 | 2001-11-09 | Toyobo Co Ltd | 缶用塗料樹脂組成物及びこれを塗布した缶用塗装金属板 |
| US6589649B2 (en) * | 2000-08-23 | 2003-07-08 | Teijin Limited | Biaxially oriented polyester film, adhesive film and colored hard coating film |
| EP1659159B1 (en) | 2003-08-25 | 2015-11-11 | Sakuranomiya Chemical Co., Ltd. | Coating material for metal and metallic container coated with the coating material |
| WO2010074135A1 (ja) * | 2008-12-26 | 2010-07-01 | 東洋紡績株式会社 | 接着剤用樹脂組成物、これを含有する接着剤、接着シート及びこれを接着層として含むプリント配線板 |
| US9920217B2 (en) * | 2009-08-11 | 2018-03-20 | Swimc, Llc | Polymer particles and coating compositions formulated from the polymer particles |
| JP2012210378A (ja) | 2011-03-31 | 2012-11-01 | Sakuranomiya Kagaku Kk | 塗料被覆歯科用金属製品 |
| JP5739265B2 (ja) | 2011-08-01 | 2015-06-24 | 桜宮化学株式会社 | 金属製缶被覆用塗料およびその塗料を塗布した金属製缶 |
| TWI750132B (zh) * | 2015-08-20 | 2021-12-21 | 日商Agc股份有限公司 | 積層基材及其成形體之製造方法 |
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2019
- 2019-03-29 JP JP2019068737A patent/JP7329949B2/ja active Active
- 2019-10-25 WO PCT/JP2019/041826 patent/WO2020202615A1/ja not_active Ceased
- 2019-10-25 CN CN201980094937.0A patent/CN113677529A/zh active Pending
- 2019-10-25 EP EP19923071.5A patent/EP3950339A4/en not_active Withdrawn
- 2019-10-25 KR KR1020217033188A patent/KR20210148185A/ko not_active Ceased
- 2019-10-25 US US17/599,122 patent/US20220169782A1/en not_active Abandoned
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH058283A (ja) * | 1991-06-28 | 1993-01-19 | Toyobo Co Ltd | ポリエステルダイレクトブロー中空成形品 |
| JP2000043142A (ja) * | 1998-07-28 | 2000-02-15 | Teijin Ltd | 防眩フィルム用ベースフィルム |
| JP2001234115A (ja) * | 2000-02-24 | 2001-08-28 | Dainippon Ink & Chem Inc | 缶被覆用樹脂組成物及びその製造方法 |
| JP2005350508A (ja) | 2004-06-08 | 2005-12-22 | Nippon Ester Co Ltd | 缶塗料用樹脂 |
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Also Published As
| Publication number | Publication date |
|---|---|
| KR20210148185A (ko) | 2021-12-07 |
| US20220169782A1 (en) | 2022-06-02 |
| JP7329949B2 (ja) | 2023-08-21 |
| CN113677529A (zh) | 2021-11-19 |
| EP3950339A4 (en) | 2022-12-21 |
| EP3950339A1 (en) | 2022-02-09 |
| JP2020164735A (ja) | 2020-10-08 |
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