WO2016031729A1 - 硬化性組成物、硬化性組成物の製造方法、硬化物、硬化性組成物の使用方法、及び光デバイス - Google Patents
硬化性組成物、硬化性組成物の製造方法、硬化物、硬化性組成物の使用方法、及び光デバイス Download PDFInfo
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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
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
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- C08K3/36—Silica
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5435—Silicon-containing compounds containing oxygen containing oxygen in a ring
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- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/544—Silicon-containing compounds containing nitrogen
- C08K5/5477—Silicon-containing compounds containing nitrogen containing nitrogen in a heterocyclic ring
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- C08K5/548—Silicon-containing compounds containing sulfur
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
- C08L83/04—Polysiloxanes
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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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
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- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
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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
- C09K3/1006—Materials in mouldable or extrudable form for sealing or packing joints or covers characterised by the chemical nature of one of its constituents
- C09K3/1018—Macromolecular compounds having one or more carbon-to-silicon linkages
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
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- H01—ELECTRIC ELEMENTS
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- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/31—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the arrangement or shape
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F77/00—Constructional details of devices covered by this subclass
- H10F77/50—Encapsulations or containers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/852—Encapsulations
- H10H20/854—Encapsulations characterised by their material, e.g. epoxy or silicone resins
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/16—Polysiloxanes containing silicon bound to oxygen-containing groups to hydroxyl groups
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- C—CHEMISTRY; METALLURGY
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
- C08G77/04—Polysiloxanes
- C08G77/14—Polysiloxanes containing silicon bound to oxygen-containing groups
- C08G77/18—Polysiloxanes containing silicon bound to oxygen-containing groups to alkoxy or aryloxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- C08K2201/00—Specific properties of additives
- C08K2201/002—Physical properties
- C08K2201/005—Additives being defined by their particle size in general
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/02218—Material of the housings; Filling of the housings
- H01S5/02234—Resin-filled housings; the housings being made of resin
Definitions
- the present invention provides a cured product having excellent adhesion, peel resistance, and heat resistance, and excellent workability in the coating process, a method for producing the same, and curing by curing the curable composition.
- Product a method of using the curable composition as an adhesive for an optical element fixing material or an encapsulant for an optical element fixing material, and an optical device.
- the curable composition has been variously improved according to the application, and has been widely used in industry as a raw material for optical parts and molded articles, an adhesive, a coating agent, and the like.
- the curable composition has attracted attention as a composition for optical element fixing materials such as an optical element adhesive and an optical element sealing material when producing an optical element sealing body.
- the optical element examples include various lasers such as a semiconductor laser (LD), light emitting elements such as a light emitting diode (LED), a light receiving element, a composite optical element, and an optical integrated circuit.
- LD semiconductor laser
- LED light emitting diode
- a composite optical element a composite optical element
- optical integrated circuit an optical integrated circuit
- the cured product of the composition for optical element fixing materials is exposed to higher energy light or higher temperature heat generated from the optical element for a long time, and deteriorates and peels off. Or a problem that the adhesive strength is reduced.
- Patent Documents 1 to 3 an optical element fixing material composition containing a polysilsesquioxane compound as a main component is disclosed in Patent Document 4, and a hydrolyzate / polycondensate of a silane compound is disclosed in Patent Document 4.
- Patent Document 4 A member for a semiconductor light emitting device to be used has been proposed.
- the cured products such as the compositions and members described in Patent Documents 1 to 4 sometimes have difficulty in obtaining peeling resistance and heat resistance while maintaining sufficient adhesive force.
- a coating apparatus having a discharge pipe (needle) as described in Patent Document 5 is usually used.
- the discharge pipe descends vertically to approach the object to be coated, and after discharging a predetermined amount of the curable composition from the tip, the discharge pipe rises. While being away from the object to be coated, the object to be coated moves sideways. And by repeating this operation, a curable composition can be apply
- JP 2004-359933 A JP 2005-263869 A JP 2006-328231 A JP 2007-1212975 A (US2009008673A1) JP 2002-009232 A
- the present invention has been made in view of the above-described prior art, and provides a cured product having excellent adhesion, peel resistance, and heat resistance, and a curable composition having excellent workability in the coating process.
- a production method thereof, a cured product obtained by curing the curable composition, a method of using the curable composition as an adhesive for an optical element fixing material or an encapsulant for an optical element fixing material, and an optical device are provided.
- a cured product obtained by curing the curable composition a method of using the curable composition as an adhesive for an optical element fixing material or an encapsulant for an optical element fixing material, and an optical device are provided.
- the present inventors have intensively studied to solve the above problems. As a result, it contains a specific curable polysilsesquioxane compound, fine particles having a specific average primary particle size, and a specific silane coupling agent, and the content ratio of the curable polysilsesquioxane compound and the fine particles. Has been found to provide a cured product excellent in adhesiveness, peel resistance, and heat resistance and excellent workability in the coating process, and has led to the completion of the present invention. .
- curable compositions [1] to [8], a method for producing a curable composition [9], a cured product [10], [11], [12], [13 The method of using the curable composition of], and the optical device of [14] are provided.
- a curable composition containing the following components (A) to (C), wherein the component (A) and the component (B) are mixed in a mass ratio of the component (A) and the component (B): (A) component: (B) component] 100: 0.3 to 100: 50
- the curable composition characterized by containing.
- R 1 represents an alkyl group having 1 to 10 carbon atoms having a substituent or not having a substituent, or an aryl group having or not having a substituent.
- Mw mass average molecular weight
- the curable polysilsesquioxane compound of the component (A) has the following formula (a-2)
- the curable composition as described in [1].
- the curable composition according to [1] further comprising a diluent.
- the total amount of the component (A), the component (B) and the component (C) is 50 to 100% by mass with respect to the total components excluding the diluent of the curable composition.
- the curable composition according to [6] wherein the solid content concentration of the curable composition is 50% by mass or more and 100% by mass.
- cured material excellent in adhesiveness, peeling resistance, and heat resistance can be given, and the curable composition excellent in workability
- the curable composition of the present invention can be suitably used as an adhesive for optical element fixing materials and a sealing material for optical element fixing materials.
- the cured product of the present invention has excellent heat resistance and high adhesive strength.
- R 1 represents an alkyl group having 1 to 10 carbon atoms having a substituent or not having a substituent, or an aryl group having or not having a substituent.
- Component (A) constituting the curable composition of the present invention is a curable polysilsesquioxane compound having a repeating unit represented by the formula (a-1) (hereinafter referred to as “silane compound polymer”). (A) ").
- R 1 is a C 1-10 alkyl group having a substituent or not having a substituent, or an aryl group having a substituent or having no substituent. Represents.
- Examples of the alkyl group having 1 to 10 carbon atoms of R 1 include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, s-butyl group, t-butyl group, and n-pentyl. Group, n-hexyl group, n-octyl group, n-nonyl group and the like. Among these, an alkyl group having 1 to 6 carbon atoms is preferable, and an alkyl group having 1 to 3 carbon atoms is more preferable.
- Examples of the substituent of the alkyl group having 1 to 10 carbon atoms having a substituent of R 1 include a halogen atom such as a fluorine atom, a chlorine atom, a bromine atom and an iodine atom; a cyano group; or a group represented by the formula: OG ; G represents a hydroxyl-protecting group.
- a halogen atom such as a fluorine atom, a chlorine atom, a bromine atom and an iodine atom
- a cyano group or a group represented by the formula: OG ;
- G represents a hydroxyl-protecting group.
- acyl protecting groups for example, acyl protecting groups; silyl protecting groups such as trimethylsilyl group, triethylsilyl group, t-butyldimethylsilyl group, t-butyldiphenylsilyl group; methoxymethyl group, methoxyethoxymethyl group, 1-ethoxyethyl group
- An acetal type protective group such as tetrahydropyran-2-yl group or tetrahydrofuran-2-yl group
- an alkoxycarbonyl type protective group such as t-butoxycarbonyl group
- ether-based protecting groups such as allyl group, triphenylmethyl group, benzyl group, p-methoxybenzyl group, fluorenyl group, trityl group, and benzhydryl group.
- G an acyl-type protecting group is preferable
- the acyl-based protecting group is specifically a group represented by the formula: —C ( ⁇ O) R.
- R is a group having 1 to 6 carbon atoms such as methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, s-butyl group, t-butyl group, and n-pentyl group.
- Examples of the substituent of the phenyl group having a substituent represented by R include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, s-butyl group, isobutyl group, t-butyl group, n -Alkyl groups such as pentyl group, n-hexyl group, n-heptyl group, n-octyl group and isooctyl group; halogen atoms such as fluorine atom, chlorine atom and bromine atom; alkoxy groups such as methoxy group and ethoxy group; Can be mentioned.
- Examples of the aryl group for R 1 include a phenyl group, a 1-naphthyl group, and a 2-naphthyl group.
- Examples of the substituent of the aryl group having a substituent of R 1 include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, s-butyl group, isobutyl group, t-butyl group, n- Alkyl groups such as a pentyl group, n-hexyl group, n-heptyl group, n-octyl group and isooctyl group; halogen atoms such as fluorine atom, chlorine atom and bromine atom; alkoxy groups such as methoxy group and ethoxy group; It is done.
- R 1 is an alkyl having 1 to 10 carbon atoms having a substituent or not having a substituent because it is easy to obtain a curable composition that gives a cured product superior in heat resistance and adhesiveness.
- Group is preferable, an alkyl group having 1 to 6 carbon atoms is more preferable, and an alkyl group having 1 to 3 carbon atoms is more preferable.
- the repeating unit represented by the formula (a-1) is generally generically referred to as a T site, wherein three oxygen atoms are bonded to a silicon atom, and one other group (R 1 ) is bonded.
- a structure is generally referred to as a T site, wherein three oxygen atoms are bonded to a silicon atom, and one other group (R 1 ) is bonded.
- R 1 is bonded to a silicon atom
- Specific examples of the structure of the T site include those represented by the following formulas (a-3) to (a-5).
- R 1 represents the same meaning as described above.
- R 3 represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms. Examples of the alkyl group having 1 to 10 carbon atoms of R 3 include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, s-butyl group, isobutyl group and t-butyl group.
- the plurality of R 3 may be all the same or different.
- an Si atom is bonded to *.
- the silane compound polymer (A) is a ketone solvent such as acetone; an aromatic hydrocarbon solvent such as benzene; a sulfur-containing solvent such as dimethyl sulfoxide; an ether solvent such as tetrahydrofuran; an ester solvent such as ethyl acetate; It is soluble in various organic solvents such as a halogen-containing solvent such as chloroform; and a mixed solvent composed of two or more of these; therefore, using these solvents, the silane compound polymer (A) in a solution state 29 Si-NMR can be measured.
- a ketone solvent such as acetone
- aromatic hydrocarbon solvent such as benzene
- a sulfur-containing solvent such as dimethyl sulfoxide
- an ether solvent such as tetrahydrofuran
- an ester solvent such as ethyl acetate
- It is soluble in various organic solvents such as a halogen-containing solvent such as chloroform; and a mixed solvent
- the peak (T1) derived from the silicon atom in the structure represented by the formula (a-5) is observed in the region of ⁇ 53 ppm or more and less than ⁇ 45 ppm.
- the silane compound polymer (A) preferably has an integral value of T3 of 60 to 90% with respect to the total value of the integral values of T1, T2, and T3.
- the content of the repeating unit represented by the formula (a-1) in the silane compound polymer (A) is preferably 40% by mass or more, more preferably 70% by mass or more, based on all repeating units. More preferably, it is more preferably 100% by mass or more.
- the content ratio of the repeating unit represented by the formula (a-1) in the silane compound polymer (A) can be determined, for example, by measuring 29 Si-NMR of the silane compound polymer (A). .
- the silane compound polymer (A) may be one having one type of R 1 (homopolymer) or may be one having two or more types of R 1 (copolymer).
- the silane compound polymer (A) is a copolymer
- the silane compound polymer (A) is any copolymer such as a random copolymer, a block copolymer, a graft copolymer, and an alternating copolymer.
- a random copolymer is preferable from the viewpoint of ease of production and the like.
- the structure of the silane compound polymer (A) may be any of a ladder structure, a double decker structure, a cage structure, a partially cleaved cage structure, a cyclic structure, and a random structure.
- the mass average molecular weight (Mw) of the silane compound polymer (A) is usually in the range of 800 to 30,000, preferably 1,000 to 20,000, more preferably 1,200 to 10,000.
- the molecular weight distribution (Mw / Mn) of the silane compound polymer (A) is not particularly limited, but is usually in the range of 1.0 to 10.0, preferably 1.1 to 6.0.
- Mw / Mn molecular weight distribution
- the mass average molecular weight (Mw) and the number average molecular weight (Mn) can be determined, for example, as standard polystyrene conversion values by gel permeation chromatography (GPC) using tetrahydrofuran (THF) as a solvent.
- the silane compound polymer (A) can be used singly or in combination of two or more.
- the method for producing the silane compound polymer (A) is not particularly limited.
- the following formula (a-2) is not particularly limited.
- the following formula (a-2) is not particularly limited.
- the following formula (a-2) is not particularly limited.
- a silane compound polymer (A) can be produced by polycondensation of at least one of the silane compounds (1) represented by formula (1).
- the alkyl group having 1 to 10 carbon atoms of R 2 include the same as those shown as the alkyl group having 1 to 10 carbon atoms of R 3 .
- the halogen atom for X 1 include a chlorine atom and a bromine atom.
- silane compound (1) examples include methyltrimethoxysilane, methyltriethoxysilane, ethyltrimethoxysilane, ethyltriethoxysilane, ethyltripropoxysilane, n-propyltrimethoxysilane, n-propyltriethoxysilane, Alkyltrialkoxy such as n-propyltripropoxysilane, n-propyltributoxysilane, n-butyltrimethoxysilane, isobutyltrimethoxysilane, n-pentyltrimethoxysilane, n-hexyltrimethoxysilane, isooctyltriethoxysilane Silane compounds;
- an alkyltrialkoxysilane compound is preferable because a curable composition that gives a cured product having better adhesion can be obtained.
- the silane compound (1) can be used alone or in combination of two or more.
- the method for polycondensing the silane compound (1) is not particularly limited.
- a method of adding a predetermined amount of a polycondensation catalyst to the silane compound (1) in a solvent or without a solvent and stirring at a predetermined temperature can be mentioned. More specifically, (a) a method of adding a predetermined amount of an acid catalyst to the silane compound (1) and stirring at a predetermined temperature, (b) adding a predetermined amount of a base catalyst to the silane compound (1). (C) A predetermined amount of an acid catalyst is added to the silane compound (1) and stirred at a predetermined temperature, and then an excess amount of a basic catalyst is added to make the reaction system basic. And a method of stirring at a predetermined temperature.
- the method (a) or (c) is preferable because the desired silane compound polymer (A) can be obtained efficiently.
- the polycondensation catalyst used may be either an acid catalyst or a base catalyst. Two or more polycondensation catalysts may be used in combination, but at least an acid catalyst is preferably used.
- the acid catalyst include inorganic acids such as phosphoric acid, hydrochloric acid, boric acid, sulfuric acid, and nitric acid; organic acids such as citric acid, acetic acid, methanesulfonic acid, trifluoromethanesulfonic acid, benzenesulfonic acid, and p-toluenesulfonic acid; etc. Is mentioned.
- at least one selected from phosphoric acid, hydrochloric acid, boric acid, sulfuric acid, citric acid, acetic acid, and methanesulfonic acid is preferable.
- the base catalyst examples include ammonia water; trimethylamine, triethylamine, lithium diisopropylamide, lithium bis (trimethylsilyl) amide, pyridine, 1,8-diazabicyclo [5.4.0] -7-undecene, aniline, picoline, 1,4- Organic bases such as diazabicyclo [2.2.2] octane and imidazole; organic salt hydroxides such as tetramethylammonium hydroxide and tetraethylammonium hydroxide; sodium methoxide, sodium ethoxide, sodium t-butoxide, potassium t-butoxide
- Metal alkoxides such as sodium hydride, metal hydrides such as calcium hydride; metal hydroxides such as sodium hydroxide, potassium hydroxide, calcium hydroxide; metals such as sodium carbonate, potassium carbonate, magnesium carbonate Salt; and the like are; sodium bicarbonate, metal bicarbonates such as potassium bicarbonate.
- the amount of the polycondensation catalyst used is usually in the range of 0.05 to 10 mol%, preferably 0.1 to 5 mol%, based on the total molar amount of the silane compound (1).
- the solvent to be used can be appropriately selected according to the type of the silane compound (1).
- water aromatic hydrocarbons such as benzene, toluene and xylene; esters such as methyl acetate, ethyl acetate, propyl acetate, butyl acetate and methyl propionate; ketones such as acetone, methyl ethyl ketone, methyl isobutyl ketone and cyclohexanone
- alcohols such as methyl alcohol, ethyl alcohol, n-propyl alcohol, isopropyl alcohol, n-butyl alcohol, isobutyl alcohol, s-butyl alcohol, t-butyl alcohol; These solvents can be used alone or in combination of two or more.
- a polycondensation reaction may be further performed under basic conditions.
- the amount of the solvent used is 0.1 to 10 liters, preferably 0.1 to 2 liters per 1 mol of the total molar amount of the silane compound (1).
- the temperature for polycondensation of the silane compound (1) is usually in the temperature range from 0 ° C. to the boiling point of the solvent used, preferably in the range of 20 to 100 ° C. If the reaction temperature is too low, the polycondensation reaction may not proceed sufficiently. On the other hand, if the reaction temperature is too high, it is difficult to suppress gelation. The reaction is usually completed in 30 minutes to 20 hours.
- an acid catalyst is used, an alkaline aqueous solution such as sodium hydrogen carbonate is added to the reaction solution.
- an acid such as hydrochloric acid. Summing is performed, and the salt produced at that time is removed by filtration or washing with water, and the desired silane compound polymer (A) can be obtained.
- the silane compound polymer (A) When the silane compound polymer (A) is produced by the above method, a portion of the silane compound (1) where no alcohol removal or the like has occurred in the OR 2 or X 1 remains in the silane compound polymer (A). To do. Therefore, the silane compound polymer (A) contains the repeating units represented by the formulas (a-4) and (a-5) in addition to the repeating units represented by the formula (a-3). Sometimes.
- Component (B) constituting the curable composition of the present invention is fine particles having an average primary particle size of 5 to 40 nm.
- the curable composition containing the component (B) is excellent in workability in the coating process.
- the average primary particle diameter of the fine particles is preferably 5 to 30 nm, more preferably 5 to 20 nm. When the average primary particle diameter is within the above range, a curable composition that is more excellent in workability in the coating process can be obtained.
- the average primary particle diameter is determined by observing the shape of the fine particles using a transmission electron microscope.
- the specific surface area of the fine particles of component (B) is preferably 10 to 500 m 2 / g, more preferably 20 to 300 m 2 / g. When the specific surface area is within the above range, a curable composition that is more excellent in workability in the coating process is easily obtained.
- the specific surface area can be determined by the BET multipoint method.
- the shape of the fine particles may be any of spherical, chain-like, needle-like, plate-like, piece-like, rod-like, and fiber-like, but is preferably spherical.
- the spherical shape means a substantially spherical shape including a polyhedron shape that can be approximated to a spherical shape, a spheroidal shape, an oval shape, a confetti shape, an eyebrow shape, and the like.
- microparticles fine-particles
- Metal Metal oxide; Mineral; Metal carbonate such as calcium carbonate and magnesium carbonate; Metal sulfate such as calcium sulfate and barium sulfate; Metal hydroxide such as aluminum hydroxide
- Metal silicates such as aluminum silicate, calcium silicate, and magnesium silicate; inorganic components such as silica; silicone; organic components such as acrylic polymers; Further, the fine particles to be used may have a modified surface.
- Metals in the periodic table are Group 1 (excluding H), Group 2-11, Group 12 (excluding Hg), Group 13 (excluding B), Group 14 (excluding C and Si), Group 15 ( N, P, As and Sb) or elements belonging to group 16 (excluding O, S, Se, Te and Po).
- silica examples include dry silica and wet silica.
- metal oxide examples include titanium oxide, alumina, boehmite, chromium oxide, nickel oxide, copper oxide, titanium oxide, zirconium oxide, indium oxide, zinc oxide, and composite oxides thereof.
- the metal oxide fine particles include sol particles composed of these metal oxides.
- Examples of minerals include smectite and bentonite.
- Examples of the smectite include montmorillonite, beidellite, hectorite, saponite, stevensite, nontronite, and soconite. In the present invention, these fine particles can be used singly or in combination of two or more.
- silica, metal oxide, and mineral are preferable, and silica is more preferable.
- surface-modified silica is preferable and hydrophobic surface-modified silica is more preferable because a curable composition that is more excellent in workability in the coating process can be easily obtained.
- Hydrophobic surface-modified silica has an alkylsilyl group having 1 to 20 tricarbon atoms such as a trimethylsilyl group; an alkylsilyl group having 1 to 20 carbon atoms such as a dimethylsilyl group; and a carbon number such as an octylsilyl group.
- the amount of component (B) used is such that the proportion of component (A) and component (B) used is the mass ratio of component (A) and component (B) (component (A): component (B)). : 0.3 to 100: 50, preferably 100: 0.5 to 100: 40, more preferably 100: 0.8 to 100: 30.
- the amount of the component (B) used is less than the above range, it is difficult to obtain the intended peel resistance effect, and when it is more than the above range, the adhesive force may be reduced.
- (C) component which comprises the curable composition of this invention is a silane coupling agent (henceforth a "silane coupling agent (C)") which has an acid anhydride structure in a molecule
- the curable composition containing the component (C) is excellent in workability in the coating process, and gives a cured product excellent in adhesion, peel resistance, and heat resistance.
- the silane coupling agent (C) is an organosilicon compound having both a group (Q) having an acid anhydride structure and a hydrolyzable group (R b ) in one molecule. Specifically, it is a compound represented by the following formula (c-1).
- Q represents an acid anhydride structure
- R a represents an alkyl group having 1 to 6 carbon atoms, or a phenyl group having or not having a substituent
- R b represents 1 to 6 represents an alkoxy group or a halogen atom
- i and k represent an integer of 1 to 3
- j represents an integer of 0 to 2
- i + j + k 4.
- R a may be the same or different.
- the plurality of R b may be the same or different.
- i is 2 or 3
- a plurality of Qs may be the same or different.
- Q is the following formula
- the alkyl group having 1 to 6 carbon atoms R a wherein same groups as those exemplified as the alkyl group having 1 to 6 carbon atoms represented by R 1 can be mentioned, substituted
- the phenyl group having a group or not having a substituent include the same groups as those exemplified for R.
- the alkoxy group having 1 to 6 carbon atoms for R b include a methoxy group, an ethoxy group, a propoxy group, an isopropoxy group, a butoxy group, and a t-butoxy group.
- the halogen atom for R b include a chlorine atom and a bromine atom.
- R b , h, i, j and k represent the same meaning as described above.
- the compound represented by these is preferable.
- h is preferably 2 to 8, more preferably 2 or 3, and particularly preferably 3.
- silane coupling agent represented by the formula (c-2) examples include 2- (trimethoxysilyl) ethyl succinic anhydride, 2- (triethoxysilyl) ethyl succinic anhydride, 3- (trimethoxy Tri (carbon number 1-6) alkoxysilyl (carbon number 2-8) alkyl succinic anhydride, such as silyl) propyl succinic anhydride, 3- (triethoxysilyl) propyl succinic anhydride; Di (C 1-6) alkoxymethylsilyl (C 2-8) alkyl succinic anhydride, such as 2- (dimethoxymethylsilyl) ethyl succinic anhydride; (C1-C6) alkoxydimethylsilyl (C2-C8) alkyl succinic anhydride, such as 2- (methoxydimethylsilyl) ethyl succinic anhydride;
- Trihalogenosilyl (2 to 8 carbon atoms) alkyl succinic anhydride such as 2- (trichlorosilyl) ethyl succinic anhydride, 2- (tribromosilyl) ethyl succinic anhydride; Dihalogenomethylsilyl (2-8 carbon atoms) alkyl succinic anhydride, such as 2- (dichloromethylsilyl) ethyl succinic anhydride; And halogenodimethylsilyl (having 2 to 8 carbon atoms) alkyl succinic anhydride such as 2- (chlorodimethylsilyl) ethyl succinic anhydride.
- a silane coupling agent (C) can be used individually by 1 type or in combination of 2 or more types.
- silane coupling agent (C) tri (carbon number 1 to 6) alkoxysilyl (carbon number 2 to 8) alkyl succinic anhydride is preferable, and 3- (trimethoxysilyl) propyl succinic anhydride, 3- (Triethoxysilyl) propyl succinic anhydride is particularly preferred.
- the amount of component (C) used is preferably such that the proportion of component (A) and component (C) used is the mass ratio of component (A) and component (C) (component (A): component (C)). Is 100: 0.01 to 100: 30, more preferably 100: 0.1 to 100: 10.
- the cured product of the curable composition of the present invention is superior in heat resistance and adhesiveness.
- the curable composition of the present invention may contain a silane coupling agent having a nitrogen atom in the molecule (hereinafter sometimes referred to as “silane coupling agent (D)”) as the component (D). .
- silane coupling agent (D) a silane coupling agent having a nitrogen atom in the molecule
- the curable composition containing the component (D) gives a cured product that is more excellent in workability in the coating process and more excellent in adhesiveness, peel resistance, and heat resistance.
- the silane coupling agent (D) is not particularly limited as long as it is a silane coupling agent having a nitrogen atom in the molecule.
- Examples thereof include trialkoxysilane compounds represented by the following formula (d-1), dialkoxyalkylsilane compounds or dialkoxyarylsilane compounds represented by the formula (d-2), and the like.
- R c represents an alkoxy group having 1 to 6 carbon atoms such as a methoxy group, an ethoxy group, an n-propoxy group, an isopropoxy group, an n-butoxy group, or a t-butoxy group.
- a plurality of R c may be the same or different.
- R d represents an alkyl group having 1 to 6 carbon atoms such as a methyl group, an ethyl group, an n-propyl group, an isopropyl group, an n-butyl group or a t-butyl group; or a phenyl group, a 4-chlorophenyl group, 4- An aryl group having a substituent or not having a substituent, such as a methylphenyl group;
- R e represents a C 1-10 organic group having a nitrogen atom. R e may further be bonded to a group containing another silicon atom.
- Specific examples of the organic group having 1 to 10 carbon atoms R e is, N-2- (aminoethyl) -3-aminopropyl group, 3-aminopropyl group, N-(1,3-dimethyl - butylidene) amino Examples thereof include a propyl group, a 3-ureidopropyl group, and an N-phenyl-aminopropyl group.
- the compound in which R e is an organic group bonded to another group containing a silicon atom includes an isocyanurate skeleton. And an isocyanurate-based silane coupling agent bonded to another silicon atom, and an urea-based silane coupling agent bonded to another silicon atom via a urea skeleton.
- silane coupling agent (D) an isocyanurate-based silane coupling agent and a urea-based silane coupling agent are preferable because a cured product having higher adhesive force is easily obtained.
- those having 4 or more alkoxy groups bonded to silicon atoms are preferred. Having 4 or more alkoxy groups bonded to silicon atoms means that the total count of alkoxy groups bonded to the same silicon atom and alkoxy groups bonded to different silicon atoms is 4 or more.
- a compound represented by the following formula (d-3) is a urea-based silane cup having 4 or more alkoxy groups bonded to silicon atoms.
- the ring agent include compounds represented by the following formula (d-4).
- R c represents the same meaning as described above.
- t1 to t5 each independently represents an integer of 1 to 10, preferably an integer of 1 to 6, and particularly preferably 3.
- Specific examples of the compound represented by the formula (d-3) include 1,3,5-N-tris (3-trimethoxysilylpropyl) isocyanurate, 1,3,5, -N-tris (3- Triethoxysilylpropyl) isocyanurate, 1,3,5, -N-tris (3-trii-propoxysilylpropyl) isocyanurate, 1,3,5, -N-tris (3-tributoxysilylpropyl) isocyanate 1,3,5-N-tris [(tri (C1-6) alkoxy) silyl (C1-10) alkyl] isocyanurate such as nurate; 1,3,5, -N-tris (3-ditoxymethylsilylpropyl) isocyanurate, 1,3,5, -N-tris (3-dimethoxyethylsilylpropyl) isocyanurate, 1,3,5,- N-tris (3-dimethoxy i-propylsilylpropyl) isocyan
- Specific examples of the compound represented by the formula (d-4) include N, N′-bis (3-trimethoxysilylpropyl) urea, N, N′-bis (3-triethoxysilylpropyl) urea, N N, N′-bis (3-tripropoxysilylpropyl) urea, N, N′-bis (3-tributoxysilylpropyl) urea, N, N′-bis (2-trimethoxysilylethyl) urea, N′-bis [(tri (C1-6) alkoxysilyl) (C1-10) alkyl] urea; N, N′-bis (3-dimethoxymethylsilylpropyl) urea, N, N′-bis (3-dimethoxyethylsilylpropyl) urea, N, N′-bis (3-diethoxymethylsilylpropyl) urea, etc.
- silane coupling agent (D) 1,3,5-N-tris (3-trimethoxysilylpropyl) isocyanurate, 1,3,5-N-tris (3-triethoxysilylpropyl) ) Isocyanurate (hereinafter referred to as “isocyanurate compound”), N, N′-bis (3-trimethoxysilylpropyl) urea, N, N′-bis (3-triethoxysilylpropyl) urea (hereinafter referred to as “ It is preferable to use a combination of an isocyanurate compound and a urea compound.
- the use ratio of both is preferably 100: 1 to 100: 200 in terms of mass ratio of (isocyanurate compound) and (urea compound). 10 to 100: 110 is more preferable.
- a silane coupling agent (D) can be used individually by 1 type or in combination of 2 or more types.
- the curable composition of this invention contains (D) component
- content of (D) component is although it does not specifically limit
- Mass ratio of said (A) component and (D) component [(A) component: Component (D)] is preferably in an amount of 100: 0.3 to 100: 40, more preferably 100: 1 to 100: 30, and still more preferably 100: 3 to 100: 25.
- the cured product of the curable composition containing the component (A) and the component (D) at such a ratio becomes more excellent in heat resistance and adhesiveness.
- the curable composition of the present invention further includes a silane coupling agent having a sulfur atom-containing functional group in the molecule (hereinafter sometimes referred to as “silane coupling agent (E)”) as the component (E). You may contain.
- silane coupling agent (E) a silane coupling agent having a sulfur atom-containing functional group in the molecule
- the curable composition containing the component (E) gives a cured product that is more excellent in workability in the coating process and more excellent in adhesiveness, peel resistance, and heat resistance.
- the sulfur atom-containing functional group includes a thiol group (—SH); an acylthio group (—S—CO—R ′); a sulfide group (—S—); a disulfide group (—S—S—), a tetrasulfide group (— And polysulfide groups such as SS—S—S—) [— (S) n —];
- silane coupling agent (E) examples include silane coupling agents represented by any one of the following formulas (e-1) to (e-4), other silane coupling agents having a sulfur atom-containing functional group, and the like. And the like.
- Y 1 and Y 2 each independently represents an alkoxy group having 1 to 10 carbon atoms, and A 1 and A 2 each independently represents a carbon having a substituent or no substituent.
- v represents an integer of 1 to 4.
- Y 1 and Y 2 may be the same as or different from each other.
- alkoxy group having 1 to 10 carbon atoms of Y 1 and Y 2 examples include a methoxy group, an ethoxy group, an n-propoxy group, an isopropoxy group, an n-butoxy group, an s-butoxy group, an isobutoxy group, and a t-butoxy group.
- Etc. Y 1 and Y 2 are more preferably an alkoxy group having 1 to 6 carbon atoms.
- Examples of the divalent hydrocarbon group having 1 to 20 carbon atoms having or not having a substituent of A 1 and A 2 include an alkylene group having 1 to 20 carbon atoms and an alkenylene having 2 to 20 carbon atoms.
- Examples of the alkylene group having 1 to 20 carbon atoms include methylene group, ethylene group, propylene group, trimethylene group, tetramethylene group, pentamethylene group and hexamethylene group.
- Examples of the alkenylene group having 2 to 20 carbon atoms include vinylene group, propenylene group, butenylene group and pentenylene group.
- Examples of the alkynylene group having 2 to 20 carbon atoms include an ethynylene group and a propynylene group.
- Examples of the arylene group having 6 to 20 carbon atoms include an o-phenylene group, an m-phenylene group, a p-phenylene group, and a 2,6-naphthylene group.
- alkylene group having 1 to 20 carbon atoms, alkenylene group having 2 to 20 carbon atoms, and alkynylene group having 2 to 20 carbon atoms may have include a halogen atom such as a fluorine atom and a chlorine atom.
- An alkoxy group such as a methoxy group or an ethoxy group; an alkoxycarbonyl group such as a methoxycarbonyl group or an ethoxycarbonyl group;
- substituent of the arylene group having 6 to 20 carbon atoms examples include cyano group; nitro group; halogen atom such as fluorine atom, chlorine atom and bromine atom; alkyl group such as methyl group and ethyl group; methoxy group, ethoxy group and the like And the like. These substituents may be bonded at arbitrary positions in groups such as an alkylene group, an alkenylene group, an alkynylene group, and an arylene group, and a plurality of them may be bonded in the same or different manner.
- a divalent group consisting of a combination of a substituted or non-substituted group (alkylene group, alkenylene group or alkynylene group) and a substituted or non-substituted arylene group , At least one of the above-mentioned substituents or no substituents (an alkylene group, an alkenylene group, or an alkynylene group) and at least one of the arylene groups having the above-mentioned substituents or no substituents. Examples include groups bonded in series. Specific examples include groups represented by the following formula.
- a 1 and A 2 are preferably alkylene groups having 1 to 4 carbon atoms such as a methylene group, an ethylene group, a propylene group, a trimethylene group, and a tetramethylene group.
- R ′ is not particularly limited as long as —CO—R ′ can function as a protecting group.
- Examples of the substituent of the phenyl group having the substituent of R ′ include methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, s-butyl group, isobutyl group, t-butyl group, and n-pentyl. And alkyl groups such as n-hexyl group; halogen atoms such as fluorine atom, chlorine atom and bromine atom; alkoxy groups such as methoxy group and ethoxy group.
- R ′ is preferably an alkyl group having 1 to 20 carbon atoms, and more preferably an alkyl group having 1 to 10 carbon atoms.
- v represents an integer of 1 to 4, preferably 1, 2 or 4, more preferably 2 or 4.
- Examples of the silane coupling agent represented by the formula (e-1) include mercaptomethyltrimethoxysilane, mercaptomethyltriethoxysilane, mercaptomethyltripropoxysilane, 2-mercaptoethyltrimethoxysilane, 2-mercaptoethyltriethoxysilane, And mercaptoalkyltrialkoxysilanes such as 2-mercaptoethyltripropoxysilane, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, and 3-mercaptopropyltripropoxysilane.
- silane coupling agent represented by the formula (e-2) examples include 2-hexanoylthioethyltrimethoxysilane, 2-hexanoylthioethyltriethoxysilane, 2-octanoylthioethyltrimethoxysilane, and 2-octanoyl.
- Examples of the silane coupling agent represented by the formula (e-3) include 2-trimethoxysilylethylsulfanyltrimethoxysilane, 2-trimethoxysilylethylsulfanyltriethoxysilane, 2-triethoxysilylethylsulfanyltrimethoxysilane, 2 -Triethoxysilylethylsulfanyltriethoxysilane, 3-trimethoxysilylpropylsulfanyltrimethoxysilane, 3-trimethoxysilylpropylsulfanyltriethoxysilane, 3-triethoxysilylpropylsulfanyltrimethoxysilane, 3-triethoxysilylpropylsulfanylpropylsulfanyltrimethoxysilane, 3-triethoxysilylpropylsulfanyl Examples include triethoxysilane.
- Examples of the silane coupling agent represented by the formula (e-4) include bis (2-trimethoxysilylethyl) disulfide, bis (2-triethoxysilylethyl) disulfide, bis (3-trimethoxysilylpropyl) disulfide, bis Disulfide compounds such as (3-triethoxysilylpropyl) disulfide, bis (4-trimethoxysilylbutyl) disulfide, bis (4-triethoxysilylbutyl) disulfide; bis (2-triethoxysilylethyl) tetrasulfide, bis ( And tetrasulfide compounds such as 3-trimethoxysilylpropyl) tetrasulfide and bis (3-triethoxysilylpropyl) tetrasulfide;
- silane coupling agents having a sulfur atom-containing functional group include 3-trimethoxysilylpropyl-N, N-dimethylthiocarbamoyl tetrasulfide, 3-triethoxysilylpropyl-N, N-dimethylthiocarbamoyl tetrasulfide, Thiocarbamoyl group-containing silane coupling agents such as 2-triethoxysilylethyl-N, N-dimethylthiocarbamoyl tetrasulfide and 2-trimethoxysilylethyl-N, N-dimethylthiocarbamoyl tetrasulfide; 3-trimethoxysilylpropyl Benzothiazolyl group-containing silane coupling agents such as benzothiazolyl tetrasulfide and 3-triethoxysilylpropylbenzothiazolyl tetrasulfide; 3-triethoxysily
- (meth) acrylate group-containing silane coupling agent [ "(meth) acrylate” means acrylate or methacrylate. And bis (3-triethoxysilylpropyl) polysulfide, bis (2-triethoxysilylpropyl) polysulfide, bis (4-triethoxysilylbutyl) polysulfide and other polysulfide group-containing silane coupling agents.
- a silane coupling agent represented by the formula (e-1) or the formula (e-3) and oligomers thereof are preferable, and 2-mercaptoethyltrimethoxysilane, 2- In formula (e-1), Y 1 such as mercaptoethyltriethoxysilane, 2-mercaptoethyltripropoxysilane, 3-mercaptopropyltrimethoxysilane, 3-mercaptopropyltriethoxysilane, 3-mercaptopropyltripropoxysilane, etc.
- a silane coupling agent in which is an alkoxy group having 1 to 10 carbon atoms 2-trimethoxysilylethylsulfanyltrimethoxysilane, 2-trimethoxysilylethylsulfanyltriethoxysilane, 2-triethoxysilylethylsulfanyltrimethoxysilane, 2 -Triethoxy Rylethylsulfanyltriethoxysilane, 3-trimethoxysilylpropylsulfanyltrimethoxysilane, 3-trimethoxysilylpropylsulfanyltriethoxysilane, 3-triethoxysilylpropylsulfanyltrimethoxysilane, 3-triethoxysilylpropylsulfanyltriethoxysilane, More preferred are silane coupling agents in which Y 1 and Y 2 are alkoxy groups having 1 to 10 carbon atoms in formula (e-3); and oli
- the curable composition of this invention contains (E) component
- content of (E) component is although it does not specifically limit
- Mass ratio of said (A) component and (E) component [(A) component: Component (E)] is preferably 100: 0.1 to 100: 50, more preferably 100: 0.3 to 100: 30, and still more preferably 100: 0.4 to 100: 25.
- the cured product of the curable composition containing the component (A) and the component (E) at such a ratio becomes more excellent in heat resistance and adhesiveness.
- the curable composition of the present invention may contain a diluent.
- the diluent is used for the purpose of imparting fluidity to the curable composition of the present invention.
- the diluent for example, diethylene glycol monobutyl ether acetate, glycerin diglycidyl ether, butanediol diglycidyl ether, diglycidyl aniline, neopentyl glycol glycidyl ether, cyclohexane dimethanol diglycidyl ether, alkylene diglycidyl ether, polyglycol diglycidyl ether Polypropylene glycol diglycidyl ether, trimethylolpropane triglycidyl ether, glycerin triglycidyl ether, 4-vinylcyclohexene monooxide, vinylcyclohexene dioxide, methylated vinylcyclohexene dioxide, and the like.
- the amount of the diluent used is preferably 50 to 100% by mass, more preferably 60 to 90% by mass, and 70 to 85% by mass of the solid content of the curable composition of the present invention. Is more preferable.
- the curable composition of this invention contains a diluent, the total amount of (A) component, (B) component, and (C) component is with respect to the whole component except the diluent of a curable composition.
- it is preferably 50 to 100% by mass, and more preferably 60 to 100% by mass.
- the cured product of the curable composition of the present invention is more excellent in heat resistance and adhesiveness.
- the curable composition of the present invention may further contain other components in the above-described component within a range not impairing the object of the present invention.
- examples of other components include an antioxidant, an ultraviolet absorber, and a light stabilizer.
- An antioxidant is added to prevent oxidative degradation during heating.
- examples of the antioxidant include phosphorus antioxidants, phenolic antioxidants, sulfur antioxidants and the like.
- Examples of phosphorus antioxidants include phosphites and oxaphosphaphenanthrene oxides.
- phenolic antioxidants include monophenols, bisphenols, and high-molecular phenols.
- sulfur-based antioxidant include dilauryl-3,3'-thiodipropionate, dimyristyl-3,3'-thiodipropionate, distearyl-3,3'-thiodipropionate, and the like.
- antioxidants can be used alone or in combination of two or more.
- the usage-amount of antioxidant is 10 mass% or less normally with respect to (A) component.
- the ultraviolet absorber is added for the purpose of improving the light resistance of the resulting cured product.
- examples of the ultraviolet absorber include salicylic acids, benzophenones, benzotriazoles, hindered amines and the like.
- An ultraviolet absorber can be used individually by 1 type or in combination of 2 or more types.
- the usage-amount of a ultraviolet absorber is 10 mass% or less normally with respect to (A) component.
- the light stabilizer is added for the purpose of improving the light resistance of the resulting cured product.
- the light stabilizer include poly [ ⁇ 6- (1,1,3,3, -tetramethylbutyl) amino-1,3,5-triazine-2,4-diyl ⁇ ⁇ (2,2,6 , 6-tetramethyl-4-piperidine) imino ⁇ hexamethylene ⁇ (2,2,6,6-tetramethyl-4-piperidine) imino ⁇ ] and the like.
- These light stabilizers can be used alone or in combination of two or more. The total amount of these other components is usually 20% by mass or less based on the component (A).
- the curable composition of the present invention is prepared, for example, by mixing the component (A), the component (B), the component (C), and other components as required, and defoaming the mixture. Can do.
- a mixing method and a defoaming method are not particularly limited, and a known method can be used.
- Such a curable composition of the present invention is excellent in workability in the coating process. That is, when the curable composition of the present invention is discharged from the discharge pipe, and then the discharge pipe is pulled up, the amount of stringing is small or it is interrupted immediately. Therefore, when the curable composition of the present invention is used, the surroundings are not contaminated by resin jumping. Moreover, the surroundings of the curable composition of the present invention are not contaminated by spreading the droplets after coating.
- the viscosity of the curable composition is preferably 2 to 10 Pa ⁇ s, preferably 4 to 8 Pa when measured at 25 ° C. and 200 s ⁇ 1 using an E-type viscometer. -S is more preferable.
- the curable composition of the present invention is suitably used as a raw material for optical parts and molded articles, an adhesive, a coating agent, and the like.
- the curable composition of the present invention can be suitably used as an optical element fixing composition. .
- the cured product of the present invention is obtained by curing the curable composition of the present invention.
- Heat curing is mentioned as a method of hardening the curable composition of this invention.
- the heating temperature for curing is usually 100 to 200 ° C., and the heating time is usually 10 minutes to 20 hours, preferably 30 minutes to 10 hours.
- cured material of this invention is excellent in adhesiveness, peeling resistance, and heat resistance. Therefore, the hardened
- the cured product of the present invention is excellent in peel resistance. That is, after a curable composition is applied to an LED lead frame, a sapphire chip is pressure-bonded and cured by heat treatment at 170 ° C. for 2 hours, and then a sealing material is poured into the cup. A test piece of a cured product is obtained by heat treatment for a time. This test piece was exposed to an environment of 85 ° C. and 85% RH for 168 hours, then pre-heated at 160 ° C. and treated by IR reflow with a maximum temperature of 260 ° C. for 1 minute, and then a heat cycle tester The test is allowed to stand at ⁇ 40 ° C. and + 100 ° C.
- the sealing material is removed, and it is examined whether or not the elements are peeled off together.
- the probability of peeling is usually 45% or less, more preferably 25% or less.
- the curable composition of the present invention is applied to the mirror surface of a silicon chip, and the coated surface is placed on an adherend, pressure-bonded, and heat-treated to be cured. This is left for 30 seconds on a measurement stage of a bond tester that has been heated to a predetermined temperature (for example, 23 ° C., 100 ° C.) in advance, and in a horizontal direction (shearing) with respect to the adhesion surface from a position 50 ⁇ m high from the adherend. Direction) and measure the adhesive force between the test piece and the adherend.
- a predetermined temperature for example, 23 ° C., 100 ° C.
- the adhesive strength of the cured product is preferably 60 N / 2 mm ⁇ or more at 23 ° C., more preferably 80 N / 2 mm ⁇ or more, and particularly preferably 100 N / 2 mm ⁇ or more.
- the adhesive strength of the cured product is preferably 40 N / 2 mm ⁇ or more at 100 ° C., more preferably 50 N / 2 mm ⁇ or more, and particularly preferably 60 N / 2 mm ⁇ or more.
- the method of the present invention is a method of using the curable composition of the present invention as an adhesive for optical element fixing materials or a sealing material for optical element fixing materials.
- optical elements include light emitting elements such as LEDs and LDs, light receiving elements, composite optical elements, and optical integrated circuits.
- the curable composition of this invention can be used conveniently as an adhesive agent for optical element fixing materials.
- the composition is applied to one or both adhesive surfaces of a material to be bonded (such as an optical element and its substrate). After the pressure bonding, there is a method in which the material to be bonded is firmly bonded by heat curing.
- Substrate materials for bonding optical elements include glass such as soda lime glass and heat-resistant hard glass; ceramics; sapphire; iron, copper, aluminum, gold, silver, platinum, chromium, titanium, and alloys of these metals , Metals such as stainless steel (SUS302, SUS304, SUS304L, SUS309, etc.); polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, ethylene-vinyl acetate copolymer, polystyrene, polycarbonate, polymethylpentene, polysulfone, polyetheretherketone , Synthetic resins such as polyethersulfone, polyphenylene sulfide, polyetherimide, polyimide, polyamide, acrylic resin, norbornene resin, cycloolefin resin, glass epoxy resin, etc. It is below.
- the heating temperature at the time of heat curing is usually 100 to 200 ° C. although it depends on the curable composition used.
- the heating time is usually 10 minutes to 20 hours, preferably 30 minutes to 10 hours.
- the curable composition of this invention can be used suitably as a sealing material for optical element fixing materials.
- a method of using the curable composition of the present invention as an encapsulant for an optical element fixing material for example, after molding the composition into a desired shape to obtain a molded body containing an optical element, the process itself The method of manufacturing an optical element sealing body by heat-hardening is mentioned.
- the method for molding the curable composition of the present invention into a desired shape is not particularly limited, and a known molding method such as a normal transfer molding method or a casting method can be employed.
- the heating temperature at the time of heat curing is usually 100 to 200 ° C. although it depends on the curable composition used.
- the heating time is usually 10 minutes to 20 hours, preferably 30 minutes to 10 hours.
- the obtained optical element sealing body uses the curable composition of the present invention, it is excellent in peel resistance and heat resistance and has high adhesive strength.
- optical device of this invention uses the curable composition of this invention as an adhesive agent for optical element fixing materials, or a sealing material for optical element fixing materials.
- optical elements include light emitting elements such as LEDs and LDs, light receiving elements, composite optical elements, and optical integrated circuits.
- the optical device of the present invention is obtained by fixing an optical element using the curable composition of the present invention as an adhesive for optical element fixing material or a sealing material for optical element fixing material. For this reason, the optical element is fixed with a high adhesive force and has excellent durability.
- the mass average molecular weight (Mw) and the number average molecular weight (Mn) of the silane compound polymer obtained in Production Example 1 were standard polystyrene equivalent values, and were measured using the following apparatus and conditions.
- silane compound polymer (A1) This had a weight average molecular weight (MW) of 7,800 and a molecular weight distribution (Mw / Mn) of 4.52.
- IR spectrum data of the silane compound polymer (A1) are shown below. Si—CH 3 : 1272 cm ⁇ 1 , 1409 cm ⁇ 1 , Si—O: 1132 cm ⁇ 1
- Example 1 To 100 parts of the silane compound polymer (A1), 15 parts of fine particles (B1) and 1 part of a silane coupling agent (C1) were added, and further measured using an E-type viscometer at 25 ° C. and 200 s ⁇ 1 . Diethylene glycol monobutyl ether acetate was added so that the viscosity at that time was 4.3 Pa ⁇ s, and the entire volume was sufficiently mixed and defoamed to obtain a curable composition.
- Examples 2 to 110, Comparative Examples 1 to 8, Reference Examples 1 to 3 A curable composition was obtained in the same manner as in Example 1 except that the compositions and viscosities described in Tables 1 to 4 were changed.
- the curable composition was applied to the mirror surface of a 2 mm square silicon chip so that the thickness was about 2 ⁇ m, and the coated surface was placed on an adherend (silver-plated copper plate) and pressure-bonded. Then, it heat-processed at 170 degreeC for 2 hours, it was made to harden
- the test piece-attached adherend is left on a measurement stage of a bond tester (manufactured by Daisy Corporation, series 4000) previously heated to a predetermined temperature (23 ° C., 100 ° C.) for 30 seconds, and is 50 ⁇ m in height from the adherend.
- the corner of the curable composition ( The ease of disappearance of the raised portion at the center of the coated droplet was evaluated. A: The corner almost disappeared. B: The corner disappeared a little. C: The corner did not disappear at all. A curable composition in which corners are difficult to disappear and the stringing height is high tends to cause resin jumping.
- a dispenser (product name: SHOTMASTER300 manufactured by Musashi Engineering Co., Ltd.) is used to discharge pressure using a needle having a needle outer diameter of 0.56 mm, a needle inner diameter of 0.31 mm, and a needle length of 8 mm. About 0.4 mm ⁇ was applied under the conditions of 300 kPa and a discharge time of 150 to 400 milliseconds.
- the curable compositions of Examples 1-110 are excellent in workability at the time of application, and give a cured product excellent in adhesion, peel resistance, and heat resistance.
- the curable composition of Comparative Example 1 that does not contain fine particles is inferior in workability at the time of application, and the obtained cured product is inferior in adhesiveness, peel resistance, and heat resistance.
- the curable composition of Comparative Example 8 containing fine particles having a large average primary particle size is also inferior in workability at the time of application.
- cured products obtained using the curable compositions of Comparative Examples 2 to 7 that do not contain the component (C) are inferior in adhesion, peel resistance, and heat resistance.
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Abstract
Description
また、硬化性組成物は、光素子封止体を製造する際に、光素子用接着剤や光素子用封止材等の光素子固定材用組成物としても注目を浴びてきている。
近年においては、発光のピーク波長がより短波長である青色光や白色光の光素子が開発され広く使用されてきている。このような発光のピーク波長の短い発光素子の高輝度化が飛躍的に進み、これに伴い、光素子の発熱量がさらに大きくなっていく傾向にある。
しかしながら、特許文献1~4に記載された組成物や部材等の硬化物であっても、十分な接着力を保ちつつ、耐剥離性、耐熱性を得るのは困難な場合があった。
この問題は硬化性組成物の粘性を低くすることで解消することも可能である。しかしながら、この場合、吐出された硬化性組成物が広がり易いため、このことが原因で、周囲の汚染を引き起こすことがあった。
〔1〕下記(A)~(C)成分を含有する硬化性組成物であって、(A)成分と(B)成分とを、(A)成分と(B)成分の質量比で、〔(A)成分:(B)成分〕=100:0.3~100:50の割合で含有することを特徴とする硬化性組成物。
(A)成分:下記式(a-1)
で示される繰り返し単位を有する硬化性ポリシルセスキオキサン化合物
(B)成分:平均一次粒子径が5~40nmの微粒子
(C)成分:分子内に酸無水物構造を有するシランカップリング剤
〔2〕前記(A)成分の硬化性ポリシルセスキオキサン化合物の質量平均分子量(Mw)が800~30,000である、〔1〕に記載の硬化性組成物。
〔3〕前記(A)成分の硬化性ポリシルセスキオキサン化合物が、下記式(a-2)
で示される化合物の少なくとも1種を、重縮合触媒の存在下に重縮合させて得られるものである、〔1〕に記載の硬化性組成物。
〔4〕前記(B)成分が、シリカ、金属酸化物、及び鉱物からなる群から選ばれる少なくとも1種の微粒子である〔1〕に記載の硬化性組成物。
〔5〕前記(C)成分を、(A)成分と(C)成分の質量比で、〔(A)成分:(C)成分〕=100:0.01~100:30の割合で含有する、〔1〕に記載の硬化性組成物。
〔6〕さらに、希釈剤を含有する〔1〕に記載の硬化性組成物。
〔7〕前記(A)成分、(B)成分および(C)成分の合計量が、硬化性組成物の希釈剤を除いた成分全体に対して、50~100質量%である、〔6〕に記載の硬化性組成物。
〔8〕前記硬化性組成物の固形分濃度が、50質量%以上、100質量%)である、〔6〕に記載の硬化性組成物。
〔9〕下記工程(I)及び工程(II)を有することを特徴とする、〔1〕に記載の硬化性組成物の製造方法。
工程(I):下記式(a-2)
で示される化合物の少なくとも1種を、重縮合触媒の存在下に重縮合させて、硬化性ポリシルセスキオキサン化合物を得る工程
工程(II):工程(I)で得られた硬化性ポリシルセスキオキサン化合物と、前記(B)成分及び(C)成分とを混合する工程
〔10〕前記〔1〕に記載の硬化性組成物を硬化させて得られる硬化物。
〔11〕光素子固定材である〔10〕に記載の硬化物。
〔12〕前記〔1〕に記載の硬化性組成物を、光素子固定材用接着剤として使用する方法。
〔13〕前記〔1〕に記載の硬化性組成物を、光素子固定材用封止材として使用する方法。
〔14〕前記〔1〕に記載の硬化性組成物を、光素子固定材用接着剤又は光素子固定材用封止材として用いてなる光デバイス。
本発明の硬化性組成物は、光素子固定材用接着剤、及び光素子固定材用封止材として好適に使用することができる。
本発明の硬化物は、耐熱性に優れ、かつ、高い接着力を有する。
本発明の硬化性組成物は、下記(A)~(C)成分を含有する硬化性組成物であって、(A)成分と(B)成分とを、(A)成分と(B)成分の質量比で、〔(A)成分:(B)成分〕=100:0.3~100:50の割合で含有することを特徴とする。
(A)成分:下記式(a-1)
で示される繰り返し単位を有する硬化性ポリシルセスキオキサン化合物
(B)成分:平均一次粒子径が5~40nmの微粒子
(C)成分:分子内に酸無水物構造を有するシランカップリング剤
本発明の硬化性組成物を構成する(A)成分は、前記式(a-1)で示される繰り返し単位を有する硬化性ポリシルセスキオキサン化合物(以下、「シラン化合物重合体(A)」ということがある。)である。
Gは水酸基の保護基を表す。水酸基の保護基としては、特に制約はなく、水酸基の保護基として知られている公知の保護基が挙げられる。例えば、アシル系の保護基;トリメチルシリル基、トリエチルシリル基、t-ブチルジメチルシリル基、t-ブチルジフェニルシリル基等のシリル系の保護基;メトキシメチル基、メトキシエトキシメチル基、1-エトキシエチル基、テトラヒドロピラン-2-イル基、テトラヒドロフラン-2-イル基等のアセタール系の保護基;t-ブトキシカルボニル基等のアルコキシカルボニル系の保護基;メチル基、エチル基、t-ブチル基、オクチル基、アリル基、トリフェニルメチル基、ベンジル基、p-メトキシベンジル基、フルオレニル基、トリチル基、ベンズヒドリル基等のエーテル系の保護基;等が挙げられる。これらの中でも、Gとしては、アシル系の保護基が好ましい。
R1の、置換基を有するアリール基の置換基としては、メチル基、エチル基、n-プロピル基、イソプロピル基、n-ブチル基、s-ブチル基、イソブチル基、t-ブチル基、n-ペンチル基、n-ヘキシル基、n-ヘプチル基、n-オクチル基、イソオクチル基等のアルキル基;フッ素原子、塩素原子、臭素原子等のハロゲン原子;メトキシ基、エトキシ基等のアルコキシ基;が挙げられる。
Tサイトの構造としては、具体的には、下記式(a-3)~(a-5)で示されるものが挙げられる。
シラン化合物重合体(A)は、T3の積分値が、T1、T2、およびT3の積分値の合計値に対して、60~90%のものが好ましい。
シラン化合物重合体(A)中の、前記式(a-1)で示される繰り返し単位の含有割合は、例えば、シラン化合物重合体(A)の29Si-NMRを測定することにより求めることができる。
また、シラン化合物重合体(A)の構造は、ラダー型構造、ダブルデッカー型構造、籠型構造、部分開裂籠型構造、環状型構造、ランダム型構造のいずれの構造であってもよい。
質量平均分子量(Mw)及び数平均分子量(Mn)は、例えば、テトラヒドロフラン(THF)を溶媒とするゲル・パーミエーション・クロマトグラフィー(GPC)による標準ポリスチレン換算値として求めることができる。
で示されるシラン化合物(1)の少なくとも1種を重縮合させることにより、シラン化合物重合体(A)を製造することができる。
R2の炭素数1~10のアルキル基としては、R3の炭素数1~10のアルキル基として示したものと同様のものが挙げられる。
X1のハロゲン原子としては、塩素原子、及び臭素原子等が挙げられる。
これらの中でも、シラン化合物(1)としては、接着性により優れる硬化物を与える硬化性組成物が得られることから、アルキルトリアルコキシシラン化合物類が好ましい。
シラン化合物(1)は1種単独で、あるいは2種以上を組み合わせて用いることができる。
酸触媒としては、リン酸、塩酸、ホウ酸、硫酸、硝酸等の無機酸;クエン酸、酢酸、メタンスルホン酸、トリフルオロメタンスルホン酸、ベンゼンスルホン酸、p-トルエンスルホン酸等の有機酸;等が挙げられる。これらの中でも、リン酸、塩酸、ホウ酸、硫酸、クエン酸、酢酸、及びメタンスルホン酸から選ばれる少なくとも1種が好ましい。
本発明の硬化性組成物を構成する(B)成分は、平均一次粒子径が5~40nmの微粒子である。
(B)成分を含有する硬化性組成物は、塗布工程における作業性に優れる。
微粒子の平均一次粒子径は、好ましくは5~30nm、より好ましくは5~20nmである。平均一次粒子径が上記範囲内であることで、塗布工程における作業性により優れる硬化性組成物を得ることができる。
比表面積は、BET多点法により求めることができる。
また、用いる微粒子は表面が修飾されたものであってもよい。
スメクタイトとしては、例えば、モンモリロナイト、バイデライト、ヘクトライト、サポナイト、スチブンサイト、ノントロナイト、ソーコナイト等が挙げられる。
本発明においては、これらの微粒子を一種単独で、あるいは二種以上を組み合わせて用いることができる。
シリカの中でも、塗布工程における作業性により優れる硬化性組成物が得られ易いことから、表面修飾されたシリカが好ましく、疎水性の表面修飾シリカがより好ましい。
疎水性の表面修飾シリカとしては、表面に、トリメチルシリル基等のトリ炭素数1~20のアルキルシリル基;ジメチルシリル基等のジ炭素数1~20のアルキルシリル基;オクチルシリル基等の炭素数1~20のアルキルシリル基;を結合させたシリカ;シリコーンオイルで表面を処理したシリカ;等が挙げられる。
(C)成分を含有する硬化性組成物は、塗布工程における作業性に優れ、かつ、接着性、耐剥離性、及び耐熱性に優れる硬化物を与える。
Qとしては、下記式
式(c-1)中、Raの炭素数1~6のアルキル基としては、前記R1で表される炭素数1~6のアルキル基として例示したのと同様の基が挙げられ、置換基を有する、又は置換基を有さないフェニル基としては、前記Rで例示したのと同様の基が挙げられる。
Rbの炭素数1~6のアルコキシ基としては、メトキシ基、エトキシ基、プロポキシ基、イソプロポキシ基、ブトキシ基、t-ブトキシ基等が挙げられる。
Rbのハロゲン原子としては、塩素原子、臭素原子等が挙げられる。
で表される化合物が好ましい。式中、hは2~8であるのが好ましく、2又は3であるのがより好ましく、3であるのが特に好ましい。
2-(ジメトキシメチルシリル)エチル無水コハク酸等の、ジ(炭素数1~6)アルコキシメチルシリル(炭素数2~8)アルキル無水コハク酸;
2-(メトキシジメチルシリル)エチル無水コハク酸等の、(炭素数1~6)アルコキシジメチルシリル(炭素数2~8)アルキル無水コハク酸;
2-(ジクロロメチルシリル)エチル無水コハク酸等の、ジハロゲノメチルシリル(炭素数2~8)アルキル無水コハク酸;
2-(クロロジメチルシリル)エチル無水コハク酸等の、ハロゲノジメチルシリル(炭素数2~8)アルキル無水コハク酸;等が挙げられる。
シランカップリング剤(C)は、1種単独で、あるいは2種以上を組み合わせて用いることができる。
このような割合で(A)成分及び(C)成分を用いることにより、本発明の硬化性組成物の硬化物は、耐熱性及び接着性により優れるものとなる。
(D)成分を含有する硬化性組成物は、塗布工程における作業性により優れ、かつ、接着性、耐剥離性、及び耐熱性により優れる硬化物を与える。
Rdは、メチル基、エチル基、n-プロピル基、イソプロピル基、n-ブチル基、t-ブチル基等の炭素数1~6のアルキル基;又は、フェニル基、4-クロロフェニル基、4-メチルフェニル基等の、置換基を有する、又は置換基を有さないアリール基;を表す。
Reの炭素数1~10の有機基の具体例としては、N-2-(アミノエチル)-3-アミノプロピル基、3-アミノプロピル基、N-(1,3-ジメチル-ブチリデン)アミノプロピル基、3-ウレイドプロピル基、N-フェニル-アミノプロピル基等が挙げられる。
ケイ素原子に結合したアルコキシ基を4以上有するとは、同一のケイ素原子に結合したアルコキシ基と、異なるケイ素原子に結合したアルコキシ基との総合計数が4以上という意味である。
t1~t5はそれぞれ独立して、1~10の整数を表し、1~6の整数であるのが好ましく、3であるのが特に好ましい。
1,3,5,-N-トリス(3-ジトキシメチルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジメトキシエチルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジメトキシi-プロピルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジメトキシn-プロピルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジメトキシフェニルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジエトキシメチルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジエトキシエチルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジエトキシi-プロピルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジエトキシn-プロピルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジエトキシフェニルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジi-プロポキシメチルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジi-プロポキシエチルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジi-プロポキシi-プロピルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジi-プロポキシn-プロピルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジi-プロポキシフェニルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジブトキシメチルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジブトキシエチルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジブトキシi-プロピルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジブトキシn-プロピルシリルプロピル)イソシアヌレート、1,3,5,-N-トリス(3-ジブトキシフェニルシリルプロピル)イソシアヌレート等の1,3,5-N-トリス〔(ジ(炭素数1~6)アルコキシ)シリル(炭素数1~10)アルキル〕イソシアヌレート;等が挙げられる。
N,N’-ビス(3-ジメトキシメチルシリルプロピル)ウレア、N,N’-ビス(3-ジメトキシエチルシリルプロピル)ウレア、N,N’-ビス(3-ジエトキシメチルシリルプロピル)ウレア等のN,N’-ビス〔(ジ(炭素数1~6)アルコキシ(炭素数1~6)アルキルシリル(炭素数1~10)アルキル)ウレア;
N,N’-ビス(3-ジメトキシフェニルシリルプロピル)ウレア、N,N’-ビス(3-ジエトキシフェニルシリルプロピル)ウレア等のN,N’-ビス〔(ジ(炭素数1~6)アルコキシ(炭素数6~20)アリールシリル(炭素数1~10)アルキル)ウレア;等が挙げられる。
シランカップリング剤(D)は、1種単独で、あるいは2種以上を組み合わせて用いることができる。
このような割合で(A)成分及び(D)成分を含有する硬化性組成物の硬化物は、耐熱性及び接着性により優れたものになる。
(E)成分を含有する硬化性組成物は、塗布工程における作業性により優れ、かつ、接着性、耐剥離性、及び耐熱性により優れる硬化物を与える。
硫黄原子含有官能基としては、チオール基(-SH);アシルチオ基(-S-CO-R’);スルフィド基(-S-);ジスルフィド基(-S-S-)、テトラスルフィド基(-S-S-S-S-)等のポリスルフィド基〔-(S)n-〕;等が挙げられる。
Y1、Y2としては、炭素数1~6のアルコキシ基がより好ましい。
炭素数2~20のアルケニレン基としては、ビニレン基、プロペニレン基、ブテニレン基、ペンテニレン基等が挙げられる。
炭素数2~20のアルキニレン基としては、エチニレン基、プロピニレン基等が挙げられる。
炭素数6~20のアリーレン基としては、o-フェニレン基、m-フェニレン基、p-フェニレン基、2,6-ナフチレン基等が挙げられる。
これらの置換基は、アルキレン基、アルケニレン基、アルキニレン基及びアリーレン基等の基において任意の位置に結合していてよく、同一若しくは相異なって複数個が結合していてもよい。
R’の置換基を有するフェニル基の置換基としては、メチル基、エチル基、n-プロピル基、イソプロピル基、n-ブチル基、s-ブチル基、イソブチル基、t-ブチル基、n-ペンチル基、n-ヘキシル基等のアルキル基;フッ素原子、塩素原子、臭素原子等のハロゲン原子;メトキシ基、エトキシ基等のアルコキシ基;が挙げられる。
R’としては、炭素数1~20のアルキル基が好ましく、炭素数1~10のアルキル基がより好ましい。
vは、1~4の整数を表し、1、2又は4が好ましく、2又は4がより好ましい。
シランカップリング剤(E)は、1種単独で、あるいは2種以上を組み合わせて用いることができる。
このような割合で(A)成分及び(E)成分を含有する硬化性組成物の硬化物は、耐熱性及び接着性により優れたものになる。
本発明の硬化性組成物は、希釈剤を含有してもよい。
希釈剤は、本発明の硬化性組成物に流動性をもたせる目的で使用される。
希釈剤としては、例えば、ジエチレングリコールモノブチルエーテルアセテート、グリセリンジグリシジルエーテル、ブタンジオールジグリシジルエーテル、ジグリシジルアニリン、ネオペンチルグリコールグリシジルエーテル、シクロヘキサンジメタノールジグリシジルエーテル、アルキレンジグリシジルエーテル、ポリグリコールジグリシジルエーテル、ポリプロピレングリコールジグリシジルエーテル、トリメチロールプロパントリグリシジルエーテル、グリセリントリグリシジルエーテル、4-ビニルシクロヘキセンモノオキサイド、ビニルシクロヘキセンジオキサイド、メチル化ビニルシクロヘキセンジオキサイド等が挙げられる。
これらの希釈剤は1種単独で、あるいは2種以上を組み合わせて用いることができる。
希釈剤の使用量は、本発明の硬化性組成物の固形分濃度を50~100質量%とするのが好ましく、60~90質量%とするのがより好ましく、70~85質量%とするのがさらに好ましい。
また、本発明の硬化性組成物が希釈剤を含有する場合、(A)成分、(B)成分及び(C)成分の合計量が、硬化性組成物の希釈剤を除いた成分全体に対して、50~100質量%であることが好ましく、60~100質量%であることがより好ましい。(A)成分、(B)成分及び(C)成分の合計量が、上記範囲内であることで、本発明の硬化性組成物の硬化物は、耐熱性及び接着性により優れるものとなる。
本発明の硬化性組成物には、本発明の目的を阻害しない範囲で、上記成分に、さらに他の成分を含有させてもよい。
他の成分としては、酸化防止剤、紫外線吸収剤、光安定剤等が挙げられる。
紫外線吸収剤としては、サリチル酸類、ベンゾフェノン類、ベンゾトリアゾール類、ヒンダードアミン類等が挙げられる。
紫外線吸収剤は一種単独で、あるいは二種以上を組み合わせて用いることができる。
紫外線吸収剤の使用量は、(A)成分に対して、通常、10質量%以下である。
光安定剤としては、例えば、ポリ[{6-(1,1,3,3,-テトラメチルブチル)アミノ-1,3,5-トリアジン-2,4-ジイル}{(2,2,6,6-テトラメチル-4-ピペリジン)イミノ}ヘキサメチレン{(2,2,6,6-テトラメチル-4-ピペリジン)イミノ}]等のヒンダードアミン類等が挙げられる。
これらの光安定剤は一種単独で、あるいは二種以上を組み合わせて用いることができる。
これらの他の成分の総使用量は、(A)成分に対して、通常、20質量%以下である。
混合方法、脱泡方法は特に限定されず、公知の方法を利用することができる。
このような本発明の硬化性組成物は、塗布工程における作業性に優れるものである。
すなわち、本発明の硬化性組成物を吐出管から吐出し、次いで吐出管を引き上げた場合、糸引き量が少ないか、又はすぐに途切れるものである。したがって、本発明の硬化性組成物を用いた場合、樹脂飛びにより、周囲が汚染されることがない。
また、本発明の硬化性組成物は、塗布後に液滴が広がることにより、周囲が汚染されることもない。
したがって、本発明の硬化性組成物は、光学部品や成形体の原料、接着剤、コーティング剤等として好適に使用される。特に、光素子の高輝度化に伴う、光素子固定材の劣化に関する問題を解決することができることから、本発明の硬化性組成物は、光素子固定用組成物として好適に使用することができる。
本発明の硬化物は、本発明の硬化性組成物を硬化させて得られるものである。
本発明の硬化性組成物を硬化させる方法としては加熱硬化が挙げられる。硬化させるときの加熱温度は、通常、100~200℃であり、加熱時間は、通常10分から20時間、好ましくは30分から10時間である。
したがって、本発明の硬化物は、光素子の高輝度化に伴う劣化に関する問題を解決し得る光素子固定材として好適に使用することができる。
硬化物の接着力は、23℃において60N/2mm□以上であることが好ましく、80N/2mm□以上であることがより好ましく、100N/2mm□以上であることが特に好ましい。また硬化物の接着力は、100℃において40N/2mm□以上であることが好ましく、50N/2mm□以上であることがより好ましく、60N/2mm□以上であることが特に好ましい。
本発明の方法は、本発明の硬化性組成物を、光素子固定材用接着剤又は光素子用固定材用封止材として使用する方法である。
光素子としては、LED、LD等の発光素子、受光素子、複合光素子、光集積回路等が挙げられる。
本発明の硬化性組成物は、光素子固定材用接着剤として好適に使用することができる。
本発明の硬化性組成物を光素子固定材用接着剤として使用する方法としては、接着の対象とする材料(光素子とその基板等)の一方又は両方の接着面に該組成物を塗布し、圧着した後、加熱硬化させ、接着の対象とする材料同士を強固に接着させる方法が挙げられる。
本発明の硬化性組成物は、光素子固定材用封止材として好適に用いることができる。
本発明の硬化性組成物を光素子固定材用封止材として使用する方法としては、例えば、該組成物を所望の形状に成形して、光素子を内包した成形体を得た後、そのものを加熱硬化させることにより、光素子封止体を製造する方法等が挙げられる。
本発明の硬化性組成物を所望の形状に成形する方法としては、特に限定されるものではなく、通常のトランスファー成形法や、注型法等の公知のモールド法を採用できる。
本発明の光デバイスは、本発明の硬化性組成物を、光素子固定材用接着剤又は光素子固定材用封止材として用いたものである。
光素子としては、LED、LD等の発光素子、受光素子、複合光素子、光集積回路等が挙げられる。
本発明の光デバイスは、本発明の硬化性組成物を、光素子固定材用接着剤又は光素子固定材用封止材として、光素子を固定して得られるものである。そのため、光素子が高い接着力で固定された、耐久性に優れたものとなっている。
製造例1で得たシラン化合物重合体の質量平均分子量(Mw)及び数平均分子量(Mn)は、標準ポリスチレン換算値とし、以下の装置及び条件にて測定した。
装置名:HLC-8220GPC、東ソー社製
カラム:TSKgelGMHXL、TSKgelGMHXL、及び、TSKgel2000HXLを順次連結したもの
溶媒:テトラヒドロフラン
注入量:80μl
測定温度:40℃
流速:1ml/分
検出器:示差屈折計
製造例1で得たシラン化合物重合体のIRスペクトルは、フーリエ変換赤外分光光度計(パーキンエルマー社製、Spectrum100)を使用して測定した。
300mlのナス型フラスコに、メチルトリエトキシシラン(信越化学工業社製、製品名:KBE-13)71.37g(400mmol)を仕込んだ後、蒸留水21.6mlに35%塩酸0.10g(シラン化合物の合計量に対して0.25mol%)を溶解させた水溶液を撹拌しながら加え、全容を30℃にて2時間、次いで70℃に昇温して5時間撹拌したのち、酢酸プロピルを140g加えた。ここに、28%アンモニア水0.12g(シラン化合物の合計量に対して0.5mol%)を、全容を撹拌しながら加え、70℃に昇温して3時間さらに撹拌した。反応液に精製水を加え、分液し、水層のpHが7になるまでこの操作を繰り返した。有機層をエバポレーターで濃縮し、濃縮物を真空乾燥することにより、シラン化合物重合体(A1)を55.7g得た。このものの質量平均分子量(MW)は7800、分子量分布(Mw/Mn)は4.52であった。
シラン化合物重合体(A1)のIRスペクトルデータを以下に示す。
Si-CH3:1272cm-1,1409cm-1,Si-O:1132cm-1
(A成分)
シラン化合物重合体(A1):製造例1で得られた硬化性ポリシルセスキオキサン化合物
(B成分)
微粒子(B1):シリカ微粒子(日本アエロジル社製、製品名:AEROSIL 200、平均一次粒子径:12nm、比表面積:200m2/g)
微粒子(B2):シリカ微粒子(日本アエロジル社製、製品名:AEROSIL 300、平均一次粒子径:7nm、比表面積:300m2/g)
微粒子(B3):シリカ微粒子(日本アエロジル社製、製品名:AEROSIL NX90、平均一次粒子径:20nm、比表面積:65m2/g)
微粒子(B4):シリカ微粒子(日本アエロジル社製、製品名:AEROSIL RX200、平均一次粒子径:12nm、比表面積:140m2/g)
微粒子(B5):シリカ微粒子(日本アエロジル社製、製品名:AEROSIL RX300、平均一次粒子径:7nm、比表面積:210m2/g)
微粒子(B6):シリカ微粒子(日本アエロジル社製、製品名:AEROSIL RY300、平均一次粒子径:7nm、比表面積:125m2/g)
微粒子(B7):シリカ微粒子(日本アエロジル社製、製品名:AEROSIL R974、平均一次粒子径:12nm、比表面積:170m2/g)
微粒子(B8):シリカ微粒子(日本アエロジル社製、製品名:AEROSIL R805、平均一次粒子径:12nm、比表面積:150m2/g)
微粒子(B9):シリカ微粒子(トクヤマ社製、製品名:シルフィル NSS-5N、平均一次粒子径70nm)
シランカップリング剤(C1):3-(トリメトキシシリル)プロピルコハク酸無水物(信越化学社製、製品名:X-12-967C)
(D成分)
シランカップリング剤(D1):1,3,5-N-トリス〔3-(トリメトキシシリル)プロピル〕イソシアヌレート(信越化学社製、製品名:KBM-9659)
(E成分)
シランカップリング剤(E1):3-メルカプトプロピルトリメトキシシラン(信越化学社製、製品名:KBM-803)
シランカップリング剤(E2):3-トリメトキシシリルプロピルスルファニルトリエトキシシラン(信越化学社製、製品名:X-12-1056ES)
シランカップリング剤(E3):メトキシ基含有オリゴマー(メルカプト当量:450g/mol)(信越化学社製、製品名:X-41-1810)
シラン化合物重合体(A1)100部に、微粒子(B1)15部、シランカップリング剤(C1)1部を加え、さらに、E型粘度計を用いて25℃、200s-1の条件で測定したときの粘度が4.3Pa・sになるように、ジエチレングリコールモノブチルエーテルアセテートを添加し、全容を十分に混合、脱泡することにより、硬化性組成物を得た。
第1表~第4表に記載の組成及び粘度に変更したことを除き、実施例1と同様にして、硬化性組成物を得た。
2mm角のシリコンチップのミラー面に、硬化性組成物を、それぞれ、厚さが約2μmになるよう塗布し、塗布面を被着体(銀メッキ銅板)の上に載せ圧着した。その後、170℃で2時間加熱処理して硬化させて試験片付被着体を得た。この試験片付被着体を、予め所定温度(23℃、100℃)に加熱したボンドテスター(デイジ社製、シリーズ4000)の測定ステージ上に30秒間放置し、被着体から50μmの高さの位置より、スピード200μm/sで接着面に対し水平方法(せん断方向)に応力をかけ、23℃及び100℃における、試験片と被着体との接着強度(N/2mm□)を測定した。
LEDリードフレーム(エノモト社製、製品名:5050 D/G PKG LEADFRAME)に、硬化性組成物を、0.4mmφ程度塗布した上に、0.5mm角のサファイアチップを圧着した。その後、170℃で2時間加熱処理して硬化させた後、封止材(信越化学工業社製、製品名:EG6301)をカップ内に流し込み、150℃で1時間加熱して試験片を得た。
この試験片を85℃、85%RHの環境に168時間曝したのち、プレヒート160℃で、最高温度が260℃になる加熱時間1分間のIRリフロー(リフロー炉:相模理工社製、製品名「WL-15-20DNX型」)にて処理を行った。その後、熱サイクル試験機にて、-40℃及び+100℃で各30分放置する試験を1サイクルとして、300サイクル実施した。その後、封止材を除去する操作を行い、その際に素子が一緒に剥がれるか否かを調べた。この試験を、各硬化性組成物につきそれぞれ複数回(例えば、実施例1では12回)行った。
下記表中に、素子が一緒に剥がれた回数(NG数)を示す。また、剥離発生率〔NG率=(NG数/総数)×100〕を算出し、これが25%以下であれば「A」、25%より大きく50%以下であれば「B」、50%より大きければ「C」と評価した。
硬化性組成物をシリンジに充填し、脱泡した後、ディスペンサ(武蔵エンジニアリング社製、製品名:SHOTMASTER300)にてニードル外径0.56mm、ニードル内径0.31mm、ニードル長8mmのニードルを用い、吐出圧300kPa、吐出時間150~400m秒の条件で1mmφ程度塗布し、ニードルを離したときの糸引き高さを測定した。
糸引き高さが高い硬化性組成物は、樹脂飛びによる周囲の汚染を引き起こすおそれがある一方で、塗布液滴は広がり難いという傾向がある。
硬化性組成物をシリンジに充填し、脱泡した後、ディスペンサ(武蔵エンジニアリング社製、製品名:SHOTMASTER300)にてニードル外径0.56mm、ニードル内径0.31mm、ニードル長8mmのニードルを用い、吐出圧300kPa、吐出時間150~400m秒の条件で1mmφ程度塗布した。
塗布直後と30分後の塗布液の形状の変化の有無をデジタル顕微鏡(キーエンス社製、製品名「デジタルマイクロスコープVHX-1000」)で確認し、以下の基準で、硬化性組成物の角(塗布液滴中央部の盛り上がった部分)の消え易さを評価した。
A:角がほぼ消えた。
B:角が少し消えた。
C:角が全く消えなかった。
角が消えにくく、かつ、糸引き高さが高い硬化性組成物は、樹脂飛びが生じやすい傾向がある。
硬化性組成物をシリンジに充填し、脱泡した後、ディスペンサ(武蔵エンジニアリング社製 製品名:SHOTMASTER300)にて、ニードル外径0.56mm、ニードル内径0.31mm、ニードル長8mmのニードルを用い、吐出圧300kPa、吐出時間150~400m秒の条件で1mmφ程度、連続して塗布した。このとき、樹脂飛び(次の塗布地点まで硬化性組成物が垂れる現象)が生じ、周辺を汚染するか否かを、以下の基準で評価した。
A:糸がすぐに切れ、周辺を汚染しない。
B:糸がニードルの移動中に切れ、周辺を汚染しない。
F:糸が切れず、樹脂飛びにより周辺を汚染した。
硬化性組成物をシリンジに充填・脱泡した後、ディスペンサ(武蔵エンジニアリング社製 製品名:SHOTMASTER300)にてニードル外径0.56mm、ニードル内径0.31mm、ニードル長8mmのニードルを用い、吐出圧300kPa、吐出時間150~400m秒の条件で0.4mmφ程度塗布した。塗布直後と30分後の塗布液の液滴の大きさをデジタル顕微鏡(キーエンス社製、製品名:デジタルマイクロスコープVHX-1000)で観察し、以下の基準で、硬化性組成物のぬれ広がり難さを評価した。
A:液滴の大きさはほとんど変化しなかった。
F:ぬれ広がり、液滴の大きさが大きくなった。
実施例1~110の硬化性組成物は、塗布時の作業性に優れ、かつ、接着性、耐剥離性、耐熱性に優れる硬化物を与える。
一方、微粒子を含まない比較例1の硬化性組成物は、塗布時の作業性に劣り、また、得られる硬化物は、接着性、耐剥離性、耐熱性に劣っている。
また、平均一次粒子径が大きい微粒子を含有する比較例8の硬化性組成物も塗布時の作業性に劣っている。
また、(C)成分を含まない比較例2~7の硬化性組成物を用いて得られる硬化物は、接着性、耐剥離性、耐熱性に劣っている。
Claims (14)
- 前記(A)成分の硬化性ポリシルセスキオキサン化合物の質量平均分子量(Mw)が800~30,000である、請求項1に記載の硬化性組成物。
- 前記(B)成分が、シリカ、金属酸化物、及び鉱物からなる群から選ばれる少なくとも1種の微粒子である請求項1に記載の硬化性組成物。
- 前記(C)成分を、(A)成分と(C)成分の質量比で、〔(A)成分:(C)成分〕=100:0.01~100:30の割合で含有する、請求項1に記載の硬化性組成物。
- さらに、希釈剤を含有する請求項1に記載の硬化性組成物。
- 前記(A)成分、(B)成分および(C)成分の合計量が、硬化性組成物の希釈剤を除いた成分全体に対して、50~100質量%である、請求項6に記載の硬化性組成物。
- 前記硬化性組成物の固形分濃度が、50質量%以上、100質量%未満である、請求項6に記載の硬化性組成物。
- 請求項1に記載の硬化性組成物を硬化させて得られる硬化物。
- 光素子固定材である請求項10に記載の硬化物。
- 請求項1に記載の硬化性組成物を、光素子固定材用接着剤として使用する方法。
- 請求項1に記載の硬化性組成物を、光素子固定材用封止材として使用する方法。
- 請求項1に記載の硬化性組成物を、光素子固定材用接着剤又は光素子固定材用封止材として用いてなる光デバイス。
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| US15/506,669 US10774249B2 (en) | 2014-08-26 | 2015-08-21 | Curable composition, method for producing curable composition, cured object, method for using curable composition, and optical device |
| JP2016541445A JP6151457B2 (ja) | 2014-08-26 | 2015-08-21 | 硬化性組成物、硬化性組成物の製造方法、硬化物、硬化性組成物の使用方法、及び光デバイス |
| CN201580045768.3A CN106574117B (zh) | 2014-08-26 | 2015-08-21 | 固化性组合物、固化性组合物的制备方法、固化物、固化性组合物的使用方法和光器件 |
| EP15836835.7A EP3187546B1 (en) | 2014-08-26 | 2015-08-21 | Curable composition, method of producing curable composition, cured material, method of using curable composition, and optical device |
| MYPI2017700630A MY183187A (en) | 2014-08-26 | 2015-08-21 | Curable composition, method for producing curable composition, cured object, method for using curable composition, and optical device |
| KR1020177004294A KR102354543B1 (ko) | 2014-08-26 | 2015-08-21 | 경화성 조성물, 경화성 조성물의 제조 방법, 경화물, 경화성 조성물의 사용 방법, 및 광 디바이스 |
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| EP (1) | EP3187546B1 (ja) |
| JP (1) | JP6151457B2 (ja) |
| KR (1) | KR102354543B1 (ja) |
| CN (1) | CN106574117B (ja) |
| MY (1) | MY183187A (ja) |
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| US20190300710A1 (en) * | 2015-12-22 | 2019-10-03 | Lintec Corporation | Curable composition, method for producing curable composition, cured product, and use of curable composition |
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| CN109661434A (zh) * | 2016-09-07 | 2019-04-19 | 住友化学株式会社 | 含有波长转换材料的聚硅氧烷树脂组合物及含有波长转换材料的片材 |
| WO2020196705A1 (ja) * | 2019-03-26 | 2020-10-01 | リンテック株式会社 | 硬化性組成物、硬化物、及び、硬化性組成物の使用方法 |
| CN114402036B (zh) * | 2019-09-27 | 2023-11-21 | 琳得科株式会社 | 固化性组合物、固化物和固化性组合物的使用方法 |
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| Publication number | Publication date |
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| US10774249B2 (en) | 2020-09-15 |
| JPWO2016031729A1 (ja) | 2017-04-27 |
| TW201609871A (zh) | 2016-03-16 |
| EP3187546A1 (en) | 2017-07-05 |
| KR20170045212A (ko) | 2017-04-26 |
| KR102354543B1 (ko) | 2022-01-21 |
| US20170253782A1 (en) | 2017-09-07 |
| CN106574117A (zh) | 2017-04-19 |
| EP3187546B1 (en) | 2022-07-13 |
| EP3187546A4 (en) | 2018-04-25 |
| CN106574117B (zh) | 2020-07-14 |
| JP6151457B2 (ja) | 2017-06-21 |
| TWI678387B (zh) | 2019-12-01 |
| MY183187A (en) | 2021-02-18 |
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