WO2007046399A1 - 熱硬化性樹脂組成物及び光半導体封止材 - Google Patents
熱硬化性樹脂組成物及び光半導体封止材 Download PDFInfo
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- WO2007046399A1 WO2007046399A1 PCT/JP2006/320711 JP2006320711W WO2007046399A1 WO 2007046399 A1 WO2007046399 A1 WO 2007046399A1 JP 2006320711 W JP2006320711 W JP 2006320711W WO 2007046399 A1 WO2007046399 A1 WO 2007046399A1
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Definitions
- the present invention relates to a thermosetting resin composition, a resin composition for optical semiconductors, and an optical semiconductor device. More specifically, a tough hardened material with high transparency, heat resistance, thermal shock resistance, and adhesion can be obtained.In particular, it has excellent adhesion, heat resistance and moisture resistance to semiconductor elements and lead frames, and there is no cure shrinkage.
- a resin composition for optical semiconductors such as a thermosetting resin composition suitable for optical semiconductors, an optical semiconductor encapsulant using the thermosetting resin composition, and a die bonding paste. And an optical semiconductor device using the sealing material.
- an epoxy resin composition using an acid anhydride curing agent that gives a transparent cured product is suitable as a sealing material for an optical semiconductor element such as a light emitting diode or a photodiode.
- Japanese Patent No. 2760889 proposes an amino group-containing silicone
- Japanese Patent No. 2796187 discloses the addition of a spherical silicon force without cracks. Proposed. With this technology, adhesion to optical semiconductors and lead frames is reduced, causing peeling and immediately causing a decrease in moisture resistance. It ’s a satisfactory result.
- JP-A-10-182826 discloses a composition for use as a release paper in which a specific organopolysiloxane is blended.
- the cured product and optical semiconductor use are disclosed. The use of is not disclosed.
- a photoinitiator is blended and UV-cured, it does not always give a cured product that satisfies the transparency, light resistance, heat resistance, and mechanical properties.
- thermosetting resin composition that is excellent in light resistance and heat resistance and has excellent strength and adhesion to an optical semiconductor, a lead frame and a housing material is desired.
- the object of the present invention is excellent in adhesion, heat resistance, and light resistance, and has a curing shrinkage force and low stress, so that a cured product having excellent mechanical properties can be obtained and used suitably for an optical semiconductor. It is to provide a cured resin for optical semiconductors such as a thermosetting resin composition, an optical semiconductor encapsulating material, and a die bond material, and an optical semiconductor device using the cured product.
- thermosetting resin composition containing a specific organopolysiloxane
- present invention provides a thermosetting resin composition as described below, a resin composition for optical semiconductors and an optical semiconductor device using the same.
- thermosetting resin composition of the present invention comprises (A) a compound represented by the following general formula (1) and an organopolysiloxane containing a compound represented by Z or the general formula (2),
- R 1 is independently a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms
- R 2 is an epoxy group-containing organic group
- R 3 is R 1 or R 2
- a is independently An integer greater than or equal to 2
- b independently represents an integer greater than or equal to 0.
- X is a group represented by the general formula (3)
- R 1 is independently a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms, c is an integer of 0 or more, n is 0 or 1, and d is 0 or more.
- Q is a group represented by the general formula (5)
- P may contain an O bond, an ether bond or an ester bond.
- P is a methyl group, a trimethylsilyl group, or a structure represented by the following formulas (6), (7) Either Indicate. )
- thermosetting resin composition of the present invention d in the formula (4) is preferably 0
- thermosetting resin composition of the present invention (A) 100 weight of organopolysiloxane containing the compound represented by the general formula (1) and Z or the compound represented by the general formula (2) Parts (B) acid anhydride 10 to 200 parts by weight, (C) curing accelerator 0 to: L0 parts by weight are preferably essential components.
- the acid anhydride power of component (B) at least selected from the group consisting of methylhexahydrophthalic anhydride, hexahydrophthalic anhydride and methylnadic acid anhydride One is preferable.
- the curing accelerator of the component (C) comprises an imidazole compound, a quaternary ammonium salt, a phosphonium salt, and an organic phosphine compound. It is preferably at least one selected from the group.
- thermosetting resin composition of the present invention the organopolysiloxane of component (A) 10
- (D) the cationic polymerization catalyst are 0.01 to 10 parts by weight as essential components.
- thermosetting resin composition of the present invention (D) the cationic polymerization catalyst has a thermosetting power. It is preferable to be a thione polymerization catalyst.
- the epoxy value of the organopolysiloxane as the component (A) is preferably 0.050 (equivalent ZlOOg) or more and 0.5500 or less.
- thermosetting resin composition of the present invention a in the general formulas (1) and (2) is preferably 2 or more and 10 or less.
- thermosetting resin composition of the present invention Y in the general formula (3) is preferably a divalent hydrocarbon group having 1 to 4 carbon atoms.
- R 2 is a group represented by the following general formula (8).
- R 4 represents a divalent hydrocarbon group having 1 to 10 carbon atoms
- the weight average molecular weight of the organopolysiloxane as component (A) is preferably 700 or more and 500,000 or less.
- thermosetting resin composition of the present invention (E) one or more alcoholic compounds per molecule with respect to 100 parts by weight of the organopolysiloxane of component (A)
- the compound having a hydroxyl group preferably contains 0.1 to 50 parts by weight.
- thermosetting resin composition of the present invention preferably comprises (F) a filler having an average particle size of 500 nanometers or less.
- the optical semiconductor encapsulant of the present invention is characterized by curing the thermosetting resin composition.
- the die bond material for optical semiconductors of the present invention is characterized by hardening the above thermosetting resin composition.
- R 1 in the general formulas (1) and (2) each independently represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms. If R 1 has 10 or fewer carbon atoms, heat resistance And light resistance.
- the above viewpoints are preferably methyl group, ethyl group, propyl group, butyl group, isobutyl group, tertiary butyl group, pentyl group, neopentyl group, hexyl group, cyclopentyl group, cyclohexyl.
- Alkyl groups such as octyl groups; aryl groups such as phenyl groups and tolyl groups; alkenyl groups such as vinyl groups and aryl groups, and some or all of these hydrogen atoms are halogen atoms such as fluorine And an unsubstituted or substituted monovalent hydrocarbon group substituted with a glycidyl group, a methacryl group, an acrylic group, a mercapto group, an amino group or the like.
- a methyl group and a phenyl group are more preferable because of their high heat resistance and light resistance, and a methyl group is particularly preferable because of their particularly excellent light resistance.
- R 2 represents an epoxy group-containing organic group, and the following structures are exemplified. Among these, those represented by the general formula (8) are more preferable in view of the high heat resistance of the resin obtained by curing the highly stable component A organopolysiloxane.
- R 4 in the general formulas (8) to (11) represents a divalent hydrocarbon group having 1 to 10 carbon atoms.
- the carbon number of R 4 is 10 or less from the viewpoint of heat resistance and light resistance.
- Examples of R 4 structures that also have such a viewpoint power are (CH) 1, (CH) 1, (CH) 1, (CH) 1, (CH) 1, (CH)
- preferred R 2 structures include 3 glycidoxypropyl group, 2— (3 ′, 4 ′ epoxycyclohexyl) ethyl group, 3- (2′-hydroxyethoxy) propyl group
- the 2- (3 ′, 4 ′ epoxycyclohexyl) ethyl group is particularly preferred because it gives a stable compound at room temperature, and the cured product exhibits high heat resistance. .
- R 3 represents R 1 or R 2 and a methyl group or 2- (3, 4, -epoxycyclohexyl) ethyl group is a balance between the viscosity of the organopolysiloxane and the heat resistance of the cured product. More preferable in terms
- a in the general formulas (1) and (2) each independently represents an integer of 2 or more, and is preferably 2 to 20 from the balance between the viscosity of the organopolysiloxane and the heat resistance of the cured product. Preferably from 2 to 10, more preferably from 2 to 5, with 3 being most preferred.
- b in the general formulas (1) and (2) each independently represents an integer of 0 or more. From the viewpoint that the smaller b is, the better the balance of mechanical strength such as heat resistance, light resistance, glass transition temperature, adhesion, etc. of the cured product, the preferable range of b is 0 or more and 20 or less, more preferably 0 or more. It is 10 or less, more preferably 0 or more and 5 or less, and most preferably 0.
- X in the general formulas (1) and (2) is a group represented by the following general formula (3).
- Y in the general formula (3) represents ⁇ or a divalent hydrocarbon group having 1 to 6 carbon atoms, and one (CH) one, (CH) one, (CH) one, (CH) one, (CH) I, (CH)
- Examples are 2 2 2 2 2 3 2 4 2 5 2 6, -CH (CH) CH, -C (CH), and the like.
- Y is divalent having 1 to 4 carbon atoms
- a cured product that is easy to manufacture, has little coloration, and has excellent light resistance and thermal shock resistance.
- the point force given is also more preferable-(CH)-is most preferable.
- ⁇ represents the structure of the following general formula (4).
- R 1 in the formula (4) independently represents a substituted or unsubstituted monovalent hydrocarbon group having 1 to 10 carbon atoms.
- the carbon number of R 1 is 10 or less from the viewpoint of heat resistance and light resistance.
- Preferred R 1 is an alkyl group such as a methyl group, an ethyl group, a propyl group, a butyl group, an isobutyl group, a tertiary butyl group, a pentyl group, a neopentyl group, a hexyl group, a cyclopentyl group, a cyclohexyl group, or an octyl group.
- Aryl groups such as fulleryl and tolyl groups
- alkenyl groups such as beryl and aryl groups
- methyl groups and phenyl groups have higher heat resistance and light resistance
- Methyl group is most preferred in terms of excellent light resistance.
- c represents an integer of 0 or more.
- the preferred range of c is from 0 to 100, more preferably from 0 to 50, even more preferably from 1 to 40, and most preferably from 1 to 30.
- n in the general formula (4) represents 0 or 1, and is preferably 1 from the viewpoint that the effects of the present invention can be remarkably exhibited.
- d in the general formula (4) represents an integer of 0 or more, from the viewpoint that the viscosity of the resin composition becomes low, and from the viewpoint that the toughness and adhesion of the cured product is increased. A smaller value is more preferable.
- Q in the general formula (4) is represented by the general formula (5).
- ⁇ - ⁇ P in the general formula (5) may contain an —O bond, an ether bond or an ester bond.
- Carbon number 1 to: Indicates a divalent hydrocarbon group of L0 or a substituted or unsubstituted dimethylsiloxy group. Specific examples of these are:
- P in the general formula (5) represents a structure of any one of a methyl group, a trimethylsilyl group, and the formulas (6) and (7), and has a viewpoint power that the effect of the present invention can be remarkably exhibited It is the structure of (6).
- RR 2 , R 3 , a, b in the formula are the same as in the formula (1) and formula (2).
- the component (A) is an organopolysiloxane containing a compound represented by the general formulas (1) and Z or the general formula (2).
- this organopolysiloxane sites where epoxy groups are present at a relatively high concentration; that is, sites other than X in general formulas (1) and (2), and sites where epoxy groups are present at a relatively low concentration or where no epoxy groups exist. X exists in the same molecule. For this reason, the site where the epoxy group is present at a relatively high concentration contributes to the development of mechanical strength and thermal characteristics.
- the X part shows a more flexible structure, cure shrinkage It is small and absorbs internal stress, and as a result, it plays a role of developing excellent adhesion and thermal shock. Furthermore, the introduction of the X site suppresses the concentration of epoxy groups that do not necessarily contribute to light resistance, and thus has the effect of exhibiting excellent light resistance.
- the compound represented by the general formula (1) is particularly preferable because the effect of the present invention is more remarkably exhibited. More specifically, when comparing the resin represented by the general formula (1) and the general formula (2), the resin represented by the general formula (1) Excellent characteristics in terms of glass transition temperature (Tg), thermal shock resistance, adhesion, and solder heat resistance.
- Tg glass transition temperature
- the component (A) in the present invention is not particularly limited in terms of its weight average molecular weight, but is preferably 700 or more and 500,000 or less. Light resistance is excellent when the weight average molecular weight is 700 or more. From this point of view, the range of more preferable weight average molecular weight is 1000 or more and 100000 or less, more preferably ⁇ is 1000 or more and 20000 or less, more preferably ⁇ is 1 000 or more and 10000 or less, and most preferably 1000 or more and 5000 or less. .
- the weight average molecular weight of component (A) is defined by the weight average molecular weight in GPC measurement.
- the epoxy value of the component (A) in the present invention is preferably not less than 0.050 (equivalent ZlOOg) in terms of heat resistance and not more than 0.50 (equivalent ZlOOg) in terms of light resistance. From this point of view, a more preferable epoxy value is 0.100 (equivalent ZlOOg) or more and 0.450 (equivalent / 100 g) or less, most preferably 0.150 (equivalent / 100 g) or more and 0.400 (equivalent Z100 g). is there.
- the content of the compound represented by the general formula (1) or (2) contained in the origanopolysiloxane as the component (A) is 0.01% or more and 100% or less on a mass basis. It is desirable to be.
- a more preferable content of the compound represented by the general formula (1) or (2) is 0.1% to 90%, more preferably 5% to 60%, and most preferably 10% to 50%.
- thermosetting resin composition of the present invention preferably comprises (A) a component, (B) an acid anhydride, and (C) a curing accelerator as required.
- a cured product obtained by curing with an acid anhydride tends to give a cured product having a high glass transition temperature and excellent adhesion and thermal shock.
- acid anhydrides that can be used as component (B) include hexahydric phthalic anhydride, tetrahydrophthalic anhydride, methylhexahydrophthalic anhydride, methyltetrahydro Examples include colorless to light yellow acid anhydrides such as phthalic anhydride, methyl nadic anhydride, phthalic anhydride, trimellitic anhydride, pyromellitic anhydride, and succinic anhydride, either alone or in combination of two or more. Can be used. Among these, methylhexahydrophthalic anhydride, hexahydrophthalic anhydride, and methylnadic acid anhydride are particularly preferable in terms of light resistance and heat resistance.
- the amount of acid anhydride is particularly preferably 0.2 to 5 equivalents relative to the epoxy group of component (A). A range of 5 to 2 equivalents is preferred.
- the amount of acid anhydride is preferably 10 to 200 parts by weight per 100 parts by weight of component (A), more preferably 10 to: LOO parts by weight, most preferably 20 to 80 parts by weight. .
- Curing accelerators that can be used as the component (C) in the present invention include imidazole compounds, quaternary ammonium salts, phosphonium salts, ammine compounds, aluminum chelate compounds, organic compounds. Examples include phosphine compounds. Of these, imidazole compounds, quaternary ammonium salts, phosphonium salts, organic phosphine compounds, and the like are preferred because they tend to give hardened materials with little coloration.
- 2-methylimidazole, 2-ethyl-4-methylimidazole, 1,8-diazabicyclo (5, 4, 0) undecene-1 trimethylamine, benzyldimethylamine, triethylamine , Dimethylbenzylamine, 2,4,6 trisdimethylaminomethylphenol and other amine compounds and their salts, tetramethylammonium chloride, benzyltrimethylammonium bromide, quaternary ammonia such as tetraptylammonium bromide Organic salts, aluminum chelates, tetra- n -butylphospho-mubenzotriazolate, tetra-n-butylphosphonium 0,0-jetylphosphorodithioate, etc., chromium (III) tricarboxylate , Tin octylate, and acetylylacetonate Cr.
- U-CAT SA1, U-CAT 2026, U-CAT 18X, etc. can be suitably used from Sanpro.
- curing accelerators are blended in an amount of 0 part by weight or more, with respect to 100 parts by weight of component (A). From the viewpoint of safety, the content is preferably 10 parts by weight or less. A more preferable range of 0.01 to 5 parts by weight or more from the viewpoint of reactivity is 0.01 to 5 parts by weight, and a most preferable range is 0.01 to 1 part by weight.
- thermosetting resin composition of the present invention can also be obtained by blending (D) a cationic polymerization catalyst.
- cationic polymerization catalysts include BF 'amine complexes,
- Lewis acid catalyst such as PF, BF, AsF, SbF, phosphonium salt, etc.
- thermosetting cationic polymerization catalysts such as n-molybdenum salts, diaryldosium hexafluorophosphate, and hexafluoroantimonate bis (dodecylphenol) odonneum.
- ultraviolet curable cationic polymerization catalyst is preferred because it provides a transparent cured product with a high glass transition temperature and excellent solder heat resistance and adhesion with little coloration.
- thermosetting cationic polymerization catalysts include sulfo-um salt, benzyl ammonium salt, benzyl pyridinium salt, benzyl sulfo-um salt, hydrazide-um salt, and carboxylic acid.
- examples include esters, sulfonic acid esters, and amine amines. Sulfo-um salt and benzylsulfo-um salt have a uniform, high glass transition temperature and tend to give a cured product.
- Examples of the structure of the sulfo-um salt include formula (12) and formula (13).
- X represents PF, SbF or AsF.
- R represents hydrogen, an alkyl group having 1 to 12 carbon atoms, or an alcohol having 1 to 12 carbon atoms.
- X— represents PF—, SbF— or AsF—.
- R to R are each independently hydrogen, an alkyl group having 1 to 12 carbon atoms, or carbon.
- X— represents PF—, SbF—, AsF—.
- An example of the structure of the benzylpyridium salt includes the formula (16).
- R to R are each independently hydrogen or an alkyl group having 1 to 12 carbon atoms, or
- each R is independently hydrogen, an alkyl group having 1 to 12 carbon atoms, or Represents an alkoxy group of 1 to 12, and X— represents PF—, SbF— or AsF—.
- cationic polymerization catalyst Commercially available products can also be used as the cationic polymerization catalyst.
- Commercially available products include, for example, sulfo-um salt-based cationic polymerization initiators SI-100L, SI-60L (manufactured by Sanshin Kagaku Kogyo), CP-66, CP-77 (above, Asahi Denki) And the like).
- examples of the ultraviolet curable cationic polymerization catalyst include bis (dodecylphenyl) odonium hexafluoroantimonate.
- the amount of the cationic polymerization catalyst is 0.001 to 10 parts by weight of the cationic polymerization catalyst with respect to 100 parts by weight of the (A) organopolysiloxane. It is preferable to mix.
- the blending amount of the polymerization catalyst is more preferably 0.001 to 1 part by weight, most preferably 0.01 to 0.1 part by weight based on 100 parts by weight of the organopolysiloxane (A).
- the adhesion can be enhanced by blending (E) a compound having one or more alcoholic hydroxyl groups in one molecule with the thermosetting resin composition of the present invention.
- a compound having one or more alcoholic hydroxyl groups in one molecule include monovalent alcoholol such as pentyl alcohol, butanol and octanol, ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, ethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol, Examples include dihydric alcohols such as octanediol, butanediol, hexanediol, and neopentyl glycol, and trihydric or higher alcohols such as glycerin, erythritol, trimethylolpropane, and 1,2,4-butanetriol. Of these, ethylene glycol, polyethylene glycol, triethylene glycol, propylene glycol,
- the compounding amount of the compound having one or more alcoholic hydroxyl groups in one molecule is 0.1 from the viewpoint of improving adhesion with respect to 100 parts by weight of the organopolysiloxane as the component (A). It is desirable that the amount is not less than 50 parts by weight from the viewpoint of heat resistance and moisture resistance. A more preferable blending amount is 1 to 30 parts by weight, more preferably 3 to 20 parts by weight, most preferably The amount is preferably 5 to 10 parts by weight.
- the compound in which d is 0 in the formula (4) is an organopolysiloxane having an unsaturated hydrocarbon group at both ends or an organopolysiloxane having a hydroxyl group at both ends.
- Siloxane, organohydropolysiloxane, and a compound containing an epoxy group and a alkenyl group in the same molecule can be used as raw materials.
- organopolysiloxane having an unsaturated hydrocarbon group at both ends include the following.
- organopolysiloxane having hydroxyl groups at both ends include the following.
- organopolysiloxanes having unsaturated hydrocarbon groups at both ends and organopolysiloxanes having hydroxyl groups at both ends may be used alone or in combination of two or more.
- organohydropolysiloxane those represented by the following general formula (18) or (19) can be used.
- Rl, a and b are the same as described above.
- R 11 represents R 1 or a hydrogen atom.
- organohydropolysiloxane examples include those represented by the following formulas (20) to (26).
- the organohydropolysiloxane may be a mixture of two or more, or may be used alone.
- Examples of the epoxy group of the compound containing an epoxy group and an alkenyl group in the same molecule include structures represented by the general formulas (8) to (11).
- Examples of the alkenyl group include those having 2 to 8 carbon atoms such as beryl group, aryl group, propenyl group and butyr group.
- Examples of such a compound include 4 butylcyclohexene oxide, 4 isopropyl group 1-methylcyclohexene oxide, allyl glycidyl ether, 1,5 hexagen monooxide, glycidyl (meth) acrylate. Can be mentioned.
- the compound in which d in the formula (4) is an integer of 1 or more has, for example, unsaturated hydrocarbon groups at both ends, Organopolysiloxane in which part or all of the dimethylsiloxy groups are substituted with unsaturated hydrocarbon groups, or both ends
- a compound containing as a raw material can be produced by Hyde port Saireshiyon reaction using, for example, a p t based catalyst.
- the compound in which d in formula (4) is an integer of 1 or more has, for example, silanol groups at both ends and dimethyl in the chain.
- the alkenyl group of the compound containing an epoxy group and an alkenyl group in the same molecule and the remaining SiH group are further converted using, for example, a Pt-based catalyst. It can be manufactured by addition reaction.
- organopolysiloxane having silanol groups at both ends and partially or all of dimethylsiloxy groups in the chain substituted with hydroxyl groups and organohydropolysiloxane, and epoxy groups and alkene groups in the same molecule.
- a Pt-based or Sn-based catalyst may be used as a raw material to combine a dehydrogenation reaction and a hydose silageation reaction.
- organohydropolysiloxane and a compound containing an epoxy group and an alkenyl group in the same molecule can also be produced by subjecting organohydropolysiloxane and a compound containing an epoxy group and an alkenyl group in the same molecule to a raw material silicidation reaction using, for example, a Pt catalyst.
- the organopolysiloxane of component (A) of the present invention is a compound having a part of SiH groups contained in the organohydropolysiloxane (i) and an epoxy group and an alkenyl group in one molecule (ii) Addition reaction with alkenyl group in it, and unsaturated bond in organopolysiloxane (m) with unsaturated bond such as bur group at both ends and part of SiH group also contained in (i) And an addition reaction between the two.
- the compound (ii) containing a group and the organopolysiloxane (m) having an unsaturated bond such as a vinyl group at both ends are used in (ii) and (m) with respect to the SiH group contained in (i).
- the ratio of the number of moles of the total butyl group contained is between 0.8 / 1.0 and 1.2 / 1.0.
- the above molar ratio is 0.8 / 1.0 or more from the viewpoint of light resistance and heat resistance, and is 1.2 / 1.0 or less from the viewpoint of stability of viscosity, heat resistance of cured products, and strength. It is preferable.
- the above monole iti or 1.0 is desirable, more preferably 9.5 or more, and it is 0.95 / 1.0 to 1.05 / 1.0.
- the use ratio of the compound (ii) having an epoxy group and an alkenyl group in one molecule and the organopolysiloxane (m) having an unsaturated bond such as a vinyl group at both ends is particularly limited.
- the molar ratio of the butyl group contained is preferably 1 to 100 or more, and from the viewpoint of light resistance, it is preferably 100 to 1 or less.
- a more desirable range is 95: 5 to 20:80, more preferably 90:10 to 40:60, and most preferably 80:20 force is also 50:50.
- organohydropolysiloxane (i) a compound (ii) containing an epoxy group and an alkenyl group in one molecule, and an organopolysiloxane (iii) having an unsaturated bond such as a vinyl group at both ends;
- GO and Gii may be added at the same time, and either (ii) or (iii) may be added first and reacted in advance. In this case, if (ii) is reacted first, the viscosity of the resulting organopolysiloxane tends to be low, and if (iii) is reacted first, a less colored organopolysiloxane tends to be obtained.
- a catalyst is preferably used in order to advance the reaction more rapidly.
- Catalysts include chloroplatinic acid, alcohol solution of chloroplatinic acid, reaction product of chloroplatinic acid and alcohol, reaction product of chloroplatinic acid and olefinic compound, reaction of chloroplatinic acid and vinyl group-containing siloxane.
- Platinum-based catalysts such as products.
- organohydropolysiloxane (i) a compound containing an epoxy group and an alkenyl group in one molecule ( ⁇ ), and vinyl groups at both ends are not limited. 0. ⁇ to 5% by weight of the total weight of organopolysiloxane (m) with saturated bonds Is preferred.
- the amount of the catalyst added is preferably 0.0001% by weight or more from the viewpoint of obtaining the effect of addition, and 5% by weight or less from the viewpoint of light resistance of the resulting cured organohydropolysiloxane.
- the above addition reaction usually proceeds quickly at a force of 30 ° C or higher, which can be carried out at room temperature to 300 ° C. In addition, it is preferable to react at 120 ° C. or lower because an organohydropolysiloxane having less coloring can be obtained.
- the reaction time is not particularly limited, but is preferably 1 to 50 hours.
- the reaction is preferably carried out in a solvent as necessary because the viscosity of the resulting organopolysiloxane is reduced.
- Solvents include aromatic solvents such as toluene and xylene, aliphatic solvents such as hexane and octane, ketone solvents such as methyl ethyl ketone and methyl isobutyl ketone, and ester solvents such as ethyl acetate and isobutyl acetate.
- ether-based solvents such as ethylene glycol noremethino enoate, ethylene glycol eno chineno ethenore, propylene glycol monomethyl ether acetate, isopropanol, etc.
- Alcohol solvents or mixed solvents thereof can be used, and dioxane is particularly preferred because it tends to cause the reaction to proceed rapidly.
- the reaction atmosphere may be either in air or in an inert gas, but is preferably in an inert gas such as nitrogen, argon or helium because the resulting organohydropolysiloxane is less colored. .
- the addition reaction catalyst can be removed from the reaction mixture by a general method such as water washing or activated carbon treatment.
- a general method such as water washing or activated carbon treatment.
- the organosiloxane as component (A) can be obtained by heating and distilling off under Z or reduced pressure.
- the organopolysiloxane of the component (A) of the present invention thus obtained can be produced industrially by a reaction involving a sequential polymerization reaction, and therefore is usually represented by the general formula (1).
- the compound use it as an addition product of organohydropolysiloxane (i) and compound (ii) containing an epoxy group and an alkenyl group in one molecule, or as a mixture containing the following sequential polymers. Can do.
- organopolysiloxane of component (A) containing the compound of formula (27) can be obtained.
- (A) The component organopolysiloxane generally includes a sequential polymer represented by the formulas (29) and (30) to (31) or a branched compound.
- the content of the compound represented by the general formula (1) or (2) contained in the origanopolysiloxane as the component (A) is 0.01% or more and 100% or less on a mass basis. It is desirable. A more preferable content of the compound represented by the general formula (1) or (2) is 0.1% or more. It is 90% or less, more preferably 5% or more and 60%, and particularly preferably 10% or more and 50% or less.
- the organopolysiloxane of component (A) of the present invention comprises an SiOH group of an organopolysiloxane (iv) having OH groups at both ends and a SiH group contained in the organohydropolysiloxane (i).
- a dehydrogenative condensation reaction between a part of the compound, an unsaturated bond of compound (ii) containing an epoxy group and an alkenyl group in one molecule, and a part of SiH group contained in organohydropolysiloxane (i) It can also be obtained by combining the addition reaction between the two.
- the use ratio of the organopolysiloxane (iv) having OH groups at both ends, the organohydropolysiloxane (i), and the compound (ii) containing an epoxy group and an alkenyl group in one molecule The specific power of the total number of moles of the SiH group contained in (i), the bur group contained in (ii), and the OH group contained in (iv) 0.8 / 1.0 to 1.2 Desirably between /1.0.
- the above molar ratio is preferably 0.8 / 1.0 or more from the viewpoint of heat resistance and light resistance, and 1.2 / 1.0 or less from the viewpoint of viscosity stability, heat resistance of the cured product, and strength. preferable.
- the above molar ratio is 1.0 or more, preferably about 0.0, or 1.0 to 1.05 / 1.
- the proportion of the compound (ii) containing an epoxy group and an alkenyl group in one molecule and the organopolysiloxane (iv) having OH groups at both ends is not particularly limited.
- the molar ratio of the bur group contained in (ii) and the OH group contained in (iv) is preferably 1 to 100 or more, and from the viewpoint of light resistance, it is preferably 100 to 1 or less.
- a more desirable range of the molar ratio is between 90:10 forces 20:80, more preferably between 85:15 and 45:55, most preferably between 80:20 forces and 60:40.
- the dehydrocondensation reaction product of the organopolysiloxane having OH groups at both ends and the organohydropolysiloxane may be isolated and purified from the reaction mixture. Reaction at this isolation and purification stage By treating the mixture with an adsorbent such as activated carbon, the dehydrogenative condensation catalyst can be removed. When a solvent is used, it can be distilled off by heating and under z or reduced pressure.
- a catalyst can be used in the dehydration condensation reaction.
- the catalyst include chloroplatinic acid, an alcohol solution of chloroplatinic acid, a reaction product of chloroplatinic acid and alcohol, a reaction product of chloroplatinic acid and an olefin compound, and a reaction of chloroplatinic acid and a vinyl group-containing siloxane. It is possible to use platinum-based catalysts such as products and Sn-based catalysts such as dibutyltin laurate.
- the amount of the catalyst, it is preferred at both ends is from 0.0005 to 5 weight 0/0 of the total weight of the the organopolysiloxane and organohydropolysiloxane having an OH group .
- This reaction can usually be performed at room temperature to 300 ° C. In this case, the reaction proceeds faster when heated to 50 ° C or higher.
- the reaction time is not particularly limited, but is preferably 1 to 10 hours.
- solvents include aromatic solvents such as toluene and xylene, aliphatic solvents such as hexane and octane, ketone solvents such as methyl ethyl ketone and methyl isobutyl ketone, and ester solvents such as ethyl acetate and isobutyl acetate.
- ether solvents such as propylene glycol monomethyl ether acetate, alcohols such as isopropanol
- a system solvent or a mixed solvent thereof can be used.
- thermosetting resin composition of the present invention can be blended with an organic resin for the purpose of further providing adhesion, flexibility and the like.
- organic resin include epoxy resin, acrylic resin, polyester resin, and polyimide resin.
- epoxy resin is preferred because it preferably has a group capable of reacting with other components.
- the epoxy resin include bis A type epoxy resin, bis F type epoxy resin, hydrogenated epoxy resin, 3, 4 epoxy cyclohexyl methyl-3,4-epoxy cyclohexane carboxylate, and the like.
- the organic resin can be used within a range that does not impair the object of the present invention, and the blending amount thereof is usually 0 to 80 parts by mass, preferably 0 to 30 parts per 100 parts by mass of the component (A). Parts by mass.
- thermosetting resin composition of the present invention includes a dye, a deterioration inhibitor, a mold release agent, a diluent, an antioxidant, a silane cup within a quantitative quality range that does not depart from the scope of the present invention.
- Additives such as a ring agent, a heat stabilizer, a flame retardant, a plasticizer, and a surfactant can be blended.
- the thermosetting resin composition of the present invention includes an inorganic acid as needed for the purpose of improving heat resistance, light resistance, hardness, conductivity, thermal conductivity, thixotropy, and low thermal expansion. It is possible to join the fillers represented by the goods.
- fillers examples include silica (fumed silica, colloidal silica, precipitated silica, etc.), inorganic oxides or inorganic nitrides such as silicon nitride, boron nitride, alumina, and titer, glass. , Ceramics, silver powder, gold powder, copper powder and the like.
- fillers can be used in a state where they are surface-treated, and if they are surface-treated, the fluidity of the composition increases or the filling rate increases. This is industrially preferable.
- thermosetting resin composition comprising these compounds usually has a liquid form
- thermosetting resin composition of the present invention can be cured by heating to 250 ° C. Further, when the thermosetting resin composition of the present invention is solid, it can be molded by heating and curing under pressure using a press machine, a low-pressure transfer molding machine or the like. [Oil 1]
- the resin composition obtained in this way can be used as a sealing material for optical semiconductor devices, a die bonding paste and a die bond material obtained by curing the paste, a chip coating material that covers the periphery of a chip, a lens material, etc. It can be suitably used for optical semiconductor device applications.
- the resin composition of the present invention uses its heat resistance and high transparency, and is used for spectacle lenses, optical device lenses, CD and DVD pickup lenses, automotive headlamp lenses, and projectors. It is also suitably used for various optical members such as lens materials such as lenses, optical fibers, optical waveguides, optical filters, optical adhesives, optical disk substrates, display substrates, antireflection coatings and other coating materials.
- lens materials such as lenses, optical fibers, optical waveguides, optical filters, optical adhesives, optical disk substrates, display substrates, antireflection coatings and other coating materials.
- the resin composition of the present invention gives a cured product having almost no discoloration and excellent transparency, particularly in the resin encapsulation of optical semiconductor elements. Even in the low temperature range of 80 to 150 ° C, by increasing the amount of added force of component (C), it can be cured in a short time of about 30 to 60 minutes and can be released from the mold. This cured product is a transparent product with no discoloration, and even when post-cured at 180 ° C. or lower, it does not change color, and exhibits excellent transparency.
- the present invention is not particularly limited to the method of curing and molding the resin composition, and for example, it can be molded by casting, low-pressure transfer molding, potting, dating, pressure molding, injection molding, or the like.
- thermosetting resin composition of the present invention is suitably used as an optical semiconductor encapsulant.
- the optical semiconductor includes an LED lamp, a chip LED, a semiconductor laser, a photopower bra, and a photodiode. And so on.
- Housing materials for semiconductor devices are not limited, but examples include aromatic polyamides such as polyphthalamide, engineering plastics such as 66 nylon, and ceramics. Polyphthalamide exhibits particularly high adhesion. Is done.
- the adhesive strength is increased, and the preferred content is 5%.
- the force is 40%, preferably 10% to 30%, particularly preferably 15% to 25%. The effect of the present invention is remarkably exhibited when
- Epoxy value (equivalent Z lOOg) (V X N X F) / (10 XW)
- N Normality of hydrochloric acid used for titration
- the detector uses an RI detector, and calculates the weight average molecular weight using polystyrene and styrene monomer (molecular weight 104) of Easy Cal PS-2 (molecular weight distribution 580-3 77400) manufactured by Polymer Laboratories as standard substances.
- the progress of the reaction can be confirmed by absorption of SiH (2160cm _1) in the FT- IR.
- a resin composition is poured into a polyphtalamide (Solvaine soil model 4122) resin mold with a recess of 5 mm ⁇ 1 mm deep in the center of a 20 mm * 20 mm * 2 mm flat plate, heat cured, and the test piece is create.
- the obtained specimen is subjected to a thermal cycle test in a cycle from room temperature to 40 ° C. to 100 ° C. to room temperature in a cold cycle test and visually observed.
- the evaluation is based on the number of occurrences of peeling between the cured resin and the polyphthalamide resin. The higher the number, the better the adhesion.
- a group III nitride compound semiconductor light-emitting device including an InGaN layer is supported using a cup-shaped housing material made of polyphthalamide (Solvay, Model 4122, containing 22% glass fiber). It is mounted on a fire substrate, potted with a resin composition, and then heat-molded to produce a surface-mounted LED with an emission peak wavelength of 380 nm. The LED was allowed to emit light at 85 ° C for 1000 hours, and the sealing resin was visually observed. The case where no coloration was observed was marked as ⁇ , the case where it was colored as X, and the case where it was lightly colored as ⁇ . A case where the initial state was not changed at all was marked as ⁇ .
- the epoxy value of Sample 1 was 0.300 (equivalent / 100 g), and the weight average molecular weight was 2700 as measured by GPC.
- the resulting polysiloxane had a viscosity of 280 OmPas at 25 ° C, and the viscosity after storage for 1 month at 25 ° C was 2820 mPas, indicating excellent storage stability.
- the epoxy value of Sample 2 was 0.260 (equivalent ZlOOg), and the weight average molecular weight was 2200 as measured by GPC.
- the resulting polysiloxane had a viscosity of 2600 mPas, and its viscosity after storage for 1 month at 25 ° C was 2610 mPas, indicating excellent storage stability.
- toluene 300 parts
- dimethyl having a molecular weight of 758 with OH groups at both ends represented by the following average composition formula (IV)
- Polysiloxane 95 parts, OH group: 0.25 mol
- 1, 3, 5, 7-tetramethylcyclotetrasiloxane 60 parts, SiH group: 1 mol
- the epoxy value of Sample 3 was 0.300, and the weight average molecular weight was 2300.
- the resulting polysiloxane has a viscosity of 3800 mPas, and its viscosity after storage for 1 month at 25 ° C is 4 It was 020 mPas and showed practical storage stability.
- the epoxy value of Sample 4 was 0.230 (equivalent ZlOOg), and the weight average molecular weight was 5200 as measured by GPC.
- the resulting polysiloxane had a viscosity of 15000 mPas, and its viscosity after storage for 1 month at 25 ° C. was 18000 mPas.
- dioxane 120 parts
- 1, 3, 5, 7-tetramethylcyclotetrasiloxane 60 parts, SiH: 1 mol
- a 0.1% dioxane solution 2.8 parts
- dibutyltetramethyldisiloxane having a molecular weight of 186 28 parts, 0.3% Mol
- dioxane solution 267 parts
- the epoxy value of Sample 5 was 0.390 (equivalent Zl00g), and the weight average molecular weight was 1300 as measured by GPC.
- the viscosity of the resulting polysiloxane at 25 ° C was 12
- the viscosity after storage for 1 month at 25 ° C was 1820 mPas, indicating excellent storage stability.
- the epoxy value of Sample 6 was 0.295 (equivalent / 100 g), and the weight average molecular weight was 2900 as measured by GPC.
- the viscosity of the obtained polysiloxane at 25 ° C was 340 OmPas, and the viscosity after storage at 25 ° C for 1 month was 4900 mPas.
- a resin composition was prepared at the ratio shown in Table 1. This resin composition was cast into a mold and cured at 120 ° C. X lhr, then 150 ° C. X 2 hr, and further at 170 ° C. X 2 hr to obtain a molded product. Table 2 shows the evaluation results of the cured resin obtained by curing and the LED.
- thermosetting cationic polymerization catalyst (Adeka Obtomer C P-66, Asahi Denka Co., Structural Formula (32)) 0.1 part are mixed uniformly and heat-cured at 180 ° C for 5 hours. At this time, Tg is 80 ° C., light resistance is 94%, solder heat resistance is 100%, and LED durability is S96%.
- Example 2 To 400 parts of a 10% by weight toluene solution of colloidal silica particles having an average particle size of 15 nanometers, 60 parts of the resin composition blended in Example 1 was added and mixed uniformly, and the resulting resin composition solution was made into glass. Apply to the substrate to a thickness of 100 microns at room temperature. The obtained coating film is cured at 120 ° C. X 1 hr, then at 150 ° C. X 2 hr, and further at 170 ° C. X 2 hr to obtain a cured coating film. Perform a light resistance test for each glass substrate! ⁇ Get 92% result.
- a cured coating film is obtained in the same manner as in Example 2 except that 100 parts of sample 6 is used. At this time, Tg is 168 ° C, thermal shock resistance is 150 times, adhesion is 120 times, light resistance is 78%, solder heat resistance is 90%, and LED durability is 83%.
- a resin composition was prepared using an organopolysiloxane (sample name: EE, weight average molecular weight 2300, epoxy value 0.480) having the following structure different from the component (A) in the present invention. It was cured and evaluated in the same manner as ⁇ 5. Table 2 shows the evaluation results of cured resin and LED obtained by curing.
- organopolysiloxane sample name: EE, weight average molecular weight 2300, epoxy value 0.480
- Me HHP A Methylhexahydrophthalanol anhydride (acid equivalent: 168)
- thermosetting resin composition of the present invention As can be seen from Table 2, the cured resin and LED (Example 16) obtained by curing the thermosetting resin composition according to the present invention are all excellent in adhesion, heat resistance, and light resistance. However, it was transparent and excellent in mechanical properties. On the other hand, the cured resin and LED of Comparative Example (Comparative Example 13) did not satisfy all of the above characteristics. [0155] Thus, according to the thermosetting resin composition of the present invention, it is excellent in adhesion, heat resistance, light resistance, curing shrinkage force, and low stress, so it is represented by thermal shock resistance. A transparent cured product having excellent mechanical properties can be obtained. Further, the thermosetting resin composition of the present invention has a low viscosity and excellent workability and storage stability.
- thermosetting resin composition of the present invention is excellent in adhesion to semiconductor elements and lead frames, heat resistance and moisture resistance, and provides a low stress cured product without curing shrinkage. Therefore, a light emitting diode is a photodiode.
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Abstract
Description
Claims
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| Application Number | Priority Date | Filing Date | Title |
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| JP2007540996A JP4322949B2 (ja) | 2005-10-18 | 2006-10-18 | 熱硬化性樹脂組成物及び光半導体封止材 |
| US12/083,864 US7932319B2 (en) | 2005-10-18 | 2006-10-18 | Thermosetting resin composition and semiconductor sealing medium |
| EP06821913.8A EP1947128B1 (en) | 2005-10-18 | 2006-10-18 | Thermosetting resin composition and photosemiconductor encapsulation material |
| CN2006800387056A CN101291973B (zh) | 2005-10-18 | 2006-10-18 | 热固性树脂组合物和光半导体密封材料 |
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| EP (2) | EP1947128B1 (ja) |
| JP (1) | JP4322949B2 (ja) |
| KR (1) | KR101011421B1 (ja) |
| CN (1) | CN101291973B (ja) |
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| EP2060537A3 (en) * | 2007-11-14 | 2011-01-26 | Niigata University | Siloxane-grafted silica, transparent silicone composition, and optoelectronic device encapsulated therewith |
| KR101574992B1 (ko) | 2007-11-14 | 2015-12-07 | 고쿠리츠다이가쿠호진 니이가타 다이가쿠 | 실록산을 그래프트한 실리카, 투명 실리콘 조성물 및 그 조성물로 밀봉한 광전자 장치 |
| WO2009072632A1 (ja) * | 2007-12-07 | 2009-06-11 | Jsr Corporation | 硬化性組成物、光学素子コーティング用組成物、およびled封止用材料ならびにその製造方法 |
| JPWO2009072632A1 (ja) * | 2007-12-07 | 2011-04-28 | Jsr株式会社 | 硬化性組成物、光学素子コーティング用組成物、およびled封止用材料ならびにその製造方法 |
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| WO2011034322A3 (ko) * | 2009-09-17 | 2011-07-07 | 주식회사 동진쎄미켐 | 발광다이오드의 밀봉 방법 및 이에 의해 밀봉된 발광다이오드 |
| JP2014208826A (ja) * | 2009-11-09 | 2014-11-06 | ダウ コーニング コーポレーションDowcorning Corporation | クラスタ化官能性ポリオルガノシロキサンの調製プロセス、及びそれらの使用方法 |
| JP2016153512A (ja) * | 2009-11-09 | 2016-08-25 | ダウ コーニング コーポレーションDow Corning Corporation | クラスタ化官能性ポリオルガノシロキサンの調製プロセス、及びそれらの使用方法 |
| JP2012041381A (ja) * | 2010-08-12 | 2012-03-01 | Asahi Kasei Chemicals Corp | エポキシ変性シリコーン及びその製造方法、並びに、それを用いた硬化性樹脂組成物とその用途 |
| WO2012133432A1 (ja) * | 2011-03-30 | 2012-10-04 | 旭化成ケミカルズ株式会社 | オルガノポリシロキサン、その製造方法、及びオルガノポリシロキサンを含有する硬化性樹脂組成物 |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN101291973A (zh) | 2008-10-22 |
| JP4322949B2 (ja) | 2009-09-02 |
| US20090258992A1 (en) | 2009-10-15 |
| TW200722456A (en) | 2007-06-16 |
| US7932319B2 (en) | 2011-04-26 |
| TWI373485B (ja) | 2012-10-01 |
| MY145608A (en) | 2012-03-15 |
| EP1947128A1 (en) | 2008-07-23 |
| JPWO2007046399A1 (ja) | 2009-04-23 |
| EP1947128B1 (en) | 2013-10-09 |
| CN101291973B (zh) | 2012-10-17 |
| EP2508545B1 (en) | 2014-06-18 |
| KR20080056305A (ko) | 2008-06-20 |
| KR101011421B1 (ko) | 2011-01-28 |
| EP1947128A4 (en) | 2012-01-04 |
| EP2508545A1 (en) | 2012-10-10 |
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