WO2017081850A1 - 付加硬化型シリコーン樹脂組成物、該組成物の製造方法、及び光学半導体装置 - Google Patents
付加硬化型シリコーン樹脂組成物、該組成物の製造方法、及び光学半導体装置 Download PDFInfo
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- WO2017081850A1 WO2017081850A1 PCT/JP2016/004743 JP2016004743W WO2017081850A1 WO 2017081850 A1 WO2017081850 A1 WO 2017081850A1 JP 2016004743 W JP2016004743 W JP 2016004743W WO 2017081850 A1 WO2017081850 A1 WO 2017081850A1
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- silicone resin
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- 229920002050 silicone resin Polymers 0.000 title claims abstract description 75
- 239000011342 resin composition Substances 0.000 title claims abstract description 63
- 239000000203 mixture Substances 0.000 title claims abstract description 33
- 230000003287 optical effect Effects 0.000 title claims description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 11
- 239000004065 semiconductor Substances 0.000 title claims description 10
- 125000003342 alkenyl group Chemical group 0.000 claims abstract description 36
- 229920001296 polysiloxane Polymers 0.000 claims abstract description 31
- 229910052751 metal Inorganic materials 0.000 claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 13
- 229910052684 Cerium Inorganic materials 0.000 claims abstract description 10
- 239000003054 catalyst Substances 0.000 claims abstract description 10
- 229920006136 organohydrogenpolysiloxane Polymers 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 5
- -1 Rare earth carboxylate Chemical class 0.000 claims description 32
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 19
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 18
- 239000010936 titanium Substances 0.000 claims description 18
- 238000002834 transmittance Methods 0.000 claims description 15
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 12
- 229910004283 SiO 4 Inorganic materials 0.000 claims description 10
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 7
- 125000000217 alkyl group Chemical group 0.000 claims description 7
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 6
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 5
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 125000004429 atom Chemical group 0.000 claims description 4
- 150000003609 titanium compounds Chemical class 0.000 claims description 4
- 230000007062 hydrolysis Effects 0.000 claims description 3
- 238000006460 hydrolysis reaction Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 claims 5
- 230000004580 weight loss Effects 0.000 abstract description 14
- 229910020447 SiO2/2 Inorganic materials 0.000 abstract 3
- 229910020388 SiO1/2 Inorganic materials 0.000 abstract 1
- 229910020487 SiO3/2 Inorganic materials 0.000 abstract 1
- 229910020485 SiO4/2 Inorganic materials 0.000 abstract 1
- 239000000047 product Substances 0.000 description 32
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 18
- 150000002430 hydrocarbons Chemical group 0.000 description 18
- 239000004205 dimethyl polysiloxane Substances 0.000 description 14
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 14
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 14
- 239000007788 liquid Substances 0.000 description 13
- 230000000052 comparative effect Effects 0.000 description 12
- 239000000463 material Substances 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 10
- 238000003786 synthesis reaction Methods 0.000 description 10
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 10
- 125000004432 carbon atom Chemical group C* 0.000 description 9
- 229920001577 copolymer Polymers 0.000 description 9
- 239000007787 solid Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 238000005259 measurement Methods 0.000 description 8
- 239000002253 acid Substances 0.000 description 7
- 238000002156 mixing Methods 0.000 description 7
- 229920001843 polymethylhydrosiloxane Polymers 0.000 description 7
- 239000003566 sealing material Substances 0.000 description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 5
- 239000001257 hydrogen Substances 0.000 description 5
- QYLFHLNFIHBCPR-UHFFFAOYSA-N 1-ethynylcyclohexan-1-ol Chemical compound C#CC1(O)CCCCC1 QYLFHLNFIHBCPR-UHFFFAOYSA-N 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 4
- 125000005388 dimethylhydrogensiloxy group Chemical group 0.000 description 4
- 238000002845 discoloration Methods 0.000 description 4
- 125000003700 epoxy group Chemical group 0.000 description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 4
- 229910052697 platinum Inorganic materials 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
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- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000003431 cross linking reagent Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 239000003822 epoxy resin Substances 0.000 description 3
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 3
- 238000006459 hydrosilylation reaction Methods 0.000 description 3
- 229920000647 polyepoxide Polymers 0.000 description 3
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000007983 Tris buffer Substances 0.000 description 2
- FCCRGBVYSYHQRQ-UHFFFAOYSA-N [ethenyl(dimethyl)silyl]oxy-dimethylsilicon Chemical compound C[Si](C)O[Si](C)(C)C=C FCCRGBVYSYHQRQ-UHFFFAOYSA-N 0.000 description 2
- 238000013006 addition curing Methods 0.000 description 2
- OBETXYAYXDNJHR-UHFFFAOYSA-N alpha-ethylcaproic acid Natural products CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 description 2
- 125000003118 aryl group Chemical group 0.000 description 2
- 125000000484 butyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 2
- 239000007809 chemical reaction catalyst Substances 0.000 description 2
- 229910002026 crystalline silica Inorganic materials 0.000 description 2
- 238000001723 curing Methods 0.000 description 2
- 125000004122 cyclic group Chemical group 0.000 description 2
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 description 2
- 229910021485 fumed silica Inorganic materials 0.000 description 2
- 239000004615 ingredient Substances 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- QBERHIJABFXGRZ-UHFFFAOYSA-M rhodium;triphenylphosphane;chloride Chemical compound [Cl-].[Rh].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 QBERHIJABFXGRZ-UHFFFAOYSA-M 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 150000003505 terpenes Chemical class 0.000 description 2
- 235000007586 terpenes Nutrition 0.000 description 2
- 125000003944 tolyl group Chemical group 0.000 description 2
- OBETXYAYXDNJHR-SSDOTTSWSA-M (2r)-2-ethylhexanoate Chemical compound CCCC[C@@H](CC)C([O-])=O OBETXYAYXDNJHR-SSDOTTSWSA-M 0.000 description 1
- KWEKXPWNFQBJAY-UHFFFAOYSA-N (dimethyl-$l^{3}-silanyl)oxy-dimethylsilicon Chemical compound C[Si](C)O[Si](C)C KWEKXPWNFQBJAY-UHFFFAOYSA-N 0.000 description 1
- WZJUBBHODHNQPW-UHFFFAOYSA-N 2,4,6,8-tetramethyl-1,3,5,7,2$l^{3},4$l^{3},6$l^{3},8$l^{3}-tetraoxatetrasilocane Chemical compound C[Si]1O[Si](C)O[Si](C)O[Si](C)O1 WZJUBBHODHNQPW-UHFFFAOYSA-N 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229910018557 Si O Inorganic materials 0.000 description 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000000149 argon plasma sintering Methods 0.000 description 1
- 125000003710 aryl alkyl group Chemical group 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- SHZIWNPUGXLXDT-UHFFFAOYSA-N caproic acid ethyl ester Natural products CCCCCC(=O)OCC SHZIWNPUGXLXDT-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 125000002704 decyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 125000004051 hexyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- NYMPGSQKHIOWIO-UHFFFAOYSA-N hydroxy(diphenyl)silicon Chemical class C=1C=CC=CC=1[Si](O)C1=CC=CC=C1 NYMPGSQKHIOWIO-UHFFFAOYSA-N 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 239000003446 ligand Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- UIUXUFNYAYAMOE-UHFFFAOYSA-N methylsilane Chemical compound [SiH3]C UIUXUFNYAYAMOE-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000001400 nonyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002347 octyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 125000000286 phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000004344 phenylpropyl group Chemical group 0.000 description 1
- PARWUHTVGZSQPD-UHFFFAOYSA-N phenylsilane Chemical compound [SiH3]C1=CC=CC=C1 PARWUHTVGZSQPD-UHFFFAOYSA-N 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- CLSUSRZJUQMOHH-UHFFFAOYSA-L platinum dichloride Chemical compound Cl[Pt]Cl CLSUSRZJUQMOHH-UHFFFAOYSA-L 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000002683 reaction inhibitor Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- 239000011833 salt mixture Substances 0.000 description 1
- 150000004756 silanes Chemical group 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 239000011995 wilkinson's catalyst Substances 0.000 description 1
- 125000005023 xylyl group Chemical group 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- 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
- C08G77/12—Polysiloxanes containing silicon bound to hydrogen
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/52—Encapsulations
- H01L33/56—Materials, e.g. epoxy or silicone resin
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- 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
- C08G77/06—Preparatory processes
- C08G77/08—Preparatory processes characterised by the catalysts used
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- 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
- C08G77/20—Polysiloxanes containing silicon bound to unsaturated aliphatic groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08L83/14—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 in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
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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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- 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
- H01L23/31—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
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/84—Passivation; Containers; Encapsulations
- H10K50/842—Containers
- H10K50/8426—Peripheral sealing arrangements, e.g. adhesives, sealants
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/40—Organosilicon compounds, e.g. TIPS pentacene
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- 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
- C08G77/48—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 in which at least two but not all the silicon atoms are connected by linkages other than oxygen atoms
- C08G77/58—Metal-containing linkages
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- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
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- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
- C08L2203/206—Applications use in electrical or conductive gadgets use in coating or encapsulating of electronic parts
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- C08L2314/00—Polymer mixtures characterised by way of preparation
- C08L2314/08—Polymer mixtures characterised by way of preparation prepared by late transition metal, i.e. Ni, Pd, Pt, Co, Rh, Ir, Fe, Ru or Os, single site catalyst
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2933/00—Details relating to devices covered by the group H01L33/00 but not provided for in its subgroups
- H01L2933/0008—Processes
- H01L2933/0033—Processes relating to semiconductor body packages
- H01L2933/005—Processes relating to semiconductor body packages relating to encapsulations
Definitions
- the present invention relates to an addition-curable silicone resin composition suitable for optical applications such as a light-emitting diode (LED) element sealing material, a method for producing the composition, and an optical semiconductor device using the composition as a sealing material. .
- LED light-emitting diode
- An epoxy resin is generally used as a sealing material for LED elements, but it has been proposed to use a silicone resin as a sealing material instead of an epoxy resin (Patent Documents 1 to 3). Silicone resins are used mainly for blue LEDs and white LEDs because they are superior in heat resistance, weather resistance, and discoloration resistance to epoxy resins.
- an organopolysiloxane, a cerium carboxylate, and a titanium compound or zirconia compound have been heat-treated at a temperature of 150 ° C. or higher.
- a heat-resistant organopolysiloxane composition (Patent Document 4) containing the reaction product obtained as an additive and a silicone gel composition (Patent Document 5) containing the same additive have been reported.
- Patent Document 4 A heat-resistant organopolysiloxane composition containing the reaction product obtained as an additive
- a silicone gel composition (Patent Document 5) containing the same additive have been reported.
- Patent Document 4 containing the reaction product obtained as an additive
- a silicone gel composition Patent Document 5
- what is described in these patent documents is not an addition-curable silicone resin composition that gives a cured product having rubber hardness, and therefore can be used for applications such as the above-described sealing material for LED elements. It was not a thing.
- Patent Document 6 reports a heat-resistant silicone rubber composition containing a rare earth salt mixture of 2-ethylhexanoic acid, and a total light transmittance at a wavelength of 600 nm of a sheet having a thickness of 2 mm is 90% or more. It has been reported. However, this heat-resistant silicone rubber composition has a problem that light transmittance of short-wavelength light in the vicinity of a wavelength of 400 nm is inferior.
- the present invention has been made to solve the above-described problems, and provides an addition-curable silicone resin composition that provides a cured product that is excellent in transparency and has a low hardness change and a small weight loss under high-temperature conditions. Objective.
- the present invention provides an addition-curable silicone resin composition, (A) an organopolysiloxane having two or more alkenyl groups bonded to silicon atoms in one molecule and having a viscosity at 25 ° C. of 50 to 100,000 mPa ⁇ s, (B) Organopolysiloxane represented by the following average composition formula (1) and having a viscosity at 25 ° C.
- Such an addition-curable silicone resin composition is an addition-curable silicone resin composition that gives a cured product that is excellent in transparency and has little hardness change and weight loss under high-temperature conditions.
- the addition-curable silicone resin composition has a total light transmittance of 80% or more at a wavelength of 400 nm of a sheet having a thickness of 2 mm of a cured product of the composition, and the cured product is stored at 250 ° C. for 500 hours. It is preferable that the weight loss rate is 10% or less.
- Such an addition-curable silicone resin composition provides a cured product having transparency and heat resistance particularly suitable for LED applications.
- the above-mentioned addition-curable silicone resin composition is produced by mixing the components (a) to (e), As the component (e), (I) Organopolysiloxane having a viscosity of 10 to 10,000 mPa ⁇ s at 25 ° C .: 100 parts by mass (Ii) Rare earth carboxylate containing cerium carboxylate represented by the following general formula (e-1): The mass of cerium is 0.05 to 5 parts by mass with respect to 100 parts by mass of component (i).
- a polyorganometallosiloxane having a predetermined Ce content and Ti content (that is, the component (e)) can be easily synthesized.
- the resin composition can be easily produced.
- the present invention also provides an optical semiconductor device in which a light-emitting diode is sealed with the above addition-curable silicone resin composition.
- the light-emitting diode is sealed with the addition-curable silicone resin composition of the present invention that provides a cured product that is excellent in transparency as described above and has a low hardness change and low weight loss under high temperature conditions. Therefore, the optical semiconductor device is excellent in reliability under high temperature conditions.
- the addition-curable silicone resin composition of the present invention is excellent in transparency and heat discoloration, has an appropriate rubber hardness, has little hardness change and weight loss under high temperature conditions, and cracks. It becomes an addition-curable silicone resin composition that gives a cured product with good resistance. Therefore, the addition-curable silicone resin composition of the present invention is a material for protecting / sealing LED elements, a material for changing / adjusting wavelengths, a material for lenses, and other materials for optical devices or optical components. As particularly useful.
- the present inventors can achieve the above-described problems and can be suitably used as an LED material or the like as long as it is an addition-curable silicone resin composition containing the following components (a) to (e): As a result, the present invention was completed.
- the present invention is an addition-curable silicone resin composition that contains the following components (a) to (e) and is cured by heating.
- (A) Organopolysiloxane having two or more alkenyl groups bonded to silicon atoms in one molecule and having a viscosity of 50 to 100,000 mPa ⁇ s at 25 ° C.
- (b) Expressed by the following average composition formula (1) And an organopolysiloxane whose viscosity at 25 ° C. is a liquid or solid having a viscosity of 1,000 Pa ⁇ s or higher: the component (b) is less than 0 part by mass with respect to a total of 100 parts by mass of the component (a) and the component (b).
- R 1 is a monovalent hydrocarbon group which may contain an alkenyl group
- R 2 is a monovalent hydrocarbon group which does not contain an alkenyl group, and 80% or more of all R 2 are methyl groups
- R 3 is a hydrogen atom or an alkyl group
- component (c) Component and the amount of SiH bonds in component (c) 0.5 to 5.0 times the total number of alkenyl groups in component (b) and component (b) R 4 a H b SiO (4-a -B) / 2 ...
- R 4 is a monovalent hydrocarbon group not containing an alkenyl group, and 50% or more of all R 4 is a methyl group; a and b are 0.7 ⁇ a ⁇ 2.1, It is a number that satisfies 0.001 ⁇ b ⁇ 1.0 and 0.8 ⁇ a + b ⁇ 3.0.
- Platinum group metal catalyst an amount of 1 to 500 ppm in terms of mass of metal atoms with respect to the total of the components (a) to (c) (e) Si—O—Ce bond, and Si—O A polyorganometallosiloxane having a Ti bond, a Ce content of 50 to 5,000 ppm, a Ti content of 50 to 5,000 ppm and a viscosity at 25 ° C. of 10 to 10,000 mPa ⁇ s: 0.01 to 5 parts by mass with respect to 100 parts by mass in total of components a) to (d)
- Me represents a methyl group
- Vi represents a vinyl group
- Component (a) is an organopolysiloxane having two or more alkenyl groups bonded to silicon atoms in one molecule and having a viscosity at 25 ° C. of 50 to 100,000 mPa ⁇ s.
- the component (a) is typically a linear organopolysiloxane whose main chain is composed of repeating diorganosiloxane units and whose both molecular chain ends are blocked with triorganosiloxy groups.
- R is preferably a methyl group.
- component (a) include organopolysiloxanes represented by the following formula. ViMe 2 SiO (Me 2 SiO) 20 SiMe 2 Vi ViMe 2 SiO (Me 2 SiO) 90 SiMe 2 Vi ViMe 2 SiO (MeViSiO) 1 (Me 2 SiO) 19 SiMe 2 Vi Me 3 SiO (MeViSiO) 2 (Me 2 SiO) 18 SiMe 3
- the viscosity of the component (a) is 50 to 100,000 mPa ⁇ s at 25 ° C.
- the viscosity of the component (a) exceeds 100,000 mPa ⁇ s, workability at the time of sealing using the addition-curable silicone resin composition of the present invention is deteriorated.
- the viscosity of the component (a) is lower than 50 mPa ⁇ s, the component (a) becomes a low-boiling point material, so that weight loss easily occurs in a high temperature environment.
- the viscosity of component (a) is preferably 1,000 to 50,000 mPa ⁇ s, more preferably 1,000 to 10,000 mPa ⁇ s.
- the component (b) is an organopolysiloxane which is represented by the following average composition formula (1) and is a liquid or solid having a viscosity at 25 ° C. of 1,000 Pa ⁇ s or more.
- the addition-curable silicone resin composition it is a component necessary for imparting reinforcing properties while maintaining colorless transparency.
- R 1 is a monovalent hydrocarbon group which may contain an alkenyl group
- R 2 is a monovalent hydrocarbon group which does not contain an alkenyl group, and 80% or more of all R 2 are methyl groups
- R 3 is a hydrogen atom or an alkyl group
- the component (b) is typically a branched organopolysiloxane having a branched structure such as R 1 SiO 3/2 units or SiO 4/2 units.
- the component (b) is a liquid having a higher viscosity than the component (a) or a solid organopolysiloxane. Since the component (b) may be solid, the upper limit of the viscosity when the component (b) is a liquid is not particularly limited.
- R 1 is a monovalent hydrocarbon group which may contain an alkenyl group, and among them, those having 1 to 12 carbon atoms, particularly 1 to 6 carbon atoms are preferable.
- R 1 include a methyl group, an ethyl group, a propyl group, a butyl group, a cyclohexyl group, a phenyl group, a tolyl group, a vinyl group, and an allyl group.
- R 2 is a monovalent hydrocarbon group not containing an alkenyl group, and among them, those having 1 to 12 carbon atoms, particularly 1 to 6 carbon atoms are preferable.
- R 2 examples include those obtained by removing the alkenyl group from the specific examples of R 1 described above. In addition, 80% or more of all R 2 are methyl groups.
- R 3 is a hydrogen atom or an alkyl group, and the alkyl group preferably has 1 to 6 carbon atoms, particularly 1 to 3 carbon atoms. Specific examples of such R 3 include a methyl group, an ethyl group, and a propyl group.
- the component (b) preferably has an alkenyl group, and the alkenyl group in the component (b) is most preferably a vinyl group from the viewpoint of availability and price.
- the amount of the alkenyl group is preferably in the range of 0.01 to 1 mol / 100 g, more preferably 0.05 to 0.5 mol / 100 g, based on the solid content of the component (b). If the amount of the alkenyl group of the component (b) is 0.01 mol / 100 g or more with respect to the solid content, the component (b) is sufficiently incorporated into the crosslinking, so that the hardness of the cured product does not become too low. .
- the amount of the alkenyl group of the component (b) is 1 mol / 100 g or less based on the solid content, the amount of alkenyl groups in the system does not increase so much, so that the formulation of the component (c) (crosslinking agent) described later
- the blending amount of the component (b) relative to the amount can be made an appropriate amount. Therefore, there is no possibility that the crosslinking does not proceed sufficiently and the desired hardness cannot be obtained or the cured product becomes brittle.
- the ratio of the component (b) to the component (a) is also important, and the blending amount of the component (b) is (b) with respect to a total of 100 parts by mass of the component (a) and the component (b).
- the amount of the component is more than 0 parts by mass and less than 80 parts by mass. Since the hardness of the cured product increases as the blending amount of the component (b) increases, the hardness can be adjusted by changing the blending amount of the component (b) according to the design of the LED or the like. More specifically, for example, when stress relaxation is required for the cured product, the component (b) is more than 0 parts by mass and less than 50 parts by mass with respect to 100 parts by mass in total of the components (a) and (b).
- the amount of the component (b) is 50 parts by mass or more and less than 80 parts by mass with respect to 100 parts by mass in total of the components (a) and (b). Is preferred.
- the component (c) is an organohydrogenpolysiloxane represented by the following average composition formula (2), having two or more SiH bonds in one molecule and having a viscosity at 25 ° C. of 1,000 mPa ⁇ s or less.
- the component (c) is a component that acts as a crosslinking agent that reacts with the alkenyl group contained in the components (a) and (b) by a hydrosilylation reaction to cause crosslinking.
- R 4 is a monovalent hydrocarbon group not containing an alkenyl group, and 50% or more of all R 4 is a methyl group; a and b are 0.7 ⁇ a ⁇ 2.1, It is a number that satisfies 0.001 ⁇ b ⁇ 1.0 and 0.8 ⁇ a + b ⁇ 3.0.
- the viscosity of the component (c) is 1,000 mPa ⁇ s or less at 25 ° C., preferably 0.5 to 1,000 mPa ⁇ s, more preferably Is 2 to 200 mPa ⁇ s.
- the amount of component (c) is such that the number of SiH bonds in component (c) is 0. 0 with respect to the total number of alkenyl groups in component (a) and component (b).
- the amount is 5 to 5.0 times, preferably 0.7 to 3.0 times.
- SiH containing 2 or more usually 2 to 200), preferably 3 or more (for example, 3 to 100), more preferably about 4 to 50 in one molecule.
- the bond may be located at either the molecular chain end or in the middle of the molecular chain, or may be located at both.
- component (c) may be any of linear, cyclic, branched, and three-dimensional network structures.
- the number (or degree of polymerization) of silicon atoms in one molecule of component (c) is usually 2 to 200, preferably 3 to 100, and more preferably about 4 to 50.
- R 4 is a monovalent hydrocarbon group containing no alkenyl group, and among them, those having 1 to 10 carbon atoms, particularly 1 to 8 carbon atoms are preferred.
- R 4 include methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, tert-butyl group, pentyl group, neopentyl group, hexyl group, cyclohexyl group, octyl group, Nonyl group, alkyl group such as decyl group; aryl group such as phenyl group, tolyl group, xylyl group, naphthyl group; aralkyl group such as benzyl group, phenylethyl group, phenylpropyl group, etc., particularly methyl group or phenyl group Groups are preferred.
- organohydrogenpolysiloxane represented by the above average composition formula (2) examples include 1,1,3,3-tetramethyldisiloxane, 1,3,5,7-tetramethylcyclotetrasiloxane, tris ( Hydrogendimethylsiloxy) methylsilane, tris (hydrogendimethylsiloxy) phenylsilane, methylhydrogencyclopolysiloxane, methylhydrogensiloxane-dimethylsiloxane cyclic copolymer, both ends trimethylsiloxy group-blocked methylhydrogenpolysiloxane, both ends Trimethylsiloxy group-blocked dimethylsiloxane / methylhydrogensiloxane copolymer, both ends dimethylhydrogensiloxy group-blocked dimethylpolysiloxane, both ends dimethylhydrogensiloxy group-blocked methyl Drogen polysiloxane, both ends dimethylhydrogensiloxy-blocked dimethylsi
- component (c) examples include linear organohydrogenpolysiloxanes and cyclic organohydrogenpolysiloxanes represented by the following formula.
- the component (d) is a platinum group metal catalyst, and the component (d) is a reaction catalyst that promotes the reaction (hydrosilylation reaction) between the components (a) and (b) and the component (c). It is a working ingredient.
- platinum group metal catalyst known as a hydrosilylation reaction catalyst can be used.
- platinum group metals such as platinum black, rhodium and palladium; H 2 PtCl 4 ⁇ kH 2 O, H 2 PtCl 6 ⁇ kH 2 O, NaHPtCl 6 ⁇ kH 2 O, KHPtCl 6 ⁇ kH 2 O, Na 2 PtCl 6 ⁇ kH 2 O, K 2 PtCl 4 ⁇ kH 2 O, PtCl 4 ⁇ kH 2 O, PtCl 2 , Na 2 HPtCl 4 ⁇ kH 2 O (wherein k is an integer of 0 to 6, preferably 0) Or chloroplatinic acid, and chloroplatinate; alcohol-modified chloroplatinic acid (see US Pat.
- the blending amount of component (d) is a so-called effective amount. Specifically, it is 1 to 500 ppm, preferably 3 to 100 ppm in terms of the mass of metal atoms with respect to the total of components (a) to (c). The amount is preferably 5 to 40 ppm.
- the component (e) contains a Si—O—Ce bond and a Si—O—Ti bond, has a Ce content of 50 to 5,000 ppm, a Ti content of 50 to 5,000 ppm, and a viscosity at 25 ° C. Of 10 to 10,000 mPa ⁇ s, and this component (e) is an additive for improving the heat resistance of the addition-curable silicone resin composition of the present invention.
- a method for producing the polyorganometallosiloxane as the component (e) will be described later.
- Component (e) is blended in an amount of 0.01 to 5 parts by weight, preferably 0.1 to 3 parts by weight, more preferably 0.8 parts per 100 parts by weight of the total of components (a) to (d). 5 to 3 parts by mass. If the amount of component (e) exceeds 5 parts by mass, the resulting addition-curable silicone resin composition may be discolored or the hardness of the cured product may be reduced. Moreover, when the compounding quantity of (e) component is less than 0.01 mass part, sufficient heat resistance cannot be obtained.
- thixotropic control agents such as fumed silica
- light scattering agents such as crystalline silica
- reinforcing materials such as fumed silica and crystalline silica
- phosphors such as phosphors
- petroleum solvents reactive functional groups
- Viscosity modifiers such as non-reactive silicone oils without carbon
- carbon functional silanes epoxy groups, alkoxy groups, hydrogen atoms bonded to silicon atoms (ie, SiH bonds) and alkenyl groups such as vinyl groups bonded to silicon atoms
- Adhesion improvers such as silicone compounds other than the components (a) to (e) having at least one of the following: conductivity imparting agents such as metal powders such as silver and gold; pigments and dyes for coloring; ethynylcyclohexanol; Examples
- the curing conditions for the addition-curable silicone resin composition of the present invention are not particularly limited, but are preferably 120 to 180 ° C. and 30 to 180 minutes.
- the addition curable silicone resin composition of the present invention has a total light transmittance of 80% or more at a wavelength of 400 nm of a sheet having a thickness of 2 mm of the cured product, and the weight of the cured product after being stored at 250 ° C. for 500 hours. The rate is preferably within 10%.
- a cured product having transparency and heat resistance particularly suitable for LED applications is provided.
- the addition-curable silicone resin composition of the present invention is excellent in transparency and heat discoloration, has an appropriate rubber hardness, has little hardness change and weight loss under high temperature conditions, and cracks. It becomes an addition-curable silicone resin composition that gives a cured product with good resistance.
- the present invention is a method for producing the above addition curable silicone resin composition of the present invention by mixing the above components (a) to (e), As the component (e), (I) Organopolysiloxane having a viscosity of 10 to 10,000 mPa ⁇ s at 25 ° C .: 100 parts by mass (Ii) Rare earth carboxylate containing cerium carboxylate represented by the following general formula (e-1): The mass of cerium is 0.05 to 5 parts by mass with respect to 100 parts by mass of component (i).
- a polyorganometallosiloxane having a predetermined Ce content and Ti content (that is, the component (e)) can be easily synthesized.
- the resin composition can be easily produced.
- the present invention also provides an optical semiconductor device in which a light emitting diode is sealed with the above addition curable silicone resin composition of the present invention.
- the light-emitting diode can be obtained with the addition-curable silicone resin composition of the present invention that provides a cured product that is excellent in transparency as described above, and that has a reduced hardness change and reduced weight loss under high temperature conditions. Since it is sealed, the optical semiconductor device is excellent in reliability under high temperature conditions.
- the addition-curable silicone resin composition of the present invention is a material for protecting / sealing LED elements, a material for changing / adjusting wavelengths, a material for forming lenses, and other optical devices or optical components. It is particularly useful as a material.
- the polyorganometallosiloxane (e1) thus synthesized had a Ce content of 3,400 ppm, a Ti content of 3,700 ppm, and a viscosity at 25 ° C. of 104 mPa ⁇ s.
- a platinum catalyst (d1) having 1 part by mass of the polyorganometallosiloxane (e1) obtained in Synthesis Example 1 and tetramethylvinyldisiloxane derived from chloroplatinic acid as a ligand is added to the dimethylpolysiloxane (a1).
- Silicone resin (b1), and methylhydrogenpolysiloxane (c1) are added in an amount of 5 ppm in terms of platinum atom, and the mixture is uniformly mixed so that the viscosity is 5,000 mPa ⁇ s.
- An addition-curable silicone resin composition was obtained.
- Example 2 A transparent addition-curing silicone having a viscosity of 4,800 mPa ⁇ s, except that the amount of the polyorganometallosiloxane (e1) obtained in Synthesis Example 1 is changed to 2 parts by mass. A resin composition was obtained.
- Example 3 A linear dimethylpolysiloxane (a2) having a viscosity of 100,000 mPa ⁇ s at 25 ° C. blocked with three vinyl groups at both ends, and the same silicone resin (b1) used in Example 1
- Toluene was removed from this mixture under reduced pressure at 120 ° C. and 10 mmHg (about 1.3 kPa) or less to obtain a transparent liquid at room temperature.
- Example 4 A linear dimethylpolysiloxane (a3) having a viscosity of 60 mPa ⁇ s at both ends blocked with vinyl groups and a toluene solution of the same silicone resin (b1) used in Example 1
- the dimethylpolysiloxane (a3): silicone resin (b1) 25: 75 in terms of mass ratio in terms of active ingredients.
- Toluene was removed from this mixture under reduced pressure at 120 ° C. and 10 mmHg (about 1.3 kPa) or less to obtain a transparent liquid at room temperature.
- Example 2 The same operation as in Example 3 was performed except that the polyorganometallosiloxane (e1) obtained in Synthesis Example 1 was not added to obtain a transparent addition-curable silicone resin composition having a viscosity of 5,100 mPa ⁇ s.
- the addition-curable silicone resin composition of the present invention provides an addition-curable silicone resin composition that is excellent in transparency and that provides a cured product with less change in hardness and less weight loss under high temperature conditions. Became clear.
- the present invention is not limited to the above embodiment.
- the above-described embodiment is an exemplification, and the present invention has any configuration that has substantially the same configuration as the technical idea described in the claims of the present invention and that exhibits the same effects. Are included in the technical scope.
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Abstract
Description
(a)一分子中にケイ素原子に結合するアルケニル基を2個以上有し、25℃における粘度が50~100,000mPa・sであるオルガノポリシロキサン、
(b)下記平均組成式(1)で表され、25℃における粘度が1,000Pa・s以上の液体又は固体であるオルガノポリシロキサン:前記(a)成分と(b)成分の合計100質量部に対して(b)成分が0質量部より多く80質量部未満となる量、
(R1R2 2SiO1/2)m(R1R2SiO2/2)n(R2 2SiO2/2)p(R1SiO3/2)q(R2(OR3)SiO2/2)r(SiO4/2)s・・・(1)
(式中、R1はアルケニル基を含んでもよい一価炭化水素基であり;R2はアルケニル基を含まない一価炭化水素基であって、全R2のうち80%以上はメチル基であり;R3は水素原子又はアルキル基であり;m、n、p、q、r、及びsはm≧0、n≧0、p≧0、q≧0、r≧0、s≧0、かつm+n>0、q+r+s>0、m+n+p+q+r+s=1を満たす数である。)
(c)下記平均組成式(2)で表され、一分子中にSiH結合を2個以上有し、かつ25℃における粘度が1,000mPa・s以下であるオルガノハイドロジェンポリシロキサン:前記(a)成分及び前記(b)成分のアルケニル基の数の合計に対して、(c)成分のSiH結合の数が0.5~5.0倍となる量、
R4 aHbSiO(4-a-b)/2・・・(2)
(式中、R4はアルケニル基を含まない一価炭化水素基であって、全R4のうち50%以上はメチル基であり;a及びbは、0.7≦a≦2.1、0.001≦b≦1.0、かつ0.8≦a+b≦3.0を満たす数である。)
(d)白金族金属系触媒:前記(a)~(c)成分の合計に対して、金属原子の質量換算で1~500ppmとなる量、及び
(e)Si-O-Ce結合、及びSi-O-Ti結合を含有し、Ce含有量が50~5,000ppm、Ti含有量が50~5,000ppmであり、25℃における粘度が10~10,000mPa・sであるポリオルガノメタロシロキサン:前記(a)~(d)成分の合計100質量部に対して0.01~5質量部、
を含有し、加熱により硬化する付加硬化型シリコーン樹脂組成物を提供する。
前記(e)成分として、
(i)25℃における粘度が10~10,000mPa・sであるオルガノポリシロキサン:100質量部、
(ii)下記一般式(e-1)で表されるセリウムカルボン酸塩を含む希土類カルボン酸塩:セリウムの質量が前記(i)成分100質量部に対して0.05~5質量部となる量、及び
(R5COO)xCe・・・(e-1)
(式中、R5は同種又は異種の一価炭化水素基であり、xは3又は4である。)
(iii)下記一般式(e-2)で表されるチタン化合物及び/又はその部分加水分解縮合物:チタンの質量が前記(i)成分100質量部に対して0.05~5質量部となる量、
(R6O)4Ti・・・(e-2)
(式中、R6は同種又は異種の一価炭化水素基である。)
からなる混合物を150℃以上の温度で熱処理して得られるポリオルガノメタロシロキサンを用いる付加硬化型シリコーン樹脂組成物の製造方法を提供する。
(a)一分子中にケイ素原子に結合するアルケニル基を2個以上有し、25℃における粘度が50~100,000mPa・sであるオルガノポリシロキサン
(b)下記平均組成式(1)で表され、25℃における粘度が1,000Pa・s以上の液体又は固体であるオルガノポリシロキサン:前記(a)成分と(b)成分の合計100質量部に対して(b)成分が0質量部より多く80質量部未満となる量
(R1R2 2SiO1/2)m(R1R2SiO2/2)n(R2 2SiO2/2)p(R1SiO3/2)q(R2(OR3)SiO2/2)r(SiO4/2)s・・・(1)
(式中、R1はアルケニル基を含んでもよい一価炭化水素基であり;R2はアルケニル基を含まない一価炭化水素基であって、全R2のうち80%以上はメチル基であり;R3は水素原子又はアルキル基であり;m、n、p、q、r、及びsはm≧0、n≧0、p≧0、q≧0、r≧0、s≧0、かつm+n>0、q+r+s>0、m+n+p+q+r+s=1を満たす数である。)
(c)下記平均組成式(2)で表され、一分子中にSiH結合を2個以上有し、かつ25℃における粘度が1,000mPa・s以下であるオルガノハイドロジェンポリシロキサン:前記(a)成分及び前記(b)成分のアルケニル基の数の合計に対して、(c)成分のSiH結合の数が0.5~5.0倍となる量
R4 aHbSiO(4-a-b)/2・・・(2)
(式中、R4はアルケニル基を含まない一価炭化水素基であって、全R4のうち50%以上はメチル基であり;a及びbは、0.7≦a≦2.1、0.001≦b≦1.0、かつ0.8≦a+b≦3.0を満たす数である。)
(d)白金族金属系触媒:前記(a)~(c)成分の合計に対して、金属原子の質量換算で1~500ppmとなる量
(e)Si-O-Ce結合、及びSi-O-Ti結合を含有し、Ce含有量が50~5,000ppm、Ti含有量が50~5,000ppmであり、25℃における粘度が10~10,000mPa・sであるポリオルガノメタロシロキサン:前記(a)~(d)成分の合計100質量部に対して0.01~5質量部
以下、各成分について更に詳細に説明する。
[(a)成分]
(a)成分は、一分子中にケイ素原子に結合するアルケニル基を2個以上有し、25℃における粘度が50~100,000mPa・sであるオルガノポリシロキサンであり、この(a)成分は、本発明の付加硬化型シリコーン樹脂組成物において、硬化後の応力緩和をもたらすために必要な成分である。(a)成分は、典型的には、主鎖がジオルガノシロキサン単位の繰り返しからなり、分子鎖両末端がトリオルガノシロキシ基で封鎖された、直鎖状のオルガノポリシロキサンである。
ViR2SiO(SiR2O)dSiR2Vi
ViR2SiO(SiRViO)c(SiR2O)dSiR2Vi
Vi2RSiO(SiR2O)dSiRVi2
Vi3SiO(SiR2O)dSiVi3
Vi2RSiO(SiRViO)c(SiR2O)dSiRVi2
Vi3SiO(SiRViO)c(SiR2O)dSiVi3
R3SiO(SiRViO)c(SiR2O)dSiR3
(式中、Rは脂肪族不飽和基及びアリール基のいずれも含まない一価炭化水素基であり、好ましくは炭素原子数が10以下の一価炭化水素基である。cは0~5の整数であり、dは0~200の整数である。)
ViMe2SiO(Me2SiO)20SiMe2Vi
ViMe2SiO(Me2SiO)90SiMe2Vi
ViMe2SiO(MeViSiO)1(Me2SiO)19SiMe2Vi
Me3SiO(MeViSiO)2(Me2SiO)18SiMe3
(b)成分は、下記平均組成式(1)で表され、25℃における粘度が1,000Pa・s以上の液体又は固体であるオルガノポリシロキサンであり、この(b)成分は、本発明の付加硬化型シリコーン樹脂組成物において、無色透明性を維持したまま補強性を付与するために必要な成分である。
(R1R2 2SiO1/2)m(R1R2SiO2/2)n(R2 2SiO2/2)p(R1SiO3/2)q(R2(OR3)SiO2/2)r(SiO4/2)s・・・(1)
(式中、R1はアルケニル基を含んでもよい一価炭化水素基であり;R2はアルケニル基を含まない一価炭化水素基であって、全R2のうち80%以上はメチル基であり;R3は水素原子又はアルキル基であり;m、n、p、q、r、及びsはm≧0、n≧0、p≧0、q≧0、r≧0、s≧0、かつm+n>0、q+r+s>0、m+n+p+q+r+s=1を満たす数である。)
(c)成分は、下記平均組成式(2)で表され、一分子中にSiH結合を2個以上有し、かつ25℃における粘度が1,000mPa・s以下であるオルガノハイドロジェンポリシロキサンであり、この(c)成分は、上述の(a)成分及び(b)成分中に含まれるアルケニル基とヒドロシリル化反応により反応して架橋させる架橋剤として働く成分である。
R4 aHbSiO(4-a-b)/2・・・(2)
(式中、R4はアルケニル基を含まない一価炭化水素基であって、全R4のうち50%以上はメチル基であり;a及びbは、0.7≦a≦2.1、0.001≦b≦1.0、かつ0.8≦a+b≦3.0を満たす数である。)
Me3SiO(MeHSiO)eSiMe3
Me3SiO(MeHSiO)e(Me2SiO)fSiMe3
(式中、e、fは2~100、好ましくは2~50の整数である。)
(d)成分は白金族金属系触媒であり、この(d)成分は、上述の(a)成分及び(b)成分と(c)成分との反応(ヒドロシリル化反応)を促進する反応触媒として働く成分である。
(e)成分は、Si-O-Ce結合、及びSi-O-Ti結合を含有し、Ce含有量が50~5,000ppm、Ti含有量が50~5,000ppmであり、25℃における粘度が10~10,000mPa・sであるポリオルガノメタロシロキサンであり、この(e)成分は、本発明の付加硬化型シリコーン樹脂組成物の耐熱性を向上させるための添加剤である。なお、この(e)成分のポリオルガノメタロシロキサンを製造する方法については後述する。
本発明の付加硬化型シリコーン樹脂組成物には、必須成分である上記(a)~(e)成分以外に、必要に応じて、以下に例示するその他の成分を配合してもよい。その他の成分としては、例えば、ヒュームドシリカ等のチクソ性制御剤;結晶性シリカ等の光散乱剤;ヒュームドシリカ、結晶性シリカ等の補強材;蛍光体;石油系溶剤、反応性官能基を有しない非反応性シリコーンオイル等の粘度調整剤;カーボンファンクショナルシラン、エポキシ基、アルコキシ基、ケイ素原子に結合した水素原子(即ち、SiH結合)及びケイ素原子に結合したビニル基等のアルケニル基の少なくとも一種を有する(a)~(e)成分以外のシリコーン化合物等の接着性向上剤;銀、金等の金属粉等の導電性付与剤;着色のための顔料及び染料;エチニルシクロヘキサノール、テトラメチルテトラビニルテトラシクロシロキサン等の反応抑制剤等が挙げられる。これらのその他の成分は、一種単独で用いても二種以上を併用してもよい。
また、本発明では、上記の(a)~(e)成分を混合して上述の本発明の付加硬化型シリコーン樹脂組成物を製造する方法であって、
前記(e)成分として、
(i)25℃における粘度が10~10,000mPa・sであるオルガノポリシロキサン:100質量部、
(ii)下記一般式(e-1)で表されるセリウムカルボン酸塩を含む希土類カルボン酸塩:セリウムの質量が前記(i)成分100質量部に対して0.05~5質量部となる量、及び
(R5COO)xCe・・・(e-1)
(式中、R5は同種又は異種の一価炭化水素基であり、xは3又は4である。)
(iii)下記一般式(e-2)で表されるチタン化合物及び/又はその部分加水分解縮合物:チタンの質量が前記(i)成分100質量部に対して0.05~5質量部となる量、
(R6O)4Ti・・・(e-2)
(式中、R6は同種又は異種の一価炭化水素基である。)
からなる混合物を150℃以上の温度で熱処理して得られるポリオルガノメタロシロキサンを用いる付加硬化型シリコーン樹脂組成物の製造方法を提供する。なお、熱処理温度は、樹脂が変性しない温度であればよく、上限は特に限定されない。
また、本発明では、上記の本発明の付加硬化型シリコーン樹脂組成物で発光ダイオードが封止された光学半導体装置を提供する。このような光学半導体装置であれば、上記のように透明性に優れ、かつ高温条件下におけるの硬度変化及び重量減少の少ない硬化物を与える本発明の付加硬化型シリコーン樹脂組成物で発光ダイオードが封止されるため、高温条件下における信頼性に優れた光学半導体装置となる。
(e)成分の合成
25℃における粘度が100mPa・sの両末端トリメチルシロキシ基封鎖ジメチルポリシロキサン100質量部に、セリウムを主成分とする2-エチルヘキサン酸塩のターペン溶液(希土類元素含有量6質量%)10質量部(セリウムの質量:0.55質量部)とテトラn-ブチルチタネート2.1質量部(チタンの質量:1.65質量部)を予め混合したものを充分攪拌しながら添加したところ、黄白色の分散液が得られた。これに窒素ガスを少量流通させながら、加熱してターペンを流出させ、次いで300℃で1時間加熱したところ、濃赤褐色で透明なポリオルガノメタロシロキサン(e1)の均一組成物が得られた。このようにして合成したポリオルガノメタロシロキサン(e1)のCe含有量は3,400ppm、Ti含有量は3,700ppmであり、25℃における粘度は104mPa・sであった。
両末端がビニル基で封鎖された、25℃における粘度が5,000mPa・sである直鎖状のジメチルポリシロキサン(a1)と、Me3SiO1/2単位、ViMe2SiO1/2単位、及びSiO4/2単位で構成され、SiO4/2単位に対してMe3SiO1/2単位及びViMe2SiO1/2単位のモル比が0.8で、固形分に対するビニル基量が0.085モル/100gである固体状のシリコーンレジン(b1)のトルエン溶液とを、有効成分換算にて質量比でジメチルポリシロキサン(a1):シリコーンレジン(b1)=75:25の割合で混合した。この混合物から120℃、10mmHg(約1.3kPa)以下の減圧下でトルエンを除去し、室温で透明な液体を得た。
合成例1で得られたポリオルガノメタロシロキサン(e1)の添加量を2質量部に変更する以外は実施例1と同様な操作を行い、粘度が4,800mPa・sの透明な付加硬化型シリコーン樹脂組成物を得た。
両末端が3つのビニル基で封鎖された25℃における粘度が100,000mPa・sである直鎖状のジメチルポリシロキサン(a2)と、実施例1で使用したものと同じシリコーンレジン(b1)のトルエン溶液とを、有効成分換算にて質量比でジメチルポリシロキサン(a2):シリコーンレジン(b1)=40:60の割合で混合した。この混合物から120℃、10mmHg(約1.3kPa)以下の減圧下でトルエンを除去し、室温で透明な液体を得た。
両末端がビニル基で封鎖された25℃における粘度が60mPa・sである直鎖状のジメチルポリシロキサン(a3)と、実施例1で使用したものと同じシリコーンレジン(b1)のトルエン溶液とを、有効成分換算にて質量比でジメチルポリシロキサン(a3):シリコーンレジン(b1)=25:75の割合で混合した。この混合物から120℃、10mmHg(約1.3kPa)以下の減圧下でトルエンを除去し、室温で透明な液体を得た。
合成例1で得られたポリオルガノメタロシロキサン(e1)を添加しない以外は実施例1と同様な操作を行い、粘度が5,100mPa・sの透明な付加硬化型シリコーン樹脂組成物を得た。
合成例1で得られたポリオルガノメタロシロキサン(e1)を添加しない以外は実施例3と同様な操作を行い、粘度が5,100mPa・sの透明な付加硬化型シリコーン樹脂組成物を得た。
合成例1で得られたポリオルガノメタロシロキサン(e1)を添加しない以外は実施例4と同様な操作を行い、粘度が5,100mPa・sの透明な付加硬化型シリコーン樹脂組成物を得た。
(硬化物の光透過率の測定)
各実施例及び各比較例において得られた付加硬化型シリコーン樹脂組成物を用いて、150℃で1時間加熱することにより硬化して厚さ2mmのシート状の硬化物を作製した。得られた硬化物の波長400nmにおける全光線透過率(光路長2mm)を測定した。なお、この時点での光透過率を「初期」とする。
(耐熱性試験後の光透過率の測定)
上記の光透過率の測定に用いた硬化物を250℃、500時間の環境下に保管後、再度波長400nmにおける全光線透過率を測定した。
(硬化物の硬度の測定)
各実施例及び各比較例において得られた付加硬化型シリコーン樹脂組成物を用いて、150℃で3時間加熱することにより得られた硬化物のTypeA硬度又はShoreD硬度を測定した。なお、実施例1、2、及び比較例1ではTypeA硬度を測定し、実施例3、4、及び比較例2、3ではShoreD硬度を測定した。この時点での硬度を「初期」とする。
(耐熱性試験後の硬度の測定)
上記の硬度の測定に用いた硬化物を250℃、500時間の環境下に保管後、再度硬化物のTypeA硬度又はShoreD硬度を測定した。硬度の変化率は下記の式に従って求めた。
(変化率)=((耐熱性試験後の硬度)÷(初期の硬度)×100)-100(%)
(耐熱性試験による重量減少率の測定)
上記の光透過率の測定に用いた硬化物の初期重量を100とし、250℃、500時間の環境下に保管後の重量を測定し、重量%で比較し、重量減少率を算出した。
Claims (4)
- 付加硬化型シリコーン樹脂組成物であって、
(a)一分子中にケイ素原子に結合するアルケニル基を2個以上有し、25℃における粘度が50~100,000mPa・sであるオルガノポリシロキサン、
(b)下記平均組成式(1)で表され、25℃における粘度が1,000Pa・s以上の液体又は固体であるオルガノポリシロキサン:前記(a)成分と(b)成分の合計100質量部に対して(b)成分が0質量部より多く80質量部未満となる量、
(R1R2 2SiO1/2)m(R1R2SiO2/2)n(R2 2SiO2/2)p(R1SiO3/2)q(R2(OR3)SiO2/2)r(SiO4/2)s・・・(1)
(式中、R1はアルケニル基を含んでもよい一価炭化水素基であり;R2はアルケニル基を含まない一価炭化水素基であって、全R2のうち80%以上はメチル基であり;R3は水素原子又はアルキル基であり;m、n、p、q、r、及びsはm≧0、n≧0、p≧0、q≧0、r≧0、s≧0、かつm+n>0、q+r+s>0、m+n+p+q+r+s=1を満たす数である。)
(c)下記平均組成式(2)で表され、一分子中にSiH結合を2個以上有し、かつ25℃における粘度が1,000mPa・s以下であるオルガノハイドロジェンポリシロキサン:前記(a)成分及び前記(b)成分のアルケニル基の数の合計に対して、(c)成分のSiH結合の数が0.5~5.0倍となる量、
R4 aHbSiO(4-a-b)/2・・・(2)
(式中、R4はアルケニル基を含まない一価炭化水素基であって、全R4のうち50%以上はメチル基であり;a及びbは、0.7≦a≦2.1、0.001≦b≦1.0、かつ0.8≦a+b≦3.0を満たす数である。)
(d)白金族金属系触媒:前記(a)~(c)成分の合計に対して、金属原子の質量換算で1~500ppmとなる量、及び
(e)Si-O-Ce結合、及びSi-O-Ti結合を含有し、Ce含有量が50~5,000ppm、Ti含有量が50~5,000ppmであり、25℃における粘度が10~10,000mPa・sであるポリオルガノメタロシロキサン:前記(a)~(d)成分の合計100質量部に対して0.01~5質量部、
を含有し、加熱により硬化するものであることを特徴とする付加硬化型シリコーン樹脂組成物。 - 前記付加硬化型シリコーン樹脂組成物が、該組成物の硬化物の厚さ2mmのシートの波長400nmにおける全光線透過率が80%以上であり、前記硬化物の250℃で500時間保管後の重量減少率が10%以内のものであることを特徴とする請求項1に記載の付加硬化型シリコーン樹脂組成物。
- 前記(a)~(e)成分を混合して請求項1又は請求項2に記載の付加硬化型シリコーン樹脂組成物を製造する方法であって、
前記(e)成分として、
(i)25℃における粘度が10~10,000mPa・sであるオルガノポリシロキサン:100質量部、
(ii)下記一般式(e-1)で表されるセリウムカルボン酸塩を含む希土類カルボン酸塩:セリウムの質量が前記(i)成分100質量部に対して0.05~5質量部となる量、及び
(R5COO)xCe・・・(e-1)
(式中、R5は同種又は異種の一価炭化水素基であり、xは3又は4である。)
(iii)下記一般式(e-2)で表されるチタン化合物及び/又はその部分加水分解縮合物:チタンの質量が前記(i)成分100質量部に対して0.05~5質量部となる量、
(R6O)4Ti・・・(e-2)
(式中、R6は同種又は異種の一価炭化水素基である。)
からなる混合物を150℃以上の温度で熱処理して得られるポリオルガノメタロシロキサンを用いることを特徴とする付加硬化型シリコーン樹脂組成物の製造方法。 - 請求項1又は請求項2に記載の付加硬化型シリコーン樹脂組成物で発光ダイオードが封止されたものであることを特徴とする光学半導体装置。
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JP7484140B2 (ja) | 2019-11-22 | 2024-05-16 | 信越化学工業株式会社 | キーパッド作製用シリコーンゴム組成物及びキーパッド |
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TWI679244B (zh) | 2019-12-11 |
CN108350275A (zh) | 2018-07-31 |
EP3360928A4 (en) | 2019-05-01 |
TW201734135A (zh) | 2017-10-01 |
US20180315906A1 (en) | 2018-11-01 |
JP2017088776A (ja) | 2017-05-25 |
KR102081781B1 (ko) | 2020-02-26 |
US10483442B2 (en) | 2019-11-19 |
KR20180082451A (ko) | 2018-07-18 |
EP3360928B1 (en) | 2022-05-18 |
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