EP0481758A1 - Silikon-Schmierfettzusammensetzungen zur Unterstützung der Wärmestrahlung - Google Patents

Silikon-Schmierfettzusammensetzungen zur Unterstützung der Wärmestrahlung Download PDF

Info

Publication number: EP0481758A1
Authority: EP; European Patent Office
Prior art keywords: silicone grease; grease composition; parts; composition; monofunctional
Prior art date: 1990-10-16
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Withdrawn

Application number

EP91309533A

Other languages

English (en)

French (fr)

Inventor

Takayuki Takahashi

Satoshi Kuwata

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Shin Etsu Chemical Co Ltd

Original Assignee

Shin Etsu Chemical Co Ltd

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1990-10-16

Filing date

1991-10-16

Publication date

1992-04-22

1991-10-16 Application filed by Shin Etsu Chemical Co Ltd filed Critical Shin Etsu Chemical Co Ltd

1992-04-22 Publication of EP0481758A1 publication Critical patent/EP0481758A1/de

Status Withdrawn legal-status Critical Current

Links

239000004519 grease Substances 0.000 title claims abstract description 58
229920001296 polysiloxane Polymers 0.000 title claims abstract description 52
239000000203 mixture Substances 0.000 title claims abstract description 49
230000005855 radiation Effects 0.000 title claims abstract description 20
125000001183 hydrocarbyl group Chemical group 0.000 claims abstract description 13
125000001931 aliphatic group Chemical group 0.000 claims abstract description 9
239000002562 thickening agent Substances 0.000 claims abstract description 8
125000005358 mercaptoalkyl group Chemical group 0.000 claims abstract description 7
150000002484 inorganic compounds Chemical class 0.000 claims abstract description 5
229910010272 inorganic material Inorganic materials 0.000 claims abstract description 5
239000003504 photosensitizing agent Substances 0.000 claims abstract description 5
PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 4
125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 4
238000000034 method Methods 0.000 claims description 10
125000004432 carbon atom Chemical group C* 0.000 claims description 7
XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical group [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 6
FRASJONUBLZVQX-UHFFFAOYSA-N 1,4-naphthoquinone Chemical compound C1=CC=C2C(=O)C=CC(=O)C2=C1 FRASJONUBLZVQX-UHFFFAOYSA-N 0.000 claims description 4
RBGUKBSLNOTVCD-UHFFFAOYSA-N 1-methylanthracene-9,10-dione Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2C RBGUKBSLNOTVCD-UHFFFAOYSA-N 0.000 claims description 4
KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 claims description 4
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 4
230000000740 bleeding effect Effects 0.000 claims description 4
-1 phenyl tolyl Chemical group 0.000 claims description 4
229910052582 BN Inorganic materials 0.000 claims description 3
PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 3
150000001875 compounds Chemical class 0.000 claims description 3
PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims description 3
230000002401 inhibitory effect Effects 0.000 claims description 3
HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
229910010271 silicon carbide Inorganic materials 0.000 claims description 3
239000011787 zinc oxide Substances 0.000 claims description 3
MLKIVXXYTZKNMI-UHFFFAOYSA-N 1-(4-dodecylphenyl)-2-hydroxy-2-methylpropan-1-one Chemical compound CCCCCCCCCCCCC1=CC=C(C(=O)C(C)(C)O)C=C1 MLKIVXXYTZKNMI-UHFFFAOYSA-N 0.000 claims description 2
QPXVRLXJHPTCPW-UHFFFAOYSA-N 2-hydroxy-2-methyl-1-(4-propan-2-ylphenyl)propan-1-one Chemical compound CC(C)C1=CC=C(C(=O)C(C)(C)O)C=C1 QPXVRLXJHPTCPW-UHFFFAOYSA-N 0.000 claims description 2
XMLYCEVDHLAQEL-UHFFFAOYSA-N 2-hydroxy-2-methyl-1-phenylpropan-1-one Chemical compound CC(C)(O)C(=O)C1=CC=CC=C1 XMLYCEVDHLAQEL-UHFFFAOYSA-N 0.000 claims description 2
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Chemical group CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims description 2
PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 claims description 2
150000004056 anthraquinones Chemical class 0.000 claims description 2
125000002029 aromatic hydrocarbon group Chemical group 0.000 claims description 2
RWCCWEUUXYIKHB-UHFFFAOYSA-N benzophenone Chemical compound C=1C=CC=CC=1C(=O)C1=CC=CC=C1 RWCCWEUUXYIKHB-UHFFFAOYSA-N 0.000 claims description 2
239000012965 benzophenone Substances 0.000 claims description 2
125000004218 chloromethyl group Chemical group [H]C([H])(Cl)* 0.000 claims description 2
125000000068 chlorophenyl group Chemical group 0.000 claims description 2
229910017052 cobalt Inorganic materials 0.000 claims description 2
239000010941 cobalt Substances 0.000 claims description 2
GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 2
229910052802 copper Inorganic materials 0.000 claims description 2
239000010949 copper Substances 0.000 claims description 2
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 claims description 2
125000003438 dodecyl 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])C([H])([H])C([H])([H])* 0.000 claims description 2
125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 2
150000008282 halocarbons Chemical group 0.000 claims description 2
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 claims description 2
229910052742 iron Inorganic materials 0.000 claims description 2
230000001678 irradiating effect Effects 0.000 claims description 2
WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical class [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 2
125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
125000001421 myristyl 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])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
229910052759 nickel Inorganic materials 0.000 claims description 2
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 claims description 2
125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 2
150000003839 salts Chemical class 0.000 claims description 2
125000000725 trifluoropropyl group Chemical group [H]C([H])(*)C([H])([H])C(F)(F)F 0.000 claims description 2
ILBBNQMSDGAAPF-UHFFFAOYSA-N 1-(6-hydroxy-6-methylcyclohexa-2,4-dien-1-yl)propan-1-one Chemical compound CCC(=O)C1C=CC=CC1(C)O ILBBNQMSDGAAPF-UHFFFAOYSA-N 0.000 claims 1
229910052593 corundum Inorganic materials 0.000 abstract 1
239000002689 soil Substances 0.000 abstract 1
229920002554 vinyl polymer Polymers 0.000 abstract 1
229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
239000003921 oil Substances 0.000 description 11
239000002199 base oil Substances 0.000 description 8
238000001723 curing Methods 0.000 description 8
238000002156 mixing Methods 0.000 description 8
KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 description 5
238000000926 separation method Methods 0.000 description 4
VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
230000000052 comparative effect Effects 0.000 description 3
238000000016 photochemical curing Methods 0.000 description 3
239000003795 chemical substances by application Substances 0.000 description 2
238000009501 film coating Methods 0.000 description 2
238000010438 heat treatment Methods 0.000 description 2
GJKGAPPUXSSCFI-UHFFFAOYSA-N 2-Hydroxy-4'-(2-hydroxyethoxy)-2-methylpropiophenone Chemical compound CC(C)(O)C(=O)C1=CC=C(OCCO)C=C1 GJKGAPPUXSSCFI-UHFFFAOYSA-N 0.000 description 1
PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
230000001070 adhesive effect Effects 0.000 description 1
230000002411 adverse Effects 0.000 description 1
239000003963 antioxidant agent Substances 0.000 description 1
239000006229 carbon black Substances 0.000 description 1
239000003054 catalyst Substances 0.000 description 1
239000011248 coating agent Substances 0.000 description 1
239000000084 colloidal system Substances 0.000 description 1
238000004040 coloring Methods 0.000 description 1
230000006866 deterioration Effects 0.000 description 1
239000004205 dimethyl polysiloxane Substances 0.000 description 1
235000013870 dimethyl polysiloxane Nutrition 0.000 description 1
239000000975 dye Substances 0.000 description 1
230000000694 effects Effects 0.000 description 1
239000000945 filler Substances 0.000 description 1
239000007888 film coating Substances 0.000 description 1
238000004898 kneading Methods 0.000 description 1
229910052748 manganese Inorganic materials 0.000 description 1
239000011572 manganese Substances 0.000 description 1
238000004519 manufacturing process Methods 0.000 description 1
125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
230000002165 photosensitisation Effects 0.000 description 1
239000000049 pigment Substances 0.000 description 1
229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
230000000750 progressive effect Effects 0.000 description 1
239000004576 sand Substances 0.000 description 1
239000000377 silicon dioxide Substances 0.000 description 1
239000010409 thin film Substances 0.000 description 1
125000003396 thiol group Chemical group [H]S* 0.000 description 1
125000003944 tolyl group Chemical group 0.000 description 1
229930195735 unsaturated hydrocarbon Natural products 0.000 description 1

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- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
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- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/50—Lubricating compositions characterised by the base-material being a macromolecular compound containing silicon
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- C10M129/00—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen
- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/24—Aldehydes; Ketones
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- C10M129/02—Lubricating compositions characterised by the additive being an organic non-macromolecular compound containing oxygen having a carbon chain of less than 30 atoms
- C10M129/26—Carboxylic acids; Salts thereof
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- C10M2207/08—Aldehydes; Ketones
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- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
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- C10M2229/02—Unspecified siloxanes; Silicones
- C10M2229/025—Unspecified siloxanes; Silicones used as base material
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- C10M2229/04—Siloxanes with specific structure
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- C10M2229/04—Siloxanes with specific structure
- C10M2229/041—Siloxanes with specific structure containing aliphatic substituents
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- C10M2229/04—Siloxanes with specific structure
- C10M2229/042—Siloxanes with specific structure containing aromatic substituents
- C10M2229/0425—Siloxanes with specific structure containing aromatic substituents used as base material
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- C10M2229/04—Siloxanes with specific structure
- C10M2229/043—Siloxanes with specific structure containing carbon-to-carbon double bonds
- C10M2229/0435—Siloxanes with specific structure containing carbon-to-carbon double bonds used as base material
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- C10M2229/04—Siloxanes with specific structure
- C10M2229/044—Siloxanes with specific structure containing silicon-to-hydrogen bonds
- C10M2229/0445—Siloxanes with specific structure containing silicon-to-hydrogen bonds used as base material
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- C10M2229/04—Siloxanes with specific structure
- C10M2229/045—Siloxanes with specific structure containing silicon-to-hydroxyl bonds
- C10M2229/0455—Siloxanes with specific structure containing silicon-to-hydroxyl bonds used as base material
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- C10M2229/04—Siloxanes with specific structure
- C10M2229/046—Siloxanes with specific structure containing silicon-oxygen-carbon bonds
- C10M2229/0465—Siloxanes with specific structure containing silicon-oxygen-carbon bonds used as base material
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- C10M2229/04—Siloxanes with specific structure
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- C10M2229/04—Siloxanes with specific structure
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- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
- C10M2229/0505—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon used as base material
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
- C10M2229/051—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing halogen
- C10M2229/0515—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing halogen used as base material
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
- C10M2229/052—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing nitrogen
- C10M2229/0525—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing nitrogen used as base material
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
- C10M2229/053—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing sulfur
- C10M2229/0535—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing sulfur used as base material
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2229/00—Organic macromolecular compounds containing atoms of elements not provided for in groups C10M2205/00, C10M2209/00, C10M2213/00, C10M2217/00, C10M2221/00 or C10M2225/00 as ingredients in lubricant compositions
- C10M2229/04—Siloxanes with specific structure
- C10M2229/05—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon
- C10M2229/054—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing phosphorus
- C10M2229/0545—Siloxanes with specific structure containing atoms other than silicon, hydrogen, oxygen or carbon containing phosphorus used as base material

Definitions

This invention concerns a photocurable silicone grease composition which is suitable for assisting heat radiation from electronic components and to a method of using the composition for this purpose in which the bleeding out of the composition can be prevented.
silicone greases comprising mainly dimethylpolysiloxane, dimethyldiphenylpolysiloxane or dimethyldecylmethylpolysiloxane, blended with zinc oxide, alumina, aluminum nitride, boron nitride, silicon carbide or the like as a thickening agent, see JP Examined Published Patent (“Tokko") No, 33272/′77) and JP Unexamined Laid-Open Patent Applications (“Tokkai”) Nos. 43492/′87, 43493/′87 and 153995/′90.
the grease tends to be squeezed or to leak or bleed out of the device when it becomes hot in use, and the leaked siloxane grease tends to infiltrate undesirably into other parts of the apparatus or the surroundings after long periods of use.
mechanical contacts are soiled so that the contacts were damaged, or the contact region between the commutator and brushes in a micromotor was soiled so that the motor no longer rotated properly.
the loss of the siloxane leads to a progressive deterioration in the amount of heat radiated away from the device.
a method is also known wherein an organopolysiloxane containing mercapto groups and an organopolysiloxane containing aliphatic unsaturated hydrocarbon groups are cured by the action of radiation or ultraviolet light, for example a composition of an organopolysiloxane containing mercaptoalkyl groups and one containing vinyl groups is cured in the presence of photosensitizing compounds by means of exposure to intense radiation such as ultraviolet light (JP Tokko No, 6512/′79 and Tokkai Nos. 61386/′75 and 79265/′87).
a thick film coating agent consisting of a curable organopolysiloxane using silica or carbon black as a filler (Tokko No. JP 23941/′86).
organic salts of e.g. manganese are used as curing catalysts, and the composition cures even when it is not irradiated with ultraviolet light.
a photocuring silicone grease composition comprising alone or principally: (1) 100 parts by weight of a photocuring organopolysiloxane consisting essentially of an organopolysiloxane having a viscosity of 50 - 100,000 cSt (0.5 - 1000 m2.s ⁇ 1) at 25°C and represented by the general formula R1 a R2 b R3 c SiO (4-(a+b+c))/2 (where a, b and c are defined respectively by the conditions 0,01 ⁇ a,b ⁇ O,1 and 1,9 ⁇ c ⁇ 2.0, R1 is a monofunctional mercaptoalkyl group represented by -(-CH2) n SH (wherein n is equal to 1 - 8), R2 is a monofunctional hydrocarbon group containing an aliphatic unsaturated group having 2 - 8 carbon atoms, and R3 is a substituted or unsubstituted monofunctional hydrocarbon group having 1 - 18 carbon
the silicone grease composition of the invention undergoes rapid curing in the light-exposed parts.
the silicone grease in the internal parts of a device which are not exposed to light is therefore prevented from moving outside due to leakage or bleeding of the composition, and as a result the heat irradiating functioning of the grease remains stable.
curable organopolysiloxane a silicone grease or "base oil”
the following are particularly suitable from the viewpoint of heat radiation properties and durability:
R2 designates a monofunctional hydrocarbon group containing an aliphatic unsaturated group having 2 - 8 carbon atoms, the vinyl group being particularly preferable
R3 designates a substituted or unsubstituted monofunctional hydrocarbon group having 1 - 18 carbon atoms, specific examples being aliphatic hydrocarbon groups such as methyl, ethyl, propyl, hexyl, octyl, decyl, dodecyl and tetradecyl, aromatic hydrocarbon groups such as phenyl and tolyl, and halogenated hydrocarbon groups such as trifluoropropyl, chloromethyl and chlorophenyl.
aliphatic hydrocarbon groups such as methyl, ethyl, propyl, hexyl, octyl, decyl, dodecyl and tetradecyl
aromatic hydrocarbon groups such as phenyl and tolyl
halogenated hydrocarbon groups such as trifluoropropyl, chloromethyl and chlorophenyl.
the viscosity of the organopolysiloxanes which constitute the first component is 50 - 100,000 cSt, but more preferably 200 - 3,000 cSt. When it is less than 50 cSt, the silicone grease composition for assisting heat radiation obtained by kneading the first component together with the second component has poor homogeneity. When on the other hand the viscosity is higher than 100,000 cSt, the blending proportion of the thickener added to confer suitable extensibility on the silicone grease composition thus obtained has to be reduced to a low level, and the grease no longer exhibits satisfactory heat radiation properties when it is used to assist heat radiation.
the thickener which is the second component is a powdered inorganic compound with good heat conduction properties, and for example may consist of one or more of a compound chosen from zinc oxide or alumina, aluminum nitride, boron nitride or silicon carbide.
the blending proportion of this second component is 100 - 900 parts by weight, and more preferably 150 - 400 parts by weight, with respect to 100 parts by weight of the first component. When the proportion is less than 100 parts by weight, the grease does not exhibit satisfactory heat radiation properties. When on the other hand the proportion is higher than 900 parts by weight, the resulting grease is extremely stiff so that it has poor extensibility which has an adverse effect on its performance.
accelerators such as organic acid salts, for example, of manganese, iron, cobalt, nickel or copper, and photosensitizers such as benzophenone, acetophenone, anthraquinone, methylanthraquinone, 1,4-naphthoquinone, 2-hydroxy-2-methyl-1-phenyl-propane-1-one, 1-(4-isopropylphenyl)-2-hydroxy-2-methyl-propane-1-one, 1-(4-dodecylphenyl)-2- hydroxy-2-methyl-propane-1-one, 1- ⁇ 4-(2-hydroxyethoxy)phenyl ⁇ -2-hydroxy-2-methyl-propane-1-one and the like, may be added as a third component if desired, in the proportion of 0.001 - 10 parts by weight with respect to 100 parts by weight of organopolysiloxanes.
antioxidants may be added as a fourth component if desired, provided that they do not interfere with the curing reaction.
the method of manufacturing the photocuring silicone grease composition of the invention consists of measuring out, into a planetary mixer, the organopolysiloxanes which are the first component and the thickener which is the second component, adding the third and fourth components if necessary, heating if necessary, and blending the components together. After blending, the mixture is kneaded to render it homogeneous.
the kneader employed may be a three-rod roller mill, colloid mill, sand grinder, Gaulin Homogenizer or the like, a three-rod roller mill being particularly preferable.
composition obtained as described hereintofore, and the silicone grease composition used in this invention undergo a curing reaction under even very mild conditions such as exposure to natural light, e.g. sunlight or roomlight, e.g. U.V.
natural light e.g. sunlight or roomlight, e.g. U.V.
the composition is used for example as a grease for assisting heat radiation, therefore, the excess grease squeezed out from the heat radiating surface rapidly undergoes surface curing. This inhibits bleed of the base oil so that the grease exhibits a stable heat conduction performance over long periods of time, and in addition it greatly improves the reliability of instrumentation.
the silicone grease composition of the invention is highly suitable as a grease for assisting heat radiation from transistors, IC, diodes, thermistors and the like used in household electrical appliances, audio systems and various types of industrial equipment.
Thickness and oil separation were measured according to the method described in JIS(JAPANESE INDUSTRIAL STANDARDS)-K-2220 "Grease”.
a grease was applied between a heat radiating fin of size 130 x 150 x 50 mm and a transistor (2SD113). The distance over which the base oil had spread after leaving the assembly in a room for 40 days after applying a tightening force of 5 kgf was judged visually, and taken as the oil bleed. Further, the curing of the excess grease was judged by touching it.
the thermal conductivity was measured by a Shinku Riko Inc. TCW-1000 heating coil type thermal conductivity meter.
the first and second components of the grease composition of the invention were measured out into a planetary mixer in the blending proportions shown in Table 1. After blending well together, the mixture obtained was kneaded three times by a three-rod roller mill, and the thickess, oil separation, oil bleed and thermal conductivity were evaluated. The results are shown in Table 2.
the first and second components of the grease composition of the invention were measured out into a planetary mixer in the blending proportions shown in Table 3. After blending well together, the mixture obtained was kneaded three times by a three-roller mill, and the thickness, oil separation, oil bleed and thermal conductivity of the samples obtained were evaluated. The results are shown in Table 4.
the silicone grease of the present invention loses almost no oil, the base oil has very little bleed, and moreover the composition has an excellent thermal conductivity.

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Chemical & Material Sciences (AREA)
Chemical Kinetics & Catalysis (AREA)
General Chemical & Material Sciences (AREA)
Oil, Petroleum & Natural Gas (AREA)
Organic Chemistry (AREA)
Inorganic Chemistry (AREA)
Lubricants (AREA)
Insulated Conductors (AREA)
Compositions Of Macromolecular Compounds (AREA)
Organic Insulating Materials (AREA)

EP91309533A 1990-10-16 1991-10-16 Silikon-Schmierfettzusammensetzungen zur Unterstützung der Wärmestrahlung Withdrawn EP0481758A1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP2278753A JP2511729B2 (ja)	1990-10-16	1990-10-16	シリコ―ングリ―スのクリ―プ防止方法及びそれに適した光硬化性シリコ―ングリ―ス組成物
JP278753/90		1990-10-16

Publications (1)

Publication Number	Publication Date
EP0481758A1 true EP0481758A1 (de)	1992-04-22

Family

ID=17601721

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP91309533A Withdrawn EP0481758A1 (de)	1990-10-16	1991-10-16	Silikon-Schmierfettzusammensetzungen zur Unterstützung der Wärmestrahlung

Country Status (2)

Country	Link
EP (1)	EP0481758A1 (de)
JP (1)	JP2511729B2 (de)

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EP0823451A1 (de) *	1996-08-09	1998-02-11	Shin-Etsu Chemical Co., Ltd.	Wärmeleitfähige Silikonzusammensetzung, thermisch leitendes Material und ein thermisch leitendes Silikonfett
WO2015148318A1 (en) *	2014-03-27	2015-10-01	3M Innovative Properties Company	Filled polydiorganosiloxane-containing compositions, and methods of using same
CN107964443A (zh) *	2017-11-24	2018-04-27	科特龙流体科技（扬州）有限公司	用于轴承的长寿命耐高温润滑脂
CN108559584A (zh) *	2018-06-12	2018-09-21	界首市皖俊轴承有限公司	一种延长轴承寿命的润滑脂稠化剂

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- 1990-10-16 JP JP2278753A patent/JP2511729B2/ja not_active Expired - Fee Related
1991
- 1991-10-16 EP EP91309533A patent/EP0481758A1/de not_active Withdrawn

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Cited By (10)

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Publication number	Priority date	Publication date	Assignee	Title
EP0823451A1 (de) *	1996-08-09	1998-02-11	Shin-Etsu Chemical Co., Ltd.	Wärmeleitfähige Silikonzusammensetzung, thermisch leitendes Material und ein thermisch leitendes Silikonfett
US5981641A (en) *	1996-08-09	1999-11-09	Shin-Etsu Chemical Co., Ltd.	Heat conductive silicone composition, heat conductive material and heat conductive silicone grease
WO2015148318A1 (en) *	2014-03-27	2015-10-01	3M Innovative Properties Company	Filled polydiorganosiloxane-containing compositions, and methods of using same
CN106164206A (zh) *	2014-03-27	2016-11-23	3M创新有限公司	填充的包含聚二有机硅氧烷的组合物及其使用方法
KR20160141766A (ko) *	2014-03-27	2016-12-09	쓰리엠 이노베이티브 프로퍼티즈 캄파니	충전된 폴리다이오가노실록산-함유 조성물, 및 그의 사용 방법
US9994754B2 (en) *	2014-03-27	2018-06-12	3M Innovative Properties Company	Filled polydiorganosiloxane-containing compositions, and methods of using same
CN106164206B (zh) *	2014-03-27	2019-12-10	3M创新有限公司	填充的包含聚二有机硅氧烷的组合物及其使用方法
CN107964443A (zh) *	2017-11-24	2018-04-27	科特龙流体科技（扬州）有限公司	用于轴承的长寿命耐高温润滑脂
CN107964443B (zh) *	2017-11-24	2021-05-04	科特龙流体科技（扬州）有限公司	用于轴承的长寿命耐高温润滑脂
CN108559584A (zh) *	2018-06-12	2018-09-21	界首市皖俊轴承有限公司	一种延长轴承寿命的润滑脂稠化剂

Also Published As

Publication number	Publication date
JP2511729B2 (ja)	1996-07-03
JPH04153295A (ja)	1992-05-26

Legal Events

Date	Code	Title	Description
1992-03-06	PUAI	Public reference made under article 153(3) epc to a published international application that has entered the european phase	Free format text: ORIGINAL CODE: 0009012
1992-04-22	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): DE FR GB
1992-11-25	17P	Request for examination filed	Effective date: 19920929
1993-04-14	17Q	First examination report despatched	Effective date: 19930225
1993-11-15	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN
1994-01-05	18D	Application deemed to be withdrawn	Effective date: 19930626

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JP4767409B2 (ja)	2011-09-07	放熱グリース
EP0481758A1 (de)	1992-04-22	Silikon-Schmierfettzusammensetzungen zur Unterstützung der Wärmestrahlung
JPS5869244A (ja)	1983-04-25	成形用エポキシ樹脂組成物
JPH04126767A (ja)	1992-04-27	紫外線硬化性オルガノポリシロキサン組成物
EP0492828A1 (de)	1992-07-01	Mischung von in UV-härtbaren Zusammensetzungen verwendbaren Klebstoffadditiven und diese enthaltende Zusammensetzungen
JPS6013841A (ja)	1985-01-24	成形用エポキシ樹脂組成物
JPH07207161A (ja)	1995-08-08	自己融着性シリコーンゴム組成物
JPS60120755A (ja)	1985-06-28	熱硬化性シリコ−ンゴム組成物
JPH02199170A (ja)	1990-08-07	室温硬化性オルガノポリシロキサン組成物
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JPS5827822B2 (ja)	1983-06-11	グリ−ス組成物
JPH11158377A (ja)	1999-06-15	シリコーンゴム組成物及び定着ロール