Patent US4728450A successfully refreshed from Google Patents.
US4728450A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Torque grease
Assignee: Momentive Performance Materials Japan LLC
•
Filing: 1984-06-21
•
Granted: 1988-03-01
•
Expires: 2004-06-21
Abstract
Abstract A torque grease comprising: (A) 100 parts by weight of a polyorganosiloxane represented by the general formula: <IMAGE> wherein R1 is a C(1-12) monovalent radical selected from the group consisting of alkyl radicals, alkenyl radicals, and substituted or unsubstituted aryl radicals; a equals 1.9 to 2.7; n is a positive number; and (B) 10 to 200 parts by weight of a polyorganosilsesquioxane represented by the general formula: R2SiO3/2 wherein R2 is a monovalent radical selected from the group consisting of alkyl radicals, alkenyl radicals and substituted or unsubstituted aryl radicals.
Inventors
- 👤 Masanori Toya
- 👤 Hiroshi Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:58
CPC Classifications
C; C10; C10M; C10M107/00; C10M107/50; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/042; C10M2201/06; C10M2201/065; C10M2201/066; C10M2201/10; C10M2201/105; C10M2211/00; C10M2211/06; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2229/00; C10M2229/02; C10M2229/025; C10M2229/04; C10M2229/0405; C10M2229/041; C10M2229/0415; C10M2229/042; C10M2229/0425; C10M2229/043; C10M2229/0435; C10M2229/044; C10M2229/0445; C10M2229/045; C10M2229/0455; C10M2229/046; C10M2229/0465; C10M2229/047; C10M2229/0475; C10M2229/048; C10M2229/0485; C10M2229/05; C10M2229/0505; C10M2229/051; C10M2229/0515; C10M2229/052; C10M2229/0525; C10M2229/053; C10M2229/0535; C10M2229/054; C10M2229/0545; C10N; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
92 words
A torque grease comprising: (A) 100 parts by weight of a polyorganosiloxane represented by the general formula: ##EQU2## wherein R 1 is a C.sub.(1-12) monovalent radical selected from the group consisting of alkyl radicals, alkenyl radicals, and substituted or unsubstituted aryl radicals; a equals 1.9 to 2.7; n is a positive number; and (B) 10 to 200 parts by weight of a polyorganosilsesquioxane represented by the general formula: R.sup.2 SiO.sub.3/2 wherein R 2 is a monovalent selected from the group consisting of alkyl radicals, alkenyl radicals and substituted or unsubstituted aryl radicals.
Claim 2
Dependent Claim
92 words
A torque grease comprising: (A) 100 parts by weight of a polyorganosiloxane represented by the general formula: ##EQU2## wherein R 1 is a C.sub.(1-12) monovalent radical selected from the group consisting of alkyl radicals, alkenyl radicals, and substituted or unsubstituted aryl radicals; a equals 1.9 to 2.7; n is a positive number; and (B) 10 to 200 parts by weight of a polyorganosilsesquioxane represented by the general formula: R.sup.2 SiO.sub.3/2 wherein R 2 is a monovalent selected from the group consisting of alkyl radicals, alkenyl radicals and substituted or unsubstituted aryl radicals.
Claim 3
Dependent Claim
17 words
A torque grease according to claim 1 wherein R 1 of polyorganosiloxane (A) is a methyl group.
Claim 4
Dependent Claim
21 words
A torque grease according to claim 1 wherein polyorganosiloxane (A) has a viscosity of 50 to 500,000 cSt at 25° C.
Claim 5
Dependent Claim
21 words
A torque grease according to claim 2 wherein polyorganosiloxane (A) has a viscosity of 50 to 500,000 cSt at 25° C.
Claim 6
Dependent Claim
13 words
A torque grease according to claim 1 wherein the polyorganosilsesquioxane (B) is polymethylsilsesquioxane.
Claim 7
Dependent Claim
13 words
A torque grease according to claim 2 wherein the polyorganosilsesquioxane (B) is polymethylsilsesquioxane.
Claim 8
Dependent Claim
13 words
A torque grease according to claim 3 wherein the polyorganosilsesquioxane (B) is polymethylsilsesquioxane.
Claim 9
Dependent Claim
13 words
A torque grease according to claim 4 wherein the polyorganosilsesquioxane (B) is polymethylsilsesquioxane.
References Cited (Backward Citations)
US2599984A
Cited
US2614989A
Cited
US3145175A
Cited
US3334120A
Cited
US3288712A
Cited
US3291735A
Cited
US3304259A
Cited
US3518188A
Cited
US3542732A
Cited
US3671429A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-01 | 1991-08-31 | 1992-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-01 | 1995-08-31 | 1996-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-01 | 1999-08-31 | 2000-03-01 | $7700.00 | Window Closed / Lapsed |