US3932290A
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US
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Phosphorus-containing friction modifiers for functional fluids
Assignee: Lubrizol Corp
•
Filing: 1973-10-04
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Granted: 1976-01-13
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Expires: 1993-10-04
Abstract
Abstract Compositions prepared by the reaction of a di-(lower alkyl) phosphite with a C 10 -20 epoxide in the presence of a strongly alkaline reagent are useful as friction-reducing additives in functional fluids, especially automatic transmission fluids.
Inventors
- 👤 Frederick William Koch
- 👤 Jerry Lee Musser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:02
CPC Classifications
C; C10; C10M; C10M137/00; C10M137/12; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4006; C10M137/02; C10M2203/00; C10M2203/02; C10M2203/022; C10M2203/024; C10M2203/04; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/282; C10M2207/283; C10M2207/287; C10M2207/288; C10M2207/289; C10M2207/30; C10M2207/302; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/106; C10M2209/107; C10M2209/108; C10M2209/109; C10M2209/11; C10M2209/111; C10M2209/12; C10M2211/00; C10M2211/02; C10M2211/022; C10M2211/06; C10M2211/08; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/06; C10M2215/064; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/10; C10M2215/102; C10M2215/12; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/024; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/06; C10M2219/062; C10M2219/064; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/083; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/065; C10M2223/12; C10M2225/00; C10M2225/02; C10M2225/04; C10M2225/041; C10M2227/00; C10M2227/02; C10M2227/06; C10M2227/061; C10M2227/063; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/042; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048; C10M2229/05; C10M2229/051; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2040/00; C10N2040/04; C10N2040/044; C10N2040/046; C10N2040/06; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
103 words
A functional fluid composition comprising a major amount of a lubricating oil and a minor friction-reducing amount of the product obtained by reacting, at a temperature above about 100°C. and below the decomposition temperature of the reaction mixture, and in the presence of a strongly alkaline reagent, at least one phosphorus compound of the formula ##EQU4## wherein each of R 1 and R 2 is a lower alkyl radical, with at least one epoxide of the formula ##EQU5## wherein R 3 is an alkyl radical having 10-20 carbon atoms; about 1.0-1.5 moles of said epoxide being present per mole of said phosphorus compound.
Claim 2
Dependent Claim
103 words
A functional fluid composition comprising a major amount of a lubricating oil and a minor friction-reducing amount of the product obtained by reacting, at a temperature above about 100°C. and below the decomposition temperature of the reaction mixture, and in the presence of a strongly alkaline reagent, at least one phosphorus compound of the formula ##EQU4## wherein each of R 1 and R 2 is a lower alkyl radical, with at least one epoxide of the formula ##EQU5## wherein R 3 is an alkyl radical having 10-20 carbon atoms; about 1.0-1.5 moles of said epoxide being present per mole of said phosphorus compound.
Claim 3
Dependent Claim
24 words
A composition according to claim 1 wherein the epoxide is derived from a commercial mixture of C 14 and C 16 straight chain α-olefins.
Claim 4
Dependent Claim
15 words
A composition according to claim 2 wherein R 1 and R 2 are n-butyl radicals.
References Cited (Backward Citations)
US2856369A
Cited
US3166504A
Cited
US3247113A
Cited
US3267149A
Cited
GB1098315A
Cited
US3502749A
Cited
GB1203648A
Cited
US3600470A
Cited
US3626035A
Cited
US3591501A
Cited
US3748363A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-12 | 1979-07-14 | 1980-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-12 | 1983-07-14 | 1984-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-12 | 1987-07-14 | 1988-01-13 | $7700.00 | Window Closed / Lapsed |