US3853775A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricants
Assignee: Phillips Petroleum Co
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Filing: 1973-02-15
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Granted: 1974-12-10
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Expires: 1993-02-15
Abstract
Abstract The addition of a small amount of an alkyl sulfenyl N,N-dialkyl dithiocarbamate to lubricating oils, gear oils, greases, and the like improves the various properties thereof including the higher pressure properties, the stability of the so-treated lubricants against oxidation and rust, as well as antiwear properties, antiscuffing properties, and the like.
Inventors
- 👤 R Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:58
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/04; C10M2201/041; C10M2201/05; C10M2201/06; C10M2201/062; C10M2201/065; C10M2201/066; C10M2201/10; C10M2201/102; C10M2201/103; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/024; C10M2205/06; C10M2205/14; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/20; C10M2215/202; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/10; C10M2219/104; C10M2219/108; C10N; C10N2010/00; C10N2010/02; C10N2010/06; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/02; C10N2040/135; C10N2040/14; C10N2040/16; C10N2040/17; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
77 words
AN IMPROVED LUBRICATING COMPOSITION COMPRISING A MINERAL LUBRICATING OIL HAVING INCORPORATED THEREIN A SAMLL QUANTITY OF AN ALKYL SULFENYL DIALKYL DITHIOCARBAMATE HAVING THE FORMULA R-S-S-C(S)-N(R'')2 WHEREIN R IS AN ALKYL RADICAL HAVING 1-10, INCLUSIVE, CARBON ATOMS AND R AND R'' ARE RADICAL HAVING 1-5, INCLUSIVE, CARBON ATOMS AND R AND R'' ARE THE SAME OR DIFFERENT, SUFFICIENT TO IMPROVE THE HIGH PRRESSURE PROPERTIES AND TO INCREASE THE STANILITY OF THE SO-TREATED LUBRICATING OIL AGAINST OXIDATION AND RUST.
Claim 2
Dependent Claim
77 words
AN IMPROVED LUBRICATING COMPOSITION COMPRISING A MINERAL LUBRICATING OIL HAVING INCORPORATED THEREIN A SAMLL QUANTITY OF AN ALKYL SULFENYL DIALKYL DITHIOCARBAMATE HAVING THE FORMULA R-S-S-C(S)-N(R'')2 WHEREIN R IS AN ALKYL RADICAL HAVING 1-10, INCLUSIVE, CARBON ATOMS AND R AND R'' ARE RADICAL HAVING 1-5, INCLUSIVE, CARBON ATOMS AND R AND R'' ARE THE SAME OR DIFFERENT, SUFFICIENT TO IMPROVE THE HIGH PRRESSURE PROPERTIES AND TO INCREASE THE STANILITY OF THE SO-TREATED LUBRICATING OIL AGAINST OXIDATION AND RUST.
Claim 3
Dependent Claim
21 words
A composition according to claim 1 wherein the quantity of alkyl sulfenyl dialkyl dithiocarbamate ranges from 0.1 to 5 weight percent.
Claim 4
Dependent Claim
24 words
A composition according to claim 1 wherein said mineral lburicating oil has been thickened with an alkali metal soap to form a grease formulation.
Claim 5
Dependent Claim
16 words
A composition according to claim 2 wherein the alkyl sulfenyl dialkyl dithiocarbamate is N,N-dimethyl t-butylsulfenyl dithiocarbamate.
Claim 6
Dependent Claim
31 words
A composition according to claim 3 wherein said grease additionally contains polyethylene, said dithiocarbamate is N,N-dimethyl t-butylsulfenyl dithiocarbamate, and the amount of said dithiocarbamate is in the range 1-5 weight percent.
Claim 7
Dependent Claim
74 words
An improved lubricating composition comprising a mineral lubricating oil having incorporated therein at least one alkyl sulfenyl N,N-dialkyl dithiocarbamate having the formula R-S-S-C(S)-N(R'')2 wherein R is an alkyl radical having 1-14, inclusive, carbon atoms and R'' is an alkyl radical having 1-5, inclusive, carbon atoms, and wherein R and R'' are the same or different in a finite amount sufficient to improve at least one of the physical properties of the resulting lubricating composition.
Claim 8
Dependent Claim
74 words
An improved lubricating composition comprising a mineral lubricating oil having incorporated therein at least one alkyl sulfenyl N,N-dialkyl dithiocarbamate having the formula R-S-S-C(S)-N(R'')2 wherein R is an alkyl radical having 1-14, inclusive, carbon atoms and R'' is an alkyl radical having 1-5, inclusive, carbon atoms, and wherein R and R'' are the same or different in a finite amount sufficient to improve at least one of the physical properties of the resulting lubricating composition.
Claim 9
Dependent Claim
21 words
A composition according to claim 6 wherein the quantity of alkyl sulfenyl dialkyl dithiocarbamate ranges from 0.05 to 5 weight percent.
Claim 10
Dependent Claim
24 words
A composition according to claim 6 wherein said mineral lubricating oil has been thickened with an alkali metal soap to form a grease formulation.
Claim 11
Dependent Claim
23 words
A composition according to claim 7 wherein the alkyl sulfenyl dialkyl dithiocarbamate is N,N-dimethyl t-butylsulfenyl dithiocarbamate, t-octylsulfenyl N,N-dimethyldithiocarbamate, t-nonylsulfenyl N,N-dimethyldithiocarbamate, or t-dodecylsulfenyl N,N-dimethyldithiocarbamate.
Claim 12
Dependent Claim
20 words
A composition according to claim 8 wherein said dithiocarbamate is N,N-dimethyl t-butylsulfenyl dithiocarbamate, t-octylsulfenyl N,N-dimethyldithiocarbamate, t-nonylsulfenyl N,N-dimethyldithiocarbamate, or t-dodecylsulfenyl N,N-dimethyldithiocarbamate.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-12-09 | 1978-06-10 | 1978-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-09 | 1982-06-10 | 1982-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-09 | 1986-06-10 | 1986-12-10 | $7700.00 | Window Closed / Lapsed |