US4159957A
Expired / Lapsed
US
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Mannich base dispersant combination
Assignee: Chevron USA Inc
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Filing: 1978-06-30
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Granted: 1979-07-03
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Expires: 1998-06-30
Abstract
Abstract A lubricating oil of outstanding detergency contains an alkaline earth metal aliphatic sulfonate and a Mannich base condensation product.
Inventors
- 👤 Louis De Vries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:44
CPC Classifications
C; C10; C10M; C10M141/00; C10M141/10; C10M141/08; C10M163/00; C10M2203/00; C10M2203/10; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/28; C10M2207/282; C10M2207/287; C10M2207/288; C10M2207/289; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/10; C10M2211/00; C10M2211/08; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/086; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/083; C10M2221/00; C10M2221/04; C10M2221/041; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/065; C10M2223/12; C10M2227/00; C10M2227/06; C10M2227/061; C10M2227/063; C10N; C10N2010/00; C10N2010/04; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/08; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
58 words
A lubricating oil composition comprising an oil of lubricating viscosity and (A) from 2.5 to 50 millimols per kilogram of an alkaline earth metal substantially saturated aliphatic sulfonate wherein the aliphatic group contains from about 50 to 300 carbon atoms, and (B) from 0.5 to 20 weight percent of a high-molecular-weight Mannich base or a borated complex thereof.
Claim 2
Dependent Claim
58 words
A lubricating oil composition comprising an oil of lubricating viscosity and (A) from 2.5 to 50 millimols per kilogram of an alkaline earth metal substantially saturated aliphatic sulfonate wherein the aliphatic group contains from about 50 to 300 carbon atoms, and (B) from 0.5 to 20 weight percent of a high-molecular-weight Mannich base or a borated complex thereof.
Claim 3
Dependent Claim
13 words
The composition of claim 1 wherein said aliphatic group is a polyolefin-derived group.
Claim 4
Dependent Claim
39 words
The composition of claim 2 wherein said Mannich base is a borated Mannich base prepared from an alkylphenol, formaldehyde and the condensation product of tetraethylene pentamine and urea and said aliphatic group is derived from polybutylene, polyisobutylene or polypropylene.
Claim 5
Dependent Claim
49 words
The composition of claim 3 comprising from 10 to 30 millimols per kilogram of said sulfonate wherein said alkaline earth metal is calcium or magnesium, said aliphatic group is derived from polyisobutylene of 50 to 100 carbon atoms, and from 2 to 10 weight percent of said Mannich base.
Claim 6
Dependent Claim
57 words
A lubricating oil concentrate comprising an oil of lubricating viscosity and (A) from 25 to 100 millimols per kilogram of an alkaline earth metal substantially saturated aliphatic sulfonate wherein said aliphatic group contains about 50 to 300 carbon atoms, and (B) from 5 to 80 weight percent of a high-molecular-weight Mannich base or a borated complex thereof.
Claim 7
Dependent Claim
57 words
A lubricating oil concentrate comprising an oil of lubricating viscosity and (A) from 25 to 100 millimols per kilogram of an alkaline earth metal substantially saturated aliphatic sulfonate wherein said aliphatic group contains about 50 to 300 carbon atoms, and (B) from 5 to 80 weight percent of a high-molecular-weight Mannich base or a borated complex thereof.
Claim 8
Dependent Claim
15 words
The concentrate of claim 5 wherein said aliphatic group is derived from a polyolefin group.
Claim 9
Dependent Claim
30 words
The concentrate of claim 6 wherein said Mannich base is a borated Mannich base prepared from an alkylphenol, formaldehyde and said aliphatic group is derived from polybutylene, polyisobutylene, or polypropylene.
Claim 10
Dependent Claim
28 words
The concentrate of claim 7 wherein said alkaline earth metal is calcium or magnesium, and said aliphatic group is derived from polyisobutylene of 50 to 100 carbon atoms.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-07-02 | 1983-01-01 | 1983-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-07-02 | 1987-01-01 | 1987-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-07-02 | 1991-01-01 | 1991-07-03 | $7700.00 | Window Closed / Lapsed |