US4263155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant composition containing alkali metal borate and stabilizing oil-soluble acid
Assignee: Chevron USA Inc
•
Filing: 1980-01-07
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Granted: 1981-04-21
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Expires: 2000-01-07
Abstract
Abstract Disclosed is a lubricant composition containing an oil of lubricating viscosity having dispersed therein a particulate hydrated alkali metal borate and an effective amount oil soluble acid which stabilizes the composition against the adverse effects of water contamination.
Inventors
- 👤 Kenneth Frost
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:38
CPC Classifications
C; C10; C10M; C10M141/00; C10M2201/00; C10M2201/087; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/123; C10M2207/124; C10M2207/125; C10M2207/128; C10M2207/129; C10M2207/14; C10M2207/141; C10M2207/16; C10M2207/22; C10M2207/24; C10M2219/00; C10M2219/04; C10M2219/042; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/085; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/043; C10M2223/06; C10M2223/061; C10M2223/065
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
67 words
A lubricant composition comprising an oil of lubricating viscosity having dispersed therein: (a) 0.1 to 60 weight percent of a particulate hydrated alkali metal borate and (b) 0.01 to 5.0 weight percent of an oil soluble acid of the formula: ##STR3## and R is an oil-solubilizing group containing at least 4 carbon atoms, and R' is H or an oil-solubilizing group containing at least 4 carbon atoms.
Claim 2
Dependent Claim
67 words
A lubricant composition comprising an oil of lubricating viscosity having dispersed therein: (a) 0.1 to 60 weight percent of a particulate hydrated alkali metal borate and (b) 0.01 to 5.0 weight percent of an oil soluble acid of the formula: ##STR3## and R is an oil-solubilizing group containing at least 4 carbon atoms, and R' is H or an oil-solubilizing group containing at least 4 carbon atoms.
Claim 3
Dependent Claim
19 words
The lubricant composition of claim 1 having dispersed therein 0.1 to 2.0 weight percent of said oil soluble acid.
Claim 4
Dependent Claim
13 words
The lubricant composition of claim 1 wherein said acid is a carboxylic acid.
Claim 5
Dependent Claim
21 words
The lubricant composition of claim 3 wherein said carboxylic acid is selected from tetrapropenylsuccinic acid, oleic acid, and the naphthenic acid.
Claim 6
Dependent Claim
13 words
The lubricant composition of claim 1 wherein said acid is a phosphorus-containing acid.
Claim 7
Dependent Claim
12 words
The lubricant composition of claim 5 wherein said phosphorus-containing acid is dioleylhydrogenphosphate.
Claim 8
Dependent Claim
13 words
The lubricant composition of claim 1 wherein said acid is a sulfur-containing acid.
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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) | 1984-04-20 | 1984-10-20 | 1985-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-20 | 1988-10-20 | 1989-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-20 | 1992-10-20 | 1993-04-21 | $7700.00 | Window Closed / Lapsed |