Patent US4048082A successfully refreshed from Google Patents.
US4048082A
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Organic lubricating compositions containing esters of benzotriazole
Assignee: Mobil Oil AS
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Filing: 1975-07-17
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Granted: 1977-09-13
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Expires: 1995-07-17
Abstract
Abstract Organic compositions are provided containing anti-rust amounts of esters of adducts of benzotriazole and unsaturated dicarboxylic acids or anhydrides thereof.
Inventors
- 👤 John C. Nnadi
- 👤 Phillip S. Landis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:15
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07D; C07D249/00; C07D249/16; C07D249/18; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/028; C10M2207/00; C10M2207/04; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2211/00; C10M2211/02; C10M2215/00; C10M2215/10; C10M2215/102; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2227/00; C10M2227/02; C10M2227/04; C10M2227/08; C10M2227/081; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/02; C10N2040/08; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
95 words
An organic composition comprising oils of lubricating viscosity or greases prepared therefrom containing a minor anti-rust improving amount of an oil-soluble ester of an adduct of benzotriazole and an unsaturated dicarboxylic acid or anhydride thereof selected from the group consisting essentially of maleic anhydride, fumaric acid and acetylene dicarboxylic acid prepared by reacting said benzotriazole and said unsaturated dicarboxylic acid or anhydride thereof in a mole ratio of from about 0.5:1 to about 2:1 benzotriazole to acid or anhydride at a temperature of from about 80 to about 250° C and thereafter esterifying said adduct.
Claim 2
Dependent Claim
95 words
An organic composition comprising oils of lubricating viscosity or greases prepared therefrom containing a minor anti-rust improving amount of an oil-soluble ester of an adduct of benzotriazole and an unsaturated dicarboxylic acid or anhydride thereof selected from the group consisting essentially of maleic anhydride, fumaric acid and acetylene dicarboxylic acid prepared by reacting said benzotriazole and said unsaturated dicarboxylic acid or anhydride thereof in a mole ratio of from about 0.5:1 to about 2:1 benzotriazole to acid or anhydride at a temperature of from about 80 to about 250° C and thereafter esterifying said adduct.
Claim 3
Dependent Claim
23 words
The composition defined in claim 1 wherein the ester adduct is present in an amount from about 0.001% to about 20%, by weight.
Claim 4
Dependent Claim
23 words
The composition defined in claim 1 wherein the ester adduct is present in an amount from about 0.5% to about 5%, by weight.
Claim 5
Dependent Claim
15 words
The composition defined in claim 1 wherein said composition comprises an oil of lubricating viscosity.
Claim 6
Dependent Claim
12 words
The composition defined in claim 1 wherein said composition comprises a grease.
Claim 7
Dependent Claim
14 words
The composition defined in claim 1 wherein the unsaturated acid anhydride is maleic anhydride.
Claim 8
Dependent Claim
13 words
The composition defined in claim 1 wherein the unsaturated acid is fumaric acid.
Claim 9
Dependent Claim
14 words
The composition defined in claim 1 wherein the unsaturated acid is acetylene dicarboxylic acid.
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) | 1980-09-12 | 1981-03-14 | 1981-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-09-12 | 1985-03-14 | 1985-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-09-12 | 1989-03-14 | 1989-09-13 | $7700.00 | Window Closed / Lapsed |