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US4253982A
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Lubricant compositions
Assignee: Mobil Oil AS
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Filing: 1975-08-01
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Granted: 1981-03-03
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Expires: 1995-08-01
Abstract
Abstract Lubricant compositions are provided containing antiwear improving amounts of a bis-oxazoline having an alkyl group containing from about 4 to about 24 carbon atoms.
Inventors
- 👤 Robert F. Bridger
- 👤 Kirk D. Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:27
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07D; C07D263/00; C07D263/02; C07D263/08; C07D263/10; C07D263/14; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/028; C10M2207/00; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/286; C10M2207/287; C10M2207/288; C10M2207/289; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2215/00; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10N; C10N2040/00; C10N2040/02; C10N2040/08; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
68 words
A lubricant composition comprising an oil of lubricating viscosity or grease prepared therefrom containing a minor antiwear improving amount of a bis-oxazoline having an alkyl group containing from 4 to 24 carbon atoms wherein said bis-oxazoline is obtained by reacting tris(hydroxymethyl) aminomethane with an alkylsuccinic anhydride, having from 4 to 24 carbon atoms in the alkyl group, in a mole ratio of from about 0.5:1 to about 2:1.
Claim 2
Dependent Claim
68 words
A lubricant composition comprising an oil of lubricating viscosity or grease prepared therefrom containing a minor antiwear improving amount of a bis-oxazoline having an alkyl group containing from 4 to 24 carbon atoms wherein said bis-oxazoline is obtained by reacting tris(hydroxymethyl) aminomethane with an alkylsuccinic anhydride, having from 4 to 24 carbon atoms in the alkyl group, in a mole ratio of from about 0.5:1 to about 2:1.
Claim 3
Dependent Claim
23 words
The lubricant composition defined in claim 1 wherein the bis-oxazoline is present in an amount from about 0.001% to about 10%, by weight.
Claim 4
Dependent Claim
23 words
The lubricant composition defined in claim 1 wherein the bis-oxazoline is present in an amount from about 0.1% to about 2%, by weight.
Claim 5
Dependent Claim
21 words
The lubricant composition defined in claim 1 wherein the bis-oxazoline has a molecular weight of from about 250 to about 900.
Claim 6
Dependent Claim
21 words
The lubricant composition defined in claim 1 wherein the bis-oxazoline has a molecular weight of from about 400 to about 700.
Claim 7
Dependent Claim
16 words
The lubricant composition defined in claim 1 wherein said lubricant comprises an oil of lubricating viscosity.
Claim 8
Dependent Claim
13 words
The lubricant composition defined in claim 1 wherein said lubricant comprises a grease.
Claim 9
Dependent Claim
12 words
The lubricant composition defined in claim 1 wherein the bis-oxazoline is 1,2-bis[4,4-bis(hydroxymethyl)oxazolinyl]decane.
Claim 10
Dependent Claim
13 words
The lubricant composition defined in claim 1 wherein the bis-oxazoline is 1,2-bis[4,4-bis(hydroxymethyl) oxazolinyl]docosane.
Claim 11
Dependent Claim
17 words
The lubricant composition of claim 1 wherein said molar ratio of tris(hydroxymethyl)aminomethane to alkylsuccinic anhydride is 2:1.
Claim 12
Dependent Claim
32 words
A bis-oxazoline prepared by reacting tris(hydroxymethyl)aminomethane with an alkylsuccinic anhydride, having from 4 to 24 carbon atoms in the alkyl group, in a mole ratio of from about 0.5:1 to about 2:1.
Claim 13
Dependent Claim
32 words
A bis-oxazoline prepared by reacting tris(hydroxymethyl)aminomethane with an alkylsuccinic anhydride, having from 4 to 24 carbon atoms in the alkyl group, in a mole ratio of from about 0.5:1 to about 2:1.
Claim 14
Dependent Claim
18 words
The bis-oxazoline defined in claim 11 wherein said mole ratio of tris(hydroxymethyl) aminomethane to alkylsuccinic anhydride is 2:1.
Claim 15
Dependent Claim
11 words
The bis-oxazoline defined in claim 11 wherein said bis-oxazoline is 1,2-bis[4,4-bis(hydroxymethyl)oxazolinyl]decane.
Claim 16
Dependent Claim
11 words
The bis-oxazoline defined in claim 11 wherein said bis-oxazoline is 1,2-bis[4,4-bis(hydroxymethyl)oxazolinyl]docosane.
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) | 1984-03-02 | 1984-09-01 | 1985-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-02 | 1988-09-01 | 1989-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-02 | 1992-09-01 | 1993-03-03 | $7700.00 | Window Closed / Lapsed |