US4196091A
Expired / Lapsed
US
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Lactam carboxylic acids, their method of preparation and use
Assignee: Afton Chemical Additives Corp
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Filing: 1977-12-27
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Granted: 1980-04-01
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Expires: 1997-12-27
Abstract
Abstract This invention relates to hydrocarbyl lactam-carboxylic acids prepared by a reaction of a hydrocarbyl succinic anhydride with an imine and their use as corrosion inhibitors in crankcase lubricant compositions.
Inventors
- 👤 Raymond C. Schlicht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:23
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D207/273; C07D207/277; C10; C10M; C10M133/00; C10M133/02; C10M133/38; C10M133/44; C10M133/52; C10M133/58; C10M2203/00; C10M2203/10; C10M2205/00; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/08; C10M2215/082; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2219/00; C10M2219/04; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/06; C10M2223/065; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/04; C10N2020/00; C10N2020/01; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
53 words
A lubricant oil composition comprising an oil of lubricating viscosity, and an effective dispersant and rust inhibiting amount of an isomeric mixture of a lactam acid, said lactam acid being selected from the group consisting of: 1. 2(3) polybutenyl-3-carboxy-4-phenyl-5(N,N-dimethylaminopropyl) butyrolactam, in which said polybutenyl radical has from 10 to 300 carbon atoms, 2.
Claim 2
Dependent Claim
53 words
A lubricant oil composition comprising an oil of lubricating viscosity, and an effective dispersant and rust inhibiting amount of an isomeric mixture of a lactam acid, said lactam acid being selected from the group consisting of: 1. 2(3) polybutenyl-3-carboxy-4-phenyl-5(N,N-dimethylaminopropyl) butyrolactam, in which said polybutenyl radical has from 10 to 300 carbon atoms, 2.
Claim 3
Dependent Claim
21 words
1,2-ethylene bis[2(3) polybutenyl-3-carboxy-4-phenyl-butyrolactam-5] in which said polybutenyl radical has from 10 to 300 carbon atoms, and 3. 1,6-hexylene bis[2(3) polybutenyl-3-carboxy-4-phenyl-butyrolactam-5] in
Claim 4
Dependent Claim
21 words
1,2-ethylene bis[2(3) polybutenyl-3-carboxy-4-phenyl-butyrolactam-5] in which said polybutenyl radical has from 10 to 300 carbon atoms, and 3. 1,6-hexylene bis[2(3) polybutenyl-3-carboxy-4-phenyl-butyrolactam-5] in
Claim 5
Dependent Claim
29 words
which said polybutenyl radical has from 10 to 300 carbon atoms. 2. A lubricant oil composition as claimed in claim 1 wherein said lactam acid is 1,2-ethylene bis-[2(3)-polybutenyl-3-carboxy-4-phenyl butyrolactam-5].
Claim 6
Dependent Claim
16 words
A lubricant oil composition as claimed in claim 1 wherein said lactam acid is 1,6-hexylene-bis-[2,(3)-polybutenyl-3-carboxy-4-phenyl butyrolactam-5].
Claim 7
Dependent Claim
16 words
A lubricant oil composition as claimed in claim 1 wherein said lactam acid is 2(3)-polybutenyl-3-carboxy-4-phenyl-5(N,N-dimethylaminopropyl) butyrolactam.
Claim 8
Dependent Claim
58 words
A lactam acid selected from the group consisting of: 1. 2(3) polybutenyl-3-carboxy-4-phenyl-5(N,N-dimethylaminopropyl) butyrolactam, in which said polybutenyl radical has from 10 to 300 carbon atoms, 2. 1,2-ethylene bis[2(3) polybutenyl-3-carboxy-4-phenyl-butyrolactam-5] in which said polybutenyl radical has from 10 to 300 carbon atoms, and 3. 1,6-hexylene bis[2(3) polybutenyl-3-carboxy-4-phenyl-butyrolactam-5] in which said polybutenyl radical has from 10 to 300 carbon atoms.
Claim 9
Dependent Claim
58 words
A lactam acid selected from the group consisting of: 1. 2(3) polybutenyl-3-carboxy-4-phenyl-5(N,N-dimethylaminopropyl) butyrolactam, in which said polybutenyl radical has from 10 to 300 carbon atoms, 2. 1,2-ethylene bis[2(3) polybutenyl-3-carboxy-4-phenyl-butyrolactam-5] in which said polybutenyl radical has from 10 to 300 carbon atoms, and 3. 1,6-hexylene bis[2(3) polybutenyl-3-carboxy-4-phenyl-butyrolactam-5] in which said polybutenyl radical has from 10 to 300 carbon atoms.
Claim 10
Dependent Claim
16 words
A lactam acid as claimed in claim 5 wherein said acid is 1,2-ethylene-bis-[2 or 3-alkenyl-3-carboxy-4-phenyl butyrolactam-5].
Claim 11
Dependent Claim
16 words
A lactam acid as claimed in claim 5 wherein said acid is 1,6-hexylene-bis-[2 or 3-alkenyl-3-carboxy-4-phenyl butyrolactam-5].
Claim 12
Dependent Claim
16 words
A lactam acid as claimed in claim 5 wherein said acid is 2 or 3-alkenyl-3-carboxy-4-phenyl-5(N,N-dimethylaminopropyl) butyrolactam.
Claim 13
Dependent Claim
15 words
A lactam acid as claimed in claim 5 wherein said acid is 1',2'-ethylene bis[2-polybutenyl-3-carboxy-4-phenyl butyrolactam-5].
Claim 14
Dependent Claim
14 words
A lactam acid as claimed in claim 5 wherein said acid is 1',6'-hexylene-bis-[2-polybutenyl-3-carboxy-4-phenyl butyrolactam-5].
Claim 15
Dependent Claim
14 words
A lactam acid as claimed in claim 5 wherein said acid is 2-polybutenyl-3-carboxy-4-phenyl-5-(N,N-dimethylaminopropyl) butyrolactam.
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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) | 1983-04-01 | 1983-10-01 | 1984-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-01 | 1987-10-01 | 1988-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-01 | 1991-10-01 | 1992-04-01 | $7700.00 | Window Closed / Lapsed |