US4182715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amine derivatives of substituted gamma-butyrolactones
Assignee: Mobil Oil AS
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Filing: 1978-02-02
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Granted: 1980-01-08
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Expires: 1998-02-02
Abstract
Abstract Gamma-alkyl-gamma-butyrolactones having an alkyl substituent of at least 16 carbon atoms in length are reacted with amines or polyalkylenepolyamines, providing novel lactams useful as multifunctional agents in lubricants, fuels, coolants and other organic fluids.
Inventors
- 👤 El-Ahmadi I. Heiba
- 👤 Ralph M. Dessau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:00
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22; C07D207/24; C07D207/26; C07D207/263; C07D207/27; C07D315/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A compound having the structure: ##STR11## wherein the alkyl group has from 16 to 100 carbon atoms; R, R' and R" are individually selected from the group consisting of hydrogen, methyl and ethyl; and --N represents one of the two terminal amino nitrogen atoms of a polyalkylenepolyamine H 2 N(C 2 H 4 NH) m H wherein m is 3 or 4.
Claim 2
Dependent Claim
62 words
A compound having the structure: ##STR11## wherein the alkyl group has from 16 to 100 carbon atoms; R, R' and R" are individually selected from the group consisting of hydrogen, methyl and ethyl; and --N represents one of the two terminal amino nitrogen atoms of a polyalkylenepolyamine H 2 N(C 2 H 4 NH) m H wherein m is 3 or 4.
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) | 1983-01-07 | 1983-07-09 | 1984-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-07 | 1987-07-09 | 1988-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-07 | 1991-07-09 | 1992-01-08 | $7700.00 | Window Closed / Lapsed |