Patent US3943165A successfully refreshed from Google Patents.
US3943165A
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Esters of carboxymethyloxysuccinic acid and derivatives thereof
Assignee: Lever Brothers Co
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Filing: 1972-07-14
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Granted: 1976-03-09
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Expires: 1992-07-14
Abstract
Abstract There are disclosed herein novel ester compounds which can be used as detergent solvents and plasticizers for resins, the compounds having the general formula: ##EQU1## wherein R 1 is selected from the group consisting of --H and --CH 3 ; R 2 , R 3 and R 4 , which may be the same or different substituents, are selected from the group consisting of straight and branched chain alkyl groups having from 1 to 12 carbon atoms, benzyl and cyclohexyl; R 5 is selected from the group --H, --CH 3 and --C 2 H 5 ; and b=0 or 1.
Inventors
- 👤 Vincent Lamberti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:52
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/20; C11D3/2093; C07; C07C; C07C51/00; C07C51/347; C07C51/353; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/11
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
81 words
A compound having the formula ##EQU4## wherein R 1 is selected from the group consisting of --H and --CH 3 ; R 2 , R 3 and R 4 , which may be the same or different substituents, are selected from the group consisting of straight and branched chain alkyl groups having from 1 to 12 carbon atoms, benzyl and cyclohexyl; R 5 is selected from the group consisting of --H, --CH 3 and --C 2 H 5 ; and, b=0,1.
Claim 2
Dependent Claim
81 words
A compound having the formula ##EQU4## wherein R 1 is selected from the group consisting of --H and --CH 3 ; R 2 , R 3 and R 4 , which may be the same or different substituents, are selected from the group consisting of straight and branched chain alkyl groups having from 1 to 12 carbon atoms, benzyl and cyclohexyl; R 5 is selected from the group consisting of --H, --CH 3 and --C 2 H 5 ; and, b=0,1.
Claim 3
Dependent Claim
12 words
A compound as defined in claim 1 wherein R 1 is --H.
Claim 4
Dependent Claim
14 words
A compound as defined in claim 1 wherein R 1 is --CH 3 .
Claim 5
Dependent Claim
36 words
A compound as defined in claim 1 wherein R 2 , R 3 and R 4 are selected from the group consisting of straight and branched chain alkyl groups having from 1 to 12 carbon atoms.
Claim 6
Dependent Claim
38 words
A compound as defined in claim 1 wherein R 2 , R 3 and R 4 are selected from the group consisting of straight and branched chain alkyl groups having from 1 to 12 carbon atoms and benzyl.
Claim 7
Dependent Claim
38 words
A compound as defined in claim 1 wherein R 2 , R 3 and R 4 are selected from the group consisting of straight and branched chain alkyl groups having from 1 to 12 carbon atoms and cyclohexyl.
Claim 8
Dependent Claim
22 words
A compound as defined in claim 1 wherein R 5 is selected from the group consisting of --H and --CH 3 .
Claim 9
Dependent Claim
25 words
A compound as defined in claim 1 wherein R 5 is selected from the group consisting of --CH 3 and C 2 H 5 .
References Cited (Backward Citations)
US3635830A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-09 | 1979-09-08 | 1980-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-09 | 1983-09-08 | 1984-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-09 | 1987-09-08 | 1988-03-09 | $7700.00 | Window Closed / Lapsed |