US3970698A
Expired / Lapsed
US
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Hydroxy ether carboxylates
Assignee: Monsanto Co
•
Filing: 1973-12-19
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Granted: 1976-07-20
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Expires: 1993-12-19
Abstract
Abstract Hydroxy ether carboxylates represented by the formula COOMCOOM ¦¦ HO-CH2-C-O-C-A ¦¦ COOMCOOM wherein M is alkali metal, ammonium, alkyl ammonium or alkanol ammonium and A is hydrogen, methyl, ethyl, or CH2OH, are useful as complexing agents and detergency builders. The ester and acid forms of such compounds are useful as intermediates for preparation of the salts.
Inventors
- 👤 Kent P. Lannert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:38
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/20; C11D3/2075; C11D3/2089; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C07; C07C; C07C59/00; C07C59/235; C07C59/305
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
60 words
Compounds represented by the formula ##EQU12## wherein A is selected from the group consisting of hydrogen, methyl, ethyl and --CH 2 OH and X is selected from the group consisting of hydrogen, alkali metal, ammonium, alkyl ammonium containing 1 to 4 carbon atoms alkanol ammonium containing 1 to 4 carbon atoms, and alkyl groups containing 1 to 20 carbon atoms.
Claim 2
Dependent Claim
60 words
Compounds represented by the formula ##EQU12## wherein A is selected from the group consisting of hydrogen, methyl, ethyl and --CH 2 OH and X is selected from the group consisting of hydrogen, alkali metal, ammonium, alkyl ammonium containing 1 to 4 carbon atoms alkanol ammonium containing 1 to 4 carbon atoms, and alkyl groups containing 1 to 20 carbon atoms.
Claim 3
Dependent Claim
9 words
Compounds according to claim 1 wherein X is sodium.
Claim 4
Dependent Claim
11 words
Compounds according to claim 1 wherein A is CH 2 OH.
References Cited (Backward Citations)
DE2248708A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |