US4013714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Substituted bis-(dicarboxymethyl)-ethers
Assignee: Monsanto Co
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Filing: 1973-12-19
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Granted: 1977-03-22
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Expires: 1993-12-19
Abstract
Abstract Compounds represented by the formula ##EQU1## wherein Rx is ##EQU2## AND A is hydrogen, methyl, ethyl, CH 2 OH or RxOH; M being alkali metal, ammonium, alkyl ammonium, or alkanol ammonium and Rz being hydrogen, alkyl, phenyl, phenyl alkyl, alkoxy alkyl, alkoxy phenyl or alkoxy phenyl alkyl are useful as complexing agents and/or detergency builders. The ester and acid forms of these compounds are useful as intermediates for their preparation.
Inventors
- 👤 Kent P. Lannert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:15
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/26; C07D307/30; C07D307/32; C07D307/33; C07C; C07C51/00; C07C51/09
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
82 words
A compound represented by the formula wherein M is selected from the group consisting of alkali metal, ammonium, alkyl ammonium containing 1 to 4 carbon atoms and alkanol ammonium containing 1 to 4 carbon atoms; A is selected from the group consisting of hydrogen, methyl, ethyl, --CH 2 OH and RxOH; and Rx is ##EQU54## Rz being selected from the group consisting of hydrogen, alkyl, alkoxy alkyl, and --COOM, the total number of carbon atoms in Rx being from 2 to 22.
Claim 2
Dependent Claim
82 words
A compound represented by the formula wherein M is selected from the group consisting of alkali metal, ammonium, alkyl ammonium containing 1 to 4 carbon atoms and alkanol ammonium containing 1 to 4 carbon atoms; A is selected from the group consisting of hydrogen, methyl, ethyl, --CH 2 OH and RxOH; and Rx is ##EQU54## Rz being selected from the group consisting of hydrogen, alkyl, alkoxy alkyl, and --COOM, the total number of carbon atoms in Rx being from 2 to 22.
Claim 3
Dependent Claim
12 words
A compound according to claim 1 wherein all Rz substituents are hydrogen.
Claim 4
Dependent Claim
15 words
A compound according to claim 2 wherein --A is --CH 3 and M is sodium.
References Cited (Backward Citations)
US3293176A
Cited
DE2248708A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-21 | 1980-09-20 | 1981-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-21 | 1984-09-20 | 1985-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-21 | 1988-09-20 | 1989-03-22 | $7700.00 | Window Closed / Lapsed |