Patent US2962774A successfully refreshed from Google Patents.
Patent US4182900A successfully refreshed from Google Patents.
US4182900A
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Ether dicarboxylates
Assignee: Monsanto Co
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Filing: 1978-09-26
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Granted: 1980-01-08
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Expires: 1998-09-26
Abstract
Abstract Ether carboxylates represented by the formula: ##STR1## wherein R 1 and R 2 are individually selected from the group consisting of alkyl containing up to 20 carbon atoms and M 1 and M 2 are individually selected from the group consisting of alkyl containing up to about 4 carbon atoms, are useful as intermediates to prepare the corresponding acid or alkali metal, ammonium and alkanol amine salts, which are useful as chelants, sequestrants and detergent builders.
Inventors
- 👤 Marvin M. Crutchfield
- 👤 Victor D. Papanu
- 👤 Charles J. Upton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:04
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/20; C11D3/2075; C11D3/2089; C07; C07C; C07C59/00; C07C59/235; C07C59/305
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
65 words
A compound represented by the formula: ##STR6## where R 1 and R 2 are individually selected from the group consisting of alkyl containing up to about 20 carbon atoms, and M 1 and M 2 are individually selected from the group consisting of hydrogen, alkali metal, ammonium, alkanol amine containing up to about 4 carbon atoms, and alkyl containing up to about 4 carbon atoms.
Claim 2
Dependent Claim
65 words
A compound represented by the formula: ##STR6## where R 1 and R 2 are individually selected from the group consisting of alkyl containing up to about 20 carbon atoms, and M 1 and M 2 are individually selected from the group consisting of hydrogen, alkali metal, ammonium, alkanol amine containing up to about 4 carbon atoms, and alkyl containing up to about 4 carbon atoms.
Claim 3
Dependent Claim
19 words
A compound of claim 1 wherein R 1 and R 2 individually contain 1 to about 4 carbon atoms.
Claim 4
Dependent Claim
16 words
A compound of claim 1 wherein R 1 contains about 10 to about 20 carbon atoms.
Claim 5
Dependent Claim
16 words
A compound of claim 1 wherein R 1 contains about 12 to about 16 carbon atoms.
Claim 6
Dependent Claim
15 words
A compound of claim 4 wherein R 2 contains 1 to about 4 carbon atoms.
Claim 7
Dependent Claim
14 words
A compound of claim 1 wherein R 1 and R 2 are each methyl.
Claim 8
Dependent Claim
14 words
A compound of claim 1 wherein M 1 and M 2 are alkali metal.
Claim 9
Dependent Claim
20 words
A compound of claim 1 wherein M 1 and M 2 are alkyl containing up to about 4 carbon atoms.
Claim 10
Dependent Claim
14 words
A compound of claim 2 wherein M 1 and M 2 are alkali metal.
Claim 11
Dependent Claim
13 words
A compound of claim 5 wherein M 1 and M 2 are sodium.
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 |