US4760176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aminocarboxylic acid-terminated polyoxy-alkylenes and process for the preparation thereof
Assignee: GE Chemicals Inc
•
Filing: 1987-08-05
•
Granted: 1988-07-26
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Expires: 2007-08-05
Abstract
Abstract A composition, useful as an extreme pressure additive is provided wherein the composition comprises an aminocarboxylic acid-terminated polyoxyalkylene, wherein the polyoxyalkylene has at least seven oxyalkylene units.
Inventors
- 👤 Yuval Halpern
- 👤 Brian A. Pikelny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:18
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/02; C10M133/04; C10M133/06; C10M133/08; C08; C08G; C08G65/00; C08G65/02; C08G65/32; C08G65/329; C08G65/337; C10M149/00; C10M149/12; C10M173/00; C10M173/02; C10M2201/00; C10M2201/02; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2217/00; C10M2217/04; C10N; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/06; C10N2040/08; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
53 words
An aminocarboxylic acid-terminated polyoxyalkylene having the formula: ##STR3## wherein each a is 1 or 2, b is 1, 2 or 3 for each oxyalkylene unit, n is at least 7, each R is hydrogen, methyl or ethyl, each R' is hydrogen, methyl, ethyl or propyl and each X is hydrogen or a salt.
Claim 2
Dependent Claim
53 words
An aminocarboxylic acid-terminated polyoxyalkylene having the formula: ##STR3## wherein each a is 1 or 2, b is 1, 2 or 3 for each oxyalkylene unit, n is at least 7, each R is hydrogen, methyl or ethyl, each R' is hydrogen, methyl, ethyl or propyl and each X is hydrogen or a salt.
Claim 3
Dependent Claim
21 words
The compound of claim 1 wherein the oxyalkylene units are selected from the group consisting of oxyethylene, oxypropylene and mixtures thereof.
Claim 4
Dependent Claim
15 words
The compound of claim 1 wherein said polyoxyalkylene moiety has at least 15 oxyalkylene units.
Claim 5
Dependent Claim
21 words
The composition of claim 1 wherein said amino carboxylic acid-terminated polyoxyalkylene has two terminal carboxyaliphatic groups for each terminal amino moiety.
Claim 6
Dependent Claim
17 words
The compound of claim 1 wherein said aminocarboxylic acid-terminated polyoxyalkylene has at least 3 terminal carboxyaliphatic groups.
Claim 7
Dependent Claim
17 words
The compound of claim 1 wherein said aminocarboxylic acid-terminated polyoxyalkylene is in the form of a salt.
Claim 8
Dependent Claim
26 words
The compound of claim 1 wherein said aminocarboxylic acid-terminated polyoxyalkylene has at lease one terminal carboxyaliphatic moiety selected from the group consisting of carboxymethylene and carboxyethylene.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-26 | 1992-01-25 | 1992-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-26 | 1996-01-25 | 1996-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-26 | 2000-01-25 | 2000-07-26 | $7700.00 | Window Closed / Lapsed |