US4705889A
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US
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Aminosuccinic acid derivatives and their use as emulsifiers for polymer dispersions
Assignee: Bayer AG
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Filing: 1986-03-07
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Granted: 1987-11-10
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Expires: 2006-03-07
Abstract
Abstract Aminosuccinic acid derivatives corresponding to the following general formula (I): ##STR1## wherein R represents an alkyl or alkenyl group having from 10 to 22 carbon atoms which may be branched and/or interupted by one or more oxygen atoms; n represents the number 2 or 3; and K represents hyrogen or a cation; a process for their preparation and their use.
Inventors
- 👤 Udo W. Hendricks
- 👤 Adolf Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:37
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/22; C08F2/24; C08F2/26; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/175
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
Aminosuccinic acid derivatives corresponding to the following general formula (I): ##STR19## wherein R represents an alkyl or alkenyl group having from 10 to 22 carbon atoms which may be branched and/or interrupted by one or more oxygen atoms; n represents the number 2 or 3; and Me 30 represents hydrogen or a monovalent cation or 2 Me 2+ represents a divalent cation.
Claim 2
Dependent Claim
62 words
Aminosuccinic acid derivatives corresponding to the following general formula (I): ##STR19## wherein R represents an alkyl or alkenyl group having from 10 to 22 carbon atoms which may be branched and/or interrupted by one or more oxygen atoms; n represents the number 2 or 3; and Me 30 represents hydrogen or a monovalent cation or 2 Me 2+ represents a divalent cation.
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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) | 1990-11-09 | 1991-05-11 | 1991-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-09 | 1995-05-11 | 1995-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-09 | 1999-05-11 | 1999-11-10 | $7700.00 | Window Closed / Lapsed |