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Patent US5171877A successfully refreshed from Google Patents.
US5171877A
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Urethanes made from aliphatic fluoro alcohols, isocyanates and carboxylic acids, a process for their preparation and their use
Assignee: Hoechst AG
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Filing: 1990-12-26
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Granted: 1992-12-15
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Expires: 2010-12-26
Abstract
Abstract The urethanes described are synthesized from aliphatic fluoro alcohols, triisocyanate and a carboxylic acid. They are prepared by reaction of the aliphatic fluoro alcohol with the triisocyanate to give the fluoro alcohol/triisocyanate adduct and by reaction of this adduct with the carboxylic acid. The new urethanes are preferably used for the finishing of textiles for the purpose of achieving water, oil and soil repellency.
Inventors
- 👤 Wolfgang Knaup
- 👤 Rainer Kupfer
- 👤 Rolf Kleber
- 👤 Lothar Jaeckel
- 👤 Fritz-Joachim Gohlke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:49
CPC Classifications
C; C08; C08G; C08G69/00; C07; C07D; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/30; C07D251/34; C07C; C07C271/00; C07C271/06; C07C271/08; C07C271/10; C07C271/20; C07C275/00; C07C275/46; C07C275/58; C07C275/62; C08G18/00; C08G18/06; C08G18/28; C08G18/2805; C08G18/288; C08G18/2885; C08G18/30; C08G18/34; C08G18/343; C08G18/346; C08G18/348; C08G18/38; C08G18/3819; C08G18/3821; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; D06M15/576
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
68 words
A urethane of the formula ##STR28## wherein R f is a perfluoroalkyl group having 6 to 18 carbon atoms, x is 1 to 4, y is 1 to 7, A is a triisocyanate radical of the formula ##STR29## X is --O-- or --NH--, z is 1 to 10, and M is a member selected from the group consisting of H, alkali metal ions, ammonium ion, and organoammonium ions.
Claim 2
Dependent Claim
68 words
A urethane of the formula ##STR28## wherein R f is a perfluoroalkyl group having 6 to 18 carbon atoms, x is 1 to 4, y is 1 to 7, A is a triisocyanate radical of the formula ##STR29## X is --O-- or --NH--, z is 1 to 10, and M is a member selected from the group consisting of H, alkali metal ions, ammonium ion, and organoammonium ions.
Claim 3
Dependent Claim
58 words
A urethane of the formula ##STR30## wherein R f is a perfluoroalkyl group having 6 to 18 carbon atoms, x is 1 to 4, y is 1 to 7, A is a triisocyanate radical of the following formulae ##STR31## M is a member selected from the group consisting of H, alkali metal ions, ammonium ion, and organoammonium ions.
Claim 4
Dependent Claim
58 words
A urethane of the formula ##STR30## wherein R f is a perfluoroalkyl group having 6 to 18 carbon atoms, x is 1 to 4, y is 1 to 7, A is a triisocyanate radical of the following formulae ##STR31## M is a member selected from the group consisting of H, alkali metal ions, ammonium ion, and organoammonium ions.
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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) | 1995-12-15 | 1996-06-15 | 1996-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-15 | 2000-06-15 | 2000-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-15 | 2004-06-15 | 2004-12-15 | $7700.00 | Window Closed / Lapsed |