US4960543A
Expired / Lapsed
US
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Urethane made from aliphatic fluorinated alcohols, isocyanates and substituted aromatic compounds, a process for their preparation, and their use
Assignee: Hoechst AG
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Filing: 1988-12-27
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Granted: 1990-10-02
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Expires: 2008-12-27
Abstract
Abstract Urethanes made from aliphatic fluorinated alochols, isocyanates and substituted aromatic compounds, a process for their preparation, and their use. The novel urethanes are synthesized from an aliphatic fluorinated alcohol, an isocyanate and a specific substituted phenol or aniline compound. They are prepared by reacting an aliphatic fluorinated alcohol with a di- or triisocyanate to form a fluorinated alcohol/isocyanate adduct and reacting this adduct with a certain substituted phenol or aniline to form the urethanes intended. The novel urethanes are preferably used for oleophobic and hydrophobic finishing of textiles and leather.
Inventors
- 👤 Frank Wehowsky
- 👤 Rolf Kleber
- 👤 Lothar Jaeckel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:58
CPC Classifications
C; C07; C07C; C07C275/00; C07C275/28; C07C275/04; C07C275/06; C07C275/14; C07C271/00; C07C271/06; C07C271/08; C07C271/26; C07C271/28; C07C275/46; C07C275/58; C07C275/62; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/2805; C08G18/288; C08G18/2885; C08G18/30; C08G18/32; C08G18/3203; C08G18/3215; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/564; D06M15/576
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A urethane made from an aliphatic fluorinated alcohol an isocyanate and a substituted aromatic compound of the formula ##STR12##
Claim 2
Dependent Claim
19 words
A urethane made from an aliphatic fluorinated alcohol an isocyanate and a substituted aromatic compound of the formula ##STR12##
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) | 1993-10-01 | 1994-04-02 | 1994-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-01 | 1998-04-02 | 1998-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-01 | 2002-04-02 | 2002-10-02 | $7700.00 | Window Closed / Lapsed |