Urethanes made from aliphatic fluoro alcohols, isocyanates and carboxylic acids, a process for their preparation and their use
First Claim
1. A urethane of the formula ##STR28## wherein Rf 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, andM is a member selected from the group consisting of H, alkali metal ions, ammonium ion, and organoammonium ions.
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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.
27 Citations
2 Claims
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1. A urethane of the formula ##STR28## wherein Rf 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.
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2. A urethane of the formula ##STR30## wherein Rf 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.
Specification