Leather with fluorochemical finish
First Claim
1. Compositions useful for imparting oil and water repellency to fibrous substrates when said substrates are contacted with said compositions, said compositions comprising fluorochemical compounds which are normally solid, water insoluble, aliphatic carboxylic acids and salts thereof which are self-dispersible in water, said compounds containing fluoroaliphatic and aliphatic carboxylic radicals, said fluoroaliphatic radicals having at least three fully fluorinated carbon atoms and a terminal perfluoromethyl group, and urylene and/or carbamato radicals, said radicals bonded together by organic linkages free of interfering moieties, said compounds containing at least 20 weight percent fluorine in the form of said fluoroaliphatic radical.
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Accused Products
Abstract
Fluorochemical aliphatic carboxylic acids, and water dispersible salts thereof, having fluoroaliphatic radicals and urylene and/or carbamato radicals, are used to impart oil and water repellency to fibrous substrates such as tanned leather.
42 Citations
10 Claims
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1. Compositions useful for imparting oil and water repellency to fibrous substrates when said substrates are contacted with said compositions, said compositions comprising fluorochemical compounds which are normally solid, water insoluble, aliphatic carboxylic acids and salts thereof which are self-dispersible in water, said compounds containing fluoroaliphatic and aliphatic carboxylic radicals, said fluoroaliphatic radicals having at least three fully fluorinated carbon atoms and a terminal perfluoromethyl group, and urylene and/or carbamato radicals, said radicals bonded together by organic linkages free of interfering moieties, said compounds containing at least 20 weight percent fluorine in the form of said fluoroaliphatic radical.
- View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10)
- 3. The compounds of claim 1 represented by the formula
- space="preserve" listing-type="equation">(R.sub.f --Q--A--Q'"'"').sub.2 QCOOM
where Rf is said fluoroaliphatic radical, each A is independently --NHCONH-- or --OCONH--, and M is a hydrogen atom or an alkali metal, ammonium, or organoammonium ion, Q is said organic linkage, Q'"'"' is Q--A--Q, and said compounds contain at least 20 weight percent fluorine in the form of said fluoroaliphatic radical.
- 4. The compounds of claim 1 represented by the formula
- space="preserve" listing-type="equation">R.sub.f --Q--A--Q'"'"'--COOM
where Rf is said fluoroaliphatic radical, each A is independently --NHCONH--([, --CONH--, --OCO--, ] or --OCONH--, M is a hydrogen atom or an alkali metal, ammonium, or organoammonium ion, Q is said organic linkage, Q'"'"' is Q--A--Q, and said compounds contain at least 20 weight percent fluorine in the form of said fluoroaliphatic radical.
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7. A fluorochemical compound which is normally solid, water insoluble, self-dispersible in water, said compound containing fluoroaliphatic and aliphatic carboxylic radicals and urylene and/or carbamato radicals, said radicals bonded together by organic linkages, and said compound having the formula ##STR31##
Specification