Patent ID: 6245116
Filing Date: 2001-06-12
Classification: C08F,D06M,Y10T

Abstract:
A method of providing soil resistance and resistance to staining by acid dyes to a fiber substrate comprising application in a single step of an effective amount of a composition of a terpolymer having units of Formula I ##STR4##whereinX is a C.sub.2-10 alkyl, C.sub.6-12 aryl, or C.sub.4-12 alkoxy radical,d is from about 3 to about 50,R is a fluoroalkyl radical R.sub.f --(A)v--(B)w--,R.sub.f is a fully fluorinated straight or branched aliphatic radical optionally interrupted by at least one oxygen atom,A is a divalent radical selected from --SO.sub.2 N(R"")--, --CON(R"")--, --S--, or --SO.sub.2 --, where R"" is H, or a C.sub.1 -6 alkyl radical,B is a divalent linear hydrocarbon radical --C.sub.t H.sub.2t --, where t is 1 to 12,Y is a divalent radical --CH.sub.2 --O--,u, v, and w are each independently zero or 1,R' is hydrogen or methyl,e is from about 0.05 to about 10,M is hydrogen, alkali metal, or ammonium, andf is from about 5 to about 40,said terpolymer being formed by polymerization of an aliphatic or aromatic alpha olefin or an alkyl vinyl ether, a non-hydrolyzable perfluoroalkyl substituted monomer and maleic anhydride,wherein the molar ratio of non-hydrolyzable perfluoroalkyl substituted monomer to maleic anhydride is from 0.01:1 to 0.25:1.