Patent ID: 6120892
Filing Date: 2000-09-19
Classification: C03C,C04B,C09D,Y10T

Abstract:
A hard surface of rigid construction or building material which has been treated by a method for imparting water, oil or stain repellency, said method comprising application without heating to the surface of an effective amount of a composition consisting of monomers copolymerized in the following percentages by weight:(a) from about 40% to about 90% of at least one monomer of formula I:R.sub.f --Q--A--C(O)--C(R).dbd.CH.sub.2 IwhereinR.sub.f is a straight or branched-chain perfluoroalkyl group of 2 to about 20 carbon atoms,R is H or CH.sub.3,A is O, S, or NR.sub.1 wherein R.sub.1 is H or a C.sub.1 -C.sub.4 alkyl, and Q is alkylene of 1 to about 15 carbon atoms, hydroxyalkylene of 3 to about 15 carbon atoms, --(C.sub.n H.sub.2n)(OC.sub.q H.sub.2q).sub.m --, --SO.sub.2 NR.sub.1 (C.sub.n H.sub.2n)-- or --CONR.sub.1 (C.sub.n H.sub.2n)-- wherein R.sub.1 is H or C.sub.1 -C.sub.4 alkyl, n is 1 to about 15, q is 2 to about 4, and m is 1 to about 15;(b) from about 2% to about 50% of a monomer of formula IIA or IIB or a mixture thereof:(CH.sub.2 .dbd.C(R)COZ(CH.sub.2).sub.r.sup.+ NR.sub.2 R.sub.3 R.sub.4)X.sup.- IIAandCH.sub.2 --C(R)COZ(CH.sub.2).sub.r NR.sub.2 R.sub.3 (O) IIBwhereinR is H or CH.sub.3,R.sub.2 and R.sub.3 are each independently C.sub.1 -C.sub.4 alkyl, hydroxyethyl, or benzyl or R.sub.2 and R.sub.3 together with the nitrogen atom form a morpholine, pyrrolidine, or piperidine ring,R.sub.4 is H or C.sub.1 -C.sub.4 alkyl or R.sub.2, R.sub.3, and R.sub.4 together with the nitrogen form a piperidine ring,Z is --O-- or --NR.sub.4 --r is 2 to 4, andX.sup.- is an anion,provided that the nitrogen is from about 40% to 100% salinized, quaternized, or present as amine oxide.