A polymer for imparting repellency and stain resistance to substrates is
disclosed of Formula 1:
(W).sub.a(R.sup.2).sub.b--Si(R.sup.1).sub.2--O--[Si(R.sup.1).sub.2--O].su-
b.n--[Si(W).sub.c(R.sup.1).sub.d(R.sup.2).sub.e--O].sub.m--Si(R.sup.1).sub-
.2--(W).sub.f(R.sup.2).sub.g wherein: a, b, c, d, e, f and g are each
independently 0 or 1, provided that (a+b) is 1, (f+g) is 1, and (c+d+e)
is 2, each R.sup.1 is divalently a C.sub.1 to C.sub.8 alkyl, each
R.sup.2 is independently H or C.sub.1 to C.sub.8 alkyl, optionally
containing oxygen, nitrogen, or sulfur, or a combination thereof, n=0 to
500, m=1 to 100, each W is independently (R.sub.f--X-A-X).sub.p--Y
wherein: R.sub.f is a straight or branched perfluoroalkyl group having
from about 2 to about 20 carbon atoms, or a mixture thereof, which is
optionally interrupted by at least one oxygen atom, each X is
independently an organic divalent linking group having from about 1 to
about 20 carbon atoms, optionally containing oxygen, nitrogen, or sulfur,
or a combination thereof, A is a 1, 2, 3-triazole, p=0 to 2, and Y is O,
OR, N, NR or N(R).sub.2 wherein R is H or C.sub.1 to C.sub.20 alkyl,
optionally containing oxygen, nitrogen, or sulfur, or a combination
thereof.