Patent ID: 7470741
Filing Date: 2008-12-30
Classification: C03C,C08F,C08K,C09D,D06M

Abstract:
1. Fluorochemical composition comprising between about 0.05 and 50 percent by weight of the condensation product of (a), (b), (c), and (d) wherein: (a) one or more fluorochemical oligomers derivable from a free radical polymerization of one or more monovalent fluorinated monomers and optionally one or more non-fluorinated monomers in the presence of a chain transfer agent, said fluorochemical oligomer being free of acid groups and comprising one or more groups of the formula: wherein M 1 is Si, R represents a non-hydrolysable group, Y represents a hydrolysable group, q is 0, 1 or 2, p is 4 and p−q−1 is at least 1; and (b) one or more non-fluorinated compounds of the formula wherein R 2 represents a non-hydrolysable group, M 2 is Si, j is 4, i is 0,1 or 2, and Y 7 represents a hydrolysable group and having at least two hydrolysable groups per molecule (a); wherein the weight ratio of said (a) oligomers to said (b) non-fluorinated compounds is from about 2:1 to about 1:100 (c) is crosslinking agent being a compound of an element M (d) is sufficient water to effect hydrolysis of said hydrolysable groups; wherein said condensation product is dispersed or dissolved in (e) organic solvent selected from the group consisting of aliphatic alcohols, ketones, esters, ethers, and mixture thereof.