FLUOROPOLYMER, PROCESS FOR PREPARING THE SAME, AND USE THEREOF

摘要

A fluorine-containing polymer, having a number-average molecular weight of 500 to 100,000 and represented by the following general formula Rf-(OC3F6)a- (OC2F4)b-(OCF2)c-X-Y-Z-MPnRm-n or PnRm-nM-Z-Y-X-(OC3F6)a-(OC2F4)b-(OCF2)c- X-Y-Z-MPnRm-n (wherein Rf is a perfluoroalkyl group; a, b and c independently represent 0 or a number equal to or greater than 1, with the proviso that the sum of a, b and c is at least 1; X is a group represented by the formula : -(O)d-(CF2)e-(CH2)f- ; Y is a divalent polar group; Z is a group represented by the formula : -(CH2)g- ; M is a metal atom; R is a hydrocarbon group; P is a hydrolyzable polar group; m is an integer equal to "(valency of M) - 1"; and n is an integer of 1 to m), exhibits excellent stainproof property against oily dirt and can form on a substrate a stainproof layer having an excellent stainproof property against particularly fingerprints.