Patent ID: 7189789
Filing Date: 2007-03-13
Classification: C08G,C08L

Abstract:
1. A curable fluoropolyether composition comprising (A) a base polymer consisting of a fluoropolyether compound containing alkenyl radicals in a concentration of 3×10 wherein X is independently selected from among —CH 2 —, —CH 2 O— and —Y—NR 1 —CO—, wherein Y is —CH 2 — or a radical of the following structural formula (Z): wherein the bond may be at o, m or p-position and R 1 is hydrogen, methyl, phenyl or allyl, X′ is independently selected from among —CH wherein the bond may be at o, m or p-position and R 2 is hydrogen, methyl. phenyl or allyl, and p is independently equal to 0 or 1, L is an integer of 2 to 6, and m and n each are an integer of 0 to 200, (B) a crosslinking agent or chain extender consisting of an organosilicon compound having the average compositional formula (2): wherein R is an alkyl radical of 1 to 3 carbon atoms, Rf is a partially fluorinated alkyl radical of 3 to 16 carbon atoms or a partially fluorinated, ether bond-containing monovalent saturated radical, and n has an average value of 1.5 to 6.0, and (C) a hydrosilylation catalyst, components (B) and (C) being used in effective amounts for component (A) to cure.