Patent ID: 8013096

Claim:
A perfluoropolyoxyalkylene group-containing polymer represented by the following formula (1), wherein Rf is a group having a perfluoropolyoxyalkylene group; W 1 is a divalent organosiloxane group having at least one group represented by the following formula (2); W 2 is a monovalent group selected from an alkyl group, an alkenyl group, an alkenyloxyalkyl group, an aryl group and an organosiloxane group represented by the following formula (3), and the combinations thereof, the monovalent group having 1 to 300 carbon atoms and being optionally substituted with one or more fluorine atoms and; Q is, independently of each other, a divalent linking group having 2 to 12 carbon atoms, optionally containing one or more oxygen atoms, nitrogen atoms, or fluorine atoms; and p is an integer of from 1 to 20, wherein X is a hydrolysable group; R 1 is an alkyl group having 1 to 4 carbon atoms or a phenyl group; y is an integer of from 1 to 5; and a is 2 or 3, wherein R 2 and R 3 each are, independently of each other, a group selected from an alkyl group having 1 to 200 carbon atoms, an aryl group having 1 to 200 carbon atoms, and an alkyloxyalkyleneoxyalkyl group having 1 to 200 carbon atoms and may optionally be substituted with one or more fluorine atoms; and n is an integer of from 0 to 50.