PREPARATION METHOD OF FLUORINE-CONTAINING BLOCK COPOLYMER AND FLUORINE-CONTAINING BLOCK POLYMER

摘要

PROBLEM TO BE SOLVED: To obtain a fluorine-containing block copolymer having excellent solvent resistance and cold resistance.;SOLUTION: A preparation method of the fluorine-containing block copolymer comprises copolymerizing (a) vinylidene fluoride, (b) another monomer copolymerizable with the vinylidene fluoride and (c) a perfluoropolyether having allyl groups at both ends, represented by formula [1]: CH2=CHCH2NHCOCF (CF3)O[CF2CF(CF3O]mRf[OCF(CF3)CF2]nOCF(CF3)CONHCH2CH=CH2, [wherein Rf is a 2-6C perfluoroalkylene group; (m) and (n) are each a positive integer and the sum of (m) and (n) is ≥20], and the fluorine-containing block copolymer obtained by this method.;COPYRIGHT: (C)2001,JPO