METHOD FOR PRODUCING POLY(ARYLENE ETHER) BLOCK COPOLYMERS

摘要

The present invention relates to a method for producing poly(arylene ether) block copolymers, comprising, in a first step, the reaction of at least one aromatic dihydroxy compound comprising 4,4'-dihydroxybiphenyl in molar excess and at least one aromatic dihalogen compound to form a poly(biphenyl sulfone) polymer, and in a second step, the reaction of the poly(biphenyl sulfone) polymer with at least one aromatic dihydroxy compound and at least one aromatic dihalogen compound. The invention further relates to the poly(arylene sulfone) block copolymers and the use of the poly(arylene sulfone) block copolymers to produce molded parts, fibers, films, or foams.