BLOCK COPOLYMERS BASED ON POLYPHENYLENE ETHERS AND POLYCONDENSATES, AND PROCESS FOR PRODUCING THEM

摘要

Block copolymers based on polyphenylene ethers and polycondensates obtained by a process that comprises of the following steps: a polyphenylene ether with a functional end group is prepared by oxidative coupling of a mixture of 90.0 to 99.8 mole % of a substituted phenol and 10.0 to 0.2 mole % of a functionalized phenol; a polycondensation of suitable monomers is then carried out in the presence of this functionalized polyphenylene ether, are disclosed.