Method for preparing block polyphenylene ether-polycarbonates.

摘要

Block polyphenylene ether-polycarbonate copolymers are prepared by the reaction of a salicylate-terminated polycarbonate with a polyphenylene ether in the presence of a polycarbonate-forming transesterification catalyst. The reaction may be conducted in solution or in the melt, typically at temperatures in the range of about 100-300 DEG C. The preferred catalysts are tetraarylborates, especially tetraalkylammonium tetraarylborates.