Method for preparing block polyphenylene ether-polycarbonates

Details Method for preparing block polyphenylene ether-polycarbonates Method for preparing block polyphenylene ether-polycarbonates

C - Chemistry, Metallurgy

08

G

400/2013

C08G 64/18 (2006.01) C08G 81/00 (2006.01)

Patent

CA 2021107

RD-18050 METHOD FOR PREPARING BLOCK POLYPHENYLENE ETHER-POLYCARBONATES Abstract 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°C. The preferred catalysts are tetraarylborates, especially tetraalkylammonium tetraarylborates.

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