C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
400/2013
C08G 81/02 (2006.01) C08G 65/48 (2006.01) C08G 81/00 (2006.01)
Patent
CA 1279419
POLYPHENYLENE ETHER-POLYCARBONATE COPOLYMERS AND METHOD OF PREPARATION Abstract Polyphenylene ether-polycarbonate copolymers are prepared by reacting a polyphenylene ether, preferably one which has been acid-functionalized by reaction with a compound such as maleic anhydride or fumaric acid, with an aromatic polycarbonate at a temperature of at least about 175°C in the presence of a polycarbonate-forming transester- ification catalyst, typically a tetraalkyl titanate or a tetraalkylammonium tetraphenylborate. Under these condi- tions, the polycarbonate chain is cleaved and fragments thereof are chemically bonded to the polyphenylene ether.
558166
Campbell John Robert
Shea Timothy John
Company General Electric
Oldham And Wilson
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