Process

Details Process Process

C - Chemistry, Metallurgy

08

G

402/176

C08G 64/06 (2006.01)

Patent

CA 2025300

08CL06848 ABSTRACT OF THE DISCLOSURE PROCESS A process for preparing a copolyestercarbonate which comprises reacting interfacially a dihydric phenol, a carbonate precursor, and a saturated aliphatic alpha omega dicarboxylic acid having from 9 to about 40 carbon atoms wherein the said diacid is from about 2 to about 20 mole percent based on the dihydric phenol reactant content and wherein the pH is from about 8 to about 9 for about 70 to about 95% of the carbonate incorporation time period and is then raised to a pH of from about 10 to 12 for the remainder of the carbonate incorporation.

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