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...

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Bibliographic Details
Main Authors RUKA PIETORO FUONTANA, POORU UIRIAMU BATSUKUREI
Format Patent
LanguageEnglish
Published 18.09.1991
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary: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.
Bibliography:Application Number: JP19900330943