General Electric Company

Sabic Innovative Plastics IP B.v.

Taeseok Jang

Daniel Joseph Brunelle

Joseph Anthony Suriano

James Edward Pickett

Tiberiu Mircea Siclovan

Gregory Allen O'Neil

Edward Pickett

Tiberiu Mircea Sielovan

Thermally stable polymers comprising resorcinol arylate chain members are prepared using an interfacial method comprising the steps of: (a) combining at least one resorcinol moiety and at least one catalyst in a mixture of water and at least one organic solvent substantially immiscible with water; and (b) adding to the mixture from (a) at least one dicarboxylic acid dichloride while maintaining the pH between 3 and 8.5 through the presence of an acid acceptor, wherein the total molar amount of acid chloride groups is stoichiometrically deficient relative to the total molar amount of phenolic groups.

Thermally stable polymers, method of preparation, and articles made therefrom

Polyesters such as poly(1,4-cyclohexanedimethyl-1,4-cyclohexanedicarboxylate) are prepared by the reaction of at least one relatively non-volatile diol, preferably 1,4-cyclohexanedimethanol, with a 1,4-cyclohexanedicarboxylic acid ester in the presence of a catalyst such as a tetraalkyl titanate. Maximum molecular weight and crystallinity are provided by at least one of two options: conducting the reaction at a series of progressively increasing temperatures below 265.degree. C., with a residence time in the range of 40-120 minutes at temperatures above 250.degree. C.; and conducting an initial stage of the reaction in the presence of at least one C.sub.2-6 aliphatic diol such as ethylene glycol, diethylene glycol or 1,4-butanediol.

Method for preparing poly(1,4-cyclohexanedicarboxylates)

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Troy, NY, United States of America

Taeseok Jang