Production of polyesters

Details Production of polyesters Production of polyesters

C - Chemistry, Metallurgy

08

G

402/206

C08G 63/18 (2006.01) C08G 63/183 (2006.01)

Patent

CA 1079895

ABSTRACT OF THE DISCLOSURE Poly(alkylene terephthalates) are prepared by an improved process which provides high molecular weight, in a shortened reaction time, without excessive loss of the diol reactant to side reactions. In the process an excess of the diol reactant is heated with a mixture of the corresponding dialkyl terephthalates and from 5 to 95 mole % of terephthalic acid, based on the mixture.

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