Method for producing aromatic polyesters

Details Method for producing aromatic polyesters Method for producing aromatic polyesters

C - Chemistry, Metallurgy

08

G

402/186

C08G 63/06 (2006.01) C08G 63/60 (2006.01)

Patent

CA 1208396

ABSTRACT OF THE DISCLOSURE: In a method for producing aromatic polyesters having improved moldability by the polycondensation of A: one or more compounds selected from aromatic hydroxy- carboxylic acids and their functional derivatives, or A with B: one or more compounds selected from aromatic dicarboxylic acids and their functional derivatives and C: one or more compounds selected from aromatic diphenols and their functional derivatives, a method for producing aromatic polyesters which comprises, on said polycondensation, adding D: one or more compounds selected from the group consisting of aromatic trihydroxy compounds, aromatic dihydroxy- monocarboxylic acids, aromatic monohydroxydicarboxylic acids and their functional derivatives, to the reaction system in one portion or gradually, followed by bringing these compounds into reaction.

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