Process for preparing aromatic polyesters

Details Process for preparing aromatic polyesters Process for preparing aromatic polyesters

C - Chemistry, Metallurgy

08

G

402/189, 402/202

C08G 63/18 (2006.01) C08G 63/195 (2006.01) C08G 63/199 (2006.01) C08G 63/64 (2006.01) C08G 63/66 (2006.01) C08G 63/672 (2006.01) C08G 63/688 (2006.01) C08G 63/80 (2006.01)

Patent

CA 1045288

ABSTRACT OF THE DISCLOSURE In a process of preparing aromatic polyesters, useful as engineering plastics, from (A) aromatic dicarboxylic acids and (B) diphenols by the solid phase polymerization method, the speed of the solid phase polymerization reaction can be enhanced to a marked degree by copolymerizing (C) an aliphatic dihydroxy compound, and in this case the amounts in which the components (B) and (C) are used, based on (A), being 70 - 105 mol % of (B) and 1 - 50 mol % of (C), with the total amount of (B) and (C) corresponding to 100 - 130 mol % of (A).

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