Polyester process and product thereof

Details Polyester process and product thereof Polyester process and product thereof

C - Chemistry, Metallurgy

08

G

C08G 63/16 (2006.01) C08G 63/85 (2006.01)

Patent

CA 2049421

In a process for preparing polyesters by mixing at least one non-vicinal aliphatic diol, e.g., 1,4-butanediol or its ester-forming equivalents with at least one dicarboxylic acid, e.g., terephthalic acid or its ester-forming equivalents in the presence of a tetraalkyl titanate catalyst, and adding to the mixture a tetraalkyl zirconate catalyst in amounts such that the ratio of titanium atoms to zirconium atoms is 1.3:1 to 9:1, preferably 1.9:1 to 4.6:1.

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