High strength copolyester

Details High strength copolyester High strength copolyester

C - Chemistry, Metallurgy

08

G

402/184

C08G 73/16 (2006.01)

Patent

CA 1248683

Abstract of the Disclosure HIGH STRENGTH COPOLYESTER It has been determined that the mechanical and thermal properties of polyesters can be improved by incorporating bis-hydroxyalkyl pyromellitic diimides therein. Such polyesters are comprised of repeat units which are derived from (a) at least one diacid component and (b) a diol component which is comprised of (1) from 2 to 90 mole percent of at least one bis-hydroxyalkyl pyromellitic diimide and (2) from 10 to 98 mole percent of one or more members selected from the group consisting of glycols containing from 2 to 12 carbon atoms and glycol ethers containing from 4 to 12 carbon atoms.

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