High strength copolyester

Details High strength copolyester High strength copolyester

1985-09-09

1986-08-12

Phynes, Lucille M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528291, 528300, C08G 6944

Patent

active

046057285

ABSTRACT:
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.

REFERENCES:
patent: 3274159 (1966-09-01), Kluiber
patent: 3461136 (1969-08-01), Pruckmayr et al.
patent: 4245086 (1981-01-01), Uno et al.

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