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US 4,071,499 AGranted
High temperature polyester resins from 4,4'-bis(p-hydroxyphenoxy)diphenyl ether and terephthalic acid
AssigneeCelanese Corporation
InventorsRobert W. Stackman, Anthony B. Conciatori
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Abstract
This invention provides high temperature performance polyester resins which contain polyphenyl ether blocks as recurring structural units. The polyester resins are melt stable at temperatures up to about 400.degree. C.
Claims6
A polyester resin composition which consists essentially of the recurring structural unit:
- ##STR4##
Dependencies are inferred from the claim text.