Segmented thermoplastic copolyesters endowed with elastomeric pr

Details Segmented thermoplastic copolyesters endowed with elastomeric pr Segmented thermoplastic copolyesters endowed with elastomeric pr

1989-06-30

1991-02-19

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528285, 528286, 528287, 528289, 528299, 528300, 528304, 5283086, C08G 6302

Patent

active

049945491

ABSTRACT:
Segmented thermoplastic copolyesters having elastomeric properties, containing from 25% to 80% by weight of short-chain polyester units derived from dicarboxylic acids and a diol, and from 20 to 70% by weight of long-chain polyester units derived from dicarboxylic acids and poly(alkylene oxide)-glycols in which at least 10% by weight of the poly-(alkylene oxide)-glycols has a molecular weight lower than 300, and a C/O ratio within the range of from 1.8 to 4.3.

REFERENCES:
patent: 3023192 (1962-02-01), Shivers, Jr.
patent: 3651015 (1969-04-01), Ishida et al.
patent: 3891604 (1975-06-01), Wolfe, Jr.
patent: 3959062 (1976-05-01), Hoh et al.
patent: 4464456 (1984-08-01), Fujikawa et al.

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