4-valerolactone copolymers

Details 4-valerolactone copolymers 4-valerolactone copolymers

1991-04-02

1992-07-21

Kight, III, John

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

Synthetic resins

From carboxylic acid or derivative thereof

528357, 525415, C08G 6308

Patent

active

051323974

ABSTRACT:
Copolymers of lactic acid, from 0.5 to 20 weight % of 4-valerolactone and from 0 to 20 weight % of a C.sub.6-8 lactone form polymers having a higher intrinsic viscosity than homopolymers of lactic acid per se. The polymers also have an increased heat stability over the homopolymer of lactic acid.

REFERENCES:
patent: 4045418 (1977-08-01), Sinclair
patent: 4643734 (1987-02-01), Lin

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