Biodegradable polymeric composition

Details Biodegradable polymeric composition Biodegradable polymeric composition

1991-10-17

1993-03-02

Kight, III, John

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 64, 528353, 528361, C08L 6704, C08G 6306

Patent

active

051910373

ABSTRACT:
A biodegradable polymeric composition comprising 100 parts by weight of a first polymer which is comprised predominantly of R(-)-3-hydroxybutyric acid and from 3 to 4,000 parts by weight of second polymer which is a random copolymer of R(--)-3-hydroxybutyric acid and S(+)-3-hydroxybutyric acid. The composition provides a flexible article having improved mechanical properties while maintaining biodegradability to a degree at least comparable to that of the first polymer.

REFERENCES:
patent: 4393167 (1983-07-01), Holmes et al.
patent: 4427614 (1984-01-01), Barham et al.
patent: 4477655 (1984-10-01), Holmes

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