Starch-containing biodegradable plastic and method of producing

Details Starch-containing biodegradable plastic and method of producing Starch-containing biodegradable plastic and method of producing

1992-10-01

1993-10-26

Kight, III, John

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523124, 523125, 525, 525, 525, C08J 126

Patent

active

052567117

ABSTRACT:
A biodegradable plastic composition, which may be in the form of a molded dy, includes gelatinized starch and a biodegradable, aliphatic polyester resin having a melting point of 45.degree.-130 .degree. C. The plastic is produced by kneading a blend containing a starchy substance selected from non-gelatinized, granular starch and gelatinized starch and the aliphatic polyester resin at a temperature higher than the melting point of the aliphatic polyester in the presence of water in an amount of 1-45 % based on the weight of the starchy substance.

REFERENCES:
patent: 3850863 (1974-11-01), Clendinning
patent: 4133784 (1979-01-01), Otey et al.
patent: 4337181 (1982-06-01), Otey et al.
patent: 5108807 (1992-04-01), Tucker

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