Biodegradable starch-based polymer compositions

Details Biodegradable starch-based polymer compositions Biodegradable starch-based polymer compositions

1993-06-25

1995-09-12

Michl, Paul R.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

523126, 523128, 524312, 524381, 524394, 524377, C08L 300, C08L 8900

Patent

active

054497086

ABSTRACT:
A method for continuous preparation of a starch-based biodegradable polymer. A homogeneous mixture of starch, an ethylene acrylic acid co-polymer, and a salt of stearic acid are premixed before addition of an aqueous lubricant material. An increase in temperature gelatinizes the starch and melts the co-polymer. Excess moisture is removed under reduced pressure and a plastic material is extruded.

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