Cellulose acetate and starch based biodegradable injection molde

Details Cellulose acetate and starch based biodegradable injection molde Cellulose acetate and starch based biodegradable injection molde

1993-07-01

1994-02-22

Group, Karl

Compositions: coating or plastic

Coating or plastic compositions

Carbohydrate or derivative containing

106196, 106210, 106211, 106214, 106203, 106204, 264211, 26421112, 536 69, 536102, C08L 300, C08L 112

Patent

active

052883183

ABSTRACT:
A method and composition are provided for making biodegradable injection ded parts from 30% to 70% cellulose acetate, 10% to 60% unmodified raw (whole) starch and 5% to 35% plasticizer including glycerols and glycerol acetates. Other ingredients that can be used include: starch, flour and paper acetates; gelatin; boric acid; and agricultural fillers. The solid ingredients are combined and fed to an extruder used to make pellets or to feed injection molding equipment. The resulting parts are clear to white or colorful depending upon the added filler materials. The plastics formed are water resistant, high strength and biodegradable.

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