Expanded articles of biodegradable plastics materials and a meth

Details Expanded articles of biodegradable plastics materials and a meth Expanded articles of biodegradable plastics materials and a meth

1992-11-04

1994-02-22

Michl, Paul R.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

524 47, 524 52, 524 53, 106210, 106211, 106212, 106213, 106214, C08J 918, C08L 306

Patent

active

052887650

ABSTRACT:
Expanded articles of biodegradable plastics are produced by the extrusion of a composition including starch, a polymer compatible with starch, in particular, an ethylene-acrylic acid copolymer and/or ethylene-vinyl alcohol copolymer, and an expanding agent. Preferably use is made of sodium bicarbonate as expanding agent in the presence of a polymeric acid.

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Otey, F. H. et al., Ind. Eng. Chem. Res. 26(8):1659-63 (1987), "Starch-Based Blown Films".

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