Polymer mixture for producing films

Abstract

In order to produce a polymer mixture essentially consisting of starch and a polyolefin up to 70 wt. % of thermoplastically processable starch is mixed with 10 to 40 wt. % polyolefin and 10 to 35 wt. % ethylene/acrylate/maleic anhydride terpolymer. During this mixing process an esterification reaction takes place between the maleic anhydride groups in the terpolymer with free hydroxyl groups in the starch according to the general reaction process (I).

Dependencies are inferred from the claim text.