PROCESS FOR MAKING STARCH RESIN COPOLYMER

摘要

A process for making a starch-resin copolymer is described, the process comprising: mixing at least one of a dicarboxylic acid and a dicarboxylic acid anhydride with a starch to yield a starch mixture; adding a liquid mixture including water and a polyol to the starch mixture to produce a functionalized starch; and mixing the functionalized starch with a resin to produce the starch-resin copolymer, wherein the starch used in the process has a low moisture content in comparison with the moisture content of starch used in current processes. Starch-resin copolymers produced by the present process can be biodegradable and compostable.

主权项

1. A process for making a starch-resin copolymer, the process comprising:
a) mixing at least one of a dicarboxylic acid and a dicarboxylic acid anhydride with a starch or modified starch to yield a starch mixture; b) adding a liquid mixture comprising water and a polyol to the starch mixture to produce a functionalized starch; and c) mixing the functionalized starch with a resin to produce the starch-resin copolymer.wherein prior to mixing the one of the dicarboxylic acid and the dicarboxylic acid anhydride with the starch, the starch has a moisture content of not greater than about 8% wt.