Patent ID: 7652085
Filing Date: 2010-01-26
Classification: C08J,C08K,C08L

Abstract:
1. A method of producing a biodegradable resin composition, comprising: mixing a biodegradable resin, a plasticizer, and a crystal nucleating agent, which is an aliphatic compound having two or more groups of at least one group selected from the group consisting of an ester group, a hydroxyl group, and an amide group, at the melting point (Tm) of the biodegradable resin or higher, and thermally treating the resulting mixture at a temperature of from the glass transition temperature (Tg) of the biodegradable resin to a temperature lower than Tm of the biodegradable resin, thereby producing the biodegradable resin composition, wherein the plasticizer is at least one plasticizer selected from the group consisting of a glycerin ethylene oxide-added acetate, an ester of succinic acid and triethylene glycol monomethyl ether, an ester of adipic acid and diethylene glycol monomethyl ether, and an ester of 1,3,6-hexatricarboxylic acid and butyl diglycol, and wherein the crystal nucleating agent is at least one agent selected from the group consisting of ethylenebis-12-hydroxystearic acid amide and hexamethylenebis-12-hydroxystearic acid amide.