Patent ID: 7026379

Claim:
A copolymer resin composition, comprising at least a copolymer obtained through dehydration-polycondensation of: (A) at least one monosaccharide having a hydroxyl group, and a carboxyl group or an ion-exchanged carboxyl group, and optionally at least one polysaccharide having a hydroxyl group and a carboxyl group or an ion-exchanged carboxyl group; and (B) at least one material selected from the group consisting of (b1) hydroxycarboxylic acid, (b2) polyhydroxycarboxylic acid, (b3) a mixture of an aliphatic polyol and an aliphatic polybasic acid, and (b4) an aliphatic polyester obtained by the reaction of an aliphatic polyol with an aliphatic polybasic acid.