Patent ID: 8163459
Filing Date: 2012-04-24
Classification: C08G,G03G

Abstract:
1. A method of making an amorphous polyester resin, the method comprising: synthesizing isosorbide from D-glucose; obtaining a mixture comprising a succinic acid obtained by a submerged culture anaerobic fermentation process, and an azelaic acid produced by oxidative cleavage of oleic acid with chromic acid or by ozonolysis; and polycondensing the isosorbide synthesized from D-glucose with the mixture of succinic acid and azelaic acid in the presence of a catalyst to obtain the amorphous polyester resin; wherein: the ratio of isosorbide to the mixture of succinic acid and azelaic acid in the polyester resin is from about 40:60 to about 60:40 mol % of the polyester resin; the succinic acid is present in an amount of from about 30 to about 60 mol % of the polyester resin; the azelaic acid is present in an amount of from about 5 to about 20 mol % of the polyester resin; and a total amount of succinic acid and azelaic acid present in the polyester resin is from about 40 to 60 mol %.