Patent ID: 9296680
Filing Date: 2016-03-29
CPC Classification: C07C

Claim Text:
1. A method of making an amorphous resin, comprising the steps of: reacting a tartaric acid with at least one alcohol of the formula R—OH, for a period of time, and at a temperature, in the presence of an optional catalyst, and a solvent in an amount of from 0.65 to less than 1 grams of solvent per gram of an ester of tartaric acid of the formula: wherein the at least one alcohol of the formula R—OH is selected from the group consisting of and mixtures thereof wherein R 1 and R 2 are each independently selected from the definitions for R in ROH; wherein the tartaric acid is selected from the group consisting of L-(+)-tartaric acid, D-(−)-tartaric acid, DL-tartaric acid, mesotartaric acid, and mixtures thereof.