Patent ID: 6093789
Filing Date: 2000-07-25
Classification: C08G,C11D

Abstract:
A process for preparing a polymer having repeating succinyl units comprising:(a) forming a mixture from (i) a derivative of an optionally substituted dicarboxylic acid component comprising a dicarboxylic acid compound selected from the group consisting of 1,4-butanedicarboxylic acid and butenedicarboxylic acid, (ii) a carbonate component comprising a carbonate selected from the group consisting of ammonium carbonate and ammonium hydrogen carbonate, and (iii) a catalyst component, wherein the mixture is placed at a temperature ranging from 60 to 100.degree. C. to form a melt; and(b) raising the temperature of the melt to a temperature ranging from 120 to 145.degree. C., wherein an initial reaction occurs,(c) subjecting the melt to polymerization, wherein the temperature is raised to up to 300.degree. C. and removing water from the melt.