Patent ID: 6143858
Filing Date: 2000-11-07
Classification: C08G

Abstract:
A polyestercarbonate comprisinga) carbonate structural units corresponding to structure I: ##STR18## where R.sub.1 is independently selected from the group consisting of halogen, hydrogen, monovalent hydrocarbon, monovalent hydrocarbonoxy radicals,R.sub.2 is independently selected from the group consisting of halogen, hydrogen, monovalent hydrocarbon, and monovalent hydrocarbonoxy radicals;W is selected from the group consisting of divalent hydrocarbon radicals,--S--, --S--S--, --O--, ##STR19## each n is independently selected from integers having a value of from 0 to 4 inclusive; andb is zero or one;the polyestercarbonate further comprisingb) residues of a branched dicarboxylic acid of structure V or its derivatives, the branched dicarboxylic acid having two carboxylic acid groups and a side aliphatic chain ##STR20## where the dicarboxylic acid has from about 10 to about 40 carbon atoms;c is an integer from 0 to about 36;d is an integer from 0 to about 36; ande is an integer from 0 to about 36where the sum of c, d, and e is at least 6.