Patent ID: 6916899
Filing Date: 2005-07-12
Classification: C07C,C08G

Abstract:
1. A process of using of at least one member selected from a first group consisting of compounds conforming to formula (1) wherein R R Z denotes an alkylene having 1 to 30 carbon atoms or a single bond, X denotes a single bond or a divalent radical, Y denotes a member selected from the group consisting of a cycloaliphatic radical, polycyclic aliphatic radical and an aromatic radical, and n is 1, 2, 3 or 4 and m is 0, 1, 2 or 3, with the proviso that the sum of n plus m is 4, comprising adding said phenol as a chain terminator to the reaction that entails at least one diphenol in the preparation of a member selected from a second group consisting polycarbonate, polyester carbonate and polyester.