Patent ID: 6906147
Filing Date: 2005-06-14
Classification: B01J,C07F,C08G,Y10T

Abstract:
1. A method for polymerizing a macrocyclic oligoester comprising a structural repeat unit of the formula where A is an alkylene, a cycloalkylene, or a mono- or polyoxyalkylene group; and B is a divalent aromatic or alicyclic group, the method comprising the steps of: (a) providing a first compound, wherein the first compound is a first component of a multi-component catalytic system; (b) providing a second compound that is an alcohol or an epoxide, and that is a second component of the multi-component catalytic system, wherein the multi-component catalytic system demonstrates increased catalytic activity upon contact of the first compound and the second compound compared to the first compound and the second compound individually; and (c) contacting the first compound, the second compound, and a macrocyclic oligoester to polymerize the macrocyclic oligoester.