Patent ID: 6525170
Filing Date: 2003-02-25
Classification: C08G

Abstract:
A polymerization process for producing highly branched polyesters comprising reacting functional groups A and B of multi-functional branching monomer reactants of the formula Aâ€”Lâ€”Bn, where one of A and B represents an epoxide group, the other of A and B represents an acid chloride group, L represents a linking group between A and B, and n is at least 2; wherein polymerization proceeds by reaction of an epoxide group of a first monomer with an acid chloride group of second monomer to open the epoxide group ring and form a reaction product having an ester linkage between the first and second monomers, and repeating such esterification reaction between additional epoxide groups and acid chloride groups of the multifunctional monomers and reaction products of the multifunctional monomers to form a highly branched polyester.