Patent ID: 6143801
Filing Date: 2000-11-07
Classification: C08G

Abstract:
A method of forming an esterification product, said method comprising:providing (1) at least one component selected from the group consisting of ester monomers, ester oligomers, ester polymers, and mixtures thereof, and (2) a catalyst selected from the group consisting of: ##STR11## and mixtures thereof; wherein D is selected from the group consisting of carbon and silicon; Q is selected from the group consisting of O, S, and NR; M is selected from the group consisting of sodium, lithium, potassium, rubidium, and cesium; R, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R', R"", and R'"" are independently selected from the group consisting of H, O, halogen, Si, N, S, P, C.sub.1 to C.sub.20 linear or branched alkyl, C.sub.3 to C.sub.10 cycloalkyl, and aromatic; andreacting said material in the presence of said catalyst to form an esterification product which is a polymer, wherein said esterification product is formed from at least one component selected from the group consisting of ester monomers, ester oligomers, ester polymers, and mixtures thereof;and wherein said reacting step is a transesterification metathesis reaction.