Copolyesters and polymerization of macrocyclic oligoesters

Details Copolyesters and polymerization of macrocyclic oligoesters Copolyesters and polymerization of macrocyclic oligoesters

C - Chemistry, Metallurgy

08

G

C08G 63/08 (2006.01) C08G 63/40 (2006.01) C08G 63/60 (2006.01)

Patent

CA 2449034

Copolyesters have been prepared from macrocyclic oligoesters and cyclic esters in the presence of a transesterification catalyst and from oligoesters and organotin compounds with or without the presence of a transesterification catalyst. The invention generally features a method of making a copolyester, a method of making a block copolymer of polyester, and a copolyester.

L'invention concerne des copolyesters préparés à partir d'oligoesters macrocycliques et d'esters cycliques en présence d'un catalyseur d'interestérification et à partir d'oligoesters et de composés d'organo-étain avec ou sans catalyseur d'interestérification. L'invention concerne de manière générale un procédé de préparation d'un copolyester, un procédé de préparation d'un copolymère séquencé de copolyester, et un copolyester.

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