Patent ID: 8637634
Filing Date: 2014-01-28
Classification: C08G

Abstract:
1. A method for preparing block or graft copolymers of poly(alkylene carbonate) and a polymer compound, comprising: carrying out alternating copolymerization of carbon dioxide and one or more epoxide compounds selected from the group consisting of (C2-C20)alkyleneoxide with or without halogen, (C1-C20)alkyloxy, (C6-C20)aryloxy or (C6-C20)ar(C1-C20)alkyloxy substituent(s); (C4-C20)cycloalkyleneoxide with or without halogen, (C1-C20)alkyloxy, (C6-C20)aryloxy or (C6-C20)ar(C1-C20)alkyloxy substituent(s); and (C8-C20)styreneoxide with or without halogen, (C1-C20)alkyloxy, (C6-C20)aryloxy, (C6-C20)ar(C1-C20)alkyloxy or (C1-C20)alkyl substituent(s), in the presence of the polymer compound containing a hydroxyl or carboxyl acid group at an end thereof or branched chain, selected from the following Chemical Formulas 5 to 7 and 9 to, by using a complex of Chemical Formula 1 as a catalyst: wherein M represents trivalent cobalt or trivalent chromium; A represents an oxygen or sulfur atom; Q represents a diradical for linking two nitrogen atoms; R two of the R at least one of the hydrogen included in the R X Z represents a nitrogen or phosphorus atom; R R X′ represents an oxygen atom, a sulfur atom or N—R wherein R represents (C1-C20)alkyl; n represents an integer of adding 1 to the total number of protonated groups contained in R X the imine nitrogen atom(s) is/are coordinated or de-coordinated with M wherein E represents (C1-C30) hydrocarbyl diradical, and m Es contained in one chain are the same or different from each other wherein m is equal to the number of Es in one chain; F represents (C2-C30)hydrocarbyl diradical with or without an ether, ester, or amino group and m Fs contained in one chain are the same or different from each other wherein m is equal to the number of Fs in one chain; a number average molecular weight (Mn) of the polymer compound of Chemical Formulas 5 to 7 is 500 to 500,000 wherein Q independently represents (C1-C30)hydrocarbyl diradical and m Qs contained in one chain are the same or different from each other wherein m is equal to the number of Qs in one chain; a number average molecular weight (Mn) of the polymer compound of Chemical Formula 9 is 500 to 500,000 wherein R a number average molecular weight (Mn) of the polymer compound of Chemical Formula 10 is 500 to 500,000 wherein T represents —CH