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COORDINATION COMPLEXES CONTAINING TWO COMPONENTS IN A MOLECULE AND PROCESS OF PRODUCING POLYCARBONATE BY COPOLYMERIZATION OF CARBON DIOXIDE AND EPOXIDE USING THE SAME
COORDINATION COMPLEXES CONTAINING TWO COMPONENTS IN A MOLECULE AND PROCESS OF PRODUCING POLYCARBONATE BY COPOLYMERIZATION OF CARBON DIOXIDE AND EPOXIDE USING THE SAME
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机译：分子中包含两种成分的配位化合物和通过二氧化碳和环氧乙烷的共聚合生产聚碳酸酯的方法
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摘要
A method for preparing polycarbonate from carbon dioxide and epoxide by using a complex having two components in one molecule is provided to realize high polymerization activity under a high monomer/catalyst ratio, thereby reducing the amount of catalyst, to provide a high-molecular weight polycarbonate, and to improve the polymerization conversion. A method for preparing polycarbonate comprises a step of copolymerizing carbon oxide and an epoxy compound selected from the group consisting of halogen- or alkoxy-substituted or non-substituted C2-C20 alkylene oxide, halogen- or alkoxy-substituted or non-substituted C4-C20 cycloalkene oxide, and halogen- or alkoxy-substituted or non-substituted C8-C20 styrene oxide, by using a complex containing at least one selected from the functional groups represented by the following formulae 1-3 and a central metal atom having a Lewis acid group. In the formulae, Z is N or P; X is halogen atom, or a C1-C20 carboxy, C1-C20 alkoxy, C1-C20 alkylsulfonato or amido optionally containing at least one of halogen atoms, N, O, Si, S and P; X is capable of being coordinated to a metal center having a Lewis acid group; each of R11, R12, R13, R21, R22, R23, R24, and R25 represents a C1-C20 alkyl, C2-C20 alkenyl, C7-C20 alkylaryl or C7-C20 arylalkyl radical optionally containing at least one of halogen atoms, N, O, Si, S and P, or a hydrocarbyl-substituted Group 14 metalloid radical; two of R11, R12 and R13, or two of R21, R22, R23, R24 and R25 are optionally linked to each other to form a ring; each of R31, R32 and R33 represents H, a C1-C20 alkyl, C2-C20 alkenyl, C7-C20 alkylaryl or C7-C20 arylalkyl radical optionally containing at least one of halogen atoms, N, O, Si, S and P, or a hydrocarbyl-substituted Group 14 metalloid radical; two of R31, R32 and R33 are optionally linked to each other to form a ring; and X' is O, S or N-R(wherein R is H, or a C1-C20 alkyl, C2-C20 alkenyl, C7-C20 alkylaryl or C7-C20 arylalkyl radical optionally containing at least one of halogen atoms, N, O, Si, S and P).
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