| abstract |
The present invention provides a biodegradable polycarbonate having both heat resistance and flexibility, and a method for producing a polycarbonate having a high alternating copolymerization ratio. SOLUTION: In the presence of a metal complex coordinated with a porphyrin-based compound, carbon dioxide, an alkylene oxide represented by the following general formula (1), and an alkylene oxide represented by the following general formula (2): A method for producing a random polycarbonate to be copolymerized. Further, the polycarbonate is a random polycarbonate having an alternating copolymerization ratio of 95% or more using carbon dioxide, an alkylene oxide represented by the following general formula (1), and an alkylene oxide represented by the following general formula (2) as raw materials. . In general formula (1), R 1 represents a hydrogen atom or a methyl group. In General Formula (2), R 2 represents an alkyl group, an alkoxy group, an alkoxycarbonyl group, or an alkylsilyl group, Ar represents a benzene ring, a naphthalene ring, or an anthracene ring, and n represents an integer of 0 to 9. To express. [Selection figure] None |