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METHOD FOR PRODUCING POLYESTER-POLYCARBONATE TYPE THERMOPLASTIC POLYESTER ELASTOMER AND POLYESTER-POLYCARBONATE TYPE THERMOPLASTIC POLYESTER ELASTOMER
METHOD FOR PRODUCING POLYESTER-POLYCARBONATE TYPE THERMOPLASTIC POLYESTER ELASTOMER AND POLYESTER-POLYCARBONATE TYPE THERMOPLASTIC POLYESTER ELASTOMER
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机译:制备聚酯-聚碳酸酯型热塑聚酯弹性体和聚酯-聚碳酸酯型热塑聚酯弹性体的方法
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摘要
The present invention is a process for producing a polyester-polycarbonate type thermoplastic polyester elastomer in which a hard segment consisting of a polyester constructed of aromatic dicarboxylic acid, and an aliphatic or alicyclic diol, and a soft segment consisting mainly of aliphatic polycarbonate are connected, comprising at least a step of increasing the molecular weight of an aliphatic polycarbonate diol by a reaction of an aliphatic polycarbonate diol and a chain extender, and a step of reacting aliphatic polycarbonate and a polyester constructed of aromatic dicarboxylic acid and an aliphatic or alicyclic diol in the molten state.
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