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    POLYESTER-POLYCARBONATE COPOLYMER AND METHOD FOR PRODUCING SAME
    1.
    发明申请
    POLYESTER-POLYCARBONATE COPOLYMER AND METHOD FOR PRODUCING SAME 审中-公开

    公开(公告)号：US20200291162A1

    公开(公告)日：2020-09-17

    申请号：US16071393

    申请日：2017-01-19

    申请人： SAMYANG CORPORATION

    发明人： Kyung Moo SHIN ,  Jin Sik CHOI ,  Young Do KWON

    IPC分类号： C08F293/00

    摘要： The present invention relates to a thermoplastic copolymer resin having excellent heat resistance and transparency and a process for producing the same. More specifically, the present invention relates to a thermoplastic copolymer resin which is obtained by copolymerizing an ester oligomer having a specific structure with a polycarbonate oligomer, exhibits remarkably excellent heat resistance, and has excellent physical property balance such as transparency, impact strength, fluidity, etc.; a method for producing the same; and a molded article comprising the same.

    POLYESTER-POLYCARBONATE COPOLYMER AND METHOD FOR PRODUCING SAME
    2.
    发明申请
    POLYESTER-POLYCARBONATE COPOLYMER AND METHOD FOR PRODUCING SAME 有权

    公开(公告)号：US20230002534A1

    公开(公告)日：2023-01-05

    申请号：US17889729

    申请日：2022-08-17

    申请人： SAMYANG CORPORATION

    发明人： Kyung Moo SHIN ,  Jin Sik CHOI ,  Young Do KWON

    IPC分类号： C08F293/00

    摘要： Polycarbonate block copolymers are provided, which have: (A) a polyester block of chemical formula 1; and (B) a polycarbonate block derived from a dihydric phenol of chemical formula 3 compound and phosgene. The copolymers may be prepared by (1) polymerizing ester oligomers to form a compound of chemical formula 1; and (2) copolymerizing the ester oligomer obtained in (1) with a polycarbonate oligomer prepared from a dihydric phenol compound of chemical formula 3 and phosgene, in the presence of a polymerization catalyst. The block copolymer may have a viscosity average molecular weight (Mv) of 10,000 to 200,000. The thermoplastic copolymer resins have excellent heat resistance, transparency, impact strength, and fluidity, and thus can be usefully applied in various products, including office devices, electric/electronic products, and automotive interior/exterior parts;