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    COPOLYMER POLYESTER RESIN AND PREPARATION METHOD THEREFOR
    2.
    发明公开
    COPOLYMER POLYESTER RESIN AND PREPARATION METHOD THEREFOR 审中-公开

    公开(公告)号：EP4455185A1

    公开(公告)日：2024-10-30

    申请号：EP22911916.9

    申请日：2022-12-21

    申请人： SK Chemicals Co., Ltd.

    发明人： OH, Hyun-Woo ,  KANG, Byoung-Gook ,  MOON, Jung-Me ,  SIM, Jinsook ,  LEE, Yoo Jin ,  LEE, Jin-Kyung

    IPC分类号： C08G63/672 ,  C08G63/199 ,  C08G63/183 ,  C08G63/78 ,  C08G63/90

    摘要： The present invention relates to a copolymer polyester resin and a preparation method therefor. In particular, according to an embodiment of the present invention, the copolymer polyester resin comprises a repeating unit derived from a diol component and a repeating unit derived from a component of dicarboxylic acid or a derivative thereof, in which, by adjustment of the amounts of a first diol to a third diol or a fourth diol to a sixth diol, included in the diol component, impact strength and intrinsic viscosity are controlled to be within appropriate ranges without degrading transparency, and thus miscibility is excellent. Therefore, the copolymer polyester resin can exhibit excellent characteristics by being utilized in various fields requiring high impact strength and high heat resistance, such as packaging materials such as food containers, and interior materials for vehicles.

    POLYESTERS AND A PROCESS FOR PREPARING THESE POLYESTERS
    3.
    发明公开
    POLYESTERS AND A PROCESS FOR PREPARING THESE POLYESTERS 审中-公开

    公开(公告)号：EP4455182A1

    公开(公告)日：2024-10-30

    申请号：EP23169389.6

    申请日：2023-04-24

    申请人： Evonik Operations GmbH ,  Technische Universität München

    发明人： ALTENBUCHNER, Peter ,  BRATIC, Brigita ,  RIEGER, Berhard ,  HEUSER, Thomas

    IPC分类号： C08G63/16 ,  C08G63/183 ,  C08G63/199 ,  C09D167/02 ,  C09J167/02 ,  C07C29/14

    摘要： The present invention relates to a polymer comprising units derived from a carboxylic acid comprising at least two carboxylic groups or its anhydride and from an alcohol comprising at least two OH-groups, wherein the alcohol comprising at least two OH-groups is a bi-cyclo-aliphatic diol of formula (IX)

    with R 1 = ethyl, -CHz-CHz-CHzOH, or -CH(-CH 3 )-CH 2 OH, and R 2 = H or -CHzOH, with the proviso that R 2 is not H when R 1 = ethyl,
    to a process for preparing a polymer by reacting at least one carboxylic acid comprising at least two carboxylic groups or its anhydride or ester and at least one alcohol comprising at least two OH-groups, wherein the alcohol comprising at least two OH-groups used is a bi-cyclo-aliphatic diol of formula (IX), and to the use of a polymer according to the invention or obtained by a process according to the invention as or for the production of lacquers, coatings or adhesives, preferably tube or can coatings, metal decorating enamels, heat sealing lacquers, hot laminating adhesives, or primers.