COMPOSITION
    3.
    发明公开
    COMPOSITION 审中-公开

    公开(公告)号:EP4249551A3

    公开(公告)日:2023-12-27

    申请号:EP23192099.2

    申请日:2016-09-01

    IPC分类号: C08L75/04 C08K5/134 C08K5/13

    摘要: The present invention provides a stabilising composition, comprising:
    a. a first phenolic antioxidant comprising one or more phenolic compounds having the structure of formula (I):

    wherein R 1 is a linear or branched alkyl group having from 12 to 20 carbon atoms; and
    b. one or more second phenolic antioxidants selected from a di-hydroxybenzene.

    LASER MARKING SHADING ENHANCED PBT COMPOSITION, PREPARATION METHOD THEREFOR AND USE THEREOF

    公开(公告)号:EP4230696A1

    公开(公告)日:2023-08-23

    申请号:EP21884342.3

    申请日:2021-03-24

    摘要: The present invention provides a laser marking and shading enhanced PBT composition, including the following components in parts by weight: 50 to 80 parts of a PBT resin; 6 to 20 parts of a shading agent; 15 to 30 parts of a glass fiber; 0.1 to 0.5 part of an antioxidant; and a carbon black being 0.0033% to 0.033% of a weight of the shading agent. According to the present invention, in the case where only the combination of the shading agent and traces of the carbon black is adopted without the use of expensive laser marking agents, the composition has the performance of shading with a whiteness value greater than 90 and a thickness less than 3 mm, and a color difference value greater than 15 before and after laser marking. Therefore, the composition can be used in the field of preparing a lamp cup shell, a capacitor, a connector, or a relay product in lighting industry.