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

申请人： Kingfa Sci. & Tech. Co., Ltd.

发明人： MO, Wenjie ,  HUANG, Xianbo ,  YE, Nanbiao ,  ZHU, Wen ,  GONG, Dejun ,  FENG, Jian ,  FU, Xuejun

IPC分类号： C08L67/02 ,  C08K3/22 ,  C08K7/14 ,  C08K3/04 ,  C08K5/134 ,  C08K13/04

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.