POLYBUTYLENE TEREPHTALATE RESIN COMPOSITION FOR LASER WHITE MARKING

摘要

PURPOSE: A polybutylene terephthalate resin composition for white marking is provided to secure the excellent whiteness and the clearness when white marking without reducing the mechanical property. CONSTITUTION: A polybutylene terephthalate resin composition for laser white marking contains the following: 100parts of resin composition by weight containing 60~80wt% of polybutylene terephthalate resin and 20~40wt% of glass fiber; 0.5~3parts of black pigment master batch by weight; 0.5~3parts of conductive carbon black master batch by weight; and 0.4~4parts of dispersing agent by weight. The black pigment master batch is produced with carbon black with the average particle diameter or 10~50nm.