POLYBUTYLENE TEREPHTHALATE RESIN COMPOSITION FOR FUSION BONDING WITH LASER AND MOLDED ARTICLE

摘要

A polybutylene terephthalate (PBT) resin composition for fusion bonding with a laser which comprises a PBT resin (A) and at least one resin (B) selected among a polycarbonate resin (b1), styrene resin (b2), polyethylene terephthalate resin (b3), and acrylic resin (b4). The PBT resin (A) may be a PBT homopolyester or a PBT copolymer modified with up to 30 mol% copolymerizable monomer (e.g., a bisphenol compound, alkylene oxide adduct thereof, or asymmetric aromatic dicarboxylic acid). The proportion of the resin (B) to the PBT resin (A) is about from 0.1/1 to 1.5/1 by weight. The resin composition may contain glass fibers. It has excellent suitability for fusion bonding with a laser and can give a molded article having a heightened fusion-bonding strength.