| abstract |
(57) [Summary] [Purpose] A polybutylene terephthalate (PBT) -based resin composition having excellent release properties, appearance (gloss), and high mechanical strength, despite the large amount of inorganic filler compounded. To provide. [Structure] PBT 95 to 50 wt% and copolymerization PBT 5 to 50 wt% with a melting point of 215 ° C. or less, at least one kind of filler consisting of fiber reinforced filler, flat reinforced filler, and spherical reinforced filler having an average particle size of 10 μm or more. A polyester resin composition containing 20 to 150 parts by weight of the material per 100 parts by weight of the polymer. |