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AssigneeTOYOBO MC Corporation
InventorsTakahiro SHIMIZU, Yoshitaka AYUZAWA
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An inorganic material-reinforced thermoplastic polyester resin composition from which a molding with high rigidity and high strength having less appearance defects such as floating of inorganic reinforcing material and less warp deformation and having a uniform textured appearance without irregularities can be obtained comprises specific amounts of a polybutylene terephthalate resin (A), a polyethylene terephthalate resin (B), a copolymerized polybutylene terephthalate resin (C), a copolymerized polyethylene terephthalate resin (D), a polycarbonate-based resin (E), a glass fiber-based reinforcing material (F), and a transesterification inhibitor (G), respectively, wherein glass fiber-based reinforcing material (F) comprises specific amounts of a flat cross-section glass fiber (F1) and a milled short glass fiber (F2), respectively, wherein glass fiber-based reinforcing material (F) in the resin composition has a weight average fiber length Lw of 200 to 700 μm, and wherein the inorganic material-reinforced thermoplastic polyester resin composition has a melt viscosity in a specific range.
An inorganic material-reinforced thermoplastic polyester resin composition, comprising 8 to 20 parts by mass of a polybutylene terephthalate resin (A), 1 to 7 parts by mass of a polyethylene terephthalate resin (B), 1 to 12 parts by mass of a copolymerized polybutylene terephthalate resin (C), 5 to 12 parts by mass of a copolymerized polyethylene terephthalate resin (D), 1 to 6 parts by mass of a polycarbonate-based resin (E), 50 to 70 parts by mass of a glass fiber-based reinforcing material (F), and 0.05 to 2 parts by mass of a transesterification inhibitor (G), relative to 100 parts by mass of a total of components (A), (B), (C), (D), (E) and (F),
Dependencies are inferred from the claim text.