INORGANIC MATERIAL-REINFORCED THERMOPLASTIC POLYESTER RESIN COMPOSITION AND METHOD FOR PRODUCING SAME

    公开(公告)号:US20230303827A1

    公开(公告)日:2023-09-28

    申请号:US18020316

    申请日:2021-08-04

    CPC classification number: C08L67/03 C08K7/14 C08K2201/004 C08L2205/025

    Abstract: The present invention is an inorganic material-reinforced thermoplastic polyester resin composition which enables to provide a long and thin molding excellent in appearance while maintaining proper mechanical properties such as rigidity and impact resistance, which contains 20 to 55 parts by mass of a polybutylene terephthalate resin (A), 1 to 30 parts by mass of a polyethylene terephthalate resin (B), 3 to 30 parts by mass of a semicrystalline resin and/or amorphous resin (C), and 25 to 65 parts by mass of an inorganic reinforcing material (D). The inorganic reinforcing material (D) in the resin composition has a number average fiber length Ln of 100 to 500 μm. The inorganic material-reinforced thermoplastic polyester resin composition is excellent in fluidity, and has a crystallization temperature during cooling within a specified range.

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