Polycarbonate resin composition and molded article

The polycarbonate resin composition, featuring a graft copolymer with an ethylene-glycidyl methacrylate copolymer main chain, addresses the issues of rattling noise and self-tapping properties in automotive interior parts, achieving reduced noise and enhanced performance.

JP7689912B2Active Publication Date: 2025-06-09MITSUBISHI ENG PLASTICS CORP
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Patent Information

Application Number
JP2021198707
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2021-12-07
Publication Date
2025-06-09
Estimated Expiration
2041-12-07

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Abstract

To provide a polycarbonate resin composition and a molded article which generate less squeak noise (abnormal sound), and are also excellent in self-tapping properties.SOLUTION: A polycarbonate resin composition contains 55-85 pts.mass of a polycarbonate resin (A), 15-45 pts.mass of a graft copolymer (B) containing an aromatic vinyl monomer component (b1), a vinyl cyanide monomer component (b2) and a diene-based rubbery polymer component (b3), and 1.5-10 pts.mass of a graft copolymer (C) having a main chain of an ethylene-(meth) glycidyl acrylate copolymer with respect to 100 pts.mass of the total of (A) and (B), wherein a content of the diene-based rubbery polymer component (b3) is 10-30 pts.mass with respect to 100 pts.mass of the graft copolymer (B).SELECTED DRAWING: None
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Citation Information

Patent Citations

  • Thermoplastic resin composition and molded article thereof

    JP2016204591A

  • Thermoplastic resin composition and molded article thereof

    JP2018138680A

  • Thermoplastic resin composition and molded product thereof

    WO2015098832A1