Maleimide copolymer and resin composition

By adding a maleimide-based copolymer of a specific composition to the thermoplastic resin, the problem of wire drawing during hot plate welding is solved, and the effect of suppressing wire drawing, improving appearance and imparting heat resistance is achieved.

CN115605520BActive Publication Date: 2025-05-02DENKA CO LTD
View PDF 5 Cites 0 Cited by

Patent Information

Application Number
CN202180035361.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Priority Date
2020-08-31
Filing Date
2021-06-08
Publication Date
2025-05-02
Estimated Expiration
2041-06-08

AI Technical Summary

Technical Problem

During the welding process of hot plates, the resin surface is prone to wire drawing when it is pulled away from the hot plate, resulting in poor appearance and reduced workability.

Method used

By adding a maleimide-based copolymer of a specific composition to the thermoplastic resin, the increase in yellowness is suppressed and heat resistance is imparted, while the wire drawing phenomenon during welding of the hot plate is suppressed.

Benefits of technology

The wire drawing phenomenon during hot plate welding is effectively suppressed, the appearance and workability of the finished product are improved, and the resin composition is given good heat resistance.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure BDA0003941909420000061
    Figure BDA0003941909420000061
  • Figure BDA0003941909420000301
    Figure BDA0003941909420000301
  • Figure BDA0003941909420000331
    Figure BDA0003941909420000331
Patent Text Reader

Abstract

The present invention relates to a maleimide copolymer, which has 40 to 65% by mass of an aromatic vinyl monomer unit and 35 to 60% by mass of a maleimide monomer unit, wherein the residual amount of the aromatic vinyl monomer is 200 to 2000 ppm by mass, and the residual amount of the maleimide monomer is 30 to 400 ppm by mass.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Resin composition for fusing heat plate

    JP1997012902A

  • Maleimide copolymer, its production and thermoplastic resin composition containing the copolymer

    JP1994093044A

  • Preparation of maleimide-based copolymer

    JP1999158215A

  • Thermoplastic resin composition for lamp housing

    JP2004182835A

  • Method for producing thermoplastic resin composition

    JP2009191096A