A syndiotactic polystyrene composition, its use and a car connector

By adding polyamide resin and maleic anhydride-grafted polyphenylene ether to the syndiotactic polystyrene composition and controlling the relative viscosity difference, the problem of easy deformation and blistering of automotive connector materials at high temperatures is solved, achieving excellent heat distortion temperature and flame retardant properties, suitable for wire-to-board automotive connectors.

CN122404972APending Publication Date: 2026-07-17SHANGHAI KINGFA SCI & TECH +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI KINGFA SCI & TECH
Filing Date
2026-06-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing automotive connector materials are prone to deformation and blistering at high temperatures, failing to meet the requirements for lead-free soldering and flame retardancy, leading to difficulties in connector design and repair.

Method used

By adding polyamide resin and maleic anhydride-grafted polyphenylene ether to the syndiotactic polystyrene composition, the relative viscosity difference is controlled within -0.2≤ab≤0.2, which promotes dispersion in the crystalline region, improves the heat distortion temperature and anti-foaming properties, and adds a halogen-free flame retardant to meet the flame retardant requirements.

Benefits of technology

It achieves resistance to blistering at high temperatures, possesses excellent heat distortion temperature and flame retardant properties, is suitable for automotive connectors with wire-to-board connections, avoids vibration cracking, and meets the requirements for lead-free soldering.

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Abstract

本发明公开了一种间规聚苯乙烯组合物及其应用和汽车连接器,间规聚苯乙烯组合物包括以下重量份数的各组分:5‑55份聚酰胺树脂,5‑35份间规聚苯乙烯,5‑25份无卤阻燃剂,0.5‑6份马来酸酐接枝聚苯醚,10‑55份填料;所述聚酰胺树脂为半芳香族聚酰胺;所述聚酰胺树脂的相对黏度为a,所述间规聚苯乙烯的相对黏度为b,‑0.20≤a‑b≤0.20。本发明的间规聚苯乙烯组合物在满足阻燃要求的基础上具有高热变形温度和强抗起泡性能。
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Citation Information

Patent Citations

  • Composite catalyst and application thereof

    CN120098166A