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    • 10. 发明公开
    • Process for preparing polyphenylene sulfide resins
    • Verfahren zur Herstellung von Polyphenylensulfidharzen。
    • EP0515114A1
    • 1992-11-25
    • EP92304457.2
    • 1992-05-18
    • Tosoh Corporation
    • Tanaka, ShinjiInoue, Hiroshi
    • C08G75/02C08J3/24
    • C08G75/0286
    • Brittleness of polyphenylene sulfide resins is significantly reduced and contrariwise toughness thereof is remarkably enhanced by a two-stage process which comprises the steps of subjecting a polyphenylene sulfide resin as synthesized to a thermal treatment under an inert atmosphere at a temperature above 200°C so as to give a substantially linearly grown polyphenylene sulfide resin having an increased melt viscosity of not less than 800 poises, and then curing the substantially linear resin by heating it under an oxidative atmosphere at a temperature above 200°C so as to produce a polyphenylene sulfide resin having a still more increased melt viscosity of not less than 5,000 poises.
    • 聚苯硫醚树脂的脆性明显降低,相应的韧性通过两步法显着提高,其包括以下步骤:将合成的聚苯硫醚树脂在惰性气氛下在200℃以上进行热处理,以便 得到具有不低于800泊的熔融粘度增加的基本线性生长的聚苯硫醚树脂,然后在氧化气氛下在200℃以上的温度下加热使其固化,从而生成聚苯硫醚树脂 具有不小于5,000泊的更高的熔体粘度。