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    • 16. 发明授权
    • Process for producing thermoplastic resin
    • 制造热塑性树脂的方法
    • US4487857A
    • 1984-12-11
    • US515663
    • 1983-07-20
    • Teruhiko SugimoriNoriyuki Tajiri
    • Teruhiko SugimoriNoriyuki Tajiri
    • C08F6/22C08F6/00C08G6/00C08J3/00
    • C08F6/22
    • A process for producing a thermoplastic resin capable of giving a molded article having a very good appearance, by coagulating a thermoplastic resin latex prepared by an emulsion polymerization method which comprises making the latex into a coagulated slurry by carrying out the coagulation procedure in a range of temperatures lower than the solidifying point of the thermoplastic resin, adding an alkaline substance to said coagulated slurry in a range of temperatures lower than the aforesaid solidifying point so that the pH of said coagulated slurry is adjusted to a pH 0.1 or more higher than its pH at the time of the coagulation and that the pH of the whole coagulated slurry after the addition of the alkaline substance is adjusted to 7.0 or lower, and then raising the temperature of said coagulated slurry to solidify the coagulated particles.
    • 一种能够提供具有非常好的外观的模塑制品的热塑性树脂的方法,其通过使通过乳液聚合方法制备的热塑性树脂胶乳凝结,所述热塑性树脂胶乳包括通过在一定范围内进行凝固程序将胶乳进入凝固浆液 温度低于热塑性树脂的凝固点,在低于上述固化点的温度范围内向所述凝固浆料中加入碱性物质,使得所述凝固浆液的pH调节至比其pH高0.1℃或更高 凝固时,将碱性物质添加后的整个凝固浆料的pH调节至7.0以下,然后使所述凝固浆料的温度升高,凝固凝固粒子。