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    • 10. 发明授权
    • Method of producing a hydrophilic resin
    • 亲水性树脂的制造方法
    • US6150469A
    • 2000-11-21
    • US930272
    • 1997-09-29
    • Nobuyuki HaradaShigeru SakamotoYoshihiro MotonoTadao Shimomura
    • Nobuyuki HaradaShigeru SakamotoYoshihiro MotonoTadao Shimomura
    • C08J3/20C08J3/24C08F8/00
    • C08J3/24C08J3/20C08J2300/14
    • A hydrophilic polymer is denatured with a gaseous denaturant or a powdery denaturant substance made from a liquid denaturant substance. The liquid denaturant substance is made into powders by, for example, a method of mixing the liquid denaturant substance with a water-insoluble compound, a method of cooling the liquid denaturant substance to or below its melting point to turn the same into a solid state. Consequently, the hydrophilic polymer can be denatured uniformly. In case that the hydrophilic polymer is denatured with a gaseous denaturant, the hydrophilic polymer and denaturant react with each other efficiently in a safe manner regardless of the size or shape of the hydrophilic polymer. In case that the hydrophilic polymer is denatured with the powdery denaturant substance, not only the liquid denaturant substance which is substantially in the solid state can be mixed with the hydrophilic polymer, but also the denaturation timing can be readily controlled.
    • PCT No.PCT / JP97 / 00229 Sec。 371日期:1997年9月29日 102(e)1997年9月29日PCT PCT 1997年1月31日PCT公布。 公开号WO97 / 28209 日期1997年8月7日亲水性聚合物由气态变性剂或由液体变性剂物质制成的粉末状变性剂变性。 液体变性剂物质通过例如将液体变性剂物质与水不溶性化合物混合的方法制成粉末,将液体变性剂物质冷却至其熔点以下以使其变为固态的方法 。 因此,亲水性聚合物可以均匀地变性。 亲水性聚合物在气态变性剂变性的情况下,无论亲水性聚合物的尺寸或形状如何,亲水性聚合物和变性剂以安全的方式有效地彼此反应。 亲水性聚合物与粉末状变性剂变性的情况下,不仅可以将基本上处于固体状态的液体变性剂与亲水性聚合物混合,而且可以容易地控制变性定时。