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    Process for producing fine flaky alumina particles and alumina-based plastic material
    5.
    发明公开
    Process for producing fine flaky alumina particles and alumina-based plastic material 失效
    一种用于基于氧化铝细薄片状粒子以及塑料的制备方法。

    公开(公告)号：EP0522519A2

    公开(公告)日：1993-01-13

    申请号：EP92111532.5

    申请日：1992-07-08

    申请人： AGENCY OF INDUSTRIAL SCIENCE & TECHNOLOGY MINISTRY OF INTERNATIONAL TRADE & INDUSTRY ,  YKK CORPORATION

    发明人： Shibasaki, Yasuo ,  Oda, Kiichi ,  Fukuda, Takeshi

    IPC分类号： C01F7/44 ,  C09C1/40 ,  C09D7/12

    CPC分类号： C01F7/021 ,  C01F7/448 ,  C01P2004/03 ,  C01P2004/20 ,  C01P2004/54 ,  C01P2004/62 ,  C08K7/00

    摘要： The present invention provides a process for producing fine flaky alumina particles suitable as a raw material for ceramics, a pigment for paint and etc., wherein aluminum hydroxide or alumina hydrate having a particle size regulated to the order of submicron is subjected to a hydrothermal treatment in water or an aqueous alkali solution at a temperature of 350°C or above under a pressure of 200 kg/cm² or below. The present invention further provides an alumina-based plastic material which is produced by kneading the aforesaid fine flaky particles with an organic water holding material and water. Methylcellulose, polyvinyl alcohol, carboxymethylcellulose, polyethylene glycol, etc. are preferably used as the organic water holding agent. The alumina-based plastic material has a high plasticity, so that there is no need of using a large amount of a binder. Thus a dense molded article having stable properties can be prepared.

    摘要翻译： 本发明提供一种制备适合作为原料陶瓷，涂料等的颜料细薄片状氧化铝颗粒，worin氢氧化铝或具有调节至亚微米级的粒径的氧化铝水合物的方法进行水热处理 在水中或在200公斤/厘米<2>或更低的压力下在350℃或以上的温度下wässrige碱性溶液。 对本发明的氧化铝基的塑料材料还提供了通过用在有机持水材料和水捏和上述细薄片状粒子产生的所有。 甲基纤维素，聚乙烯醇，羧甲基纤维素，聚乙二醇等，优选使用作为有机水保持剂。 该氧化铝基塑料材料具有高可塑性，所以thatthere不需要使用大量的粘合剂的。 因此，具有稳定的特性的密实模制品来制备。