Process for producing fine flaky alumina particles and alumina-based
plastic material
    2.
    发明授权
    Process for producing fine flaky alumina particles and alumina-based plastic material 失效
    用于生产细片状氧化铝颗粒和氧化铝基塑料材料的方法

    公开(公告)号:US6080380A

    公开(公告)日:2000-06-27

    申请号:US301734

    申请日:1994-09-07

    IPC分类号: C01F7/02 C01F7/44 C08K7/00

    摘要: The present invention provides a process for producing fine flaky alumina particles which are suitable as a raw material for ceramics, a pigment for paint, 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.degree. C. or above and under a pressure of 200 kg/cm.sup.2 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: 本发明提供一种生产适合作为陶瓷原料的细片状氧化铝颗粒的方法,用于涂料的颜料等,其中具有调节到亚微米量级的粒度的氢氧化铝或氧化铝水合物经受 在350℃或更高的温度和200kg / cm 2或更低的压力下,在水或碱水溶液中进行水热处理。 本发明还提供一种通过将上述细片状颗粒与有机保水材料和水捏合而制成的氧化铝基塑料。 优选使用甲基纤维素,聚乙烯醇,羧甲基纤维素,聚乙二醇等作为有机保水剂。 氧化铝基塑料具有高塑性,因此不需要使用大量的粘合剂。 因此,可以制备具有稳定性能的致密模制品。

    Process for producing fine flaky alumina particles and alumina-based
plastic material
    6.
    发明授权
    Process for producing fine flaky alumina particles and alumina-based plastic material 失效
    用于生产细片状氧化铝颗粒和氧化铝基塑料材料的方法

    公开(公告)号:US5587010A

    公开(公告)日:1996-12-24

    申请号:US491114

    申请日:1995-06-16

    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.degree. C. or above under a pressure of 200 kg/cm.sup.2 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: 本发明提供一种适合作为陶瓷原料的细片状氧化铝粒子的制造方法,涂料用颜料等,其中将具有亚微米级的粒径的氢氧化铝或水合氧化铝进行水热处理 在水或碱水溶液中,在350℃以上的温度下,在200kg / cm 2以下的压力下进行。 本发明还提供一种通过将上述细片状颗粒与有机保水材料和水捏合而制成的氧化铝基塑料。 优选使用甲基纤维素,聚乙烯醇,羧甲基纤维素,聚乙二醇等作为有机保水剂。 氧化铝基塑料具有高塑性,因此不需要使用大量的粘合剂。 因此,可以制备具有稳定性能的致密模制品。