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1. 发明授权

US06335418B1 Functional polyamic acid microfine particles, functional polyimide microfine particles, and processes for their production 有权
标题翻译：功能性聚酰胺酸微粒，功能性聚酰亚胺微粒，及其制造方法
公开(公告)号：US06335418B1
公开(公告)日：2002-01-01
申请号：US09640872
申请日：2000-08-18
申请人： Katsuya Asao , Hitoshi Morita , Hitoshi Onishi , Masaki Kimoto , Yayoi Yoshioka , Hidenori Saito
发明人： Katsuya Asao , Hitoshi Morita , Hitoshi Onishi , Masaki Kimoto , Yayoi Yoshioka , Hidenori Saito
IPC分类号： C08G7310
CPC分类号： C08J3/12 , C08G73/1007 , C08G73/1032 , C08J2379/08 , C08L79/08
摘要： A primary object of the invention is to provide a production technology for functional polyamic acid microfine particles and functional polyimide microfine particles by which the particle shape, size and size distribution can be freely controlled. The invention is concerned with a process for synthesizing polyamic acid particles having functional groups at least on the surface from a tetracarboxylic anhydride and a diamine compound characterized by its comprising (a) a first step which comprises providing a tetracarboxylic anhydride and a diamine compound at least one of which has functional groups and preparing a first solution containing the tetracarboxylic anhydride and a second solution containing the diamine compound and (b) a second step which comprises mixing the first and second solutions under ultrasonic agitation to thereby precipitate polyamic acid microfine particles from the mixed solution. The invention is further concerned with a process which comprises imidating the above polyamic acid particles to provide polyimide microfine particles.
摘要翻译：本发明的主要目的是提供功能性聚酰胺酸微粒和功能性聚酰亚胺微粒的生产技术，通过该技术可以自由地控制颗粒形状，尺寸和尺寸分布。本发明涉及至少在四羧酸酐和二胺化合物的至少表面上具有官能团的聚酰胺酸颗粒的方法，其特征在于其包含（a）第一步骤，其包括至少提供四羧酸酐和二胺化合物其中一个具有官能团并制备含有四羧酸酐的第一溶液和含有二胺化合物的第二溶液和（b）第二步骤，其包括在超声波搅拌下混合第一溶液和第二溶液，从而将聚酰胺酸微粒从混合溶液。本发明还涉及一种方法，其包括将上述聚酰胺酸颗粒酰亚胺化以提供聚酰亚胺微粒。

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