发明名称 |
Colored polyimide molded article, and process for production thereof |
摘要 |
Disclosed is a process for production of a colored polyimide molded article including the steps of molding a polyamic acid solution composition containing a polyamic acid solution obtained from at least a tetracarboxylic acid component and a diamine component and a coloring precursor, or a polyimide solution composition containing a polyimide solution and a coloring precursor; and then thermally treating a molded product at 250° C. or higher. |
申请公布号 |
US9346927(B2) |
申请公布日期 |
2016.05.24 |
申请号 |
US201013500771 |
申请日期 |
2010.10.08 |
申请人 |
UBE INDUSTRIES, LTD. |
发明人 |
Ohya Shyusei;Matsuo Makoto |
分类号 |
B32B27/34;C08L79/08;B32B5/18;B29C71/02;B29C67/20;C08J5/18;C08J3/21;C08J9/00;C08J9/28;C08J9/34 |
主分类号 |
B32B27/34 |
代理机构 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
代理人 |
Oblon, McClelland, Maier & Neustadt, L.L.P. |
主权项 |
1. A process for producing a colored polyimide molded article, the process comprising:
(a) dipping a film obtained by casting
a polyamic composition comprising a polyamic acid solution and a coloring precursor in a poor solvent against the polyamic acid to fabricate a porous polyamic acid film, where the polyamic acid solution is obtained from at least one tetracarboxylic acid and a diamine; and (b) thermally treating the porous polyamic acid film at a temperature of from 350 to 500° C. to obtain the colored polyimide molded article, which is a colored polyimide porous membrane, wherein the coloring precursor is a polymer obtained from an acrylonitrile-comprising monomer, and no carbon black is present in the polyamic composition the tetracarboxylic acid is at least one selected from the group consisting of a biphenyltetracarboxylic dianhydride and pyromellitic dianhydride; and the diamine is at least one selected from the group consisting of p-phenylenediamine diaminodiphenyl ether, and bis(aminophenoxy)benzene. |
地址 |
Ube-shi JP |