发明名称 |
Polyimide film and process for producing polyimide film |
摘要 |
A polyimide film, which is produced by the reaction of a tetracarboxylic acid component comprising 3,3′,4,4′-biphenyltetracarboxylic dianhydride as the main component and a diamine component comprising p-phenylenediamine as the main component, is heated at a temperature of from 460° C. to 550° C., and then water or an alkaline aqueous solution is sprayed on a surface of the polyimide film for surface treatment, thereby improving adhesiveness, while maintaining the excellent properties inherent in the polyimide film. |
申请公布号 |
US9393720(B2) |
申请公布日期 |
2016.07.19 |
申请号 |
US201013391011 |
申请日期 |
2010.08.18 |
申请人 |
UBE INDUSTRIES, LTD. |
发明人 |
Hisano Nobuharu;Murakami Taizou;Kohda Masafumi;Yamaguchi Hiroaki |
分类号 |
B29C39/14;B29C41/24;C08G73/10;C08J7/02;B29C71/02;C08L79/08;H05K3/38;B29K79/00;H05K1/03 |
主分类号 |
B29C39/14 |
代理机构 |
Knobbe Martens Olson & Bear LLP |
代理人 |
Knobbe Martens Olson & Bear LLP |
主权项 |
1. A process for producing a polyimide film, comprising:
flow-casting a solution of a polyamic acid or a polyimide, which is prepared by reacting a tetracarboxylic acid component comprising 3,3′,4,4′-biphenyltetracarboxylic dianhydride as the main component and a diamine component comprising p-phenylenediamine as the main component, on a support, and drying the solution to form a self-supporting film; heating the self-supporting film to provide a polyimide film; heating the resulting polyimide film at a temperature of 460° C. to 550° C.; and spraying pure water on a surface of the heat-treated polyimide film. |
地址 |
Ube-Shi JP |