发明名称 |
Polyimide film, a method for its manufacture and a polyimide film containing metal laminated plate |
摘要 |
A polyimide film of birefringence less than 0.01 is formed by drawing a copolymerized polyimide comprising a block component and a random component which are molecularly bonded, wherein the block component of copolymerized polyimide comprises an aromatic diamine compound having a rigid structure and an aromatic tetracarboxylic acid compound and wherein the random component of copolymerized polyimide comprises an aromatic diamine compound having a flexible structure and at least two aromatic tetracarboxylic acid components. The resulting polyimide film has high elasticity, a low thermal expansion equivalent to that of metal and low water absorbing properties. A method for its manufacture and a metal laminated plate having improved curl properties in which the polyimide is used as the base material are also disclosed.
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申请公布号 |
US6277495(B1) |
申请公布日期 |
2001.08.21 |
申请号 |
US19980115133 |
申请日期 |
1998.07.14 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
SAWASAKI KOICHI;UHARA KENJI;KUBO MICHIHIRO |
分类号 |
B32B15/08;C08G73/10;C08J5/18;G02B5/30;H05K1/03;(IPC1-7):B32B15/08 |
主分类号 |
B32B15/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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