发明名称 |
COPOLYIMIDE ODPA/BPDA/4,4'-ODA/P-PHENYLENEDIAMINE |
摘要 |
<p>Case 5962/6118 JHE/kmf 10/24/89 COPOLYMIDE ODPA/BPDA/4,4'-ODA or p-PDA Polyimide copolymers of the following formulas are disclosed: The first is a copolyimide of the recurring structure wherein AR may be either AR1 or AR2, wherein AR1 is represented by the following formula: and wherein AR2 is represented by the following formula: provided that the molar ratio between AR1 and AR2 is in the range from 3:1 to 1:3 and wherein AR3 is selected from the group consisting of and The second is a block copolyimide in which the following two recurring structures exist as blocks wherein block 1 is where AR1 is wherein block 2 is where AR2 is provided that the molar ratio of block 1 to block 2 is in the range of 3:1 to 1:3 and wherein AR3 is selected from the group consisting of and These polyimides have unexpected properties which are useful in various electronic applications.</p> |
申请公布号 |
CA2027957(A1) |
申请公布日期 |
1991.04.27 |
申请号 |
CA19902027957 |
申请日期 |
1990.10.18 |
申请人 |
METERKO, TIMOTHY A.;MUNDHENKE, RUDOLPH F.;SCHWARTZ, WILLIS T. |
发明人 |
METERKO, TIMOTHY A.;MUNDHENKE, RUDOLPH F.;SCHWARTZ, WILLIS T. |
分类号 |
B32B7/12;C08G73/10;C08J5/18;C09D179/08;C09J7/02;H01B3/30;H01L21/52;H01L23/14;(IPC1-7):C08G73/10;B05D5/12;H01B13/32;H01L21/60;H01B3/38 |
主分类号 |
B32B7/12 |
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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