发明名称 |
Polyimides and co-polyimides based on dioxydiphthalic anhydride. |
摘要 |
<p>Novel polyimides and co-polyimides are prepared by the condensation polymerization of an aryl diamine with dioxydiphthalic anhydride or a mixture thereof with oxydiphthalic anhydride. The polyimides and co-polyimides prepared exhibit a low moisture absorption and improved dielectric properties and can be tailored to provide a composition having desirable mechanical properties, specifically, rigidity.</p> |
申请公布号 |
EP0398205(A2) |
申请公布日期 |
1990.11.22 |
申请号 |
EP19900109009 |
申请日期 |
1990.05.14 |
申请人 |
OCCIDENTAL CHEMICAL CORPORATION |
发明人 |
SCHWARTZ, WILLIS T.;STULTS, JEFFREY S. |
分类号 |
C08G73/10 |
主分类号 |
C08G73/10 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|