| 发明名称 |
Polyimides and copolyimides based on halo-oxydiphthalic anhydrides |
| 摘要 |
Novel halogenated polyimides and co-polyimides comprise recurring imide structural units of the formula <IMAGE> where X is F, Cl, Br or I; Y is H, F, Cl, Br or I; and R is a divalent organic radical.
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| 申请公布号 |
US5101006(A) |
申请公布日期 |
1992.03.31 |
| 申请号 |
US19910674802 |
申请日期 |
1991.03.25 |
| 申请人 |
OCCIDENTAL CHEMICAL CORPORATION |
发明人 |
STULTS, JEFFREY S.;SCHWARTZ, WILLIS T. |
| 分类号 |
C07C65/24;C07D491/14 |
主分类号 |
C07C65/24 |
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