| 发明名称 |
Aromatic polymers having phenylene groups linked by oxygen atoms, keto groups and sulphone groups |
| 摘要 |
Copolymers containing 40 to 90 mole % of repeat units <IMAGE> and correspondingly 10 to 60 mole % of repeat units <IMAGE> where Q and Q' are -SO2- or -CO- and the number of -SO2- groups is 3 to 25% of the total number of -SO2- and -CO- groups.
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| 申请公布号 |
US4186262(A) |
申请公布日期 |
1980.01.29 |
| 申请号 |
US19790005824 |
申请日期 |
1979.01.23 |
| 申请人 |
IMPERIAL CHEMICAL INDUSTRIES LTD |
发明人 |
FREEMAN, JOHN L;ROSE, JOHN B |
| 分类号 |
C08G65/40;C08G75/23;(IPC1-7):C08G65/40 |
主分类号 |
C08G65/40 |
| 代理机构 |
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