发明名称 |
Polybenzimidazole compounds, polymeric media, and methods of post-polymerization modifications |
摘要 |
A PBI compound includes imidazole nitrogens at least a portion of which are substituted with a moiety containing a carbonyl group, the substituted imidazole nitrogens being bonded to carbon of the carbonyl group. At least 85% of the nitrogens may be substituted. The carbonyl-containing moiety may include RCO-, where R is alkoxy or haloalkyl. The PBI compound may exhibit a first temperature marking an onset of weight loss corresponding to reversion of the substituted PBI that is less than a second temperature marking an onset of decomposition of an otherwise identical PBI compound without the substituted moiety. The PBI compound may be included in separatory media. A substituted PBI synthesis method may include providing a parent PBI in a less than 5 wt % solvent solution. Substituting may use more than 5 equivalents in relation to the imidazole nitrogens to be substituted.
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申请公布号 |
US2005272880(A1) |
申请公布日期 |
2005.12.08 |
申请号 |
US20040969456 |
申请日期 |
2004.10.19 |
申请人 |
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发明人 |
KLAEHN JOHN R.;PETERSON ERIC S.;ORME CHRISTOPHER J.;JONES MICHAEL G.;WERTSCHING ALAN K.;LUTHER THOMAS A.;TROWBRIDGE TAMMY L. |
分类号 |
C08G63/02;C08G69/48;C08G73/18;C08J3/00;(IPC1-7):C08G69/48 |
主分类号 |
C08G63/02 |
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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