发明申请
- 专利标题: Polybenzimidazole compounds, polymeric media, and methods of post-polymerization modifications
- 专利标题(中): 聚苯并咪唑化合物,聚合物介质和后聚合修饰方法
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申请号: US10969456申请日: 2004-10-19
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公开(公告)号: US20050272880A1公开(公告)日: 2005-12-08
- 发明人: John Klaehn , Eric Peterson , Christopher Orme , Michael Jones , Alan Wertsching , Thomas Luther , Tammy Trowbridge
- 申请人: John Klaehn , Eric Peterson , Christopher Orme , Michael Jones , Alan Wertsching , Thomas Luther , Tammy Trowbridge
- 专利权人: Bechtel BWXT Idaho, LLC
- 当前专利权人: Bechtel BWXT Idaho, LLC
- 主分类号: C08G63/02
- IPC分类号: C08G63/02 ; C08G69/48 ; C08G73/18 ; C08J3/00
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.