Method for preparing carboxylic polybenzimidazole
US8653203B2 · kind B2 · utility
0Cited by
1References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 2011 |
| Grant date | Feb 18, 2014 |
| Priority date | — |
| Expiry date | Jun 1, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for preparing a carboxylic polybenzimidazole includes reacting a polybenzimidazole polymer with a cyclic acid anhydride to form the carboxylic polybenzimidazole.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.