Substituted phenyl-benzimidazo compounds
US4001268A · kind A · utility
9Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 1975 |
| Grant date | Jan 4, 1977 |
| Priority date | — |
| Expiry date | Jul 18, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G73/18
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Substituted phenyl-benzimidazo compounds are disclosed in which the phenyl group which is attached to the two position of the imidazo ring contains a carboxylic acid group, or derivatives thereof, para to the point of imidazo attachment. The benzimidazo is substituted in the 5,6 positions with amino groups or derivatives thereof. The compounds are particularly useful as AB-monomers in the preparation of poly [(2,6-imidazobenzimidazo)1,4-phenylene].
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.