Benzofuranyl-benzimidazoles
US4146725A · kind A · utility
16Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 15, 1977 |
| Grant date | Mar 27, 1979 |
| Priority date | — |
| Expiry date | Jul 15, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/927
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed are novel benzofuranyl benzimidazoles and a method for their preparation. The novel benzofuranyl benzimidazoles are useful as optical brighteners for optically brightening a wide variety of synthetic, regenerated or natural organic materials or substances, which contain such organic materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.