Optically brightening with a synergistic mixture
US4105399A · kind A · utility
3Cited by
4References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 26, 1976 |
| Grant date | Aug 8, 1978 |
| Priority date | — |
| Expiry date | Aug 26, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/924
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to the optically brightening of organic fibrous materials with compositions containing a mixture of 1.2-bis-[5-methyl-benzimidazol-(2)-yl]-ethylene and 2.5-bis-[benzoxazol-(2)-yl]-thiophene. The mixture of said brighteners show surprising synergistic effects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.