Process for the coloring of paper with disazo dyes containing sulfonated-naphthol groups to give fast blue shades
US5034017A · kind A · utility
3Cited by
1References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 1990 |
| Grant date | Jul 23, 1991 |
| Priority date | — |
| Expiry date | Mar 21, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/919
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Dyestuffs of the formula ##STR1## in which the substituents have the meanings given in the description are highly suitable for the coloration of paper. They produce light and wetfast blue coloring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.