Process for dyeing leather with an aqueous bath containing sulfonated carbon black and black anionic dye
US5152801A · kind A · utility
41Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1990 |
| Grant date | Oct 6, 1992 |
| Priority date | — |
| Expiry date | Dec 5, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/916
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
There is disclosed a process for dyeing leather by the exhaust process, which comprises treating leather with an aqueous liquor which contains a formulation comprising a black anionic dye and a sulfonated carbon black. The leather dyeings obtained by this process have good allround fastness properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.