Process for the trichromatic dyeing of leather
US4799933A · kind A · utility
1Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 12, 1987 |
| Grant date | Jan 24, 1989 |
| Priority date | — |
| Expiry date | Jan 12, 2007 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06P3/3206
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A mixture comprising a yellow dye and a red dye each of formula I and a grey dye of formula II is employed in accordance with claim 1 for the trichromatic dyeing of leather.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.