Liquid preparation of cationic dye mixture containing aliphatic carboxylic acid for black dyeing
US4536185A · kind A · utility
2Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1983 |
| Grant date | Aug 20, 1985 |
| Priority date | — |
| Expiry date | Dec 23, 2003 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S534/01
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A novel liquid preparation containing a mixture of dyes according to claim 1, an aliphatic carboxylic acid, and optionally water and organic solvents. This novel preparation is storage-stable and temperature-stable and can be used in particular for dyeing polyacrylonitrile materials in black shades, the dyeings obtained having a neutral shade, negligible change of shade in artificial light and very good fastness to light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.