Blue dye mixtures of fiber-reactive copper complex formazan dyes
US6143039A · kind A · utility
1Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 12, 1999 |
| Grant date | Nov 7, 2000 |
| Priority date | — |
| Expiry date | Apr 12, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/918
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a dye mixture comprising one or more copper complex formazan dyes conforming to the formula (1) ##STR1## and one or more copper complex formazan dyes conforming to the formula (2) ##STR2## wherein R1, R2, Y1, Y2 and M are defined as given in claim 1, methods for preparing said dye mixtures and methods for dyeing and printing hydroxy- and/or carboxamido-containing materials using said dye mixtures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.