Unsymmetrical triphenodioxazine dyes
US5126450A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 1, 1990 |
| Grant date | Jun 30, 1992 |
| Priority date | — |
| Expiry date | Nov 1, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/918
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Unsymmetrical triphendioxazine (TPD) reactive dyes of Formula (1) for the colouration of e.g. wool, silk, leather and cotton are claimed as well as intermediates for their manufacture. ##STR1## wherein W.sup.1 and W.sup.2 are different and each independently of the formula: ##STR2## R.sup.1 and R.sup.2 in each group defined by W.sup.1 or W.sup.2 independently represent H or an optionally substituted hydrocarbon radical or are joined together to form, with B and the two N atoms, a piperazine ring; PA1 each x independently has a value of 0 or 1; PA1 each B independently represents an optionally substituted divalent hydrocarbon radical; PA1 each Z independently represents a fibre-reactive group; PA1 T.sup.1 and T.sup.2 each independently represents H, Cl, Br, F, SO.sub.3 H or an optionally substituted alkyl or aryl radical; PA1 A.sup.1 and A.sup.2 each independently represents an alkyl, alkoxy, Cl, Br, COOH, SO.sub.3 H or optionally substituted sulphamoyl radical; PA1 each n independently has a value of 0, 1 or 2; and PA1 each m independently has a value of 1 or 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.