Asymmetrical reactive dyes containing two triazinyl radicals which are bridged via an aliphatic bridge member
US5684138A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 1996 |
| Grant date | Nov 4, 1997 |
| Priority date | — |
| Expiry date | May 29, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/043
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Reactive dyes of the formula ##STR1## in which R.sub.1, R.sub.2, R.sub.3 and R.sub.4 independently of one another are hydrogen or substituted or unsubstituted C.sub.1 -C.sub.4 alkyl, PA1 B is an aliphatic bridge member, PA1 Y.sub.1 and Y.sub.2 independently of one another are halogen or carboxypyridinium, PA1 A.sub.1 is the radical of an anthraquinone, phthalocyanine, dioxazine, formazan or disazo dye or a radical of the formulae (2a) to (2h) defined in claim 1 and PA1 A.sub.2 is as defined above for A.sub.1 or is a radical of the formulae (2i) to (2m), where A.sub.1 and A.sub.2 have different meanings to one another, are particularly suitable for dyeing or printing fibre materials containing hydroxyl groups or containing nitrogen. Dyeings having good fastness properties coupled with a high tinctorial yield are obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.