Back to results
US 5,047,067 AGranted
Reactive dyestuff composition for cellulose fibers: reactive dyes with similar hue but different reactive groups and substantivities
AssigneeHoechst Aktiengesellschaft
InventorsKoichi Miyazaki, Hachiro Hirooka
Life of this patent
Estimating the term…
Abstract
A reactive dyestuff composition containing, as a dyestuff component, at least two different reactive dyestuffs which present similar color hue upon dyeing cellulose and have different reactive groups and different substantivities is disclosed. Preferably, the composition contains at least one reactive dyestuff having either a .beta.-sulfatoethyl-sulfone group or vinylsulfone group and at least one reactive dyestuff having a halogenated triazine group. The composition is suitable for dyeing cellulose fibers.
Claims2
A reactive dyestuff composition comprising:
- a bromamic acid-condensed reactive dyestuff of the following formula (I):
- ##STR6## a copper-formazane reactive dyestuff of the formula (II):
- ##STR7## and a copper-formazane reactive dyestuff of the formula (III):
- ##STR8## wherein:
- R is --CH.sub.2 CH.sub.2 OSO.sub.3 M, or CH=CH.sub.2 ;
- M is a hydrogen atom, an alkali metal, an alkaline earth metal, or a quarternary amine;
- and
- X is a chlorine atom or fluorine atom, and the ratio of the reactive dyestuffs of the formulae (I), (II), and (III) is in the range of 3 to 7:6 to 2:1.
5 more elements
Dependencies are inferred from the claim text.