Reactive dyestuffs containing chlorine or fluorine substituents and one or more 1,3-dicyanobenzene radicals linked to the dyestuff at the 2-, 4- or 6-position
Abstract
Abstract Dyestuffs are provided which contain one or more 1,3-dicyanobenzene radicals linked to the dyestuff at the 2-, 4- or 6-position, with halogen substituents in both of the remaining two of these positions and an electron-attracting substituent in the 5-position. These dyestuffs reactively dye cellulose at low temperatures and are less prone to "acid-bleeding" than some known reactive dyes. More particularly, those dyestuffs have the formula: <IMAGE> (1) where D is a chromophoric group n is 1 or 2, <IMAGE> where R is H, C1-4alkyl, C1-4alkyl substituted by OH, OSO3H, CN or SO3H or is phenyl. Each hal independently represents a chlorine or fluorine atom occupying one of the remaining 2-, 4- and 6-positions of the benzene nucleus, and Y is H, F, Cl, CN, NO2 or SO3H.
Inventors
- 👤 Brian Anderson
Bibliographic Details
Claims Analysis
Total Claims: 6References Cited (Backward Citations)
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