Reactive dyes and use thereof for dyeing substrates...

Details Reactive dyes and use thereof for dyeing substrates... Reactive dyes and use thereof for dyeing substrates...

2006-01-24

2006-01-24

Einsmann, Margaret (Department: 1751)

Bleaching and dyeing; fluid treatment and chemical modification

Dyeing involving animal-derived natural fiber material ,...

Hair dyeing

C008S428000, C564S440000, C564S441000, C560S008000, C562S041000

Reexamination Certificate

active

06989036

ABSTRACT:
The present invention relates to novel reactive dyes of the formula (I)where R1to R4are independently hydrogen, C1–C8-alkyl, C2–C8-alkyl, wherein nonadjacent CH2groups may be replaced by oxygen atoms or imino or C1–C4-alkylimino groups and/or CH2groups by carbonyl groups, C2–C8-alkenyl, aryl, arylalkylene or a moiety containing a reactive group or the precursor of a reactive group,with the proviso that at least one of R1to R4is a moiety which contains a reactive group or the precursor of a reactive group.The present invention further relates to the use of the reactive dyes of the formula (I) for dyeing substrates containing nucleophilic groups and to preparations containing at least one reactive dye of the formula (I).

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