Patent ID: 6736864
Filing Date: 2004-05-18
Classification: C09B,Y10S

Abstract:
A reactive dye compound comprising:(a) at least one chromophore moiety (b) at least one SO2C2H4 group which is attached to the chromophoric moiety either directly via the sulphur atom of the SO2C2H4 group or via a linking group L; wherein L is a linking group selected from: NH, (CH2)n, Nâ€”(CH2)nN, â€”(CH2)nâ€”N, NR (R is C1-C4 alkyl) wherein Ar is an aryl group, preferably benzene; wherein Y is a phosphonate or borate derivative, under the proviso that if the phosphonate derivative is selected from phosphonates having the formula: â€”Oâ€”(P&boxH;O)(OH)Râ€²wherein Râ€² is any suitable nucleophilic moiety, Râ€² is not OH; wherein Z is a nitrogen-containing heterocycle; wherein n is an integer of from 1 to 4; wherein the dye compound is further characterized in that at least one SO2C2H4 group is substituted on its terminal carbon atom with at least one Y group; and salts thereof.