Patent ID: 8293877

Claim:
A reactive dyestuff with a N-alkylamino group of the following formula (I), wherein, A 1 and A 2 each independently are selected from the group consisting of unsubstituted or substituted monoazo, disazo, polyazo and metal complex azo components; X 1 and X 2 each independently are halogen, hydroxyl, quaternary ammonium or -NR 1 R 2 ; R 1 , R 2 , R 3 and R 4 each independently are hydrogen, C 1-4 alkyl, C 1-4 alkylcarbonyl, phenyl, nitroso, or C 1-4 alkyl substituted by halogen, hydroxyl, carboxyl or sulfo; (R 5 ) 0-2 and (R 6 ) 0-2 each independently are 0 to 2 identical or different groups, and each of R 5 and R 6 independently is selected from the group consisting of hydrogen, halogen, hydroxyl, carboxyl, sulfo, nitro, cyano, C 1-4 alkyl, C 1-4 alkoxy, ureido and amido; (Z 1 ) 0-1 and (Z 2 ) 0-1 each independently are 0 to 1 reactive group and not simultaneously 0 reactive group, and each of Z 1 and Z 2 independently is selected from the group consisting of —SO 2 —U, —CONH—(CH 2 ) k —SO 2 —U, —O—(CH 2 ) s —CONH—(CH 2 ) t —SO 2 —U,β-thiosulfatoethylsulfonyl and —N(R′)—U′; U is —CH 2 CH 2 W, —CH═CH 2 and —CH 2 CH 2 OH; W is a leaving group eliminable by a base, which is —Cl, —OSO 3 H, —OPO 3 H, quaternary ammonium, pyridine, carboxypyridinium, methylpyridinium or carbonamidopyridinium; U′ is α,β-halopropionyl, α-haloacryloyl, β-halopropionyl or α-haloacryloyl; R′ is hydrogen or C 1-4 alkyl; and k, n, s and t each independently are 2, 3 or 4.