Patent ID: 7326777

Claim:
A fiber reactive dyestuff of formula (I), wherein Z is X is quaternary ammonium salt, pyridine, 3-carboxypyridine-1-yl, 4-carboxypyridin-1-yl, methylpyridinium, or carbamoylpyridinium; Y is —OH, vinyl or —CH 2 —CH 2 —W, wherein W is a leaving group which is eliminable by a base; I is sulfo, C 1˜4 alkyl, C 1˜4 alkoxyl or C 1˜4 alkoxycarbonyl; p is 0, 1, 2 or 3; Q is —SO 2 —Y, —CONH—(CH 2 ) n —SO 2 —Y, —(O) o —(CH 2 ) m —CONH—(CH 2 ) n —SO 2 —Y, or —NH—CO-T, wherein Y is defined as the aforementioned, T is α, β-dihalopropionyl or α-haloacryloyl, n and m are independently of one another an integer between 1 to 6; p is defined as the aforementioned; o is 0, 1, 2 or 3; R, R 1 and R 2 are each independently of one another a hydrogen atom, C 1˜4 alkyl, or C 1˜4 alkyl substituted by a halogen atom, hydroxyl, cyano, C 1˜4 alkoxyl, C 1˜4 alkoxycarbonyl, carboxyl, sulfo, or sulfato; when R is a hydrogen atom, X is quaternary ammonium salt, pyridine, 4-carboxypyridin-1-yl or methylpyridinium; when R is —CH 2 CH 2 COOH, X is quaternary ammonium salt, pyridine, methylpyridinium or carbamoylpyridinium; and D is a chromophore group having one or more reactive or non-reactive groups, wherein said one or more reactive groups are each independently selected from the Q groups set forth above, and said chromophore group is selected from the group consisting of formazan chromophore, anthraquinone, phthalocyanine, triphendioxazine, monoazo, polyazo, and metal complex azo.