Fiber reactive dyestuffs

A fiber reactive dyestuff of the following formula (I),

• wherein
• Z is a group of the following formula
• wherein X is a halogen atom, quaternary ammonium salt, pyridine, 3-carboxypyridine-1-yl, 4-carboxypyridin-1-yl, methylpyridinium or carbamoylpyridinium;
• Y is —OH, vinyl or —CH2—CH2-W, wherein W is a leaving group which is eliminable by a base;
• I is sulfo, C1˜4 alkyl, C1˜4 alkoxyl or C1˜4 alkoxycarbonyl;
• p is 0, 1, 2 or 3;
• Q is —SO2—Y, —CONH—(CH2)n—SO2—Y, —(O)o—(CH2)m—CONH—(CH2)n—SO2—Y, or —NH—CO-T, wherein Y is defined the same 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 the same as the aforementioned;
• o is 0, 1, 2 or 3;
• R, R1 and R2 are each independently of one another denotes hydrogen atom, C1˜4 alkyl, or C1˜4 alkyl substituted by halogen atom, hydroxyl, cyano, C1˜4 alkoxyl, C1˜4 alkoxycarbonyl, carboxyl, sulfo, or sulfato;
• while R is hydrogen atom, X is quaternary ammonium salts, pyridine, 4-carboxypyridin-1-yl or methylpyridinium;
• while R is —CH2CH2COOH, X is quaternary ammonium salt, pyridine, methylpyridinium or carbamoylpyridinium;
• D is a chromophore group having reactive or non reactive groups, wherein said reactive groups may be one or more each independently selected from the Q group defined the same as above, said chromophore group is selected from the group consisting of:
• formazan chromophore, anthraquinone, phthalocyanine, triphendioxazine, monoazo, polyazo and metal complex azo.