Patent ID: 7390889

Claim:
A trisazo reactive dyestuff compound of the following formula (I), wherein R is —OH, —NR 2 R 3 , or wherein R 2 and R 3 each independently are selected from the group consisting of hydrogen, C 1-4 alkyl unsubstituted or substituted by at least one group selected from the group consisting of hydroxyl, carboxyl, sulfo, and C 2-6 alkoxycarbonyl, and phenyl unsubstituted or substituted by at least one group selected from the group consisting of hydroxyl, carboxyl, sulfo, and C 2-6 alkoxycarbonyl; R 8 , R 9 , and R 10 each independently are C 1-4 alkyl; D is the group of the following formula (D-a), wherein, (R 1 ) 0-4 is 0, 1, 2, 3, or 4 R 1 groups, and each R 1 independently is identical or different and selected from the group consisting of halogen, hydroxyl, carboxyl, sulfo, C 1-4 alkyl, C 1-4 alkoxy, and C 2-6 alkoxycarbonyl; A and B each independently are the group of the following formula (D-b), Wherein, R 1 is defined as above; Q is selected from the group consisting of —NH—CO—CHX—CH 2 —X, —NH—CO—CX═CH 2 , —CONH(CH 2 ) n —SO 2 —Y, and —SO 2 —Y, wherein, X is halogen; Y is —CH═CH 2 or —CH 2 CH 2 U; and U is a leaving group which is eliminable by a base; and m and n are integers independent of one another between 2 to 3.