Patent ID: 7442780

Claim:
A reactive dye compound having the formula (I) below: wherein D is a chromophore; L is a linking moiety, preferably selected from the group consisting of —NR—, —C(O)NR—, —NRSO 2 —, —(CH 2 ) k — and —SO 2 —(CH 2 ) k — wherein R is H or C 1 -C 4 alkyl which can be substituted by halogen, preferably fluorine or chlorine, hydroxyl, cyano, C 1 -C 4 alkoxy, C 2 -C 5 alkoxycarbonyl, carboxyl, sulfamoyl, sulfo or sulfato and wherein k is an integer with a value between 1 and 4; Z is any moiety forming at least three covalent bonds with other moieties, preferably selected from the group consisting of nitrogen (N), and aromatic compounds, more preferably from the group consisting of aromatic compounds activated by electron withdrawing groups and N-heterocycles, even more preferably from the group consisting of triazine, pyrimidine, quinoxaline, pyrimidinone, phthalazine, pyridazone, pyrazine and still more preferably from the group consisting of triazine, pyrimidine, and quinoxaline, still even more preferably from triazine; Y is any leaving group, preferably selected from the group consisting of —Cl, —Br, —F, —I, —SO 3 H, —OSO 3 H, —SSO 3 H, —O—C 6 H 4 —SO 3 H, —OCO—CH 3 , —OPO 3 H 2 , —OCO—C 6 H 5 , —OSO 2 —C 1 -C 4 alkyl, —OSO 2 —N(C 1 -C 4 alkyl) 2 , and quaternized nitrogen derivatives, more preferably selected from the group consisting of —Cl, —Br, —F and —OSO 3 H, even more preferably from the group consisting of —F and —Cl when Y is bonded to an N-containing heterocycle and —Br when Y is bonded to G1 is selected from the group consisting of Y and —B—G2; G2 is selected from the group consisting of B is a bridging moiety selected from the group consisting of —S—, and —S—CR′ 2 —CR′ 2 — wherein R′ is selected from the group consisting of H, C1-C10 alkyl group, C1-C10 carboxylic acid and sulphonate, preferably H; and wherein R″ is selected from the group consisting of H, C1-C4 alkyl group and —CR′ 2 —CR′ 2 —S—G2; B preferably being —NH—CH 2 —CH 2 —S— or —NH—CHCOOH—CH 2 —S—, wherein when there is more than one D, R, R′, R″, L, Z, Y, G1, G2 or B these are not necessarily the same; and wherein the reactive dye compound comprises at least one group G2; and salts and esters thereof.