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US 6,407,220 B1Granted
Reactive formazan dyestuffs
AssigneeEverlight USA, Inc.
InventorsHuei Ching Huang, Wen-Jang Chen
Life of this patent
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Abstract
The present invention provides reactive formazan dyestuffs of the general formula (I), Wherein A, B, D, Me, Q, R, and Z are defined in this document. The dyes according to the invention are distinguished by high fixation and a very good build-up. They are distinguished also by a low substantivity and a high exhaustion, and they have fiber-reactive properties and are very highly suitable for dyeing and printing of materials containing either cellulose fibers.
Claims22
A reactive formazane dyestuff of the following formula (I):
- wherein:
- A is phenyl or naphthyl having 1 to 4 substituent groups, said substituent groups are selected from the group consisting of halogen, C1-4 alkyl, C1-4 alkoxyl, nitro, amino, hydroxyl, carboxyl, phosphonic acid and sulfo group, and wherein at least one substituent group is a sulfo group, said sulfo group is in the position ortho to the N-atom of hydrazone compound;
- B is a straight or branched C1-8 alkyl, or a phenyl, naphthyl or heteroaromatic group having 0 to 3 substituent groups, said substituent groups are selected from the group consisting of halogen, C1-4 alkyl, C1-4 alkoxyl, nitro, amino, hydroxyl, carboxyl, phosphonic acid and sulfo group, said heteroaromatic group is selected from the group consisting of:
- furan, thiophene, pyrrole, imidazole, pyrazole, pyridine, pyrimidine, quinoline, or benzimidazole;
- G is a phenyl or naphthyl having 0 to 3 substituent groups, said substituent groups are selected from the group consisting of halogen, C1-4 alkyl, C1-4 alkoxyl, nitro, amino, hydroxyl, carboxyl, phosphonic acid and sulfo group;
- Q is —NHCN, —OH, —SCH2COOH or 3-carboxypyridinium;
- D s a phenyl or naphthyl having 0 to 3 substituent groups, said substituent groups are selected from the group consisting of halogen, C1-4 alkyl, C1-4 alkoxyl, nitro, amino, hydroxyl, carboxyl, phosphonic acid and sulfo group;
- Me is Cu, Ni or Co metal ion;
- R is H, C1-8 alkyl, or C1-8 alkyl having at least one substituent group, said substituent group is selected from the group consisting of hydroxyl, carboxyl, sulfo, carbamoyl, and methoxy carbonyl;
- Z is —SO2—Y, —CONH—(CH2)h—SO2—Y, —(O)p—(CH2)g—CONH—(CH2)h—SO2—Y, or —NH—CO—T;
- Y is —CH═CH2, or —CH2—CH2—U;
- U is —OSO3H, Cl, Br, —OPO3H2, —SSO3H or
- T is α, β-halopropionyl or α-haloacryloyl;
- g and h independently are an integer from 1 to 6;
- P is the number 0 or 1.
12 more elements
Dependencies are inferred from the claim text.