Reactive dyes, a process for their preparation and their use
View Patent ↗Reactive dyes of formula (1): wherein R 1 , is optionally substituted C 1 -C 4 alkyl, R 2 is halogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy or sulfo, Z 1 is a radical of formula —SO 2 —Y ( 2 a ), —CO—NH—(CH 2 ) K —SO 2 —Y ( 2 b ), —NH—CO—CH(Hal)—CH 2 —Hal ( 2 c ) —NH—CO—C(Hal)═CH 2 or ( 2 d ) wherein Hal is chlorine or bromine, Y is vinyl or a radical —CH 2 CH 2 —U and U is a group removable under alkaline conditions, k is the number 2, 3, 4, 5 or 6, n is the number 0, 1 or 2 and m is the number 0 or 1, are suitable for dyeing or printing cellulose-containing fibre materials, preferably natural or synthetic polyamide fibre materials, and produce, with a high colour yield, dyeings and prints having good fastness properties
1. A reactive dye of formula
wherein
R 1 is optionally substituted C 1 -C 4 alkyl,
R 2 is halogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy or sulfo,
Z 1 is a radical of formula
—SO 2 —Y (2a),
—CO—NH—(CH 2 ) k —SO 2 —Y (2b),
—NH—CO—CH(Hal)—CH 2 —Hal (2c)
or
—NH—CO—C(Hal)═CH 2 (2d)
wherein
Hal is chlorine or bromine,
Y is vinyl or a radical —CH 2 CH 2 —U and U is a group removable under alkaline conditions,
k is the number 2, 3, 4, 5 or 6,
n is the number 0, 1 or 2 and
m is the number 0 or 1.
2. A reactive dye according to claim 1 , wherein R 1 is methyl or ethyl.
3. A reactive dye according to claim 1 , wherein Z 1 is a radical of formula (2a) wherein Y is vinyl.
4. A reactive dye according to claim 1 , wherein m is the number 1 and n is the number 0.
5. A process for the preparation of a reactive dye of formula (1) according to claim 1 , which comprises reacting a compound of formula
and a compound of formula
with cyanuric chloride, R 1 , R 2 , Z 1 , m and n being as defined in claim 1 .
6. A process for dyeing or printing a hydroxyl-group-containing or nitrogen-containing fibre material, which comprises contacting said material with a tinctorially effective amount of at least one reactive dye of formula
wherein
R 1 is optionally substituted C 1 -C 4 alkyl,
R 2 is halogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy or sulfo,
Z 1 is a radical of formula
—SO 2 —Y (2a),
—CO—NH—(CH 2 ) k —SO 2 —Y (2b),
—NH—CO—CH(Hal)—CH 2 —Hal (2c)
or
—NH—CO—C(Hal)═CH 2 (2d)
wherein
Hal is chlorine or bromine,
Y is vinyl or a radical —CH 2 CH 2 —U and U is a group removable under alkaline conditions,
k is the number 2, 3, 4, 5 or 6,
n is the number 0, 1 or 2 and
m is the number 0 or 1; together with
at least one reactive dye selected from the group of formulae
wherein
R 3 , R 4 , R 8 , R 9 , R 12 , R 13 and R 16 are each independently of the others hydrogen or unsubstituted or substituted C 1 -C 4 alkyl,
R 5 , R 10 , R 14 and R 17 are each independently of the others halogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy or sulfo, (R 6 ) 0-2 and (R 11 ) 0-2 are each independently of the other 0, 1 or 2 substituents selected from the group C 1 -C 4 alkyl, C 1 -C 4 alkoxy, C 2 -C 4 alkanoylamino, ureido, sulfamoyl, halogen, sulfo and carboxy, R 7 is amino or N-mono- or N,N-di-C 1 -C 4 alkylamino,
R 15 is C 1 -C 4 alkyl, carboxy, unsubstituted C 1 -C 4 alkoxy or C 1 -C 4 alkoxy substituted by carboxy,
K is a phenyl radical, which is substituted by 0, 1, 2 or 3 substituents selected from the group C 1 -C 4 alkyl, C 1 -C 4 alkoxy, sulfamoyl, carbamoyl, halogen, sulfo and carboxy, or is a naphthyl radical substituted by 1, 2 or 3 sulfo groups,
Z 2 , Z 3 , Z 4 and Z 5 , each independently of the others, have the definitions given for Z 1 , q is the number 0 or 1, and
r, s, t and v are each independently of the others the number 0, 1 or 2.
7. A process according to claim 6 , which comprises using at least one reactive dye of formula (1) together with a reactive dye of formula (6), wherein R 1 , R 2 , R 12 , R 13 , R 14 , R 15 , K, Z 1 , Z 4 , m, n and t are as defined in claim 6 .
8. A process according to claim 6 , wherein a natural or synthetic polyamide fibre material is dyed or printed.
9. A process for dyeing or printing a hydroxyl-group-containing or nitrogen-containing fibre material, which comprises contacting said material with a tinctorially effective amount of at least one reactive dye of formula
wherein
R 1 is optionally substituted C 1 -C 4 alkyl,
R 2 is halogen, C 1 -C 4 alkyl, C 1 -C 4 alkoxy or sulfo,
Z 1 is a radical of formula
—SO 2 —Y (2a),
—CO—NH—(CH 2 ) k —SO 2 —Y (2b),
—NH—CO—CH(Hal)—CH 2 —Hal (2c)
or
—NH—CO—C(Hal)═CH 2 (2d)
wherein
Hal is chlorine or bromine,
Y is vinyl or a radical —CH 2 CH 2 —U and U is a group removable under alkaline conditions,
k is the number 2, 3, 4, 5 or 6,
n is the number 0, 1 or 2 and
m is the number 0 or 1.
10. A process according to claim 9 , wherein a natural or synthetic polyamide fibre material is dyed or printed.
11. A process according to claim 9 , wherein a synthetic polyamide fibre material is dyed or printed.