Reactive Dyes Containing Divalent Sulfur in Non-Reactive Side Chain at Trizine Nucleus
The present invention refers to dyestuffs of the formula (I) wherein R 1 , R 2 are independently H, optionally substituted alkyl or optionally substituted aryl, R 3 is optionally substituted alkyl or optionally substituted aryl, an organic acyl group (i.e. acetyl, propionyl, benzoyl etc.) or an organic thioacyl group (i.e. 10 thioacetyl, thiopropionyl, thiobenzoyl etc.), all of which may or may not bear a reactive group able to form a dye-fibre bond, R 4 is any coloured organic group, which may or may not bear a reactive group able to form a dye-fibre bond, L is any carbon containing linking group that is aliphatic, aromatic, or a combined alkyl-aryl group such as benzyl or phenethyl, X is halogen or tertiary ammonium or an optionally substitute aryl amine, processes for the preparation of said dyestuffs and their use for dyeing and printing hydroxy- and/or carboxamido-containing fiber materials.
1 - 9 . (canceled)
10 . A dyestuff of the general formula (I)
wherein
R 1 and R 2 are independently H, optionally substituted alkyl or optionally substituted aryl,
R 3 is optionally substituted alkyl or optionally substituted aryl, an organic acyl group or an organic thioacyl group, all of which may or may not bear a reactive group able to form a dye-fibre bond,
R 4 is any colored organic group, which may or may not bear a reactive group able to form a dye-fibre bond,
L is any carbon containing linking group that is aliphatic, aromatic, or a combined alkyl-aryl group,
X is halogen or tertiary ammonium or an optionally substituted aryl amine.
11 . The dyestuff according to claim 10 , wherein
R 3 is optionally acetyl, propionyl, benzoyl, thioacetyl, thiopropionyl, or thiobenzoyl group, all of which may or may not bear a reactive group able to form a dye-fibre bond, and
L is benzyl or phenethyl.
12 . The dyestuff according to claim 10 , wherein
R 1 and R 2 are hydrogen or methyl,
R 3 is C 1 -C 4 alkyl, hydroxyethyl or hydroxypropyl, sulfatoethyl, phosphatoethyl, sulfatopropyl or phosphatopropyl,
R 4 is an azo based chromophoric system, and
X is chlorine, fluorine or tertiary ammonium salt.
13 . A process for preparing the dyestuff of formula (I) as claimed in 10
which comprises reacting a dyestuff of the formula (II)
wherein
R 1 is H, optionally substituted alkyl or optionally substituted aryl,
R 4 is any colored organic group, which may or may not bear a reactive group able to form a dye-fibre bond,
Y is halogen,
with an amino compound of formula (III)
where
R 1 is H, optionally substituted alkyl or optionally substituted aryl,
R 3 is optionally substituted alkyl or optionally substituted aryl, an organic acyl group or an organic thioacyl group, all of which may or may not bear a reactive group able to form a dye-fibre bond
L is any carbon containing linking group that is aliphatic, aromatic, or a combined alkyl-aryl group,
in water at a pH of about 8 to 12 followed by a further reaction with a tertiary amine or an optionally substituted aryl amine to give dyestuff according to general formula (I) where X is a tertiary ammonium or an optionally substituted aryl amine.
14 . The process according to claim 13 , wherein
R 3 is optionally acetyl, propionyl, benzoyl, thioacetyl, thiopropionyl, or thiobenzoyl group, all of which may or may not bear a reactive group able to form a dye-fibre bond, and
L is benzyl or phenethyl.
15 . A process for preparing azo dyestuffs according to the general formula (I) as claimed in claim 10
which comprises reacting an aniline derivative of the general formula (IV)
wherein
R 1 is H, optionally substituted alkyl or optionally substituted aryl,
R 3 is optionally substituted alkyl or optionally substituted aryl, an organic acyl group or an organic thioacyl group, all of which may or may not bear a reactive group able to form a dye-fibre bond,
L is any carbon containing linking group that is aliphatic, aromatic, or a combined alkyl-aryl group,
Y is halogen, and
Ar is an optionally substituted phenylene,
with sodium nitrite,
followed by a coupling onto a compound of the general formula (V)
wherein
M is H, an alkali metal, an ammonium ion or the equivalent of an alkaline earth metal and
n is an integer of 0 and 1
optionally followed by further reacting with a tertiary amine or an optionally substituted aryl amine to give dyestuff according to general formula (I) where X is a tertiary ammonium or a substituted aryl amine.
16 . A process for dyeing and printing hydroxy- and/or carboxamido-containing fibre material which comprises contacting the material with the dyestuff of the formula (I) according to claim 10 .
17 . A process for printing hydroxyl- and/or carboxamido-containing fiber material which comprises digital printing the dyestuff of the formula (I) according claim 10 to the material.
18 . A process for printing hydroxyl- and/or carboxamido-containing fibre materials which comprises ink jet printing the dyestuff of the formula (U) according claim 10 to the material.
19 . A printing ink for the inkjet process comprising one or more dyestuff of the formula (I) according to claim 10 .
20 . A hydroxy- and/or carboxamido containing fiber material which has fixed the dyestuff of the formula (I) according to claim 10 .