Dye preparations containing methine dyes

Details Dye preparations containing methine dyes Dye preparations containing methine dyes

1999-06-02

2000-09-26

Einsmann, Margaret

Bleaching and dyeing; fluid treatment and chemical modification

Process of printing permanently on substrate, other than...

8499, 8552, 8557, 8560, 8576, D06P 530, D06P 152

Patent

active

06123740&

DESCRIPTION:

BRIEF SUMMARY
The present invention relates to novel dye preparations comprising, based on the weight of the preparation, from 0.1 to 30% by weight of one or more methine dyes, from 0.1 to 20% by weight of a dispersant based on an arylsulfonic acid-formaldehyde condensation product or from 0.1 to 20% by weight of a water-soluble dispersant based on alkoxylated phenols and optionally water, and to their use as inks in the inkjet process and for textile sublimation transfer printing.
EP-A-655 527 discloses dye preparations comprising disperse dyes and specific dispersants.
It is an object of the present invention to provide novel dye preparations comprising methine dyes, especially pyridine-based methine dyes. The novel dye preparations shall be advantageously useful for application in the inkjet process and also in textile sublimation transfer printing.
We have found that this object is achieved by the dye preparations defined at the beginning.
Suitable methine dyes are pyridine dyes in particular. These conform for example to the formula Ia, Ib or Ic ##STR1## where X is nitrogen or CH, one of the two radicals A and E is nitrogen and the other is a radical of the formula C--R.sup.1, where R.sup.1 is C.sub.1 -C.sub.20 -alkyl with or without substitution and with or without interruption by from one to four oxygen atoms in ether function, substituted or unsubstituted phenyl or hydroxyl, pyrrole, benzimidazole, benzthiazole, aminothiophene or diaminopyridine series, or C(COOL.sup.1).sub.2, where L.sup.1 is in each case C.sub.1 -C.sub.8 -alkyl, with or without interruption by one or two oxygen atoms in ether function, or phenyl, and with or without interruption by one or two oxygen atoms in ether function or substituted or unsubstituted phenyl, and or without interruption by one to four oxygen atoms in ether function, substituted or unsubstituted phenyl, hydroxyl or a radical of the formula NL.sup.2 L.sup.3, where L.sup.2 and L.sup.3 are independently of each other hydrogen, substituted or unsubstituted C.sub.1 -C.sub.12 -alkyl, C.sub.5 -C.sub.7 -cycloalkyl, substituted or unsubstituted phenyl, substituted or unsubstituted pyridyl, substituted or unsubstituted C.sub.1 -C.sub.12 -alkanoyl, C.sub.1 -C.sub.12 -alkoxy-carbonyl, substituted or unsubstituted C.sub.1 -C.sub.12 -alkylsulfonyl, C.sub.5 -C.sub.7 -cycloalkylsulfonyl, substituted or unsubstituted phenylsulfonyl, substituted or unsubstituted pyridylsulfonyl, substituted or unsubstituted benzoyl, pyridylcarbonyl or thienylcarbonyl or L.sup.2 and L.sup.3 are together with the linking nitrogen atom unsubstituted or C.sub.1 -C.sub.4 -alkyl substituted succinimido, unsubstituted or C.sub.1 -C.sub.4 -alkyl-substituted phthalimido or a five or six-membered saturated heterocyclic radical which optionally contains further hetero atoms.
Important radicals R.sup.2 are for example those of the formulae II to IIj ##STR2## where n is 0 or 1, by one or two oxygen atoms in ether function, hydroxyl, C.sub.1 -C.sub.4 -alkoxy with or without hydroxyl substitution, especially methoxy or ethoxy, formylamino, C.sub.1 -C.sub.4 -alkylsulfonylamino, mono- or di-C.sub.1 -C.sub.4 -alkylaminosulfonylamino or the radical --NHCONHQ, --NHCOQ or --NHCO.sub.2 Q, where Q is phenyl, benzyl, C.sub.1 -C.sub.4 -alkylphenyl or C.sub.1 -C.sub.8 -alkyl with or without interruption by one or two oxygen atoms in ether function, -C.sub.4 -alkoxy, especially methoxy or ethoxy, -C.sub.8 -alkyl with or without substitution and with or without interruption by one or two oxygen atoms in ether function, C.sub.3 -C.sub.4 -alkenyl, C.sub.5 -C.sub.7 -cycloalkyl, substituted or unsubstituted phenyl, or are together with the linking nitrogen atom a five- or six-membered saturated heterocyclic radical which optionally contains further hetero atoms, unsubstituted phenyl, substituted or unsubstituted benzyl, cyclohexyl, thienyl, hydroxyl, C.sub.1 -C.sub.4 -alkoxy, C.sub.1 -C.sub.4 -alkylthio or C.sub.1 -C.sub.8 -monoalkylamino, and C.sub.1 -C.sub.8 -alkoxycarbonyl or substituted or unsubstituted phenyl.
Any substituted alkyl app

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B. Smith, et al., Text. Chem. Color, vol. 19, No. 8, pp. 23-29, "Ink Jet Printing for Textiles", Aug., 1987.
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