Dye preparations containing methine dyes

Claim 2

A process for inkjet printing comprising applying to a substrate through an inkjet a dye composition comprising, based on the weight of the composition, 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 comprising from 3 to 50% by weight, based on the weight of the dispersant, of one or more aromatic or long-chain aliphatic carboxylic acids, their salts, their anhydrides or a mixture thereof, or from 0.1 to 20% by weight of a water-soluble dispersant based on alkoxylated phenols of the formula III or IV ##STR17## where a is from 0 to, on average, 125, b is on average from 37 to 250, the ratio of b:a being at least 1:1 in the case b>37, and d is 0 or 1, or mixtures thereof and optionally water.

Claim 3

The process as claimed in claim 1, where said composition comprises from 1 to 15% by weight of one or more methine dyes, from 0.5 to 10% by weight of a dispersant and optionally water.

Claim 4

The process as claimed in claim 1, from 0.1 to 30% by weight of a carbohydrate and from 0.1 to 20% by weight of a polyalkylene glycol.

Claim 5

The process as claimed in claim 1, wherein said composition further comprises from 10 to 90% by weight of a mono- or polyhydric alcohol or mixtures thereof.

Claim 6

The process as claimed in claim 1, wherein 99% of the dye particles are smaller than 1 μm.

Claim 7

The process as claimed in claim 1, wherein said dyes include dyes of the formula Ia, Ib or Ic ##STR18## 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 1 , where R 1 is C 1 -C 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, R 2 is a radical of the benzene, indole, quinoline, aminonaphthalene, pyrrole, benzimidazole, benzthiazole, aminothiophene or diaminopyridine series, R 3 is cyano, carbamoyl, carboxyl or C 1 -C 4 -alkoxycarbonyl, R 4 is oxygen or a radical of the formula C(CN) 2 , C(CN)COOL 1 or C(COOL 1 ) 2 , where L 1 is in each case C 1 -C 8 -alkyl with or without interruption by one or two oxygen atoms in ether function, or phenyl, R 5 is hydrogen, C 1 -C 8 -alkyl with or without substitution and with or without interruption by one or two oxygen atoms in ether function, or substituted or unsubstituted phenyl, and R 6 is C 1 -C 20 -alkyl with or without substitution and with or without interruption by one to four oxygen atoms in ether function, substituted or unsubstituted phenyl, hydroxyl or a radical of the formula NL 2 L 3 , where L 2 and L 3 are independently of each other hydrogen, substituted or unsubstituted C 1 -C 12 -alkyl, C 5 -C 7 -cycloalkyl, substituted or unsubstituted phenyl, substituted or unsubstituted pyridyl, substituted or unsubstituted C 1 -C 12 -alkanoyl, C 1 -C 12 -alkoxycarbonyl, substituted or unsubstituted C 1 -C 12 -alkylsulfonyl, C 5 -C 7 -cycloalkylsulfonyl, substituted or unsubstituted phenylsulfonyl, substituted or unsubstituted pyridylsulfonyl, substituted or unsubstituted benzoyl, pyridylcarbonyl or thienylcarbonyl, or L 2 and L 3 are together with the linking nitrogen atom unsubstituted or C 1 -C 4 -alkyl-substituted succinimido, unsubstituted or C 1 -C 4 -alkyl-substituted phthalimido or a five- or six-membered saturated heterocyclic radical which optionally contains further hetero atoms.