A thermal transfer recording sheet includes a base material and, on the base material, a yellow-dye layer containing a yellow dye, a magenta-dye layer containing a magenta dye, and a cyan-dye layer containing a cyan dye. The yellow dye and the cyan dye contain compounds having specific structures.

The present invention relates to storage-stable dye salts, solutions and compositions thereof a process for their preparation and their use for dyeing and/or printing substrates.

A thermal transfer recording sheet includes a base material and, on the base material, a yellow-dye layer containing a yellow dye, a magenta-dye layer containing a magenta dye, and a cyan-dye layer containing a cyan dye. The yellow dye and the cyan dye contain compounds having specific structures.

To provide a yellow toner that it provides a sharper color than ever before in small amounts and the hue is greener than ever before, whereby the color range can be increased. Disclosed is a yellow toner containing a binder resin and a yellow colorant, wherein, as the yellow colorant, a compound A represented by the following general formula (1) and a compound B represented by the following formula (2) are contained, and wherein, with respect to 100 parts by mass of the binder resin, a content of the compound A is from 0.5 to 7.5 parts by mass, and a content of the compound B is from 0.5 to 8.0 parts by mass: ##STR00001##

To provide a yellow toner that it provides a sharper color than ever before in small amounts and the hue is greener than ever before, whereby the color range can be increased. Disclosed is a yellow toner containing a binder resin and a yellow colorant, wherein, as the yellow colorant, a compound A represented by the following general formula (1) and a compound B represented by the following formula (2) are contained, and wherein, with respect to 100 parts by mass of the binder resin, a content of the compound A is from 0.5 to 7.5 parts by mass, and a content of the compound B is from 0.5 to 8.0 parts by mass:

##STR00001##

An object of the present invention is to provide a thermal transfer recording sheet that enables images having a wide color gamut, a high chroma, and good lightfastness, in which the degree of catalytic fading is reduced, to be formed. The thermal transfer recording sheet includes a base material and a colorant layer on the base material. The colorant layer includes a yellow dye layer, a magenta dye layer, and a cyan dye layer. The dye layers each include, as a dye, a compound having a specific structure.

Provided is a pigment dispersion excellent in the dispersibility of C.I. Pigment yellow 185. The pigment dispersion includes C.I. Pigment yellow 185 and a compound represented by the following formula (1), which are dispersed in a dispersing medium: ##STR00001##

The present invention relates to storage-stable dye salts, solutions and compositions thereof a process for their preparation and their use for dyeing and/or printing substrates.

The invention relates to compounds of the formula (I):

##STR00001## in which R.sup.0 is C.sub.1-C.sub.6-alkyl or CF.sub.3; R.sup.1 is sulfo, carboxyl, C.sub.1-C.sub.4-alkylenesulfo, C.sub.1-C.sub.4-alkylenecarboxy, CONH.sub.2, CONH(C.sub.1-C.sub.4-alkyl) or CN, R.sup.2 is C.sub.1-C.sub.18-alkyl, C.sub.2-C.sub.18-alkenyl, hydroxy-C.sub.1-C.sub.18-alkyl, or (C.sub.1-C.sub.6-alkylene-O).sub.mR where R is defined as H, C.sub.1-C.sub.16-alkyl or hydroxy-C.sub.1-C.sub.16-alkyl and m is a number from 1 to 20, R.sup.3 is H, sulfo, carboxyl, C.sub.1-C.sub.6-alkyl or C.sub.1-C.sub.6-alkoxy, R.sup.4 is H, C.sub.1-C.sub.6-alkyl or C.sub.1-C.sub.6-alkoxy, R.sup.5 is OH, OM, C.sub.1-C.sub.6-alkyl, unsubstituted C.sub.6-C.sub.10-aryl or C.sub.1-C.sub.6-alkyl-, halogen-(e.g. F, Cl, Br), carboxyl- or sulfo-substituted where the compounds of the formula (I) contain at least one anionic radical from the group of sulfo and carboxyl having the countercation M.sup.+, where M.sup.+ is an alkali metal cation or an organic cation.

The compounds of the formula (I) are especially suitable for use in color filters.

The invention relates to a colorant composition comprising at least one compound of the formula (I) and at least one pigment, in which the compounds of the formula (I) have the following formula:

##STR00001##

in which R.sup.0 is C.sub.1-C.sub.6-alkyl or CF.sub.3; R.sup.1 is sulfo, carboxyl, C.sub.1-C.sub.4-alkylenesulfo, C.sub.1-C.sub.4-alkylenecarboxy, CONH.sub.2, CONH(C.sub.1-C.sub.4-alkyl) or CN, R.sup.2 is C.sub.1-C.sub.18-alkyl, C.sub.2-C.sub.18-alkenyl, hydroxy-C.sub.1-C.sub.18-alkyl, or (C.sub.1-C.sub.6-alkylene-O).sub.mR where R is defined as H, C.sub.1-C.sub.16-alkyl or hydroxy-C.sub.1-C.sub.16-alkyl and m is a number from 1 to 20, R.sup.3 is H, sulfo, carboxyl, C.sub.1-C.sub.6-alkyl or C.sub.1-C.sub.6-alkoxy, R.sup.4 is H, C.sub.1-C.sub.6-alkyl or C.sub.1-C.sub.6-alkoxy, R.sup.5 is OH, OM, C.sub.1-C.sub.6-alkyl, unsubstituted C.sub.6-C.sub.10-aryl or C.sub.1-C.sub.6-alkyl-, halogen- (e.g. F, Cl, Br), carboxyl- or sulfo-substituted C.sub.6-C.sub.10-aryl,
where the compounds of the formula (I) contain at least one anionic radical from the group of sulfo and carboxyl having the countercation M.sup.+, where M.sup.+ is an alkali metal cation or an organic cation.

The colorant compositions are especially suitable for use in color filters.