Water-soluble salt of sulfonamides as colorants for the pigmenting of porous materials and for use in inkjet printing
The present invention relates to colorant of the general formula, wherein A, B and B′, m and m′ and n and n′ are as defined in the description. The colorants can be used for the pigmenting of porous materials and in injekt printing and, in the case of pigmenting, are converted to the insoluble pigme...
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| Zusammenfassung: | The present invention relates to colorant of the general formula, wherein A, B and B′, m and m′ and n and n′ are as defined in the description. The colorants can be used for the pigmenting of porous materials and in injekt printing and, in the case of pigmenting, are converted to the insoluble pigment form. In the pigmenting of porous materials, for example in the pigmenting of wood or anodised aluminium in the pores, the colorants yield very good penetration and fastness to light and, in injekt printing, yield very good water-resistance.
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