ES316869A1 - Procedure for the obtaining of basic colorants. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Procedure for obtaining basic dyes of formula ** (See formula) ** where A means the rest of a dye free of sulfonic acid groups, R1 a hydrogen atom or an alkyl radical, preferably with 1 to 4 carbon atoms, R2 a hydrogen atom or an alkyl radical, preferably with 1 to 4 carbon atoms, and direct union or a bivalent radical, Z is a component of a ring of aromatic character, which shows at least one quaternary nitrogen atom and, if appropriate, further heteroatoms, of several members, preferably of 5 or 6 members, optionally further substituted, which in In this case, further cycloaliphatic, heterocyclic or aromatic rings have condensed. n is the number 1 or 2 and anion ⊖ is an anion equivalent to the cation of the dye, characterized, because at 1 mole of a compound of formula ** (See formula) ** where B means A or the remainder of a compound suitable for the formation of a dye A are added n moles of a compound of formula ** (See formula) ** where Z1 signifies Z or a component of a ring of aromatic character showing at least one quaternizable nitrogen atom and, where appropriate, further heteroatoms, of several members, optionally subsequently substituted, to which, if necessary, further rings have been condensed cycloaliphatic, heterocyclic or aromatic, and the condensation product, when B means the rest of a compound suitable for the formation of a dye, is transformed into it and the reaction product, if necessary, is quaternized, being able to effect the quaternization and the transformation into a dye in arbitrary sequence. (Machine-translation by Google Translate, not legally binding)