Process for the preparation of triazinylaminostilbene-disulphonic acid compounds

Abstract

A process for the preparation of a 4,4′-bistriazinylamino-stilbene-2,2′-disulphonic acid compound of formula (I) in which, independently, each R1 represents —NH2, —NH(C1-c10alkyl), —N(C1-C10alkyl)2, —NH(C2-C4hydroxyalkyl), —NH(C2-C4hydroxyalkyl)2, —N(C1-C10alkyl)(C2-C4hydroxyalalkyl), —NH(C1-C4alkoxy-C2-C4hydroxyalkyl), —N(C1-C4alkoxy-C2-C6hydroxyalkyl)2, —N(C1-C4alkoxy-C2-C4hydroxyalkyl)(C1-C10alkyl), —N(C1-C4alkoxy-C2C4hydroxyalkyl)(C2-C4hydroxyalkyl), —NH(C1-C4alkoxy-C1-C4alkoxy-C1-C4-alkyl), —N(C1-C4alkoxy-C1-C4alkoxy-C1-C4-alkyl)2, —N(C1-C4alkoxy-C1-C4alkoxy-C1-C4alkyl)(C1-C6alkyl), —N(C1-C6alkoxy-C1-C4alkoxy-C2-C4alkyl)(C2-C4hydroxyalkyl)-NH(C5-C7cycloalkyl), —N(C5-C7cycloalkyl)2, —NH(C6-C10aryl), NH(C7-C13aralkyl) or a morpholino, piperidino or pyrrolidino residue; M represents H, Na, Li, K, Ca, Mg, ammonium, or ammonium that is mono-, di-, tri- or tetrasubstituted by C1C4alkyl, C2-C4hydroxyalkyl or a mixture thereof, characterized by reacting a compound of the formula (II) in which R2 represents —C1-C10alkyl, which is substituted or unsubstituted, and X represents halogen, with at least 4 moles of an amine of formula R1H(3) or mixtures thereof.

Dependencies are inferred from the claim text.