Process for improving the color yield and fastness properties of dyeings produced with anionic dyes on cellulose fibre material and cationic fibre- reactive compounds

摘要

A process for improving the color yield and the wetfastness properties of dyeings produced on cellulose fibre material with anionic dyes, which process comprises treating the cellulose material before, during or after dyeing, with a cationic fibre-reactive compound of the formula ##STR1## wherein B represents a mono- or polynuclear heterocyclic radical,P PHal represents a reactive halogen atom, PP X represents halogen, lower alkoxy, lower alkylthio, phenoxy, phenylthio, ##STR2## or the group of the formula ##STR3## each of W.sub.1 and W.sub.2 independently represents the direct bond, ##STR4## Z represents hydrogen, lower alkyl or hydroxy-lower alkyl, each of Q.sub. 1 and Q.sub.2 independently represents an aliphatic or cycloaliphatic radical,P Peach ofPPR.sub.1, R.sub.2, V. sub.1, V.sub.2, Y. sub.1 and Y.sub.2 independently represents lower alkyl, or lower alkyl or benzyl each of which is substituted by halogen, hydroxy or cyano, or each of the pair of substituents R.sub.1 and R.sub.2 and Y.sub.1 and Y. sub.2 together with the nitrogen atom to which it is attached independently represents a 5- or 6-membered heterocyclic ring, or each ofP PR.sub.1, R.sub.2 and V.sub.1 and Y.sub.1, Y. sub.2 and V.sub.2 together with the nitrogen atom to which it is attached independently represents a pyridine ring, or, if W.sub.1 and W.sub.2 are ##STR5## each of Z and V. sub.1 and Z and V.sub.2 together with the group N--Q.sub. 1 --N or N--Q.sub.2 --N independently also represents a divalent heterocyclic radical,PPAn ⊖ represents the anion of an organic or inorganic acid, and n is 1 or 2, P Pwith the proviso that an optional aftertreatment of the cellulose material is carried out according to a padding process.