FABRIC CARE METHOD

摘要

The present invention provides a process for inhibiting the re-absorption of mig rating dyes in the wash liquor, comprising introducing into a wash liquor containing a peroxide -containing detergent, from 0.5 to 150, preferably from 1.5 to 75, especially from 7.5 to 40 mg, per litre of wash liquor, of one or more compounds having the formula: (see fig. I) in which n is 1, 2 or 3; A is an anion; Y is -(CH2)m in which m is an integer ranging from 1 to 8; -(CH2)p-CH(R1)- in wh ich p is an integer ranging from 1 to 7 and R1 is linear or branched C1-C4-alkyl, preferably methyl; -CX=CX- in which X is cyano, linear or branched C1-C8-alkyl or di(linear or bran ched C1-C8-alkyl)-amino; -(CH2)q-NR1-(CH2)q- in which R1 has its previous significance and q is 1, 2, 3 o r 4; or a 1,2-cyclohexyline residue having the formula: (see fig. II); and R is cyano; halogen; hydroxy; OR1 in which R1 has its previous significance; CO2 R2 in which R2 is hydrogen or linear or branched C1-C4-alkyl; nitro; linear or branched C1-C 8-alkyl; di-(C1-C12alkyl)amino; NR3R4 in which R3 and R4 are the same or different and ea ch is linear or branched C1-C12-alkyl; or -N~R1R3R4 in which R1, R3 and R4 have their previou s significance.