Fabric care method

C - Chemistry – Metallurgy – 07 – F

Patent

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Details

C07F 13/00 (2006.01) C07C 251/24 (2006.01) C07C 255/61 (2006.01) C07D 455/04 (2006.01) C11D 3/00 (2006.01) C11D 3/26 (2006.01) C11D 3/39 (2006.01)

Patent

CA 2246551

The present invention provides a process for inhibiting the re-absorption of migrating 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 which 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 branched C1-C8-alkyl)-amino; -(CH2)q-NR1-(CH2)q- in which R1 has its previous significance and q is 1, 2, 3 or 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; CO2R2 in which R2 is hydrogen or linear or branched C1-C4-alkyl; nitro; linear or branched C1-C8-alkyl; di-(C1-C12alkyl)amino; NR3R4 in which R3 and R4 are the same or different and each is linear or branched C1-C12-alkyl; or -N~R1R3R4 in which R1, R3 and R4 have their previous significance.

La présente invention concerne un procédé empêchant la réabsorption de colorant migrateurs dans une liqueur de lavage, consistant à ajouter à une liqueur de lavage renfermant un détergent peroxydique, de 0,5 à 150, et préférablement de 1,5 à 75, et mieux encore de 7,5 à 40 mg par litre de liqueur de lavage, d'un ou de plusieurs composés de formule (voir fig. I), dans laquelle n est 1, 2 ou 3; A est un anion; Y est -(CH2)m où m est un entier de 1 à 8, -(CH2)p-CH(R1)-, où p est un entier de 1 à 7 et R1 un alkyle C1-C4 linéaire ou ramifié, préférablement un méthyle, -CX=CX-, où X est un cyano, un alkyle C1-C8 linéaire ou ramifié ou un di(alkyle C1-C8 linéaire ou ramifié)amino, -(CH2)q-NR1-(CH2)q-, où R1 a la signification ci-dessus et q est 1, 2, 3 ou 4, ou un radical de 1,2-cyclohexyline de formule (voir fig. II); R est un cyano, un halogène, un hydroxy, OR1, où R1 a la signification ci-dessus, CO2R2, où R2 est de l'hydrogène ou un alkyle C1-C4 linéaire ou ramifié, un nitro, un alkyle C1-C8 linéaire ou ramifié, un di(alkyle C1-C12)amino, NR3R4, où R3 et R4 sont identiques ou différents, chacun étant un alkyle C1-C12 linéaire ou ramifié, ou -N~R1R3R4, où R1, R3 et R4 ont la signification ci-dessus.

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