Patent ID: 6486110
Filing Date: 2002-11-26
Classification: C07C,C07F,C11D

Abstract:
A process which inhibits the re-absorption of migrating dyes in a wash liquor, comprising introducing into a wash liquor containing a peroxide-containing detergent, from 0.5 to 150 mg, per litre of wash liquor, one or more symmetrical compounds having the formula: in which n is 1, 2 or 3; A is an anion; R1 is hydrogen or C1-C4-alkyl, Y is linear or branched alkylene of the formula â€”[C(R1)2]m in which m is an integer ranging from 1 to 8 and each R1 independently from the others has its previous significance; â€”CX&boxH;CXâ€” in which X is cyano, linear or branched C1-C8-alkyl or di(linear or branched C1-C8-alkyl-amino; â€”(CH2)qâ€”NR1â€”(CH2)qâ€” in which R1 has its previous significance and q is 1, 2, 3 or 4; or a 1,2-cyclohexylene or phenylene residue having the formula: in which R7 is hydrogen, CH2OH or CH2NH2 or SO3M, where M is hydrogen, an alkali metal atom, ammonium or a cation formed from an amine,R and Râ€² are each cyano; halogen; hydroxy; OR1 or COOR1 in which R1 has its previous significance; nitro; linear or branched partially or completely fluorinated C1-C8-alkyl; NR3R4 in which R3 and R4 are the same or different and each is hydrogen or linear or branched C1-C12-alkyl; â€”NâŠ•R1R3R4 in which R1, R3 and R4 HAVE their previous significance or linear or branched C1-C8-alkylene-R2 in which R2 is OR1, COOR1 or NR3R4, R5 and R6 are each independently from the other hydrogen; linear or branched C1-C4-alkyl; unsubstituted aryl or aryl which is substituted by cyano, halogen, OR1 or COOR1, nitro, linear or branched C1-C8-alkyl, NR3R4 in which R3 and R4 are the same or different and each is hydrogen or linear or branched C1-C12-alkyl; â€”NâŠ•R1R3R4 in which R1, R3 and R4 HAVE their previous significance or linear or branched C1-C8-alkylene-R2 in which R2 is OR1, COOR1 or NR3R4, with the proviso that each n is 1, if R and Râ€² are both C1-C4-alkyl.