Patent ID: 6306808
Filing Date: 2001-10-23
Classification: C11D

Abstract:
A method of cleaning a hard surface, which comprises contacting the surface with a solution containing a peroxy compound and, as catalyst for the peroxy compound, a manganese complex of the formula (1) or (2) ##STR8##whereinY is linear or branched alkylene of formula --[C(R.sub.1).sub.2 ].sub.m, wherein m is an integer from 2 to 8 and each R.sub.1 is independently hydrogen or C.sub.1 -C.sub.4 alkyl; --CX.dbd.CX--, wherein X is cyano, linear or branched C.sub.1 -C.sub.8 alkyl or di(linear or branched C.sub.1 -C.sub.8 alkyl)amino; --(CH.sub.2).sub.q --NR.sub.1 --(CH.sub.2).sub.q --, wherein R.sub.1 is as defined and q is 1, 2, 3 or 4; or a 1,2-cyclohexylene or 1,2-phenylene radical of formula ##STR9##wherein R.sub.8 is hydrogen, CH.sub.2 OH, CH.sub.2 NH.sub.2 or SO.sub.3 M, wherein M is hydrogen; an alkali metal atom, ammonium or the cation of an organic amine,R.sub.5 and R.sub.6 are each independently of the other hydrogen; linear or branched C.sub.1 -C.sub.4 alkyl; linear or branched C.sub.1 -C.sub.8 alkylene-R.sub.2, wherein R.sub.2 is OR.sub.1, COOR.sub.1 or NR.sub.3 R.sub.4 ; unsubstituted aryl or aryl substituted by cyano, halogen, OR.sub.1, COOR.sub.1, nitro, linear or branched C.sub.1 -C.sub.8 alkyl, NR.sub.3 R.sub.4, wherein R.sub.3 and R.sub.4 are each independently of the other hydrogen or linear or branched C.sub.1 -C.sub.12 alkyl, or by --N.sup..sym. R.sub.1 R.sub.3 R.sub.4, wherein R.sub.1, R.sub.3 and R.sub.4 are as previously defined,each R.sub.7 independently of the others is hydrogen or C.sub.1 -C.sub.4 alkyl,Z.sub.1 and Z.sub.2 are each independently of the other hydrogen, hydroxy, C.sub.1 -C.sub.4 alkoxy or di(C.sub.1 -C.sub.4 alkyl)amino, andA is a charge-balancing anionic ligand, with the proviso that, in the compounds of the formula (1), when Y is 1,2-phenylene the substituents Z.sub.1, Z.sub.2, R.sub.5 and R.sub.6 may not all simultaneously be hydrogen.