Compositions – Oxidative bleachant – oxidant containing – or generative – Contains activator admixed with inorganic peroxide
Patent
1997-11-17
1999-10-26
Raymond, Richard L.
Compositions
Oxidative bleachant, oxidant containing, or generative
Contains activator admixed with inorganic peroxide
2521864, 423584, 540451, 540454, 540488, 540524, 540525, 544 96, 544 97, 546188, 546189, 546207, 546208, 548230, 548524, 548551, 549266, 549291, 549292, 549295, 549320, 549322, C11D 339, A61L 218
Patent
active
059722371
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to the use of certain heterocyclic compounds based on cyclic carbamates, lactones or lactams as activators for inorganic peroxy compounds, in particular as cold bleach activators or optical brighteners in detergents, cleaners and bleaches and in disinfectants. The present invention furthermore relates to certain industrial formulations which contain these heterocyclic compounds.
2. Description of the Background
In the efforts to achieve energy-saving washing, cleaning and bleaching processes, recently use temperatures in the lower temperature range have become increasingly important, for example for textile laundering distinctly below 60.degree. C., and in particular below 45.degree. C. However, at these temperatures, the effect of the known activators for inorganic peroxy compounds, this being the system responsible for the bleaching or cleaning action, decreases markedly. There has thus been no lack of attempts to develop more effective activators for this temperature range, without any convincing success to date.
EP-A 028 432 discloses textile detergent formulations which contain, among other things, N-acyllactams, eg. N-acetylcaprolactam, as precursor for a bleaching organic peroxy acid.
SUMMARY OF THE INVENTION
It is an object of the present invention to improve the bleaching, oxidizing and cleaning action of a system comprising activator and inorganic peroxy compounds in the lower temperature range, in particular from 15 to 60.degree. C.
We have found that this object is achieved by using heterocyclic compounds of the general formula I ##STR2## (b) a lactonoxy residue of the formula ##STR3## or (c) a lactam residue of the formula ##STR4## where Z.sup.1 to Z.sup.3 are 1,2-, 1,3-, 1,4- or 1,5-alkylene groups which have 2 to 20 carbon atoms and which can additionally be functionalized by one to three hydroxyl groups, C.sub.1 -C.sub.4 -alkoxy groups, amino groups, C.sub.1 -C.sub.4 -alkylamino groups, di-C.sub.1 -C.sub.4 -alkylamino groups, chlorine atoms, bromine atoms, nitro groups, cyano groups, carboxyl groups, sulfo groups, carboxy-C.sub.1 -C.sub.4 -alkyl groups, carboxamide groups or phenyl, tolyl or benzyl radicals, it being possible for aromatic nuclei in turn likewise to be substituted by the said radicals, or can be interrupted by one or two non-adjacent oxygen atoms, amino groups, C.sub.1 -C.sub.4 -alkylamino groups or carbonyl groups, and ##STR5## where Y is hydrogen, ammonium which may be substituted by organic radicals, or C.sub.1 -C.sub.4 -alkyl, and group, a C.sub.5 -C.sub.32 -cycloalkylene group, a C.sub.7 -C.sub.30 -aralkylene group,. a C.sub.6 -C.sub.18 -arylene group or a C.sub.3 -C.sub.18 -hetarylene group, it being possible for aliphatic structural units additionally to be functionalized by one to five hydroxyl groups, C.sub.1 -C.sub.4 -alkoxy groups, amino groups, C.sub.1 -C.sub.4 -alkylamino groups, di-C.sub.1 -C.sub.4 -alkylamino groups, chlorine atoms, bromine atoms, nitro groups, cyano groups, carboxyl groups, sulfo groups, carboxy-C.sub.1 -C.sub.4 -alkyl groups, carboxamide groups or phenyl, tolyl or benzyl radicals, where aromatic, cycloaliphatic and heteroaromatic structural units can likewise be substituted by the said radicals, or to be interrupted by one to eight non-adjacent oxygen atoms, amino groups, C.sub.1 -C.sub.4 -alkylamino groups or carbonyl groups, and residue (b), of a lactam residue (c) in which the group Z.sup.3 is a 1,2-, 1,3- or 1,5-alkylene group which has 2 to 20 carbon atoms, and which can additionally be functionalized or interrupted by the radicals or atoms indicated above, and of a lactam residue (c) in which the group Z.sup.3 is a 1,4-alkylene group which has 4 to 20 carbon atoms and which can likewise additionally be functionalized or interrupted by the radicals or atoms indicated above, and in which, at the same time, the group X connected thereto is --SO--, --SO.sub.2 --, --PO(OY)--, --CO--CO-- or --CO--A--CO--, has the following meaning: -cycloalkyl, C.sub.7 -C
REFERENCES:
CA 120: 106829, 1993.
CA 121: 17822, 1993.
CA 111: 115118, 1989.
CA 98: 160816, 1982.
Boeckh Dieter
Ettl Roland
Hettche Albert
Kappes Elisabeth
Muller Reinhard
BASF - Aktiengesellschaft
Raymond Richard L.
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