Concentrated detergent powder compositions
AssigneeLever Brothers Company, Division of Conopco, Inc.
InventorsRudolf J. Martens, Ton Swarthoff, Marten R. P. van Vliet
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Abstract
Concentrated detergent powder compositions having a bulk density of above 600 g/l, preferably at least 610 g/l, more preferably from 650 g/l to 1200 g/l, and comprising a surfactant, a detergency builder, enzymes, a peroxygen compound bleach, and a manganese complex as effective bleach catalyst are disclosed. Specifically preferred manganese complexes are: 1) [Mn.sup.IV.sub.2 (.mu.--O).sub.3 (Me--TACN).sub.2 ](PF.sub.6).sub.2 and 2) [Mn.sup.IV.sub.2(.mu.--O).sub.3 (MeMe--TACN).sub.2 ](PF.sub.6).sub.2 Use of these catalysts can make the detergent powder more compact, i.e. reduce the pack volume, without loss of performance or even with a much better bleaching and washing powder.
Claims11
A concentrated detergent powder composition having a bulk density of above 600 g/l, comprising:
- (a) from 10 to 50% by weight, of a surface-active agent, selected from the group consisting of anionic, nonionic, cationic and amphoteric surfactants, and mixtures thereof;
- (b) from 15 to 80% by weight, of a detergency builder or builder mixture;
- (c) from 0 to 10% by weight, of an enzyme;
- (d) from 5 to 35% by weight, of a peroxygen compound, characterized in that the composition further contains from 0.0005 to 0.12% by weight, of manganese in the form of a manganese complex as bleach catalyst of the following formula:
- ##STR6## wherein Mn is manganese, which can be either in the II, III or IV oxidation state;
- X.sup.1, X.sup.2 and X.sup.3 represent a bridging species selected from O, O.sub.2, HO.sub.2, OH, ROCOO and RCOO ions and mixtures thereof, with R being H, C.sub.1 -C.sub.4 alkyl;
- z denotes the charge of the complex which can be positive or negative;
- if z is positive, Y is a counter-anion such as Cl.sup.-, Br.sup.-, I.sup.-, NO.sub.3.sup.-, ClO.sub.4.sup.-, NCS.sup.-, PF.sub.6.sup.-, RSO.sub.3.sup.- RSO.sub.4.sup.- or OAc.sup.-, wherein R can be H or C.sub.1 -C.sub.4 alkyl;
- if z is negative, Y is a counter-cation which can be an alkali metal, alkaline earth metal or (alkyl) ammonium cation;
- q=z/charge Y;
- and L is a ligand which is an organic compound selected from N, N',N"-trimethyl-triazacyclononane (Me-TACN) and its carbon-substituted derivatives having the formula:
- ##STR7## wherein R.sub.1 -R.sub.6 can each be hydrogen or a C.sub.1 -C.sub.4 alkyl group.
Dependencies are inferred from the claim text.