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US 5,599,781 AGranted
Automatic dishwashing detergent having bleach system comprising monopersulfate, cationic bleach activator and perborate or percarbonate
OwnerDonna J. Haeggberg, Lucille F. Taylor +2inventors
InventorsDonna J. Haeggberg, Lucille F. Taylor, Mark R. Sivik, James C. T. R. Burckett-St. Laurent
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Abstract
Detergents, especially automatic dishwashing detergents, comprising a stain removal system especially adapted for removal of tea stains, coffee stains and the like. The compositions comprise monopersulfate bleach such as 2KHSO.sub.5 .cndot.KHSO.sub.4 .cndot.K.sub.2 SO.sub.4 in combination with perborate or percarbonate at specific ratios, in combination with certain cationic or quaternary-substituted bleach activators.
Claims19
A detergent composition comprising:
- (a) from about 0.02% to about 2.5%, on an available oxygen basis, of one or more monopersulfate salts;
- (b) from about 0.1% to about 4% on an available oxygen basis, of one or more hydrogen peroxide releasing salts;
- and
- (c) from about 0.1% to about 10% by weight of one or more cationic bleach activators selected from the group consisting of:
- (i) monocationic bleach activator having the formula:
- ((CH.sub.3).sub.3 N.sup.+ (CH.sub.2).sub.3-8 C(O)L) (Z).sup.-
- where L is caprolactam and
- (ii) tricationic bleach activator having the formula:
- ##STR19## wherein R.sup.1 is C.sub.1 -C.sub.12 hydrocarbyl;
- any R.sup.2 is independently selected from C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 hydroxyalkyl and benzyl;
- R.sup.3 is selected from the group consisting of C.sub.1 -C.sub.10 hydrocarbyl, R.sup.5 NH, R.sup.5 NR.sup.6 and R.sup.5 O wherein R.sup.5 when present, is C.sub.1 -C.sub.10 hydrocarbyl;
- and R.sup.6, when present, is C.sub.1 -C.sub.4 hydrocarbyl;
- R.sup.4 is ##STR20## wherein n is from 1 to 4;
- and Z.sup.- is a charge-balancing water soluble nonsoap anion.
11 more elements
A compact granular nonphosphate automatic dishwashing detergent composition comprising:
- (a) from about 1% to about 4.9%, by weight, of monopersulfate salts selected from the group consisting of 2KHSO.sub.5 .cndot.KHSO.sub.4 .cndot.K.sub.2 SO.sub.4, potassium monopersulfate, sodium monopersulfate, magnesium monopersulfate, tetraalkylammonium monopersulfate, and mixtures thereof;
- (b) from about 3% to about 15%, by weight, of sodium perborate, sodium percarbonate or mixtures thereof,
- (c) from about 0.5% to about 5%, by weight, of a cationic bleach activator selected from the group consisting of:
- (i) monocationic bleach activator having the formula:
- ((CH.sub.3).sub.3 N+(CH.sub.2).sub.5 C(O)L) (Z).sup.-
- where L is caprolactam and
- (ii) tricationic bleach activator having the formula:
- ##STR22## wherein in (i) or (ii) Z.sup.- is a water soluble nonhalogen nonsoap anion;
- (d) from 0% to about 1%, by weight, of a Cobalt (III) bleach catalyst;
- (e) from about 0.01% to about 0.5% by weight of active detersive enzyme selected from proteolytic enzymes, amyolytic enzymes and mixtures thereof;
- (f) from about 0.1% to about 10% by weight of an organic dispersant polymer;
- (g) from about 5% to about 25%, by weight, of a pH adjusting agent selected from the group consisting of sodium carbonate, sodium bicarbonate, and mixtures thereof;
- (h) from about 4% to about 25%, by weight, of a water-soluble silicate selected from hydrous 2-ratio sodium silicates;
- (i) from about 1% to about 80% by weight of citrate builder;
- (j) from about 0.1% to about 2% of a chelant;
- (k) from about 0.1% to about 10% by weight of a low-foaming nonionic surfactant;
- (l) from 0% to about 3% of a carotenoid stain removal adjunct selected from the group consisting of dibenzoyl peroxide and noncharged hydrophobic bleach activators;
- and
- (m) from 0% to about 5% of one or more material care adjuncts selected from the group consisting of metasilicate, silicate, bismuth salts, manganese salts, paraffin, triazoles, pyrazoles, thiols, mercaptans, aluminum fatty acid salts, and mixtures thereof.
16 more elements
Dependencies are inferred from the claim text.