Claims
- 1. A nonaqueous liquid heavy duty detergent composition in the form of a suspension of solid, substantially insoluble particulate material comprising a peroxygen bleaching agent and an anionic surfactant component, dispersed in a liquid phase comprising a nonionic surfactant component and a nonaqueous, low-polarity organic solvent component, wherein said composition is further characterized in that it comprises:
- (a) from about 1% to 60% by weight of the composition of said nonionic surfactant component which comprises alcohol ethoxylates of the formula R.sup.1 (OC.sub.2 H.sub.4).sub.n OH wherein R.sup.1 is a C.sub.6 -C.sub.16 alkyl group and n is from about 1 to 80;
- (b) from about 10% to 40% by weight of the composition of said anionic surfactant component which comprises sulfated C.sub.8 -C.sub.20 alcohols and which is free of alkyl benzene sulfonate anionic surfactant materials;
- (c) from about 2% to 30% by weight of the composition of particles of said peroxygen bleaching agent, which particles range in size from about 0.2 to 1,000 microns;
- (d) from about 16% to 60% by weight of the composition of said nonaqueous, low-polarity organic solvent component, wherein said solvent component is selected from the group consisting of low molecular weight methyl esters of the formula R.sup.1 -C(O)--OCH.sub.3, wherein R.sup.1 ranges from 1 to 18 carbon atoms.
- 2. A composition according to claim 1 wherein
- (a) said nonionic surfactant component comprises materials selected from alcohol ethoxylates containing from about 9 to 15 carbon atoms and having from about 2 to 12 ethylene oxide moieties per molecule;
- (b) said nonaqueous low-polarity organic solvent is selected from the group consisting of methyl acetate, methyl propionate, methyl octanoate and methyl dodecanoate;
- (c) said peroxygen bleaching agent is selected from percarboxylic acids and salts thereof and alkali metal perborates and percarbonates; and
- (d) said anionic surfactant component comprises materials selected from C.sub.10 -C.sub.14 primary alkyl sulfates.
- 3. A composition according to claim 2 wherein
- (a) said nonionic surfactant component comprises from about 5% to 35% by weight of the composition
- (b) said nonaqueous, low-polarity organic solvent comprises from about 16% to 45% by weight of the composition;
- (c) said peroxygen bleaching agent particles comprises from about 2% to 20% by weight of the composition and range in particle size from about 1 to 800 microns; and
- (d) said anionic surfactant component comprises from about 15% to 30% by weight of the composition.
- 4. A composition according to claim 3 wherein
- (a) said peroxygen bleaching agent is selected from alkali metal perborates and percarbonates; and
- (b) said composition further comprises from about 2% to 10% by weight of the composition of particles of a bleach activator which can react with said peroxygen bleaching agent to form a peroxy acid, said bleach activator particles ranging in size from about 0.2 to 1,000 microns.
- 5. A composition according to claim 4 which also contains from about 1% to 20% by weight of the composition of an additional nonionic surfactant comprising ethylene oxide-propylene oxide block polymers.
- 6. A composition according to claim 4 which additionally contains from about 1% to 60% by weight of the composition of an organic detergent builder selected from alkali metal, citrates, succinates, malonates, carboxymethylsuccinates, carboxylates, polycarboxylates and polyacetylcarboxylates.
- 7. A composition according to claim 6 wherein said organic detergent builder is sodium citrate.
- 8. A composition according to claim 4 which additionally contains from about 5% to 30% by weight of an alkalinity source selected from water-soluble alkali metal carbonates, bicarbonates, borates, silicates and metasilicates.
- 9. A composition according to claim 8 wherein said alkalinity source is sodium carbonate.
- 10. A composition according to claim 6 which additionally contains from about 0.1% to 4% by weight of the composition of a chelating agent selected from amino carboxylates, amino phosphonates, polyfunctional substituted aromatic chelating agents and combinations of these chelating agents.
- 11. A composition according to claim 10 wherein said chelating agent is selected from diethylene triamine pentaacetic acid, ethylene diamine disuccinic acid and dipicolinic acid and the salts of these chelating agents.
- 12. A composition according to claim 6 which additionally contains from about 0.001% to 5% by weight of the composition of enzyme prills wherein said prills range in size from about 100 to 1,000 microns, and wherein said enzyme is selected from proteases, amylases, cellulases, and lipases.
- 13. A composition according to claim 6 which additionally contains
- (a) from about 0.1% to 4% by weight of the composition of a thickening, viscosity control and/or dispersing agent selected from acrylic acid-based polymers having a molecular weight ranging from about 2,000 to 10,000; and/or
- (b) from about 0.1% to 2% by weight of a compatible brightener, suds suppressor and/or perfume.
- 14. A nonaqueous, bleach-containing liquid heavy-duty detergent composition which comprises:
- (a) from about 8% to 25% by weight of the composition of an ethoxylated alcohol liquid nonionic surfactant which contains from 10 to 14 carbon atoms and from about 3 to 10 moles of ethylene oxide;
- (b) from about 20% to 45% by weight of the composition of a nonaqueous organic liquid solvent selected from low-molecular weight methyl esters of the formula R.sub.1 -C(O)--OCH.sub.3 wherein R.sub.1 ranges from 1 to about 18 carbon atoms.
- (c) from about 16% to 30% by weight of the composition of particles of a C.sub.10 -C.sub.14 alkyl sulfate anionic surfactant;
- (d) from about 3% to 15% by weight of the composition of particles of a peroxygen bleaching agent selected from sodium and potassium perborates and percarbonates;
- (e) from about 2% to 10% by weight of the composition of particles of a bleach activator selected from nonanoyloxybenzene sulfonate and tetraacetyl ethylene diamine;
- (f) from about 5% to 20% by weight of the composition of particles of alkali metal carbonate; and
- (g) from about 0.01% to 1% by weight of the composition of enzyme prills comprising an enzyme selected from proteases, amylases, cellulases and lipases;
- wherein said composition is free of alkyl benzene sulfonate anionic surfactants and wherein said composition is in the form of a suspension of particulate material comprising said particles and said prills, dispersed throughout said liquid nonionic surfactant and solvent components with said particulate material ranging in size from about 1 to 800 microns.
- 15. A composition according to claim 14 which also contains from about 5% to 10% by weight of the composition of an additional nonionic surfactant comprising ethylene oxide-propylene oxide bleach polymers.
- 16. A composition according to claim 14 which additionally contains from about 3% to 20% by weight of the composition of an organic detergent builder selected from alkali metal citrates.
- 17. A composition according to claim 16 which additionally contains from about 0.2% to 2% by weight of the composition of a chelating agent selected from diethylene triamine pentaacetic acid, ethylene diamine disuccinic acid and dipicolinic acid and the salts of these chelating agents.
- 18. A composition according to claim 17 which additionally contains from about 0.5% to 2% by weight of the composition of a thickening, viscosity control and/or dispersing agent selected from acrylic acid-based polymers having molecular weight of from about 2,000 to 10,000.
- 19. A composition according to claim 14 which has from about 30% to 70% by weight of the composition of a liquid phase and from about 30% to 70% by weight of the composition of a solid particulate phase.
- 20. A composition according to claim 19 which has a viscosity of from about 500 to 3,000 cps.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a file wrapper continuation of our application Ser. No. 08/313,522, now abandoned, filed Sep. 26, 1994.
US Referenced Citations (22)
Foreign Referenced Citations (1)
Number |
Date |
Country |
0 030 096 A1 |
Jun 1981 |
EPX |
Continuations (1)
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Number |
Date |
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Parent |
313522 |
Sep 1994 |
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