Method for the production of liquid cleaning agent or detergent compositions containing at least two separate aqueous phases
A method is provided for the production of liquid cleaning agent or detergent compositions which are ready to use and packaged. In rest (quiescent) condition the compositions exist separately in at least two aqueous phases. At least two separate preliminary mixtures are produced, exhibiting non phase separation in a temperature range of about 0° C.-40° C. The preliminary mixtures are mixed together only upon or directly before they are placed in the packaging container.
1. A method of manufacturing a ready-to-use, packaged liquid cleaning or detergent composition, which separates into at least two aqueous phases in the rest condition, comprising producing at least two separate aqueous preliminary mixtures, which do not exhibit any phase separation within a temperature range of about 0° C. and 40° C., and refraining from mixing these preliminary mixtures with one another until immediately prior to or upon filling the mixtures in a packaging container.
2. The method of claim 1 , wherein the composition of each preliminary mixture is different from the composition of each of the aqueous phases which separate in the end product in the rest condition.
3. The method of claim 1 , wherein a first preliminary mixture contains, in addition to water as the main ingredient, substance(s) used in the overall composition but in the absence of which the overall composition essentially would not form separate aqueous phases, and a second preliminary mixture, the main ingredient of which is also water, contains remaining substances of the overall composition.
4. The method of claim 3 , wherein the first preliminary mixture contains a hydrophobic substance or a substance which forms a hydrophobic substance with one or more other substance of the overall composition, the other substance being selected from the group consisting of perfumes; hydrophobic, water-insoluble solvents; and, in a case where one or more quaternary ammonium salts and one or more sulfates are present, one of quaternary ammonium salts and sulfates.
5. The method of claim 4 , wherein the first preliminary mixture contains perfume(s); hydrophobic, water-insoluble solvent(s); and one of quaternary ammonium salt(s) and sulphonate(s) if both of these groups are present in the overall composition.
6. The method of claim 3 , wherein the first preliminary mixture contains one or more water-soluble substances with a low cloud point.
7. The method of claim 6 , wherein the first preliminary mixture contains a substance selected from the group consisting of quaternary ammonium salts and surface-active agents with an ethylene oxide and/or propylene oxide base.
8. The method of claim 3 , wherein the first preliminary mixture and the second preliminary mixture are present in a ratio of about 5/95 to 50/50 by volume prior to mixing.
9. The method of claim 1 , further comprising filling the packing container with at least one preliminary mixture and subsequently or substantially simultaneously filling the container with a second preliminary mixture.
10. A method of manufacturing a ready-to-use, packaged, liquid cleaning or detergent composition, which separates into at least two aqueous phases in the rest condition, the method comprising the steps of:
producing at least two separate preliminary mixtures which do not exhibit any phase separation within a temperature range of about 0° C. to 40° C.;
refraining from mixing the at least two preliminary mixtures with one another until immediately prior to or upon filling the mixtures into a packaging container; and
mixing and packaging the at least two separate preliminary mixtures to form the ready-to-use, packaged, liquid cleaning or detergent composition, wherein the at least two aqueous phases in the rest condition each have compositions which are different from the compositions of each of the at least two preliminary mixtures.