COMPOSITION FOR DETERGENT FOR CLEANING

Abstract

The invention is related to a precursor for making a detergent and a detergent comprising •water; •an alkyl sulfate; •a fatty acid alkanolamide and/or a fatty acid amidoamine; wherein the fatty acid alkanolamide corresponds to the formula (I) and wherein the fatty acid amidoamine corresponds to the formula (II)

##STR00001##

Claims

1. A precursor for making a detergent wherein the precursor comprises: water having a concentration of between 16 wt % and 44 wt % based on the total weight of the precursor; an alkyl sulfate having a concentration of between 25 wt % and 45 wt % based on the total weight of the precursor; and a fatty acid alkanolamide and/or a fatty acid amidoamine; wherein the precursor is in a lamellar phase, and is able to form a ringing gel after addition of extra water and one or more non-polar compounds; wherein the fatty acid alkanolamide corresponds to the formula ##STR00008## wherein R1 is an alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl having 6 to 22 carbon atoms, R2 is a hydroxyalkylgroup containing 2 to 6 carbon atoms, and R3 is hydrogen or an alkyl group or has the same meaning as R2; and wherein the fatty acid amidoamine corresponds to the formula ##STR00009## wherein: R4 is alkyl, alkenyl, hydroxyalkyl or hydroxyalkenyl containing 6 to 22 carbon atoms; R5 is hydrogen, an alkyl group, or a hydroxyalkylgroup containing 2 to 4 carbon atoms; R6 is an alkyl group containing 2 to 4 carbon atoms; and R7 and R8 are each independently hydrogen, an alkyl group, or a hydroxyalkyl group containing 2 to 4 carbon atoms.

2. The precursor according to claim 1, wherein the precursor is able to form a ringing gel after addition of extra water and one or more non-polar compounds that is able to adhere to a sanitary object.

3. The precursor according to claim 1, wherein the precursor has a set point that is lower than 25° C. and which precursor is pourable at temperatures of between 5 to 10° C. more than the set point.

4. The precursor according to claim 1, wherein the relative ratio of the amount of alkyl sulfate and the fatty acid amidoamine and/or the fatty acid alkanolamide is between 40/60 and 60/40.

5. The precursor according to claim 1, wherein the fatty acid alkanolamide is selected from the group consisting of cocamide MIPA, cocamide MEA, cocamide DEA, Cocamide methyl MEA, Lauramide MEA, Lauramide DEA, Lauramide MIPA, Myristamide MEA, Myristamide DEA, Myristamide MIPA, Stearamide MEA, Stearamide DEA, Stearamide MIPA, Hydroxystearamide MEA, Isostearamide DEA, N-Tris(hydroxymethyl) methyl lauramide, Oleamide MEA, Oleamide DEA, Oleamide MIPA, Soyamide MEA, Soyamide DEA, Soyamide MIPA, Behenamide MEA, Behenamide DEA, Palmitamide MEA, Palmitamide DEA, Ricinoleamide MEA, Ricinoleamide DEA, Ricinoleamide MIPA, Tallowamide MEA, Tallowamide DEA, Undecylenamide MEA, Undecylenamide DEA, N-Lauroyl-N-methylglucamide, N-Cocoyl-N-methylglucamide or a mixture thereof.

6. The precursor according to claim 1, wherein the fatty acid amidoamine is Stearamidopropyl Dimethylamine, Cocamidopropyl dimethylamine, Lauryl Myristyl amidopropyl dimethylamine, Stearamidoethyl diethylamine, Isostearamidopropyl dimethylamine, Lauramidopropyl dimethylamine, Myristamidopropyl dimethylamine, Soyamidopropyl dimethylamine, Oleamidopropyl dimethylamine, Palmitamidopropyl dimethylamine, Ricinoleamidopropyl dimethylamine, Tallowamidopropyl dimethylamine, Behenamidopropyl dimethylamine or a mixture thereof.

7. The precursor according to claim 1, wherein the concentration of the fatty acid alkanolamide and/or the fatty acid amidoamine is between 25 wt % and 45 wt % based on the total weight of the precursor.

8. The precursor according to claim 1, wherein the alkyl sulfate comprises an alkyl group containing 6 to 22 carbon atoms and/or where the alkyl sulfate is a metallic alkyl sulfate, ammonium or an amine derivative of an alkyl sulfate.

9. A detergent for cleaning and/or disinfecting and/or deodorizing comprising: the precursor according to claim 1, extra water so that the concentration of the total amount of water in the detergent is between 35 and 70 wt % based on the total weight of the detergent, and one or more non-polar compounds and/or a perfume, wherein the product is a hard ringing gel that has a gel point that is higher than 40° C.

10. The detergent according to claim 9 that is able to adhere to a sanitary object after application.

11. The detergent according to claim 9, wherein the total water content is between 35 and 70 wt % based on the total weight of the detergent.

12. The detergent according to claim 9, wherein the fatty acid alkanolamide and/or the fatty acid amidoamine has a content of between 8 and 20 wt % based on the total weight of the detergent.

13. The detergent according to claim 9, wherein the content of the alkyl sulfate is between 5 and 20 wt % based on the total weight of the detergent.

14. The detergent according to claim 9, wherein the content of the one or more non-polar compounds is between 3 and 30 wt % based on the total weight of the detergent.

15. The detergent according to claim 9, further comprising a hydrotrope, wherein the hydrotrope has a content from 0 to 16 wt % based on the total weight of the detergent.

16. The detergent according to claim 9, wherein the relative ratio of the amount of alkyl sulfate and the fatty acid amidoamine and/or the fatty acid alkanolamide is between 40/60 and 60/40.

17. The detergent according to claim 9, wherein the one or more non-polar compounds are selected from the group consisting of hydrocarbon oils, alkylcarbonates, synthetic and vegetable oils, essential oils, oily esters, silicon oils, perfumes or combination thereof.

18. The detergent according to claim 9, further comprising a pH modifier, a pH buffer, a structuring agent, a solubility controller, a preservative, a complexing agent, a biocide, a lime scale remover, a bleaching agent, enzymes, a polymer and/or a dye.

19. A method for producing a detergent comprising: heating water to a temperature of 70-80° C.; optionally adding a hydrotrope adding a precursor according to claim 1 to obtain a viscous liquid mixture; optionally adding a perfume; optionally adding a gel point modifier, a solubility controller, a pH modifier, a pH buffer, a structuring agent, a preservative, a complexing agent, a biocide, a lime scale remover, a bleaching agent, enzymes, a polymer and/or a dye; adding one or more non-polar compounds; and cooling the obtained mixture to room temperature to obtain a hard ringing gel detergent.

20. (canceled)

Description

[0110] The invention is further being explained by the following figures and examples that are non-limiting for the purpose of the invention.

[0111] FIG. 1 is a diagram showing the results of a rheological oscillation method using a temperature ramp for gel point determination of a detergent (example A).

[0112] FIG. 2 is a diagram showing the results of a rheological shear rate versus temperature ramp for a gel thaw point determination of a precursor (Precursor A—EMPICOL® iDS T10).

[0113] FIG. 3 is a Small angle X-ray scattering (SAXS) diagram of Precursor A (EMPICOL® iDS T10) showing that the precursor is in the lamellar phase. d[A] is the d-spacing of the scatter.

[0114] FIG. 4 is a Small angle X-ray scattering (SAXS) diagram of the ringing gel of Example A showing that the gel is in the cubic phase. The center of the primary beam is #204; The channel width at 1024 is 54.0 μm; the sample to detector distance is 276 mm, the wavelength is 1.542 Å; the lattice spacing is 278.59 Å.

[0115] FIG. 5 is a picture of an apparatus for the determination of the solubility of the detergent which is in this case a sanitary product (Wet Slide Test).

EXAMPLES

1. Preparation and Appearances of the Precursor

[0116] Several precursors are made and comprise the ingredients as shown in Table 1. The precursors are made by first heating water to a temperature of between 70 and 80° C., then adding sodium cumene sulfonate (only for precursor I), then adding the fatty acid alkanolamide and/or the fatty acid amidoamine. In the case that the fatty acid alkanolamide and/or the fatty acid amidoamine are solid, they can be added as such or first melted. After that the anionic surfactant sodium C12-C18 sulfate or ammonium C12-C16 sulfate are added and is dissolved in the mixture. The mixture is homogenized and cooled down until room temperature.

[0117] For each precursor the set point is determined using HAAKE Rheo Stress 1 rheometer with Peltier thermostat, using the rotational mode at shear stress of 40 Pa and where the temperature range is set at −5 to +60° C., using a Cone/Plate of C35/1°. Table 1 shows the results of the set points. Table 1 also describes the appearance of the precursors at room temperature.

[0118] All the precursors that form a fluid paste are in the lamellar phase. FIG. 2 shows the Small angle X-ray scattering (SAXS) diagram of Precursor, after a count time of 600 seconds, at 10, 20, 30, 60 and 80° C. showing that the precursor is in the lamellar phase.

TABLE-US-00001 TABLE 1 Precursor examples showing the ingredients and characterization. The products are all from Huntsman. EMPICOL ® iDS T10- Product Active Precursor Precursor Precursor Precursor Precursor Precursor name Ingredient A (w/w %) B (w/w %) C (w/w %) D (w/w %) E (w/w %) F (w/w %) Water Water To 100 To 100 To 100 To 100 To 100 To 100 EMPICOL ® Sodium C12-16 50 60 40 50 — — LXN 70 Sulfate EMPICOL ® Sodium C12-18 — — — — 36.66 — 0775/P Sulfate (higher C18) EMPICOL ® Sodium C12 — — — — — 37 0045/B Sulfate EMPICOL ® Sodium C12-18 — — — — — — LZB 70 Sulfate (Lower C18) EMPICOL ® Ammonium C12-16 — — — — — — AL 70 Sulfate EMPILAN ® Cocamide MIPA 35 28 42 — 35   35 CIS EMPIGEN ® Stearamidopropyl — — — 35 — — S 18 dimethylamine EMPIGEN ® Cocamidopropyl — — — — — — AS/F90 Dimethylamine ELTESOL ® Sodium Cumene — — — — — — SC 40 Sulfonate Precursor characterisation Appearance at RT (25° C.) Fluid Fluid Fluid White White Fluid Paste Paste Paste Hard Hard Paste Paste Paste * Set Point at 40Pa ca. ca. ca. ca. ca. ca. (Rheometer) +10° C. +15° C. +13° C. +57° C. +20° C. +14° C. EMPICOL ® EMPICOL ® EMPICOL ® EMPICOL ® iDS T20- iDS T30- iDS T40- iDS T50- Product Active Precursor Precursor Precursor Precursor name Ingredient G (w/w %) H (w/w %) I (w/w %) L (w/w %) Water Water To 100 To 100 — To 100 EMPICOL ® Sodium C12-16 — — 50 50 LXN 70 Sulfate EMPICOL ® Sodium C12-18 — — — — 0775/P Sulfate (higher C18) EMPICOL ® Sodium C12 — — — — 0045/B Sulfate EMPICOL ® Sodium C12-18 50 — — — LZB 70 Sulfate (Lower C18) EMPICOL ® Ammonium C12-16 — 50 — — AL 70 Sulfate EMPILAN ® Cocamide MIPA 35 35 35 — CIS EMPIGEN ® Stearamidopropyl — — — — S 18 dimethylamine EMPIGEN ® Cocamidopropyl — — — 39 AS/F90 Dimethylamine ELTESOL ® Sodium Cumene — — 15 — SC 40 Sulfonate Precursor characterisation Appearance at RT (25° C.) Fluid Fluid Fluid Fluid Paste Paste Paste Paste Set Point at 40Pa ca. +3/15° C. ca. ca 6° C. (Rheometer) +13° C. 20° C. *Precursor E is a fluid paste at 30° C. EMPICOL ® LXN 70, LZB 70 are sodium alkyl sulfate at 70%. EMPICOL ® AL 70 is an ammonium alkyl sulfate at ca 70%. EMPICOL ® 0775/P is a sodium alkyl sulfate at ca 95%. EMPICOL ® 0045/B is sodium C12 Sulfate at ca 94%. EMPILAN ® CIS is Cocamide MIPA at ca 95%. EMPIGEN ® S 18 is a stearamidopropyl dimethylamine at ca 100%. EMPIGEN ® AS/F90 is Cocamidopropyl dimethylamine at ca 90%. ELTESOL ® SC 40 is a sodium cumene sulfonate at ca 40%.

2. Preparation of Ringing Gels

[0119] Several detergents are made from the precursors and comprise the formulations as described in Table 2. The detergents are made by heating water to a temperature of 70-80° C. To the water is sodium cumene sulfonate (SCS) added, except for example I, because there the SCS is already in the precursor (see precursor I table 1), and except for Q where no SCS is added. Then the precursor from table 1 is added to the water. The letters from the precursor in Table 1 correspond with the detergents (sanitary products) in Table 2 (note that the precursor for M, N, O, P and Q are not mentioned in Table 1). By adding the precursor, a viscous mixture is obtained. To this mixture, perfume is added. Also quantum satis (q.s.) of the preservative or dye can be added. Then the non-polar compound is added to viscous mixture and cooled down to room temperature. A ringing gel is obtained, can stick to a sanitary object.

[0120] Of all the examples the gel point has been determined using the HAAKE Rheo Stress 1 rheometer with Peltier thermostat using the Oscillation Temperature Ramp at a frequency of 1 Hz, and a temperature ramp of 10-80° C. using a strain of 0.5% using a cone/plate system having an incline of 1° and a diameter of 35 mm. FIG. 1 shows the diagram of rheological measurements of Example A.

[0121] Table 3 shows formulations using the ingredients of a detergent (sanitary product) at different concentrations. Only when a ringing gel is formed, a sanitary product is obtained that is able to stick to a sanitary object. Examples 1, 2, 8, 4, 9, 13, 16, 18 and 19 are comparative examples. Examples A, 3, 10, 11, 12, 14, 15 and 17 are examples according to the invention.

TABLE-US-00002 TABLE 2 Ringing gels with different formulations Example Example Example Example Example Example Example Example Ingredients A wt % B wt % C wt % D wt % E wt % F wt % G wt % H wt % Water To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 Sodium lauryl 14.04 15.63 12.9  14.19 14.64 13.33 14.58  13.27  sulfate TEA Lauryl Sulfate — — — — — — — — Cocamide MIPA 13.34 14.85 12.25  13.48 13.9  12.66 13.85  12.6  Sodium Cumene  4.07 6.6 8.45  7.97  8.42  2.21 9.15 10.64  Sulfonate Polyhydroxystearic — — — — — — 0.88 — acid Stearamidopropyl — — — — — — — 0.87 Dimethylamine Cocamidopropyl — — — — — — — — dimethylamine White mineral oil.sup.a 13.96 12.23 — — 10.88 — 7.91 7.79 2-ethylhexyl — — — — — 15.11 — — carbonate Polydecene — — —  9.51 — — — — hydrogenated Isoparaffin — — 10.5  — — — — — Perfume  4.62  4.21 4.44 4.7  4.66  4.84 3.94 3.63 Urea — — — — — — — — Preservative/dye q.s. q.s. q.s. q.s. q.s. q.s. q.s. q.s. Appearance at Ringing Ringing Ringing Ringing Ringing Ringing Ringing Ringing 25° C. Gel Gel Gel Gel Gel Gel Gel Gel Gel Point (° C.) ca 62 ca 55 ca 54 ca 56 ca 51 ca 50 ca 41 ca 43 Example Example Example Example Example Example Example Ingredients I wt % L wt % M wt % N wt % O wt % P wt % Q wt % Water To 100 To 100 To 100 To 100 To 100 To 100 To 100 Sodium lauryl 14.13 14.38 14.48  14.53 14.03 14.03 — sulfate TEA Lauryl Sulfate — — — — — — 13.25 Cocamide MIPA 13.42 13.66 13.75  13.8  — — 13.96 Sodium Cumene 10.2   8.95 9.52  3.18  4.07  4.07 — Sulfonate Polyhydroxystearic — — — — — — — acid Stearamidopropyl — — — — — 14.04 — Dimethylamine Cocamidopropyl — — — — 14.04 — — dimethylamine White mineral oil.sup.a  9.95 9.4 9.83 14.52 13.96 13.96 12.4  2-ethylhexyl — — — — — — — carbonate Polydecene — — — — — — — hydrogenated Isoparaffin — — — — — — — Perfume 4.9 4.5 4.71  5.07  4.62  4.62 5   Urea — — — — — — 1   Preservative/dye q.s. q.s. q.s. q.s. q.s. q.s. q.s. Appearance at Ringing Ringing Ringing Ringing Ringing Ringing Ringing 25° C. Gel Gel Gel Gel Gel Gel Gel Gel Point (° C.) ca 47 ca 45 ca 53 ca 65 ca 47 ca 55 ca 50° C. .sup.aSeveral grades with different physical properties

TABLE-US-00003 TABLE 3 Formulations for making detergents (sanitary products) having different concentrations. Exam- Ingredients 1 ple A 2 8 3 4 9 10 11 12 13 Water To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 To 100 Sodium lauryl 14 14 14 5 8 20 14 14 14 14 14 sulfate Cocamide MIPA 8 13.3 20 14 14 14 14 14 14 14 14 Sodium 4.07 4.07 4.07 4.07 4.07 4.07 4.07 4.07 4.07 4.07 4.07 Cumene Sulfonate White mineral 13.96 13.96 13.96 13.96 13.96 13.96 5 20 22 24 25.9 oil.sup.a Perfume 4.62 4.62 4.62 4.62 4.62 4.62 4.62 4.62 4.62 4.62 4.62 Appearance at Separated: Ringing Gel Clear Ringing Hard Hazy Gel Ringing Ringing Ringing Not 25° C. Two Layers Gel Not Liquid Gel Paste Not Gel Gel Gel Processable Ringing Not Ringing Processable Gel Point (° C.) — ca 62 — — Ca — — ca 58° C. ca 60° C. ca 71° C. — 42° C. Ingredients 16 14 15 17 18 19 Water To 100 To 100 To 100 To 100 To 100 0 Sodium lauryl 14 14 14 14 14 14 sulfate Cocamide MIPA 14 14 14 14 14 14 Sodium Cumene 0 2 6 8 12 15.75 Sulfonate White mineral 13.96 13.96 13.96 13.96 13.96 13.96 oil.sup.a Perfume 4.62 4.62 4.62 4.62 4.62 4.62 Appearance at Not Ringing Gel Ringing Gel Ringing Gel Ringing Gel prone Separated Gel 25° C. Processable to separation Gel Point (° C.) — ca 61° C. ca 60° C. ca 53° C. ca 30° C. — .sup.aSeveral grades with different physical properties

[0122] Table 4 shows the performance of the ringing gels from example A and E and shows that 10 grams of ringing gel can have up to 90 flushes before it is completely dissolved in water.

[0123] Further the ringing gels were tested on a wet slide test apparatus, which is a testing device (see FIG. 5) used for comparing the solubility of ringing gels with different composition.

[0124] The test is carried out by applying the ringing gels (extruded in disc or sticker shape) on a tiled surface of the testing device at about 2 cm from the rim and measuring the time taken for the water (tap water at 15° C.) to consume them completely with a continuous flow (600 liter/hour).

TABLE-US-00004 TABLE 4 Performances of detergents (sanitary products). Properties Example A Example E Appearance at 25° C. Ringing Gel Ringing Gel Gel Point (° C.) 62 51 No Flushes.sup.a 50-90 40-65 (Sticker) Wet Slide Test 11  9 with Stickers (min) .sup.aNumbers collected from the results obtained by a number of panelists.

3. Ratio of Alkyl Sulfate and Amide Determines the Type of Ringing Gel

[0125] The inventors found that the ratio of the alkyl sulfate and the fatty acid amidoamine or fatty acid alkanolamide in the detergents determines if a clear ringing gel is formed or a cloudy or hazy ringing gel that is not homogeneous. As is shown in Table 5, the ratio of the weight percent of the alkyl sulfate (Sodium lauryl sulphate or SLS) and the fatty acid alkanolamide (Cocamide MIPA or CMIPA) in the detergent is preferably 45:55 or 50:50. Other ratios provide ringing gels that are not clear, slightly hazy or cloudy. These ringing gels are not homogeneous and provide birefringence when analyzed under a polarized microscopy.

TABLE-US-00005 TABLE 5 Phase change depending on the ratio SLS and CMIPA in the formulation of the detergent. SLS:CMIPA SLS:CMIPA SLS:CMIPA (Example A) SLS:CMIPA SAXS Cubic Cubic Cubic Cubic Identification RATIO 40:60 45:55 50:50 55:45 Appearance Slightly Clear Clear Cloudy @ room Hazy Ringing Ringing Ringing temperature Ringing Gel Gel Gel Not Gel homogeneous Gel Point 50° C. 56° C. 62° C. 77° C. (via Rheometer) Polarized Mixed No No Mixed Microscopy Phases Birefrin- Birefrin- Phases gence gence

4. The Water Content in the Formulation of the Detergent

[0126] Table 6 shows appearances at room temperature and phase identifications of formulations comprising Precursor A (Sodium lauryl sulfate, Cocamide MIPA and water), White Mineral Oil, Perfume and Sodium Cumene Sulfonate and different total amounts of water content.

[0127] The formulations comprise the following stock formulation, which has not intentionally added water, and additional water as shown in table 6. The stock formulation comprises: [0128] Precursor A—EMPICOL® iDS T10 (Sodium Lauryl Sulfate, Cocamide MIPA and water): 40.2 g; [0129] Non-polar Phase (White Mineral Oil, Perfume): 18.58 g; and [0130] ELTESOL® SC 40 (Sodium Cumene Sulfonate 40% in water): 10.17 g

[0131] In case that Cocamide MIPA and SLS are used as fatty acid alkanolamide and alkyl sulfate, the water content can vary between 40.6 and 60.2 wt % so that a ringing gel in cubic phase can be formed. A person skilled in the art will realize that a variation in water content can occur depending on the type of alkyl sulfate and/or fatty acid alkanolamide and/or fatty acid amidoamine that is used.

TABLE-US-00006 TABLE 6 Phase change depending on the water content in the detergent. Water Added to the Stock Total Water Appearance at Phase Formulation (g) Content (%) room temperature Identification — 30 (Precursor A) Fluid Paste Lamellar (Lα) — 18.2 (Stock Fluid Paste Lamellar (Lα) Formulation) 5 24.9 Hard Paste Lamellar to Hexagonal 10 30.8 Hard Paste Lamellar to Hexagonal 15 36   Hard Paste Lamellar to Hexagonal 20 40.6 Gel Hexagonal 25 44.8 Ringing Gel Cubic 31 49.3 (Example A) Ringing Gel Cubic 35 51.8 Ringing Gel Cubic 40 54.9 Ringing Gel Cubic 45 57.8 Ringing Gel Cubic 50 60.2 Gel Cubic to Liquid 60 64.7 Two phases liquid Liquid