POWDER/GRANULES FOR MAKING A SHOWER GEL OR SHAMPOO

Abstract

The invention relates to a powder/granular material for producing a shower gel or shampoo, which contains a salt of a mono-C.sub.8-18-alkyl sulfate, in particular a salt of coco sulfate or lauryl sulfate, and an ammonium salt. The invention furthermore also relates to the use of the powder/granular material according to the invention for producing a shower gel or shampoo. The invention moreover relates to a shower gel/shampoo, which contains a salt of a mono-C.sub.8-18-alkyl sulfate, in particular a salt of coco sulfate or lauryl sulfate, an ammonium salt and water, characterized in that a further cosurfactant is present at most in a quantity by weight of less than half the quantity by weight of the salt of a mono-C.sub.8-18-alkyl sulfate.

Claims

1. A powder or granular material for producing a shower gel or shampoo, which contains a salt of a mono-C.sub.8-18-alkyl sulfate and an ammonium salt.

2. The powder or granular material according to claim 1, in which the salt of the mono-C.sub.8-18-alkyl sulfate is ammonium mono-C.sub.8-18-alkyl sulfate or an alkali mono-C.sub.8-18-alkyl sulfate.

3. The powder or granular material according to claim 1, in which the mono-C.sub.8-18-alkyl sulfate is a mono-C.sub.12-18-alkyl sulfate .

4. The powder or granular material according to claim 1, in which the ammonium salt is an ammonium halide.

5. The powder or granular material according to claim 1, which contains 40 wt.-% to 90 wt.-% of the salt of a mono-C.sub.8-18-alkyl sulfate, relative to the total weight of the powder/granular material.

6. The powder or granular material according to claim 1, which contains 10 wt.-% to 40 wt.-% of the ammonium salt, relative to the total weight of the powder/granular material.

7. The powder or granular material according to claim 1, which contains a molar excess of ammonium ions relative to mono-C.sub.8-18-alkyl sulfate ions, comprising a molar excess ina range of from 20 to 1 to 1.1 to 1, or from 10 to 1 to 1.3 to 1, or from 5 to 1 to 1.5 to 1.

8. The powder or granular material according to claim 1, which contains a further cosurfactant at most in a quantity by weight of less than half the quantity by weight of the salt of a mono-C.sub.8-18-alkyl sulfate.

9. The powder or granular material according to claim 1, which does not contain a further liquid cosurfactant.

10. Use of a the powder or granular material according to claim 1 for producing a shower gel or shampoo.

11. Use of the powder or granular material according to claim 10, in which the powder or granular material is mixed with water.

12. A shower gel or shampoo, which contains a salt of a mono-C.sub.8-18-alkyl sulfate an ammonium salt and water, wherein a further cosurfactant is present at most in a quantity by weight of less than half the quantity by weight of the salt of a mono-C.sub.8-18-alkyl sulfate.

13. The shower gel or shampoo according to claim 12, wherein the shower gel or shampoo excludes a further cosurfactant.

14. The shower gel or shampoo according to claim 12, obtained by mixing a powder or granular material, which contains a salt of a mono-C.sub.8-18-alkyl sulfate and an ammonium salt, with water.

Description

[0037] The present invention will now be explained with reference to the following examples:

EXAMPLE 1: PREPARATION OF A GRANULAR MATERIAL OR SHOWER GEL/SHAMPOO ACCORDING TO THE INVENTION

[0038] According to Table 1 below, a granular material according to the invention with the constituents specified therein was prepared. Furthermore, 12 g of the granular material was mixed with 88 g tap water (25° C.) to form a shampoo/shower gel. After complete dissolution, a clear mixture formed which remained unchanged for 3 months in a temperature window in the range of from 5° C. to 40° C. At temperatures around 5° C., crystals temporarily formed, which could be easily dissolved again when the temperature was increased by 10° C. to 15° C., however.

TABLE-US-00001 Constituent Name Name Granular material (proportions of the constituents) Shampoo/ shower gel (proportions of the constituents) [wt.-%] [wt.-%] Solvent WATER DEMIN. 88 Surfactant anionic SODIUM COCO SULFATE MB Sulfopon 1216G; BASF 65.84 7.90 Auxiliary material AMMONIUM CHLORIDE Chemsolte 2668; TH Geyer 20.83 2.50 Organic carboxylic acid CITRIC ACID DAB (GRIES) Citric acid DAB (Gries); Brenntag GmbH 7.5 0.90 Preservative SODIUM BENZOATE Sodium benzoate Prills 25; RFI Food Ingredients 1.67 0.20 Preservative POTASSIUM SORBATE Potassium sorbate ZTN; Ter Hell 0.83 0.10 Perfume oil PO BLUE CARE 9070211 Perfume Blue Care; Robertet S.A. 3.33 0.40

COMPARISON EXAMPLES 1 TO 4 WITH ALKALI CHLORIDES INSTEAD OF AMMONIUM CHLORIDE

[0039] Instead of the quantity of ammonium chloride specified in Table 1, in each case NaCl (comparison example 1), KCI (comparison example 2), CaCl2 (comparison example 3) and MgCl2 (comparison example 4) were used here. After dissolution in demineralized water, analogously to Example 1 according to the invention, it was possible in the case of NaCl, KCI and MgCl.sub.2 to obtain initially clear shower gels/shampoos in each case, in which, however, after one to two days a turbidity due to precipitation of the sodium coco sulfate was observed. In the case of CaCl.sub.2, it was not possible to obtain a clear product through the addition of water from the start.

COMPARISON EXAMPLES 5 AND 6 WITH OTHER SURFACTANTS INSTEAD OF SODIUM COCO SULFATE:

[0040] In further comparison tests, instead of the quantity of sodium coco sulfate specified in Table 1, in each case sodium cocoyl isethionate (comparison example 5) or sodium lauryl sulfoacetate (comparison example 6) was used. The granular material obtained was very poorly soluble in water in both cases and did not result in a clear product.

COMPARISON EXAMPLE 7

[0041] When ammonium coco sulfate was used without a further ammonium salt, the granular material obtained was likewise very poorly soluble in water and did not result in a clear product.

COMPARISON EXAMPLE 8: POWDER/GRANULAR MATERIAL WITH XANTHAN AS AUXILIARY MATERIAL/STABILIZER INSTEAD OF AMMONIUM SALT:

[0042] Here, a powder/granular material with the following ingredients was provided: sodium coco sulfate, xanthan, Theobroma cacao seed butter, citric acid, potassium sorbate, silica gel, sodium benzoate, Butyrospermum parkii butter, Aloe barbadensis leaf juice, Camellia sinensis leaf powder, Cl 75100, Gardenia jasminoides fruit extract, maltodextrin, limonene, benzyl salicylate, eugenol, perfume

COMPARISON EXAMPLE 9 STANDARD SHAMPOO

[0043] The standard shampoo has the following composition:

TABLE-US-00002 Data in percent by weight WATER DEMIN. 78.0899475 ETHER SULFATE MB 10.8 Cocamidopropyl betaine 5.0 GLYCEROL 99.5% 2.0 DEAD SEA SALT 1.5 LAMESOFT PO 65 MB 1.0 WHITE TEA EXTR A KBA 0485621 0.1 OLIVE LEAF EXTR GLY 0487304 0.01 PO WHITE TEA & MAGNOLIA 68404 0.5 SODIUM BENZOATE 0.4 POTASSIUM SORBATE 0.2 CITRIC ACID DAB (GRIT) 0.4 TABLE SALT COARSE (BRINE) 0.0000025 FD & C BLUE NO.1, C.I.42090 100301 0.00005

[0044] To produce a shampoo/shower gel, 20 g of the powder is rapidly added to 240 ml tepid water and immediately shaken vigorously 10 times. It is then left to stand for 15 minutes and shaken vigorously once again.

INVESTIGATIONS OF VARIOUS PROPERTIES OF THE COMPOSITIONS OF EXAMPLE 1 AND COMPARISON EXAMPLES 8 AND 9:

1. Foaming Behavior

[0045] In each case 5 wt.-% aqueous surfactant solutions are prepared from the shampoos/shower gels of Example 1 and comparison examples 8 and 9. In each case 1 g of the surfactant solutions is introduced into a 10 ml graduated cylinder. Each of the surfactant solutions is shaken uniformly for 10 s.

[0046] The shampoo/shower gel according to the invention of Example 1 here foams up to the 5 ml mark of the graduated cylinder, whereas the surfactant solution according to comparison example 8 only foams up to the 2 ml mark and the surfactant solution according to comparison example 9 only foams up to the 5 ml mark.

[0047] In other words, the shampoo according to the invention according to Example 1 performs better with respect to the foaming behavior than the shampoo according to comparison example 9 and much better than the standard shampoo according to comparison example 8.

[0048] Furthermore, the foam stability is investigated after standing for 20 minutes and 60 minutes:

[0049] In the case of all shampoos, the foam stability is comparably good, i.e. a decrease in the quantity of foam (fill level of the graduated cylinder) is barely perceptible in this period.

2. Turbidity

[0050] For the shampoos produced according to Example 1 and comparison example 8, the turbidity is determined according to DIN EN ISO 7027-1. For the shampoo according to Example 1 a value of 4.6 FNU is obtained, and for the shampoo according to comparison example 8 a value of >1000 FNU is obtained, i.e. a value which lies above the measurement range.

[0051] For the shampoo according to the invention, this results in the latter having a much lower turbidity, compared with shampoos with xanthan as thickener, which is perceived as pleasant and desirable by the consumer.

3. Flowability and Haptic Behavior

[0052] To determine the flowability and the haptic behavior of the shampoos from Example 1 and comparison example 8, the thixotropy, which is a measure of the flowability and the haptic behavior of the resulting shampoos, is determined over the variation in the shear stress and the shear rate in a viscosity diagram. The lower the thixotropy, the better the flowability and the haptic behavior of the shampoo.

[0053] For this, the following equipment is used: [0054] RSTCPS rheometer, Brookfield [0055] RST-TC-PA thermostat, Brookfield [0056] RCT-50-1 cone/plate measuring system, Brookfield [0057] Rheo 3000 measurement software version 2.1.109.24663, Brookfield

[0058] For this, the shear stress is plotted against the shear rate in the respective measurement tests. 300 measuring points are recorded at a constant temperature of 20° C. The test is carried out by double determination. The evaluation is effected visually. The measurement curve is generated via a Hershel-Bulkley regression.

[0059] Measurement settings: [0060] variation in the shear stress: 0.4 to 100 Pa [0061] variation in the shear rate: 0.1 to 1000 1/s [0062] thixotropy measurements: 0.4 to 50 Pa

[0063] The measurement results revealed a thixotropic area of 513 Pa*s for the shampoo according to the invention of Example 1 and a thixotropic area of 15,639 Pa*s for the shampoo of comparison example 8.

[0064] This results in an only slight thixotropic behavior and thus an excellent flow rate and haptic behavior for the shampoo according to the invention. The comparison shampoo on the other hand exhibits a significantly thixotropic behavior and thus substantially lower flow properties and haptic behavior.