METHOD OF INCREASING THE FOAMING PROPERTIES OF DETERGENT COMPOSITIONS BY USE OF SACCHARIDE ISOMERATE

Abstract

The present invention relates to a method of increasing the foaming properties of detergent compositions comprising at least one surfactant by incorporation of saccharide isomerate.

Claims

1. A method of increasing the foaming properties of a detergent composition comprising at least one surfactant, said method comprising the step of adding saccharide isomerate into said detergent composition.

2. The method according to claim 1, wherein the saccharide isomerate consists essentially of a) 1.5 to 5 wt.-% of psicose, b) 1 to 5 wt.-% of mannose, c) 10 to 30 wt.-% of fructose, d) 20 to 60 wt.-% of glucose and e) 0 to 5 wt.-% of galactose.

3. The method according to claim 1, wherein the amount of the saccharide isomerate is selected in the range from 0.01 to 10 wt.-%, more preferably in the range from 0.1 to 7.5 wt.-%, most preferably in the range from 0.2 to 5 wt.-%, based on the total weight of the topical composition

4. The method according to claim 1, wherein the at least one surfactant comprises at least one soap.

5. The method according to claim 4, wherein the at least one soap is selected from the group consisting of sodium or potassium salts of aliphatic acids having from about 8 to 22 carbon atoms, preferably from about 8 to about 20 carbon atoms, most preferably from about 10 to about 18 carbon atoms as well as mixtures thereof.

6. The method according to claim 4, wherein the at least one soap is selected from the group consisting of sodium or potassium salts of stearic acid, lauric acid and myristic acid as well as mixtures thereof.

7. The method according to claim 4, wherein the detergent composition is an extruded soap bar and the amount of the at least one soap is selected in the range from 30 to 95 wt.-%, preferably in the range from 40 to 80 wt.-%, most preferably in the range from 45 to 65 wt.-%, based on the total weight of the detergent composition.

8. The method according to claim 4, wherein the detergent composition is a liquid soap, a cream soap, a melt or a pour soap bar and the amount of the at least one soap selected in the range from 3 to 35 wt.-%, more preferably in the range from 5 to 30 wt.-%, most preferably in the range from 7 to 20 wt.-%, based on the total weight of the detergent composition.

9. The method according to claim 4, wherein the at least one soap constitutes greater than 75 wt.-%, preferably greater than 80 wt.-%, more preferably greater than 85 wt.-% of the total amount of surfactants present in the detergent composition.

10. The method according to claim 4, wherein the detergent composition comprises at least one additional surfactant selected from the group consisting of consisting of cocoamidopropyl betaine, sodium laureth sulfate, sodium lauryl sulfate disodium lauryl sulfosuccinate, glyceryl stearate, PEG-100 stearate, lauryl glucoside as well as mixtures thereof.

11. The method according to claim 1, wherein the detergent composition further comprises at least one humectant.

12. The method according to claim 11, wherein the at least one humectant is glycerol.

13. The method according to claim 1, wherein the detergent composition is a liquid cleansing composition, a wash gel, a soap bar, a hair shampoo, a body shampoo, a foam bath, a shower bath or a shaving preparation.

14. Use of saccharide isomerate as foam enhancing agent and/or foam booster.

15. Use according to claim 14, to enhance the foam volume.

Description

EXAMPLES

1. Foaming Properties of PENTAVITIN®

[0059] All foam tests have been done using an automated SITA foam tester R 2000.

[0060] Test Parameters:

concentration: 5 g/l in tap water (˜9.6° dH)
sample volume: 250 ml
sample temperature: 25° C.±1.5 K
number of measuring series: 3
Use of foam enhancement ring: No
mixing conditions: 40° C. for 2 h

[0061] Foam Generation:

number of measuring intervals/stirring cycles: 60
stirring time/measuring interval: 10 s
stirring speed: 1500 U/min

[0062] 1. Clear Solid Soap

[0063] A ready to use transparent melt and pour solid soaps base was used in this example.

TABLE-US-00001 TABLE 1a Formulation clear solid soap Ref-1 Inv-1 Inv-2 Phase Tradename INCI Name Wt.-% A Crystal SLS glycerin; aqua; sodium stearate; 100 99.8 99.5 Free* propylene glycol, sorbitol, sodium laurate; sodium laureth sulfate; sodium chloride; disodium lauryl sulfosuccinate; stearic acid; lauric acid; pentasodium pentetate; tetrasodium etidronate B PENTAVITIN ® saccharide isomerate; aqua; citric acid; — 0.2 0.5 sodium citrate *commercial soap base (soap block)

[0064] Protocol: [0065] Cut the soap block into small pieces. [0066] Place the pieces in a beaker and heat with a water bath up to 65° C. [0067] Add PENTAVITIN® under slow stirring, let stir 3 min [0068] Slowly pour the liquid soap into the heat-resistant plastic mould. [0069] Once the soap has completely cooled, leave to dry for at least 24 hours.

TABLE-US-00002 TABLE 1b Foam volume after 60 stirring cycles Foam volume [ml] Ref-1 530 Inv-1 760 Inv-2 750

[0070] The samples according to present invention Inv-1 and Inv-2 containing 0.2% respectively 0.5% of PENTAVITIN® showed a significantly higher foam volume linked as well with faster foam building, highlighting the excellent foam boosting properties of the saccharide isomerate.

[0071] 2. Opaque Solid Soap

[0072] A ready to use opaque melt and pour solid soap base was used in this example.

TABLE-US-00003 TABLE 2a Formulation opaque solid soap Ref-2 Inv-3 Inv-4 Phase Tradename INCI Name Wt.-% A Crystal Goats aqua; glycerin; sodium stearate; 100 99.8 99.5 Milk Soap* sorbitol, sodium laurate; goat milk; propylene glycol; sodium laureth sulfate; sodium chloride; sodium lauryl sulfate; titanium dioxide; stearic acid; lauric acid; pentasodium pentetate; tetrasodium etidronate A PENTAVITIN ® saccharide isomerate; aqua; citric — 0.20 0.50 acid; sodium citrate *commercial soap base (soap block)

[0073] Protocol: [0074] Cut the soap block into small pieces. [0075] Place the pieces in a beaker and heat with a water bath up to 65° C. [0076] Add PENTAVITIN® under slow stirring, let stir 3 min [0077] Slowly pour the liquid soap into the heat-resistant plastic mould. [0078] Once the soap has completely cooled, leave to dry for at least 24 hours.

TABLE-US-00004 TABLE 2b Foam volume after 60 stirring cycles Foam volume [ml] Ref-2 275 Inv-3 750 Inv-4 460

[0079] The samples according to present invention Inv-3 and Inv-4 containing 0.2% respectively 0.5% of PENTAVITIN® showed a higher foam volume linked as well with faster foam building. This is highlighting the foam boosting properties of the ingredient of the invention. The effect in this case is even more important with a lower concentration.

[0080] 3. Cream Cleanser

[0081] A conventional cream cleanser was used in this example.

TABLE-US-00005 TABLE 3a Formulation cream cleanser Ref-3 Inv 5 Phase Ingredients INCI Name Wt.-% A WATER DEM. Aqua Ad 100 Ad 100 Edeta BD Disodium EDTA 0.05 0.05 Glycerin 99.5% Glycerin 25.00 25.00 Palmera A9914 Myristic acid 25.00 25.00 PALMAC 70-18 Stearic acid 5.50 5.50 Arlacel 165 Glyceryl stearate, 3.00 3.00 PEG-100 stearate PEG-1500 PEG-150 5.00 5.00 B Potassium Potassium hydroxide 5.17 5.17 Hydroxide C MIRAPOL 550 SB Polyquaternium-7 2.00 2.00 Dehyton PK 45 Cocaamidopropyl 3.00 3.00 betaine Viatenza Olive PE8 Olive oil PEG-8 esters 2.00 2.00 SERICIN Sericin; aqua; 0.50 0.50 potassium sorbate; citric acid D PENTAVITIN ® Saccharide isomerate; 0.00 0.50 aqua; citric acid; sodium citrate

[0082] Protocol: [0083] Mix phase A and heat up to 70-75° C. under stirring [0084] Add phase B slowly (10 min) to phase A at 70-75° C. and let stir [0085] 100 min at 70-75° C. (200 rpm) [0086] Add amount of water (75° C.) which lost during heating phase [0087] Let cool down under stirring to 40° C. [0088] Add C and let stir until homogenous [0089] Add phase D under stirring

TABLE-US-00006 TABLE 3b Foam volume after 60 stirring cycles Foam volume [ml] Ref-3 650 Inv-5 770

[0090] The composition of the invention show an improvement of the foaming properties. both on the foam speed and foam volume compared to the reference.

[0091] 4. In Vivo Evaluation

[0092] The following soap based cleansers (Ref-4, Inv-6) have been tested in a blind way by a group of 30 volunteers on the forearm during an in vivo study.

TABLE-US-00007 TABLE 4a Formulation soap based cleanser Ref-4 Inv-6 Phase Ingredient INCI name Wt.-% A WATER DEM. Aqua Ad 100 Ad 100 Edeta BD Disodium EDTA 0.05 0.05 Plantacare 1200 UP Lauryl glucoside 4.00 4.00 POLYGLYKOL PEG-32 5.00 5.00 1500 S Palmera A9912 Lauric acid 3.30 3.30 PALMERA A9818 Stearic acid 12.00 12.00 Palmera A9914 Myristic acid 11.50 11.50 Tego Care 165 Glyceryl stearate, 2.00 2.00 PEG-100 stearate B Potassium Potassium 4.65 4.65 Hydroxide hydroxide WATER DEM. Aqua 4.65 4.65 C PENTAVITIN ® Saccharide 0.00 0.50 isomerate; aqua; citric acid; sodium citrate

[0093] Volunteers received the following guidance for the application: Moisten application area (1 forearm/product), apply product by gentle massage for 20 sec followed by 10 sec of more energetic massage and leave the foam for 1 minute. Standardized rinsing using the atomizer (3 times) and standardized drying by taping with a tissue (3 times).

[0094] Volunteers have been asked to answer two questions related to the foam properties after the first application. The results of the evaluation of the questionnaire are outlined in Table 4b.

TABLE-US-00008 TABLE 4b Results of the questionaire Ref-4 Inv-6 How would you describe the density of the foam? Low 57% 50% High 43% 50% How would you describe the foam? Fine and Creamy 47% 29% Silky 10% 31% Smooth 23% 31% Watery 10%  3% Sticky 10%  6% Slippery  0%  0%

[0095] The density of the foams of the formula according to the invention has been rated significantly higher than the ones of the reference formula. In addition, the foam of the formula according to the invention has been described as being more silky and smoother as well as less sticky and less watery which reflects an overall better foam texture.

2. Comparative Example with Other Sugar/Sugar Mixtures

[0096] a) Prepare the Composition A and B

TABLE-US-00009 TABLE 5a composition A (Shower Gel) Handelsname INCI Name Phase wt.-% Water Dem AQUA A ad 100 Texapon SODIUM LAURETH A 40 NSO - BZ SULFATE Tego COCAMIDOPROPYL A 7 Betain F50 BETAINE Antil 171 PEG-18 GLYCERYL B 1.7 OLEATE/COCOATE; AQUA PUROX S SODIUM BENZOATE C 0.5 Citric Acid Anhydrous CITRIC ACID C 0.21 Sodium Chloride SODIUM CHLORIDE C 0.3

TABLE-US-00010 TABLE 5b composition B (Cream Cleanser) Handelsname INCI Name Phase wt.-% Water Dem AQUA A ad 100 Edeta BD DISODIUM EDTA A 0.05 Plantacare 1200 UP LAURYL GLUCOSIDE A 4 POLYGLYKOL 1500 S PEG-32 A 5 Palmera A9912 LAURIC ACID A 3.3 Palmera A9818 STEARIC ACID A 12 Palmera A9914 MYRISTIC ACID A 11.5 Tego Care 165 GLYCERYL STEARATE; A 2 PEG-100 STEARATE Potassium Hydroxide POTASSIUM HYDROXIDE B 4.65 Emprove exp Ph Eur Water Dem AQUA B 4.65

[0097] b.) Prepare Solutions 1-5

TABLE-US-00011 TABLE 5c Solution 1A: 0.5 g Composition A 99.5 g Water Dem Solution 1B: 0.5 g Composition B 99.5 g Water Dem Solution 2: 0.1 g PENTAVITIN ® 49.9 g Water Dem Solution 3: 0.1 g D-Fructose (Fluka 47739) 49.9 g Water Dem Solution 4: 0.1 g D-Glucose (Dextrose, Sigma D9434-250 g) 49.9 g Water Dem Solution 5: 0.04 g D-Fructose (Fluka 47739) 0.04 g D-Glucose (Dextrose, Sigma D9434-250) 0.02 g D(+) Maltose Monohydrat (Fluka 63419) 49.9 g Water Dem

[0098] c.) Assessment of the Foaming Properties [0099] Put 5.0 g of Solution 1A respectively Solution 1B in a test-tube (Height 15 cm, Diameter 2.2 cm) [0100] Add 2.5 g of solution 2/3/4/or 5 or water (Placebo) [0101] Mark the height of liquid [0102] Stir with VWR Analog Vortex Mixer, speed 10, Duration 1 min for mixtures comprising solution 1A [0103] Stir by hand shaking for 1 min for mixtures comprising solution 1B [0104] Mark the height of foam [0105] Measure the difference between surface of liquid (before stirring) and max height of foam (Foam height). The results are depicted in Table 5d in mm and in % based on Placebo (set to 100%).

TABLE-US-00012 TABLE 5d Results Foam Height # mixture with Solution 1A Solution 1B Placebo water 12 mm 100%  22 mm 100% Inv-7 solution 2 14 mm 117%  28 mm 127% (PENTAVITIN ®) Ref-5 solution 3 (D-Fructose) 8 mm 67% 20 mm  91% Ref-6 solution 4 (D-Glucose) 8 mm 57% 20 mm  91% Ref-6 solution 5 6 mm 50% 25 mm 113% (sugar mixture)

[0106] As can be retrieved from the results presented in table 5d, only the saccharide isomerate according to the present invention (i.e. PENTAVITIN®) leads to a significant increase in the foaming properties independent on the respective composition.