Moldable gel cleanser

Abstract

A moldable gel cleanser comprising a carrageenan, a source of potassium and a glycol is disclosed.

Claims

1. A solid jelly personal care product comprising: a carrageenan; a source of potassium ions; a glycol; and a surfactant system, wherein the surfactant system comprises sodium methyl cocoyl taurate, cocamidopropyl betaine and decyl glucoside.

2. The solid jelly personal care product of claim 1, wherein the carrageenan is kappa carrageenan.

3. The solid jelly personal care product of claim 1, wherein the percentage by weight of carrageenan is about 1.5% to less than 2.0%.

4. The solid jelly personal care product of claim 2, wherein the percentage by weight of kappa carrageenan is about 1.75%.

5. The solid jelly personal care product of claim 1, wherein the percentage by weight of a source of potassium ion is about 0.25% to about 1.0%.

6. The solid jelly personal care product of claim 1, wherein the percentage by weight of glycol is about 2.5% to about 7.0%.

7. The solid jelly personal care product of claim 1, wherein the personal care product is a moldable gel cleanser in a form selected from the group consisting of strong, durable multi-use jelly cleanser; crushable, single use jelly cleanser; and gelatinous jelly cleanser.

8. A method of forming a solid jelly personal care product comprising the steps of selecting the components of the product to include a carrageenan; a source of potassium ions; a glycol; and a surfactant system, wherein the surfactant system comprises sodium methyl cocoyl taurate, cocamidopropyl betaine and decyl glucoside.

Description

DETAILED DESCRIPTION OF THE INVENTION

Definitions

(1) “Carrageenans” are linear sulfated polysaccharides that are extracted from red edible seaweeds. Carrageenans are chains of D-galactopyranosyl units joined with alternating α-1,3 and β-1,4 glycosidic linkages. There are three main varieties of carrageenan, which differ in their degree of sulfation. Kappa-carrageenan has one sulfate group per disaccharide, iota-carrageenan has two, and lambda-carrageenan has three.

(2) “Flash foaming” refers to the foam formation behavior of a substance during foaming, i.e., the amount of foam produced dependent on time or energy input.

(3) “Gel” is a soft, partially transparent semisolid substance.

(4) “Gelling agent” is a substance added to a composition to provide the texture of a gel.

(5) “Humectant” is a substance that retains moisture.

(6) “Sulfate” is a salt that forms when sulfuric acid reacts with another chemical. It's a broader term for other synthetic sulfate-based chemicals that consumers may be concerned about, such as sodium lauryl sulfate (SLS) and sodium laureth sulfate (SLES). These compounds, which are produced from petroleum and plant sources such as coconut and palm oil, are found in cleaning and personal care products. The main use for SLS and SLES in products is to create lather.

(7) “Surfactants” are compounds that lower the surface tension (or interfacial tension) between two liquids, between a gas and a liquid, or between a liquid and a solid. Surfactants may act as detergents, wetting agents, emulsifiers, foaming agents, and dispersants.

(8) “Syneresis” is the contraction of a gel accompanied by the separation out of liquid.

(9) It was observed that a combination of carrageenan and a source of potassium ions formed strong, clear, gels and was capable of supporting a surfactant system.

(10) It was also observed that specific ratios of carrageenan types impact texture, syneresis, freeze/thaw stability, and crumbling.

(11) It was also observed that a specific combination of surfactants enhances the cleansing aspects of the product (e.g., flash foaming, foam longevity, foam quality/density, mildness and skin afterfeel).

(12) The present invention achieves a balance between appropriate foam profile, while remaining gentle and mild enough to leave skin soft and conditioned.

(13) Embodiments of the present invention will now be described by way of further example only.

(14) A moldable gel cleanser according to an embodiment of the present invention is formed from components in Table 1, wherein percentages are given by weight.

(15) TABLE-US-00001 TABLE 1.sup.1 Formula INCI Name 008 009 012 020 022 026 029 030 Water 61.9 63.65 56.4 60.35 66.725 65.48 61.3 62.3993 Sodium Benzoate 0.5 0.5 0.5 0.5 0.5 N/A 0.5 0.5 Potassium sorbate 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 Glycerin 6 5 5 6 6 6 6 6 Carrageenan extract 1.75 1.75 1.75 1.75 1.75 1.75 1.75 1.75 (Genugel CG-130.sup.2) 0.8 Iota.sup.3 Sodium Methyl 9.7 7.3 15 15 7.3 5.42 7.3 7.3 Cocyl Taurate Cocamidopropyl betaine 13.3 15 .sup. N/A.sup.7 .sup. N/A.sup.8 10 11.6 10 10 Decyl glucoside N/A N/A N/A 3.25 N/A 3.25 .sup. N/A.sup.9 3.5 Ethylhexyl-glycerin; 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 Phenoxyethanol Butylene Glycol 5 5 5 6 6 5 5 6 Fragrance 0.5 0.3 1 0.5 0.5 0.3 0.5 0.5 Dye N/A 2 2 N/A N/A N/A N/A 0.0007 50% citric acid 0.25 0.1 0.25 N/A 0.125 0.1 0.25 0.95 solution Total: 100 100 100 100 100 100 100 100 Formula INCI Name 031 061 117 119 120 172 Water 68.4 68.05 60.26 60.26 62.26 58.25965 Sodium Benzoate 0.5 0.5 N/A N/A N/A N/A Potassium sorbate 0.5 0.5 0.5 0.5 0.5 0.5 Glycerin 6 6 6 6   8 8 Carrageenan extract 1.75 1.75 1.75   .sup. 1.225 .sup.4 1.75 1.75 (Genugel CG-130.sup.2) Sodium Methyl .sup. N/A.sup.5 .sup. N/A.sup.6 8.85  8.85 8.85 8.85 Cocyl Taurate Cocamidopropyl betaine 10 N/A 12.14 12.14 12.14 12.14 Decyl glucoside 3.5 9.3 4.5 4.5 4.5 4.5 Ethylhexyl-glycerin; 0.6 0.6 0.6 0.6 0.6 0.6 Phenoxyethanol Butylene Glycol 6 5 5 5   .sup. N/A.sup.10 5 Fragrance 0.5 0.5 0.3 0.3 0.1 0.3 Dye N/A N/A N/A N/A N/A 0.00035 50% citric acid 0.25 N/A 0.1 0.1 0.1 0.1 solution Total: 100 100 100 100    100 100 .sup.1All ingredients are in (wt %). .sup.2See attached CP Kelco Product Data Sheet Genugel carrageenan CG-130 (2011). .sup.3Genuviso CG-131. .sup.4 Genu Gum type RL-60Z 0.525. .sup.5Sodium Hydrolyzed Potato Starch Dodecenylsuccinate 2%. .sup.6Potassium Cocoyl Glycinate 7.8%. .sup.7Sodium Lauryl Sarcosinate 12%. .sup.8Water; Cocamidopropyl Hydroxysultaine; Sodium Chloride 8%. .sup.9Sodium Lauroyl Sarcosinate 5.3% .sup.10Glucam E-10 Humectant 1%.

(16) Each of the formulas were tested for a number of criteria to determine acceptability. Results are in Table 2 below.

(17) TABLE-US-00002 TABLE 2 Other Formed Gel Met Met minimum Polymer Matrix Capable Aesthetic foam height Surfactant % and of pouring and Release threshold For- Combination Trade % Kappa Trade Trade Being Molded Criteria (pass/fail) mula # and Ratios Names Carrageenan Name Name (pass/fail) (pass/fail) (380 mL) 008 1:2 Adinol CT24- 1.75 Genugel N/A Pass Pass N/A SMCT:CAPB LQ-(RB), CG-130 TEGO Betain F 50 009 1:3 Adinol CT24- 1.75 Genugel N/A Pass Pass N/A SMCT:CAPB LQ-(RB), CG-130 TEGO Betain F 50 012 1:1 Adinol CT24- 1.75 Genugel N/A Pass Pass N/A SMCT:Sarcosinate LQ-(RB), CG-130 Crodasinic LS30 020 1:1 Adinol CT24- 1.75 Genugel I- Pass Pass Pass SMCT:CAPHS LQ-(RB), CG-130 Carrageenan, Mirataine 0.8, CBS Genuvisco CG-131 022 2:1 Adinol CT24- 1.75 Genugel N/A Pass Pass N/A SMCT:CAPHS LQ-(RB), CG-130 Mirataine CBS 026 1:3:1 Adinol CT24- 1.75 Genugel N/A Pass Pass Pass SMCT:CAPB:DG LQ-(RB), CG-130 TEGO Betain F 50, Plantaren 2000 029 1:1:2 Adinol CT24- 1.75 Genugel N/A Pass Pass Pass SMCT:Sarcosinate:CABP LQ-(RB), CG-130 Crodasinic LS30, Plantaren 2000 030 1:2:1 Adinol CT24- 1.75 Genugel N/A Pass Pass Pass SMCT:CAPB:DG LQ-(RB), CG-130 TEGO Betain F 50, Plantaren 2000 031 1:2:1 PS- Structure PS- 1.75 Genugel N/A Pass Pass N/A 111:CAPB:DG 111, TEGO CG-130 Betain F 50, Plantaren 2000 061 1:2 PC Amilite GCK 1.75 Genugel N/A Fail Fail N/A Glycinate 12H CG-130 117 1:2:1 Adinol CT24- 1.75 Genugel N/A Pass Pass Pass SMCT:CAPB:DG LQ-(RB), CG-130 TEGO Betain F 50, Plantaren 2000 119 1:2:1 Adinol CT24- 1.225 Genugel Locust Pass Fail N/A SMCT:CAPB:DG LQ-(RB), CG-130 Bean Gum TEGO Betain (Genu F 50, Gum RL Plantaren 200Z CG) 2000 0.525% 120 1:2:1 Adinol CT24- 1.75 Genugel N/A Pass Fail N/A SMCT:CAPB:DG LQ-(RB), CG-130 TEGO Betain F 50, Plantaren 2000

(18) A crushable, single use (crumble) moldable gel cleanser according to an embodiment of the present invention is formed from components in Table 3, wherein percentages are given by weight.

(19) TABLE-US-00003 TABLE 3 Crumble 1:2:1 SMCT:CAPB:DG crumble 8% glycerin US INCI Name Percentage Water 59.32965 Potassium Sorbate 0.5 Glycerin 8 Genugel CG-130 0.68 Sodium Methyl Cocoyl Taurate; Water 8.85 Cocamidopropyl Betaine 12.14 Decyl Glucoside 4.5 Ethylhexylglycerin; Phenoxyethanol 0.6 Butylene Glycol 5 Fragrance 0.3 Red 40 0.00035 Citric Acid 0.1

(20) A Jell-O®-like moldable gel cleanser according to an embodiment of the present invention is formed from the components in Table 4, wherein percentages are given by weight.

(21) TABLE-US-00004 TABLE 4 US INCI Name Percentage Water 61.85 Sodium Benzoate 0.5 Potassium Sorbate 0.5 Glycerin 6 Genugel Carrageenan CG-130 0.88 Satiagel VPC 508 (Cargill, iota 2.62 carrageenan) Sodium Methyl Cocoyl Taurate; Water 7.3 Cocamidopropyl Betaine 10 Decyl Glucoside 3.5 Ethylhexylglycerin; Phenoxyethanol 0.6 Butylene Glycol 5 Fragrance 0.5 Calcium Chloride 0.75

(22) A method of manufacturing a moldable gel cleanser according to the present invention and based upon the above stated groups of components is as follows: 1. Add 100% purified water at ambient temperature and begin mixing. 2. Add sodium benzoate (if in formula) and mix until fully dissolved. 3. Add potassium sorbate and mix until fully dissolved. 4. Add glycerin and mix until uniform. 5. Begin heating to 80-85° C. 6. Add Genugel GC-130 and mix until uniform. 7. Add sodium methyl cocoyl taurate (or substitute) at 80° C. and mix until uniform. 8. Add cocamidopropyl betaine (if in formula or substitute) and mix until uniform. 9. Add decyl glucoside (if in formula) and mix until uniform. 10. Begin cooling to 65° C. 11. Add ethylhexyl-glycerin; phenoxyethanol and mix until uniform. 12. Add dye solution dropwise to desired shade. 13. Use citric acid to adjust pH to 5.5-5.7. 14. Pour solution in to molds if desired.

(23) The above stated method is an example only and may be varied depending on the specific components used.

(24) The present inventors determined that: Carrageenan forms solid jellies. Potassium sorbate is a good preservative/crosslinker. 1.5%-2% kappa carrageen works well in the strong, durable multi-use and the Jell-O® forms. 1.75% kappa carrageenan works best in the strong, durable multi-use and the Jell-O® forms. Glycinates are incompatible, as demonstrated using potassium cocoyl glycinate. Iota carrageenan does not work well on its own. A blend of iota carrageenan and kappa carrageenan works well. PEG-80 and any polyethoxylated chemicals are incompatible with carrageenan. The optimal carrageenan ratio for an iota/kappa blend is 0.88:2.62.

Example

(25) Surfactants were tested. The results are shown in Table 5. As can be seen below, not all surfactants are compatible with the moldable gel cleanser of the invention.

(26) TABLE-US-00005 TABLE 5 Surfactant Results Sodium methyl cocoyl taurate Optimal foaming and density (SMCT) Sodium lauryl sarcosinate Flash foam inferior to SMCT K/Na cocoyl glycinate Incompatible with carrageenan PS-111 Foam booster Sodium cocoyl isethionate Incompatible with carrageenan Cocamidopropyl betaine Best flash foaming/quality Cocamidopropyl hydroxysultaine Foam too dense/creamy Disodium amphodiacetate Amphoacetates incompatible with carrageenan Sodium lauroamphoacetate Amphoacetates incompatible with carrageenan Decyl glucoside Boosts foam, enhances mildness PEG-80 sorbitan laurate Polyethoxylation incompatible with carrageenan Cocoglucoside Inferior to decyl glucoside

Example

(27) Foam Height

(28) Foam height testing is a valuable method to objectively quantify foaming performance. It is performed by a tumbling instrument to ensure reproducibility. This method involves inverting cylinders for 32 cycles with 90 g water and 10 g product. Data are collected after 2, 4, 8, 16 and 32 cycles.

(29) More foam is preferred.

(30) Flash foaming is important.

(31) Cycles 2-8, 16-32.

(32) Helpful to quantify cleanser performance.

Example

(33) Syneresis Experiment Method

(34) 1. Create batch and pour (2) semi-sphere samples, allow to fully cool.

(35) 2. Once cool, record masses.

(36) a. If testing open-air, continue with steps 3-11. b. If testing enclosed, go to step 12.
3. Obtain one standard tongue depressor and record its mass.
4. Stick tongue depressor through one of the jelly, so that the stick is parallel with the flat side of the semi-sphere.
5. Record mass of jelly+stick.
6. Lay tongue depressor across mouth of 400 mL beaker, so jelly is suspended in air.
7. Record current time.
8. In 24 hours, record mass of sample+stick.
9. In 48 hours, record mass of sample+stick.
10. In 72 hours, record mass of sample+stick.
11. After 3 days, calculate % mass lost per day.
12. Obtain 8 oz jar and record mass.
13. Add jelly to jar flat side down.
14. In 24 hours, remove jelly WITHOUT inverting jar.
15. Dry completely and measure mass.
16. In 48 hours, remove jelly WITHOUT inverting jar
17. Dry completely and measure mass.
18. In 72 hours, remove jelly WITHOUT inverting jar.
19. Dry completely and measure mass.
20. After 3 days, calculate % mass lost per day.

Example

(37) EIT Testing

(38) EIT (epithelial irritation testing) can be used to assess if the systems are mild enough for use on infants and toddlers.

Example

(39) The following observations can be made to assess the aesthetics of the moldable gel cleanser: Foam quality Foam density Flash foam Dry down Rinse-off Residue Texture

(40) It will be understood that, while various aspects of the present disclosure have been illustrated and described by way of example, the invention claimed herein is not limited thereto, but may be otherwise variously embodied according to the scope of the claims presented in this and/or any derivative patent application.

REFERENCES

(41) CPKelco GENU® Carrageenan Book (2002), http://www.bisi.cz/cmsres.axd/get/cms$7CVVwRhc3USVqgzxkKF96gI$2BChNrXcTq$2BOU diEtz5TfYA$2Fg1ADRHMfXfdEjUsYQagpUs9N6byPOkok$3D. T. R. Thrimawithana et al., Texture and rheological characterization of kappa and iota carrageenan in the presence of counter ions, Carbohydrate Polymers, Volume 82, Issue 1, 2 Aug. 2010, Pages 69-77, https://doi.org/10.1016/j.carbpol.2010.04.024 and https://www.sciencedirect.com/science/article/pii/S0144861710002894. Shimadzu Evaluation of Jelly Strength (Bloom Value), https://www.shimadzu.com/an/industry/foodbeverages/n9j25k00000dqazu.htm. M. J. Hernánadez et al., Viscous Synergism in Carrageenans (κ and λ) and Locust Bean Gum Mixtures: Influence of Adding Sodium Carboxymethylcellulose, https://journals.sagepub.com/doi/abs/10.1106/6BCX-6XH6-PT82-8WCK. “Kappa carrageenan, Potassium salt form: Gels, face masks, shower gels, emulsions: Forms firm and brittle gels, CP Kelco Best Choice Guidelines (2012), https://www.cpkelco.com/wp-content/uploads/2012/08/FoodCatalog.pdf. See also CP Kelco Sensorial pleasures from nature-based ingredients, https://www.in-cosmetics.com/RXUK/RXUK_InCosmetics/2014-website/Documents/CP%20Kelco%20presentation_final.pdf?v=635340307802890491. Cargill Beauty Unleashing Nature Sustainably, http://www.chembuyersguide.com/images/cargill.pdf.