US20060040834A1 - Enhanced oil delivery from structured surfactant formulations - Google Patents

Enhanced oil delivery from structured surfactant formulations Download PDF

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US20060040834A1
US20060040834A1 US11/207,238 US20723805A US2006040834A1 US 20060040834 A1 US20060040834 A1 US 20060040834A1 US 20723805 A US20723805 A US 20723805A US 2006040834 A1 US2006040834 A1 US 2006040834A1
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weight
composition
component
oil
surfactant
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Peter Hilliard
Nadia Soliman
Peter Haugk
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Colgate Palmolive Co
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Colgate Palmolive Co
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Priority to US11/207,238 priority Critical patent/US20060040834A1/en
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Priority to US11/668,740 priority patent/US7749951B2/en
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/0291—Micelles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/10—Dispersions; Emulsions
    • A61K9/107—Emulsions ; Emulsion preconcentrates; Micelles
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A61Q19/10—Washing or bathing preparations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • A61Q5/02—Preparations for cleaning the hair
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/29—Sulfates of polyoxyalkylene ethers
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C11D1/94—Mixtures with anionic, cationic or non-ionic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/18—Hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2075—Carboxylic acids-salts thereof
    • C11D3/2079—Monocarboxylic acids-salts thereof
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2093—Esters; Carbonates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/22—Carbohydrates or derivatives thereof
    • C11D3/222—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
    • C11D3/227—Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin with nitrogen-containing groups
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/373—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicones
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/38—Products with no well-defined composition, e.g. natural products
    • C11D3/382—Vegetable products, e.g. soya meal, wood flour, sawdust
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/38—Cationic compounds
    • C11D1/52—Carboxylic amides, alkylolamides or imides or their condensation products with alkylene oxides
    • C11D1/523—Carboxylic alkylolamides, or dialkylolamides, or hydroxycarboxylic amides (R1-CO-NR2R3), where R1, R2 or R3 contain one hydroxy group per alkyl group
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C11D1/90—Betaines

Definitions

  • the invention is directed to a novel approach to enhance the delivery of an oil phase to a substrate such as hair, skin or wool.
  • aspects of the invention use spherulite technology with selective incorporation of the oil phase after the spherulites are formed.
  • Body wash products can be very inefficient delivery vehicles for depositing hydrophobic actives and moisturizers on the skin's surface, since most of the hydrophobic actives are rinsed away during the washing process.
  • the majority of body wash products consist of entangled rod-like micelle formulas.
  • Current oil-in-water body wash formulas do not form stable products at high oil concentrations, since the oils and product aqueous base have significantly different densities.
  • micellar based body washes can have high viscosities, but not long range structure (substantially larger than the dimensions of the surfactant micelles themselves), products containing high concentrations of oil will be unstable and phase separate with time.
  • One solution to this problem is to use oil-in-water emulsion systems to incorporate oil into surfactant systems. However, these systems can require heat to make, may be unstable at higher oil concentrations, and may result in a significant impairment of cleansing properties at low surfactant concentrations.
  • Spherulite based formulas with lamellar surfactant phases which form structured systems have been described. Examples include U.S. Pat. Nos. 5,661,189; 5,965,500; and 6,174,846. These spherulite systems are used primarily to enhance the stability of body wash formulas containing significant amounts of emollients and oils through a significant reduction in the rate of diffusion of oil droplets in the surfactant media. Thus, increased concentrations of oils can be incorporated into the products with the potential to delivery higher concentrations to the skin's surface, when compared to rod like micelle formulations.
  • the rheological behavior of all surfactant solutions is strongly dependent on the microstructure, i.e., the shape and concentration of micelles or other self-assembled structures in solution.
  • micelles concentration above the critical micelle concentration or CMC
  • CMC critical micelle concentration
  • spherical, cylindrical (rod-like) or discoidal micelles may form.
  • ordered liquid crystalline phases such as lamellar phase, hexagonal phase or cubic phase may form.
  • the lamellar phase for example, consists of alternating surfactant bilayers and water layers. These layers are not generally flat but fold to form spherical onion like structures called vesicles or liposomes.
  • the hexagonal phase on the other hand, consists of long cylindrical micelles arranged in a hexagonal lattice.
  • the microstructure of most personal care products consist of either spherical micelles; rod micelles; or a lamellar dispersion.
  • micelles may be spherical or rod-like.
  • Formulations having spherical micelles tend to have a low viscosity and exhibit newtonian shear behavior (i.e., viscosity stays constant as a function of shear rate; thus, if easy pouring of product is desired, the solution is less viscous and, as a consequence, it doesn't suspend as well).
  • the viscosity increases linearly with surfactant concentration.
  • Rod micellar solutions are more viscous because movement of the longer micelles is restricted. At a critical shear rate, the micelles align and the solution becomes shear thinning. Addition of salts increases the size of the rod micelles thereof increasing zero shear viscosity (i.e., viscosity when sitting in bottle) which helps suspend particles but also increases critical shear rate (point at which product becomes shear thinning; higher critical shear rates means product is more difficult to pour).
  • Lamellar dispersions differ from both spherical and rod-like micelles because they can have high zero shear viscosity (because of the close packed arrangement of constituent lamellar droplets), yet these solutions are very shear thinning (readily dispense on pouring). That is, the solutions can become thinner than rod micellar solutions at moderate shear rates.
  • liquid cleansing compositions therefore, there is the choice of using rod-micellar solutions (whose zero shear viscosity, e.g., suspending ability, is not very good and/or are not very shear thinning); or lamellar dispersions (with higher zero shear viscosity, e.g. better suspending, and yet are very shear thinning).
  • rod-micellar solutions whose zero shear viscosity, e.g., suspending ability, is not very good and/or are not very shear thinning
  • lamellar dispersions with higher zero shear viscosity, e.g. better suspending, and yet are very shear thinning.
  • lamellar compositions are generally more desirable (especially for suspending emollient and for providing consumer aesthetics), but more expensive in that they generally require more surfactant and are more restricted in the range of surfactants that can be used.
  • rod-micellar solutions When rod-micellar solutions are used, they also often require the use of external structurants to enhance viscosity and to suspend particles (again, because they have lower zero shear viscosity than lamellar phase solutions). For this, carbomers and clays are often used. At higher shear rates (as in product dispensing, application of product to body, or rubbing with hands), since the rod-micellar solutions are less shear thinning, the viscosity of the solution stays high and the product can be stringy and thick. Lamellar dispersion based products, having higher zero shear viscosity, can more readily suspend emollients and are typically more creamy. Again, however, they are generally more expensive to make (e.g., they are restricted as to which surfactants can be used and often require greater concentration of surfactants).
  • lamellar phase compositions are easy to identify by their characteristic focal conic shape and oily streak texture while hexagonal phase exhibits angular fan-like texture.
  • micellar phases are optically isotropic.
  • lamellar phases may be formed in a wide variety of surfactant systems using a wide variety of lamellar phase “inducers” as described, for example, in PCT publication, WO 97/05857.
  • the transition from micelle to lamellar phase are functions of effective average area of headgroup of the surfactant, the length of the extended tail, and the volume of tail.
  • branched surfactants or surfactants with smaller headgroups or bulky tails are all effective ways of inducing transitions from rod micellar to lamellar.
  • U.S. Pat. No. 5,661,189 directed to a detergent composition, teaches an aqueous liquid cleansing and moisturizing composition comprising a surface active agent selected from anionic, nonionic, zwitterionic and cationic surface active agents and mixtures thereof; an benefit agent having a weight average particle size in the range 50 to 500 microns; and a thickening agent.
  • the thickening agent is added to the benefit agent in amount from 1 to 50% wt, based on the benefit agent.
  • U.S. Pat. No. 5,965,500 for a stable liquid composition comprising high levels of emollients, teaches the use of high foaming aqueous liquid compositions with levels of oil/emollient equal to or in excess of level of surfactant. Good levels of foam can be maintained at such high levels of emollient.
  • compositions also preferably comprise C12-24 fatty acid and/or cationic polymer.
  • U.S. Pat. No. 6,174,846 for a liquid composition with enhanced low temperature stability teaches the use of liquid cleansing compositions in a lamellar phase.
  • Use of minimum amounts of defined polymeric hydrophilic emulsifier in combination with a lamellar phase inducing structurant has been found to enhance both initial viscosity and free thaw (low temperature) viscosity/stability.
  • United States Patent Application Publication Number 2003/010246 for a stable surfactant compositions for suspending components teaches free-flowing surfactant composition comprising at least one anionic surface-active agent, an alkanolamide, an electrolyte, and water is described.
  • the composition is a surfactant composition that has free-flowing non-Newtonian shear thinning properties and the ability to suspend components and is stable under at least one freeze/thaw cycle.
  • FIG. 1 depicts the effect of surfactant phase structure on sunflower oil deposition: spherulites vs. emulsified oil.
  • spherulites vs. emulsified oil.
  • the spherulite formula delivers approximately 4.5 times more oil to a wool substrate when compared to an oil in water emulsion, p ⁇ 0.05.
  • Table 1 The compositions are outlined in Table 1.
  • FIG. 2 shows that the viscosity of spherulite compositions containing sunflower oil can be modified through incorporation of a guar gum such as Jaguar S (Rhodia). Increasing the concentration of Jaguar S guar gum significantly increases formula viscosity as measured with a Brookfield Viscometer.
  • the compositions are outlined in Table 6.
  • compositions comprising a surfactant component, a salt, and an oil phase, wherein the surfactant component comprises (a) about 6 to about 10 weight % sodium trideceth sulfate; (b) about 1.8 to about 3.0 weight % of a structuring agent; (c) about 1.1 to about 3.0 weight % of a foam booster; (d) water; and (e) about 0.2 to about 0.8 weight % of a cationic guar gum.
  • surfactant component comprises (a) about 6 to about 10 weight % sodium trideceth sulfate; (b) about 1.8 to about 3.0 weight % of a structuring agent; (c) about 1.1 to about 3.0 weight % of a foam booster; (d) water; and (e) about 0.2 to about 0.8 weight % of a cationic guar gum.
  • the invention is directed to a novel approach to enhance the delivery of an oil phase to a substrate such as hair, skin or wool.
  • aspects of the invention use spherulite technology with selective incorporation of the oil phase after the spherulites are formed.
  • the spherulite material is formed in the presence of salt with shear and slightly acidic pH. This approach takes advantage of the significant reduction in particle diffusion in the spherulite structured body wash formulas.
  • a spherulite composition may be made by combining a surfactant component, salt and an oil phase wherein:
  • the surfactant component preferably comprises (based on the final formula of the spherulite composition):
  • the salt component is preferably NaCl
  • the oil phase preferably comprises up to about 15 weight % of the total composition.
  • the oil phase comprises one or more oils selected from the group consisting of vegetable oils, mineral oils, and silicone oils.
  • the spherulite composition is made using sequential steps comprising:
  • Amounts are based on the weight of the total composition.
  • the total water content of the spherulite composition is in the range of about 55 to about 80 weight %.
  • steps (c1) and (d1) can be reversed.
  • portions of the surfactant composition may be found premixed.
  • ingredients (a)-(c) of the surfactant composition are available as MIRACARE SLB-365 surfactant mixture from Rhodia.
  • Optional ingredients can be included in the spherulite system to control and/or build the viscosity of the final product.
  • a noncationic guar gum for example, up to about 1 weight % of Jaguar S from Rhodia
  • FIG. 2 shows that as the total amount of Jaguar S and Jaguar C-17 materials in the formula is increased, then the viscosity of the formula can be significantly increased from about 5,000 to about 13,500 cps, using a Brookfield Viscometer (#5 spindle at 20 rpm)).
  • One particular embodiment of the invention may be described as a spherulite composition
  • a surfactant pre-mix which contains less than or equal to about 36 weight % sodium trideceth sulfate, less than or equal to about 10 weight % lauroamphoacetate, and less than or equal to about 6 to 11 weight % cocomonoethanolamide in water.
  • This surfactant premix can be obtained from Rhodia, and is similar to a commercial material available as MIRACARE SLB-365. The exact concentrations of the individual surfactant components can be modified to alter the surfactant concentrations in the final product.
  • about 0.2 to about 0.8 weight %, more preferably about 0.2 to about 0.7 weight %, and most preferably about 0.3 to about 0.5 weight % of a cationic guar gum such as guar hydroxypropyl trimonium chloride (“HPTC”) (for example, as sold under the name Jaguar C-17 from Rhodia (Cranberry, N.J.)) may, for example, be added to water in the formulation and mixed until fully hydrated and dispersed.
  • HPTC guar hydroxypropyl trimonium chloride
  • the additional water in the formulation represents, for example, about 56 to about 58% of the final formula.
  • the cationic guar gum may be added to the water solution at room temperature or by heating the solution (for example, to a temperature in the range of about 40 to 50 degrees C.), and slowly mixing prior to addition to the surfactant solution.)
  • the surfactant premix may be then diluted into the cationic guar gum/water mixture (Jaguar C-17 (HPTC)/water mix) to yield a mixture which, after completion of forming the final composition, comprises:
  • (b) preferably about 1.8 to about 3.0 weight % and more preferably about 2.04 to about 2.29 weight % of a structuring agent (for example, lauroamphoacetate or cocoamidopropyl betaine);
  • a structuring agent for example, lauroamphoacetate or cocoamidopropyl betaine
  • a foam booster for example, cocomonoethanolamide and more particularly where a portion of the cocmonoethanolamide is added to the surfactant solution by heating the solution to about 40 degrees C., and slowly adding melted cocomonoethanolamide
  • the pH is adjusted to be in a range of about 5.5 ⁇ 1;
  • (b1) preferably about 1 to about 3 weight % and most preferably about 1.5 to about 2.5 weight % of salt is added to the solution (for example, NaCl as added to the formulation dissolved in water as a brine solution (for example, about 25 weight % brine).
  • the solution for example, NaCl as added to the formulation dissolved in water as a brine solution (for example, about 25 weight % brine).
  • (c1) shear is applied to the sample to mix the various components, and to induce the formation of spherulites in the formulation (for example, using a maximum shear rate less than or equal to about 20 sec ⁇ 1 ).
  • an oil phase comprising one or more members selected from the group consisting of vegetable oils (for example, Sunflower Oil and/or Soy Bean Oil) which comprises up to about 15 weight % of the spherulite composition is added to the mixture using simple mixing.
  • the oil phase can be added to the formulation after the spherulites are formed or before the adjustment of the pH and addition of salt to form a stable formula.
  • guar gum for example Jaguar S from Rhodia
  • the Jaguar S may be added to the water phase according to the above method at the same time as the HPTC (Jaguar C-17), followed by thorough mixing until the Jaguar materials are fully hydrated.
  • fragrances include fragrances, antibacterial agents such as triclosan and TCC, antidandruff agents such as climbazole and zinc pyrithione, and other particulates or hydrophobic materials.
  • the above formulation can be made at room temperature, if all of the cocmonoethanolamide is incorporated into the surfactant pre-mix, or at about 40 to about 50 degrees C. if a portion of the cocomonoethanolamide is added to the water phase. If the formulation is made at about 40 to about 50 degrees C., the batch is cooled to room temperature after addition of the Jaguar C-17 and/or Jaguar S materials to facilitate addition of other components.
  • the oil phase may be added after the spherulites are formed, taking advantage of the significant reduction in particle diffusion in the spherulite structured body wash formulas.
  • Table 4 shows that addition of increased amounts of NaCl to the spherulite surfactant system where the oil is added after formation of the spherulites leads to a substantial increase the deposition of the oil phase onto a substrate during washing. This is not observed if the oil is added to the formula before the spherulites are formed.
  • Table 7 is a list of formula components and trade names used in the current examples.
  • values for n, m, etc. in formulas molecular weights and degree of ethoxylation or propoxylation are averages. Temperatures are in degrees C. unless otherwise indicated.
  • the amounts of the components are in weight percents based on the standard described; if no other standard is described then the total weight of the composition is to be inferred.
  • Various names of chemical components include those listed in the CTFA International Cosmetic Ingredient Dictionary (Cosmetics, Toiletry and Fragrance Association, Inc., 7 th ed. 1997).
  • HPTC guar hydroxypropyl trimonium chloride
  • Jaguar C-17 for example, as sold under the name Jaguar C-17 from Rhodia (Cranberry, N.J.)
  • HPTC guar hydroxypropyl trimonium chloride
  • the surfactant pre-mix which contains less than or equal to about 36 weight % sodium trideceth sulfate, less than or equal to about 10 weight % lauroamphoacetate, and less than or equal to about 6 to 11 weight % cocomonoethanolamide in water is selected.
  • This surfactant premix can be obtained from Rhodia, and is similar to a commercial material MIRACARE SLB-365. The exact concentrations of the individual surfactant components can be modified to alter the surfactant concentrations in the final product.
  • the surfactant premix is mixed with the Jaguar C-17 solution to yield a final concentration of the surfactant components as listed in Table 1. The types and amounts of ingredients are listed in Table 1. After the surfactant pre-mix and the water containing HPTC are mixed together, the temperature is increased to 50 degrees C., and the cocomonoethanolamide is added as a melt. The sample is stirred until all the cocomonoethanolamide is completely dispersed. The sunflower oil is then added, followed by mixing, and the formula is cooled to 40 degrees C., at which time a preservative is added. The formula is then cooled to room temperature.
  • an optional ingredient for controlling and building viscosity of the final product is used (a non-cationic guar gum, Jaguar S from Rhodia).
  • the Jaguar S is added to the water phase according to the above method at the same time as the HPTC (Jaguar C-17 material), followed by thorough mixing until the Jaguar materials are fully hydrated and dispersed.
  • the Jaguar S and Jaguar C-17 materials are added to the water solution by heating the solution to between 40 to 50 degrees C. (which was done in the Examples but is not necessarily required), and slowly mixing prior to addition to the surfactant solution to enhance dissolution and hydration.
  • the formulation can be made either at room temperature, if all of the cocmonoethanolamide is incorporated into the surfactant pre-mix, or between 40 and 50 degrees C. if a portion of the cocomonoethanolamide is added to the water phase.) If the formulation is made at between 40 and 50 degrees C., the batch is cooled to room temperature after addition of the Jaguar C-17 and/or Jaguar S materials to facilitate the addition of other components.
  • Example 1A the oil was added before the spherulites were formed.
  • the remainder of the Examples has the addition order noted in the Tables.
  • the oil phase should be added after the spherulites are formed, taking advantage of the significant reduction in particle diffusion in the spherulite structured body wash formulas.
  • One particular method for making an oil in water emulsion is as follows. A primary phase of water is heated to 80 degrees C., and the hydroxypropylmethyl cellulose (available from Dow Chemical as METHOCEL® E4Ma) is added and mixed until fully dispersed. The decyl glucoside is then add and mixed completely. A second phase is formed by heating the sunflower oil to between 60 and 65 C, to which the acrylate crosspolymer (available as PEMULEN® TR1 from Noveon) is added, followed by dispersal with vigorous mixing. The second phase is then cooled to 60 degrees C., and the lauric acid is added. The second phase is then stirred for 30 minutes.
  • FIG. 2 shows that the viscosity of the spherulite based shower gel can be significantly modified by the incorporation of small concentrations of guar gums such as Jaguar S and Jaguar C17 materials from (Rhodia). TABLE 6 Compositions for addition of Jaguar S guar gum to spherulite shower gel formulas containing sunflower oil identified in FIG. 2 .
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US10966916B2 (en) 2014-11-10 2021-04-06 The Procter And Gamble Company Personal care compositions
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US11185486B2 (en) 2016-10-21 2021-11-30 The Procter And Gamble Company Personal cleansing compositions and methods
US10987290B2 (en) 2017-10-20 2021-04-27 The Procter And Gamble Company Aerosol foam skin cleanser
US11419805B2 (en) 2017-10-20 2022-08-23 The Procter & Gamble Company Aerosol foam skin cleanser
US10942107B2 (en) 2017-12-08 2021-03-09 The Procter & Gamble Company Methods of screening for mild skin cleanser
US11365397B2 (en) 2018-11-29 2022-06-21 The Procter & Gamble Company Methods for screening personal care products

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US7749951B2 (en) 2010-07-06
DE602005026135D1 (de) 2011-03-10
EP1786388B2 (en) 2018-11-28
CN101039651A (zh) 2007-09-19
AU2005277461A1 (en) 2006-03-02
BRPI0514487A (pt) 2008-06-17
KR20070057836A (ko) 2007-06-07

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