WO1990011343A1 - Self-foaming oil compositions and process for making and using same - Google Patents

Self-foaming oil compositions and process for making and using same Download PDF

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Publication number
WO1990011343A1
WO1990011343A1 PCT/US1990/001471 US9001471W WO9011343A1 WO 1990011343 A1 WO1990011343 A1 WO 1990011343A1 US 9001471 W US9001471 W US 9001471W WO 9011343 A1 WO9011343 A1 WO 9011343A1
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WO
WIPO (PCT)
Prior art keywords
oil
foam
weight
composition
foaming
Prior art date
Application number
PCT/US1990/001471
Other languages
French (fr)
Inventor
Mohan Vishnupad
Jose E. Ramirez
Original Assignee
Imaginative Research Associates, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US07/326,377 external-priority patent/US5186857A/en
Application filed by Imaginative Research Associates, Inc. filed Critical Imaginative Research Associates, Inc.
Publication of WO1990011343A1 publication Critical patent/WO1990011343A1/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00Preparations for care of the hair
    • A61Q5/006Antidandruff preparations
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/02Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04Dispersions; Emulsions
    • A61K8/046Aerosols; Foams
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/02Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04Dispersions; Emulsions
    • A61K8/06Emulsions
    • A61K8/062Oil-in-water emulsions
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/10Dispersions; Emulsions
    • A61K9/12Aerosols; Foams
    • A61K9/122Foams; Dry foams
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00Preparations for care of the skin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00Preparations for care of the skin
    • A61Q19/10Washing or bathing preparations
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00Preparations for care of the hair
    • A61Q5/02Preparations for cleaning the hair
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q9/00Preparations for removing hair or for aiding hair removal
    • A61Q9/02Shaving preparations
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q9/00Preparations for removing hair or for aiding hair removal
    • A61Q9/04Depilatories
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0008Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
    • C11D17/003Colloidal solutions, e.g. gels; Thixotropic solutions or pastes
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/0005Other compounding ingredients characterised by their effect
    • C11D3/0094High foaming compositions
    • CCHEMISTRY; METALLURGY
    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16Organic compounds
    • C11D3/18Hydrocarbons

Definitions

  • Liquid compositions containing oils and/or soluble waxes are well known for a variety of uses, such as cosmetic lotions, medicinal lotions, furniture polishes, cleansers for tile, glass, metal, etc. Some such compositions contain soaps and/or detergents to enable them to entrap air and produce a foam or lather during use. However if high levels of oil or oil/wax mixture are added to such aqueous compositions, the foam- or lather-producing properties of the compositions are substantially reduced. Therefore aqueous liquid compositions, capable of being poured from a non-pressurized container to form a foam-producing coating, have not been available with oil or oil/wax contents greater than about 4% or 5% by weight. Such low contents are not satisfactory where the purpose of the product is to apply coatings which are high in oil or oil/wax content.
  • Aerosol compositions containing oil and/or oil/wax ingredients and water are also well known but such compositions must be dispensed as a foam from a pressurized container and cannot be contained as a self-foaming lotion-like liquid in a non-pressurized container.
  • U.S. Patent 4,726,944 to provide self-foaming or post foaming aqueous liquid detergent compositions which are capable of being poured from a non-pressurized container and rubbed into the hair as a post-foaming shampoo.
  • Such compositions contain mixtures of anionic, amphoteric and non-ionic surfactants; water-soluble gum and a volatile hydrocarbon, and foaming occurs by evaporation of the latter as the composition is applied to the hair.
  • U.S. Patent 4,744,979 relates to similar post-foaming shaving gel compositions containing an aqueous soap solution and a mixture of surface active agents comprising amine oxides and alkanolamides.
  • lotion-like post-foaming compositions of the aforementioned types intended for the cleansing of wet or dry surfaces that contain no oil or small amounts thereof are capable of being poured as clear liquid solutions from a non-pressurized container, they function well for their intended purposes only at temperatures close to room temperature, 70-80°F. It has not been possible heretofore to produce lotion-like post-foaming compositions of these types which are detergent-based and are used for cleansing which contain large amounts of oil or oil/wax mixture for purposes of applying oil or oil/wax coatings to the skin or other wet or dry surfaces for cosmetic, medicinal, aesthetic, protective, household, automotive or other purposes. In addition, such lotion-like post-foaming compositions show a markedly increased solubility of the volatile hydrocarbon component. This property allows the non-pressurized containers to be opened at much higher temperatures, i.e., 110-120°F.
  • the present invention relates to the discovery of formulations for aqueous, lotion-like compositions which contain large amounts of dispersed oil or oil/wax mixture, greater than about 5% by weight, a volatile organic foam-producing liquid and a surfactant or detergent which increases the solubility of the foam-producing liquid in the oil or oil/wax mixture, optional additional foam suppressing agents depending on the surfactant or surfactants used, the surfactant or detergent comprising the discontinuous phase of the composition, the continuous phase comprising water.
  • composition can be poured onto a preferably wet surface and spread as a creamy lotion coating which forms a uniform fine foam within a few seconds under ambient exposure, due to the evaporation of the volatile organic foam-producing liquid, to leave an oil or oil/wax foam residue which can be rubbed over the skin or other surface for cosmetic, medicinal, aesthetic, protective, cleansing or other purposes.
  • the presence of the oil or oil/wax on the skin during the foaming action permits the oil or oil/wax mixture, and any medicaments, emollients or other additives dissolved therein or present in the water phase to penetrate the skin and displace moisture, moisture-soluble dirt skin oils or infected matter which may be withdrawn from the skin during the foaming process, for increased effectiveness in softening and treating the skin.
  • compositions of the present invention are aqueous emulsions including pseudo emulsions and other aqueous dispersions which can be agitated within the container, prior to use, to form lotion-like liquids containing oil or oil/wax mixture dispersed within the continuous water phase.
  • compositions contain at least about 5% by weight of one or more oils, alone or in combination with one or more waxes soluble in or compatible with said oil(s), at least about 5% by weight of at least one suitable surface active agent or detergent, at least about 5% by weight of at least one volatile organic foam-producing liquid, optionally one or more foam-suppressing compounds in the amount of 2-15% by weight, and the remainder, generally less than about 60%, water.
  • the ingredient of the present compositions that enables the presence of large amounts of oil or oil/wax mixtures is the surface active agent or detergent.
  • This material preferably is present in an amount within the range of from about 5% to about 20% by weight, and preferably from 10% to about 15% by weight, to enable the incorporation of from about 5% to about 60% by weight of the oil or oil/wax mixture, preferably from 20% to about 35% by weight of said oil or oil/wax mixture.
  • compositions of the present compositions from the standpoint of increasing the solubility of the volatile hydrocarbon are both the oil and surface active agent. Their combination enables the incorporation of about 15% volatile hydrocarbons, increasing their solubility to the point that the compositions of the invention can be opened to the atmosphere at temperatures much higher than room temperature.
  • foam-supressing compounds also increases the solubility of the volatile hydrocarbon component.
  • Some surfactants by their nature do not need the addition of foam-suppressing agents, while other surfactants are not suitable for commercial utilization without them.
  • the most preferred mild surfactants that do not need foam suppressing agents are anionic materials such as sodium methyl cocoyl taurate (sodium salts of N-methyl taurine-coconut oil amides, referred to herein as SMCT) ; disodium cocamido monoisopropanol amide sulfosuccinate (disodium salts of sulfo-2-cocamide-l-methyl ethyl esters of butanedioic acid, referred to herein as DCMS) ; sodium lauryl sulfoacetate (sodium salt of sulfo-1-dodecyl ester of acetic acid, referred to herein as SLSA) ; dioctyl sodium sulfosuccinate (sodium salt of the diester of 2-ethylhexyl alcohol and sulfosuccinic acid, referred to herein as DSS) , and amphoteric materials such as coca
  • foam-suppressing compounds preferably in amounts between about 3% and 7% by weight where necessary, in combination with highly foaming surfactants allows the use of a greater variety of surfactants which, per se, are not useful for the preparation of suitable commercial products.
  • Combinations of this type can be obtained by adding alcohols, alkoxy alcohols, etc. to surfactants like sodium lauryl sulfate, referred to herein as SLS, ammonium lauryl ether sulfate, referred to herein as ALS, and many other surfactants generally of the anionic type.
  • a similar foam-controlling effect can be obtained by blending high foaming surfactants, generally of the anionic type, with low foaming surfactants.
  • the preferred low foaming surfactants used for this foam controlling effect are generally of the non-ionic and the amphoteric type. Typical of these are nonoxinol-9 (nonionic) and cocampho-carboxyl glycinate (amphoteric) , referred to herein as CCG.
  • Suitable oils for use in the compositions of the present invention include all of the conventional water-insoluble liquid or semi-solid mineral (including mixtures of petroleum derived hydrocarbons containing 10 or more carbon atoms) , vegetable, synthetic and animal oils, including fatty acid esters, lanolin, etc.
  • the particular oils selected for a particular composition will depend upon its desired function and/or its ability to dissolve additives such as fragrances, waxes, medicaments, etc.
  • Suitable waxes include semi-solid and solid vegetable, mineral, animal and synthetic waxes, present in amounts which are soluble in the oils present to form liquid oil/wax mixtures.
  • the preferred volatile organic foam-producing liquids are those having a vapor pressure from about 4 to 14 p.s.i.g. at temperatures between about 90° - 100°F, most preferably hydrocarbons having 5 or 6 carbon atoms such as isopentane, pentane and hexane.
  • the volatile organic liquid is present in an amount between about 5% and 15% by weight, preferably between 7% and 12% by weight.
  • the preferred foam suppressing agents are alcohols, alkoxy alcohols, low foaming surfactants and any other suitable compounds that help prevent the compositions of the invention from self-dispensing at temperatures well in excess of room temperature.
  • the final essential ingredient of the present compositions is water, which is present as an oil-in-water emulsion or dispersion to form the continuous phase of the self-foaming composition.
  • water is present in an amount between about 25% and 60% by weight of the composition, most preferably between about 35% and 45% by weight.
  • compositions thereof are produced by adding the oils or oil/wax mixtures to a suitable container, adding the surface active agents or detergents thereto and homogenizing at a suitable elevated temperature until the detergents are thoroughly dispersed in the oil or oil/wax phase, water being added while homogenizing.
  • the mixture is cooled to room temperature or lower and the volatile organic foam-producing liquid, cooled below its boiling point, is added while the composition is stirred with a mixer.
  • any additives are initially incorporated with the oils or oil/wax mixtures in the first step.
  • Example 14 Ingredients Wt%
  • Example 17 Ingredients Wt%
  • Example 24 Ingredients Wt%
  • Example 28 Ingredients WM
  • compositions being compared are identical in every . respect except by substitution of identical amounts of total surfactant.
  • the compositions of Example 1, 3, 7, 17 and 24 were compared with the non-functional compositions of examples 27, 28, 29, 30 and 31.
  • Each of the compositions was placed in an individual 100ml graduated cylinder, 10 ml of water was added to lOg of each composition, and the cylinder was closed and shaken vigorously ten times.
  • the initial and final volumes of the foam were recorded as 1 (0 ml increase), 3 (27 ml increase), 7 (0 ml increase), 17 (0 ml increase) , 24 (24 ml increase) , 27 (55 ml increase) , 28 (59 ml increase) , 29 (8 ml increase) , 30 (5 ml increase) and 31 (28 ml increase) .
  • the preferred compositions, Examples 1, 7 and 17, showed no tendency to foam in the sealed container under agitation, establishing the solubilizing effect on the volatile organic liquid and its suppression against escape and foaming within the container, whereby the compositions have excellent post-foaming properties after being poured onto the wet skin and scrubbed for cleansing action.
  • the compositions of Example 3 an 24 foamed somewhat but still solublized the volatile organic liquid within the oil to a sufficient extent that the composition has excellent post-foaming properties similar to those of Examples 1, 7 and 17.
  • compositions of examples 1, 3, 7, 17 and 24 when opened at temperatures much higher than room temperature, e.g. from 110 to 120°F, will not self-dispense.
  • the compositions of Examples 27 and 28 foamed excessively and self-dispensed from the container even at room temperature, although they do post-foam because the volatile liquid hydrocarbon is solublized somewhat in the oil phase but only to an unsatisfactory extent.
  • compositions of Examples 29, 30 and 31 while they showed little or no tendency to foam when agitated in the sealed container, they were non-functional when poured onto the skin and spread in the same manner as the other compositions since they do not self-foam or post-foam to any useful extent.
  • foam suppressing components in combination with highly foaming surfactants allows the preparation of suitable commercial products.
  • Preparations of this type can be obtained by adding alcohols, alkoxy alcohols, etc. to the highly foaming surfactant of Examples 27.
  • the compositions of Examples 20 and 21 show limited foam increase in the sealed container under agitation, i.e., composition 20 (23 ml increase) and composition 21 (15 ml increase) . This establishes the solubilizing effect on the volatile organic liquid and its suppression against escape and foaming within the container.
  • a similar foam-controlling effect can be obtained by blending high foaming surfactants generally of the anionic type with low foaming surfactants generally the non-ionic and amphoteric types.
  • the surfactants of the unsatisfactory compositions of Examples 29 and 31 are modified to prepare suitable commercial products by adding the low foaming surfactants of the compositions to provide additional foam-controlling effect.
  • the foaming values of composition 22 (23 ml increase) and compositions 23 (25 ml increase) illustrate the effect of the low foaming surfactants on compositions containing SLS which, by its chemical nature, will foam uncontrollably when used alone and will produce compositions which self-dispense at room temperature.
  • compositions of Examples 20, 21, 22 and 23 contain foam suppressants and demonstrate controlled foaming and will not self-dispense at temperatures from 110-120°F. All these compositions are functional when poured onto the skin and spread in the same manner as the compositions of examples 1, 3, 7, 17 and 24 since they do foam and post-foam to a useful extent.

Abstract

The present invention relates to liquid, lotion-like aqueous oil-in-water emulsion compositions containing large amounts of oil or oil/wax mixtures, a volatile organic foam-producing liquid, and a mixture of foam suppressing agent(s) and surface active agent(s) which increase the solubility of the foam-producing liquid in the oil or oil/wax mixture. The present compositions are emulsions which do not foam or self-dispense from a non-pressurized container at temperatures up to 120°F, and can be poured onto a wet surface at room temperatures and spread to form a thin layer which will post foam under ambient conditions to leave a residue of the oil or oil/wax mixture for cosmetic, medicinal, aesthetic, protective or other purposes. The invention includes the methods for making and using the present emulsions.

Description

Self-Foaming Oil Compositions and Process for Making and Using Same
Background of the Invention
Liquid compositions containing oils and/or soluble waxes are well known for a variety of uses, such as cosmetic lotions, medicinal lotions, furniture polishes, cleansers for tile, glass, metal, etc. Some such compositions contain soaps and/or detergents to enable them to entrap air and produce a foam or lather during use. However if high levels of oil or oil/wax mixture are added to such aqueous compositions, the foam- or lather-producing properties of the compositions are substantially reduced. Therefore aqueous liquid compositions, capable of being poured from a non-pressurized container to form a foam-producing coating, have not been available with oil or oil/wax contents greater than about 4% or 5% by weight. Such low contents are not satisfactory where the purpose of the product is to apply coatings which are high in oil or oil/wax content.
Aerosol compositions containing oil and/or oil/wax ingredients and water are also well known but such compositions must be dispensed as a foam from a pressurized container and cannot be contained as a self-foaming lotion-like liquid in a non-pressurized container. Reference is made to U.S. Patents 2,655,480 and 3,705,855 for their disclosure of such aerosol compositions. It is also known to provide aerosol soap and detergent compositions which dispense as a single phase gel capable of being spread over the skin as a self-foaming coating, and reference is made to U.S. Patents 3,541,581, 4,505,489 and 4,772,427 for their disclosure of such compositions.
Finally, it is known from U.S. Patent 4,726,944 to provide self-foaming or post foaming aqueous liquid detergent compositions which are capable of being poured from a non-pressurized container and rubbed into the hair as a post-foaming shampoo. Such compositions contain mixtures of anionic, amphoteric and non-ionic surfactants; water-soluble gum and a volatile hydrocarbon, and foaming occurs by evaporation of the latter as the composition is applied to the hair. U.S. Patent 4,744,979 relates to similar post-foaming shaving gel compositions containing an aqueous soap solution and a mixture of surface active agents comprising amine oxides and alkanolamides.
While self-foaming or post-foaming compositions of the aforementioned types intended for the cleansing of wet or dry surfaces that contain no oil or small amounts thereof are capable of being poured as clear liquid solutions from a non-pressurized container, they function well for their intended purposes only at temperatures close to room temperature, 70-80°F. It has not been possible heretofore to produce lotion-like post-foaming compositions of these types which are detergent-based and are used for cleansing which contain large amounts of oil or oil/wax mixture for purposes of applying oil or oil/wax coatings to the skin or other wet or dry surfaces for cosmetic, medicinal, aesthetic, protective, household, automotive or other purposes. In addition, such lotion-like post-foaming compositions show a markedly increased solubility of the volatile hydrocarbon component. This property allows the non-pressurized containers to be opened at much higher temperatures, i.e., 110-120°F.
Summary of the Invention
The present invention relates to the discovery of formulations for aqueous, lotion-like compositions which contain large amounts of dispersed oil or oil/wax mixture, greater than about 5% by weight, a volatile organic foam-producing liquid and a surfactant or detergent which increases the solubility of the foam-producing liquid in the oil or oil/wax mixture, optional additional foam suppressing agents depending on the surfactant or surfactants used, the surfactant or detergent comprising the discontinuous phase of the composition, the continuous phase comprising water. This allows the presence of large amounts of the oil or oil/wax mixture without any interference with the foam-forming ability of the foam-producing liquid, whereby the composition can be poured onto a preferably wet surface and spread as a creamy lotion coating which forms a uniform fine foam within a few seconds under ambient exposure, due to the evaporation of the volatile organic foam-producing liquid, to leave an oil or oil/wax foam residue which can be rubbed over the skin or other surface for cosmetic, medicinal, aesthetic, protective, cleansing or other purposes. The presence of the oil or oil/wax on the skin during the foaming action permits the oil or oil/wax mixture, and any medicaments, emollients or other additives dissolved therein or present in the water phase to penetrate the skin and displace moisture, moisture-soluble dirt skin oils or infected matter which may be withdrawn from the skin during the foaming process, for increased effectiveness in softening and treating the skin.
The preferred compositions of the present invention are aqueous emulsions including pseudo emulsions and other aqueous dispersions which can be agitated within the container, prior to use, to form lotion-like liquids containing oil or oil/wax mixture dispersed within the continuous water phase.
Detailed Description
The present compositions contain at least about 5% by weight of one or more oils, alone or in combination with one or more waxes soluble in or compatible with said oil(s), at least about 5% by weight of at least one suitable surface active agent or detergent, at least about 5% by weight of at least one volatile organic foam-producing liquid, optionally one or more foam-suppressing compounds in the amount of 2-15% by weight, and the remainder, generally less than about 60%, water.
The ingredient of the present compositions that enables the presence of large amounts of oil or oil/wax mixtures, is the surface active agent or detergent. This material preferably is present in an amount within the range of from about 5% to about 20% by weight, and preferably from 10% to about 15% by weight, to enable the incorporation of from about 5% to about 60% by weight of the oil or oil/wax mixture, preferably from 20% to about 35% by weight of said oil or oil/wax mixture.
The most critical ingredients of the present compositions from the standpoint of increasing the solubility of the volatile hydrocarbon are both the oil and surface active agent. Their combination enables the incorporation of about 15% volatile hydrocarbons, increasing their solubility to the point that the compositions of the invention can be opened to the atmosphere at temperatures much higher than room temperature.
The addition of foam-supressing compounds also increases the solubility of the volatile hydrocarbon component. Some surfactants by their nature do not need the addition of foam-suppressing agents, while other surfactants are not suitable for commercial utilization without them.
The most preferred mild surfactants that do not need foam suppressing agents are anionic materials such as sodium methyl cocoyl taurate (sodium salts of N-methyl taurine-coconut oil amides, referred to herein as SMCT) ; disodium cocamido monoisopropanol amide sulfosuccinate (disodium salts of sulfo-2-cocamide-l-methyl ethyl esters of butanedioic acid, referred to herein as DCMS) ; sodium lauryl sulfoacetate (sodium salt of sulfo-1-dodecyl ester of acetic acid, referred to herein as SLSA) ; dioctyl sodium sulfosuccinate (sodium salt of the diester of 2-ethylhexyl alcohol and sulfosuccinic acid, referred to herein as DSS) , and amphoteric materials such as cocamidopropyl hydroxy sultaine, referred to herein as CHS, and combinatons of such detergents with each other or with small amounts of other foam-boosting surfactants.
The inclusion of foam-suppressing compounds, preferably in amounts between about 3% and 7% by weight where necessary, in combination with highly foaming surfactants allows the use of a greater variety of surfactants which, per se, are not useful for the preparation of suitable commercial products. Combinations of this type can be obtained by adding alcohols, alkoxy alcohols, etc. to surfactants like sodium lauryl sulfate, referred to herein as SLS, ammonium lauryl ether sulfate, referred to herein as ALS, and many other surfactants generally of the anionic type. A similar foam-controlling effect can be obtained by blending high foaming surfactants, generally of the anionic type, with low foaming surfactants. The preferred low foaming surfactants used for this foam controlling effect are generally of the non-ionic and the amphoteric type. Typical of these are nonoxinol-9 (nonionic) and cocampho-carboxyl glycinate (amphoteric) , referred to herein as CCG.
Suitable oils for use in the compositions of the present invention include all of the conventional water-insoluble liquid or semi-solid mineral (including mixtures of petroleum derived hydrocarbons containing 10 or more carbon atoms) , vegetable, synthetic and animal oils, including fatty acid esters, lanolin, etc. The particular oils selected for a particular composition will depend upon its desired function and/or its ability to dissolve additives such as fragrances, waxes, medicaments, etc. Suitable waxes include semi-solid and solid vegetable, mineral, animal and synthetic waxes, present in amounts which are soluble in the oils present to form liquid oil/wax mixtures.
The preferred volatile organic foam-producing liquids are those having a vapor pressure from about 4 to 14 p.s.i.g. at temperatures between about 90° - 100°F, most preferably hydrocarbons having 5 or 6 carbon atoms such as isopentane, pentane and hexane. The volatile organic liquid is present in an amount between about 5% and 15% by weight, preferably between 7% and 12% by weight.
The preferred foam suppressing agents are alcohols, alkoxy alcohols, low foaming surfactants and any other suitable compounds that help prevent the compositions of the invention from self-dispensing at temperatures well in excess of room temperature.
The final essential ingredient of the present compositions is water, which is present as an oil-in-water emulsion or dispersion to form the continuous phase of the self-foaming composition. Generally the water is present in an amount between about 25% and 60% by weight of the composition, most preferably between about 35% and 45% by weight.
Other ingredients generally are present in minor amounts, less than 10% by weight and usually less than about 2% by weight. Such additives should be soluble in or miscible with either the oils or oil/wax mixtures or in the water and include perfumes or fragrances, emollients, humectants, medicaments, colorants, etc. The following examples are illustrative of several compositions within the scope of the present invention and should not be considered limitative. The compositions thereof are produced by adding the oils or oil/wax mixtures to a suitable container, adding the surface active agents or detergents thereto and homogenizing at a suitable elevated temperature until the detergents are thoroughly dispersed in the oil or oil/wax phase, water being added while homogenizing. Finally the mixture is cooled to room temperature or lower and the volatile organic foam-producing liquid, cooled below its boiling point, is added while the composition is stirred with a mixer. Generally any additives are initially incorporated with the oils or oil/wax mixtures in the first step.
Example 1
Ingredients Wt%
Mineral Oil 35.0
DCMS 15.0
Water 40.0
Pentane 10.0
Example 2
Ingredients Wt%
Mineral Oil 35.0
DCMS 13.0 Sodium Lauryl Sulfate 2.0
Fragrance 0.5
Water 39.5
Isopentane 10.0
Example 3
Ingredients Wt%
Mineral Oil 35.0
SMCT 15.o
Water 40.0
Pentane 10.0
Example 4
Ingredients Wt%
Mineral Oil 35.0
DCMS 20.0
Water 35.0
Pentane 10.0
Example 5
Ingredients Wt%
Mineral Oil 35.0
DCMS 5.0
Water 50.0
Pentane 10.0
Example 6
Ingredients Wt%
Petroleum Jelly 15.0
Mineral Oil 10.0
Isopropyl Palmitate 10.0
DCMS 12.0
SLS 3.0
Water 39.5
Fragrance 0.5
Isopentane 10.0
Example 7
Ingredients wt%
Mineral Oil 35.0
SLSA 5.0
Water 50.0
Isopentane 10.0 Example 8 (Shaving Preparation) Ingredients Wt%
Mineral Oil 15
Isopropyl Palmitate 8
Glycerine 10
DCMS 13
SLS 2
Palmitic Acid 2
Water 40
Isopentane 10
NaOH to adjust to pH 8.5
Example 9 (Antidandruff cleanser)
Ingredient Wt%
Mineral Oil 35.0
DCMS 15.0
Omadine MDS (MgS04 adduct) 1.0
Water 39.0
Isopentane 10.0
Example 10 (Psoriatic Skin Cleanser)
Ingredient Wt%
Petroleum Jelly 10.0
Mineral Oil 20.0
DCMS 15.0 Coal Tar Aqueous Soln. 5.0
Water 40.0
Isopentane 10.0 Example 11 (Auto Cleaner/Polish) Ingredient Wt%
Carnauba Wax 17.5
Mineral Oil 17.5
DCMS 9.0
SLS 1.0
Water 45.0
Isopentane 10.0
Example 12 (Fabric Cleaner)
Ingredient Wt%
Deodorized Kerosene 35.0
DCMS 15.0
Water 45.0
Pentane 5.0
Example 13 (Cosmetic Cleanser) Ingredient Wt'
Lanolin 10.0
Acetulan (acetylated lanolin) 25.0
DCMS 13.0
SLS 2.0
Water 40.0
Isopentane 10.0
Example 14 Ingredients Wt%
DCMS 15.0
Mineral Oil 60.0 Water 15.0 Isopentane 10.0
Example 15 Ingredients Wtl
DCMS 5.0
Mineral Oil 35.0 Water 50.0 Isopentane 10.0
Example 16 Ingredients Wt
SCT 15.0
Mineral Oil 10.0 Water 65.0 Isopentane 10.0
Example 17 Ingredients Wt%
DSS 15.0
Mineral Oil 35.0 Water 40.0 Isopentane 10.0 Example 18
Ingredients Wt%
DCMS 12.0
SLS 3.0
Mineral Oil 20.0
Petroleum Jelly 12.5
Polyethyleneglycol-8
Dilaurate 2.5
Water 39.5
Fragrance 0.5
Hexane 10.0
Example 19 (Depilatory Lotion)
Ingredients Wt%
DCMS 15.0
Mineral Oil 35.0
Water 34.0
Calcium Thioglycolate 6.0
Isopentane 10.0
Example 20
Ingredients Wt%
SLS 15.0
Mineral Oil 30.0
Water 40.0
Ethyleneglycol n-Butyl ether 5.0
Pentane 10.0
Example 21
Ingredients Wt%
SLS 15.0
Mineral Oil 35.0
Water 32.5
Ethanol 7.5
Pentane 10.0
Example 22
Ingredients Wt%
SLS 7.5
Cocampho-carboxyl 7.5 glycinate (CCG)
Mineral Oil 35.0
Water 40.0
Pentane 10.0 Example 23 Ingredients Wt%
SLS 7.5
Nonoxinol-9 7.5 Mineral Oil 35.0 Water 40.0 Pentane 10.0
Example 24 Ingredients Wt%
CHS 15.0
Mineral Oil 35.0 Water 40.0 Pentane 10.0
Example 25 (surgical scrub) Ingredients Wt'
CHS 15.0
Chlorhexidine gluconate 4.0
Capramide DEA 2.0
Polyquaternium-7 0.2
Mineral Oil 18.0
Petroleum Jelly 12.0
Fragrance 0.3
Water 38.5
Pentane 10.0 Example 26 (acne cleanser) Ingredients Wt%
DCMS 12.0
ALS 3.0
Polyquaternium-7 0.2
Mineral Oil 30.0
Benzoyl Peroxide 5.0
Glycerine 5.0
Water 34.5
Fragrance 0.3
Pentane 10.0
T.he fol ilowing Examples 27 to 31 illustrate non-functional comparative compositions:
Example 27
Ingredients Wt%
Sodium Lauryl
Sulfate (SLS) 15.0
Mineral Oil 35.0
Water 40.0
Pentane 10.0
Example 28 Ingredients WM
Ammonium Lauryl Ether
Sulfate (ALS) 15.0
Mineral Oil 35.0
Water 40.0
Pentane 10.0
Example 29
Ingredients wt%
Nonoxinol-9 15.0
Mineral Oil 3.5.0
Water 40.0
Pentane 10.0
Example 30
Ingredients wt%
Dimethyl-1-Naphthyl
Methyl Ammonium
Chloride 15.0
Mineral Oil 35.0
Water 40.0
Pentane 10.0
Example 31
Ingredients Wt%
CCG 15.0
Mineral Oil 35.0
Water 40.0
Pentane 10.0
In order to establish the critical nature of the components of the present compositions we have compared examples of the preferred surfactants with other surfactants considered non-functional by themselves for the purpose of this invention. The compositions being compared are identical in every . respect except by substitution of identical amounts of total surfactant. The compositions of Example 1, 3, 7, 17 and 24 were compared with the non-functional compositions of examples 27, 28, 29, 30 and 31. Each of the compositions was placed in an individual 100ml graduated cylinder, 10 ml of water was added to lOg of each composition, and the cylinder was closed and shaken vigorously ten times. The initial and final volumes of the foam were recorded as 1 (0 ml increase), 3 (27 ml increase), 7 (0 ml increase), 17 (0 ml increase) , 24 (24 ml increase) , 27 (55 ml increase) , 28 (59 ml increase) , 29 (8 ml increase) , 30 (5 ml increase) and 31 (28 ml increase) . The preferred compositions, Examples 1, 7 and 17, showed no tendency to foam in the sealed container under agitation, establishing the solubilizing effect on the volatile organic liquid and its suppression against escape and foaming within the container, whereby the compositions have excellent post-foaming properties after being poured onto the wet skin and scrubbed for cleansing action. The compositions of Example 3 an 24 foamed somewhat but still solublized the volatile organic liquid within the oil to a sufficient extent that the composition has excellent post-foaming properties similar to those of Examples 1, 7 and 17.
The compositions of examples 1, 3, 7, 17 and 24 when opened at temperatures much higher than room temperature, e.g. from 110 to 120°F, will not self-dispense. The compositions of Examples 27 and 28 foamed excessively and self-dispensed from the container even at room temperature, although they do post-foam because the volatile liquid hydrocarbon is solublized somewhat in the oil phase but only to an unsatisfactory extent.
The compositions of Examples 29, 30 and 31 while they showed little or no tendency to foam when agitated in the sealed container, they were non-functional when poured onto the skin and spread in the same manner as the other compositions since they do not self-foam or post-foam to any useful extent.
The inclusion of foam suppressing components in combination with highly foaming surfactants allows the preparation of suitable commercial products. Preparations of this type can be obtained by adding alcohols, alkoxy alcohols, etc. to the highly foaming surfactant of Examples 27. For example, the compositions of Examples 20 and 21 show limited foam increase in the sealed container under agitation, i.e., composition 20 (23 ml increase) and composition 21 (15 ml increase) . This establishes the solubilizing effect on the volatile organic liquid and its suppression against escape and foaming within the container.
A similar foam-controlling effect can be obtained by blending high foaming surfactants generally of the anionic type with low foaming surfactants generally the non-ionic and amphoteric types. Thus, in Examples 22 and 23 the surfactants of the unsatisfactory compositions of Examples 29 and 31 are modified to prepare suitable commercial products by adding the low foaming surfactants of the compositions to provide additional foam-controlling effect. The foaming values of composition 22 (23 ml increase) and compositions 23 (25 ml increase) illustrate the effect of the low foaming surfactants on compositions containing SLS which, by its chemical nature, will foam uncontrollably when used alone and will produce compositions which self-dispense at room temperature. The compositions of Examples 20, 21, 22 and 23 contain foam suppressants and demonstrate controlled foaming and will not self-dispense at temperatures from 110-120°F. All these compositions are functional when poured onto the skin and spread in the same manner as the compositions of examples 1, 3, 7, 17 and 24 since they do foam and post-foam to a useful extent.
Therefore it will be apparent to those skilled in the art that the various classes of oils or oil/wax mixtures, specific ones of which are illustrated by the various examples set forth herein, can be incorporated in large amounts in self-foaming compositions capable of being contained within non-aerosol, non-pressurized containers, preferably small-mouth rigid containers, which compositions can be poured onto the skin or other surface and rubbed or spread in the same manner as a conventional lotion and will self-generate a copious foam on the wet skin or other wet surfaces in a few seconds time. The foaming operation results from the evaporation of the organic foam-producing liquid to leave an oily foam residue which can be rubbed into the skin or over a wooden, metallic, plastic or other surface for cleaning, medication, polishing, waxing or other purposes.
It is to be understood that the above described embodiments of the invention are illustrative only and that modifications throughout may occur to those skilled in the art. Accordingly, this invention is not to be regarded as limited to the embodiments disclosed herein but is to be limited as defined by the appended claims.

Claims

CLAIMSWhat is claimed is:
1. Aqueous, lotion-like, flowable liquid emulsion composition, containing large amounts of oil or oil/wax mixture, which is capable of being contained within a non-pressurized container without self-foaming therefrom at temperatures up to about 120°F, and capable of being poured onto a surface at room temperatures and spread as a thin layer to self-develop a copious foam, said composition comprising an aqueous emulsion having a continuous aqueous phase and a discontinuous phase comprising at least about 10% by weight of said composition of at least one oil or oil/wax mixture, at least about 5% by weight of said composition of at least one volatile organic foam-producing liquid which has an evaporation temperature at or slightly above ambient room temperature, and a foam-controlling mixture comprising (a) at least about 5% by weight of said composition of at least one high foaming surface active agent which increases the solubility of said foam-producing liquid in said oil or oil/wax mixture of said discontinuous phase to an insufficient degree to prevent self foaming at 120 F, and (b) one or more foam suppressing agents which cooperate with said high foaming surface active agent(s) to cause said foam-producing liquid to be solubilized in said oil or oil/wax mixture to prevent the composition from self-foaming from an open container at temperatures up to about 120 F, the balance of said composition comprising water as the continuous phase.
2. A composition according to Claim 1 comprising from about 10% to 60% by weight of said oil or oil/wax mixture, from about 5% to 20% by weight of said high foaming surface active agent, from about 5% to 15% by weight of said volatile organic liquid, from about 2% to 15% by weight of said foam-suppressing agent and from about 30% to 60% by weight of water.
3. A composition according to Claim 1 comprising from about 20% to 35% by weight of said oil or oil/wax mixture, from about 10% to 15% by weight of said surface active agent, from about 7% to 12% by weight of said volatile organic liquid, from about 3 to 7% by weight of said foam-suppressing agent and from about 35% to 45% by weight of water.
4. A composition according to Claim 1 in which said foam-suppressing agent comprises a low foaming surface active agent which does not produce a self foaming composition in the absence of said high foaming surface active agent.
5. A composition according to Claim 1 in which said foam-suppressing agent comprises an aliphatic alcohol or alkoxy aliphatic alcohol.
6. A composition according to Claim 1 in which said volatile organic liquid is one having a vapor pressure from about 4 to 14 p.s.i.g. at a temperature between 90° and 100°F.
7. A composition according to Claim 5 in which said volatile organic liquid comprises pentane, isopentane or hexane.
8. A composition according to Claim 1 in which said oil comprises mineral oil or a mineral oil/petroleum jelly mixture.
9. A composition according to Claim 1 further containing minor amounts of one or more oil-soluble or water-soluble additives for imparting fragrance, emollient, cosmetic, medication, humectant, disinfectant or other properties to said composition.
10. A shaving composition according to Claim 9 in which said oil comprises a fatty acid ester and said additives include a humectant and sufficient alkali to render said composition alkaline.
11. An anti-dandruff shampoo composition according to Claim 9 in which said additives include an anti-dandruff agent.
12. A psoriatic composition according to Claim 9 in which said additives include an aqueous coal tar solution.
13. A disinfectant composition according to Claim 9 in which said additives include a compatible antimicrobial agent.
14. Process for producing an aqueous, lotion-like liquid emulsion composition containing large amounts of oil or oil/wax mixture and a foam-producing volatile organic liquid dissolved therein, which composition, is capable of being contained within a non-pressurized container without self-foaming therefrom at temperatures up to about 120°F, and capable of being poured onto a surface at room temperatures and spread as a thin layer to self-develop a copious foam, which process comprises mixing together at least about 10% by weight of the total composition of at least one oil or oil/wax mixture, a foam-controlling mixture comprising (a) at least about 5% by weight of the total composition of at least one high foaming surface active agent which increases the solubility of said foam-producing volatile organic liquid in said oil or oil/wax mixture to an insufficient degree to prevent self foaming at 120 F, and (b) one or more foam suppressing agents which cooperate with said high foaming surface active agent(s) to cause said foam-producing liquid to be solubilized in said oil or oil/wax mixture to a sufficient degree to prevent the composition from self-foaming from an open container at temperatures up to about 120 F, and homogenizing said mixture until said surface active agent(s) and foam-suppressing agents are thoroughly dispersed in said oil or oil/wax mixture, adding water thereto while homogenizing to form an oil-in-water emulsion, and finally adding thereto at least about 5% by weight of the total composition of a said foam-producing volatile organic liquid, which is evaporable at or above room temperature to form an oil-in-water emulsion containing said volatile organic liquid as a foam-producing liquid dissolved to a substantial degree within the dispersed oil or oil/wax phase.
15. A process according to Claim 14 which comprises mixing from about 10% to 60% by weight of said oil or oil/wax mixture, from about 5% to 20% by weight of said high foaming surface active agent(s) , from about 2% to 15% by weight of said foam suppressing agent(s) , and from about 30% to 50% by weight of water to form said emulsion, and dissolving thereinto from about 5% to about 15% by weight of said volatile organic liquid.
16. A process according to Claim 14 which comprises mixing from about 20% to 35% by weight of said oil or oil/wax mixture, from about 10% to 15% by weight of said high foaming surface active agent, from 3% to 7% by weight of said foam suppressing agent(s) , and from about 35% to 45% by weight of water to form said emulsion, and dissolving thereinto from about 7% to about 12% by weight of said volatile organic liquid.
17. A process according to Claim 28 in which said foam suppressing agent comprises a low foaming surface active agent which does not produce a self foaming composition in the absence of said high foaming surface active agent.
18. A process according to Claim 28 in which said foam suppressing agent comprises an aliphatic alcohol or alkoxy aliphatic alcohol.
19. A process according to Claim 14 in which said volatile organic liquid is one having a vapor pressure from about 4 to 14 p.s.i.g. at a temperature between 90° and 100°F.
20. A process according to Claim 19 in which said volatile organic liquid comprises pentane, isopentane or hexane.
21. A process according to Claim 14 in which said oil comprises mineral oil or a mineral oil/mineral wax mixture.
22. A process according to Claim 14 in which said composition further contains minor amounts of one or more oil-soluble or water-soluble additives for imparting fragrance, emollient, cosmetic, medication, humectant, disinfectant or other properties to said composition.
23. A process for applying a thin coating of oil or oil/wax composition to a surface for cosmetic, aesthetic, protective, medication, cleansing or other purposes, which comprises producing a self-foaming, lotion-like, flowable liquid, aqueous oil-in-water emulsion comprising a continuous aqueous phase and a discontinuous phase comprising at least about 10% by weight of oil or oil/wax mixture, a volatile organic foam-producing liquid, and a foam-controlling mixture comprising (a) at least one high foaming surface active agent which increases the solubility of the foam-producing liquid in the oil or oil/wax to an insufficient degree to prevent self-foaming at 120 F, and (b) one or more foam suppressing agents which cooperate with said high foaming surface active agents to cause said foam-producing liquid to be solubilized in said oil or oil/wax mixture to a sufficient degree that said liquid remains dissolved within the oil or oil/wax until the composition is spread at room temperature as a thin layer on a surface exposed to the atmosphere, pouring said lotion-like dispersion onto a surface to be treated and spreading it as a thin layer exposed to ambient conditions, whereby said composition self-develops a copious foam due to the evaporation of said volatile foam-producing liquid, which foam contains said oil or oil/wax mixture and can be rubbed into or over said surface to provide a cosmetic, aesthetic, protective, medicinal, cleansing or other coating thereon.
PCT/US1990/001471 1989-03-21 1990-03-19 Self-foaming oil compositions and process for making and using same WO1990011343A1 (en)

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WO1995013349A1 (en) * 1993-11-10 1995-05-18 Dowbrands Inc. Self-foaming multifunctional cleansing composition
WO1997000934A1 (en) * 1995-06-23 1997-01-09 R & C Products Pty. Limited Aerosol cleaning compositions
DE19957739A1 (en) * 1999-12-01 2001-06-28 Henkel Ecolab Gmbh & Co Ohg Hand wash lotion for refillable foam generator
WO2004106477A1 (en) * 2003-05-27 2004-12-09 Unilever N.V. Effervescent cleaning composition
EP0883680B2 (en) 1996-01-04 2005-12-28 S.C. Johnson & Son, Inc. Self-foaming microemulsion cleaning compositions
US7012056B2 (en) * 2003-04-17 2006-03-14 Unilever Home & Personal Care Usa Effervescent cleaning composition comprising surfactant, builder, and dissolved gas
WO2009083895A1 (en) * 2007-12-26 2009-07-09 The Procter & Gamble Company Personal care compositions containing skin conditioning agents

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