HK1089679A - Striped liquid personal cleansing compositions containing a cleansing phase and a separate benefit phase comprising a water in oil emulsion - Google Patents

Description

Striped liquid personal cleansing compositions consisting of a cleansing phase and a separate benefit phase comprising a water-in-oil emulsion

Technical Field

The present invention relates to striped liquid personal cleansing compositions comprised of a cleansing phase and a separate benefit phase comprising a water-in-oil emulsion wherein the two phases are packaged in direct contact while remaining stable for long periods of time.

Background

Personal cleansing compositions intended to provide skin conditioning benefits are known. Many of these compositions are aqueous systems comprising emulsified conditioning oil or other similar materials in combination with a lathering surfactant. While many of these products can provide both conditioning and cleansing benefits, there are often compromises associated with their use. For example, it is often difficult to formulate a product that deposits a sufficient amount of skin conditioning agent on the skin during use. To prevent the skin conditioning agents from being emulsified by the cleansing surfactant, it is often necessary to add large amounts of skin conditioning agents to the composition. Unfortunately, increasing the level of skin conditioning agent for increased deposition purposes negatively impacts the lather performance and stability of the product.

One attempt to provide conditioning and cleansing benefits from personal cleansing products while maintaining stability is to use dual chamber packages. These packages contain separate cleansing and conditioning compositions and allow for the co-dispensing of the two in one or two fluids. Thus, the separate conditioning and cleansing compositions remain physically separate and stable during long term storage and just prior to use, but mix together during or after dispensing to provide conditioning and cleansing benefits from a physically stable system. While the above-described dual-chamber delivery systems may provide improved conditioning benefits over conventional systems, it is often difficult to achieve consistent and uniform performance because of the uneven dispensing ratio between the cleansing and conditioning phases from these dual-chamber packages. In addition, these packaging systems add considerable cost to the finished product.

Striped personal cleansing compositions are also known in the art. However, these compositions do not contain a cleansing phase and a benefit phase, and thus stability has not been an issue for these products.

Thus, there remains a need for a stable personal cleansing composition that can provide both cleansing benefits and improved skin conditioning benefits. It has now been found that striped personal cleansing compositions comprising these two phases in direct contact can be formulated which remain stable over long periods of time.

These striped personal cleansing compositions of the present invention are comprised of a cleansing phase and a benefit phase that remain stable when packaged in direct contact. These compositions provide improved deposition of conditioning agents on the skin.

The compositions of the present invention further provide excellent aesthetics resulting from a striped appearance as well as improved skin feel during and after application. It has been found that the above compositions can be formulated with sufficiently high levels of benefit agents without affecting the lather performance and stability of the product. The excellent lather performance of these compositions can be determined by the lather volume method described herein.

It has also been found that the striped personal cleansing compositions herein can be formulated with selected skin active agents that provide improved long-term skin benefits to the skin. These compositions comprise a cleansing phase comprising a cleansing surfactant and at least one additional benefit phase comprising a skin active agent, wherein the cleansing phase and the active phase are packaged in direct contact and, at the same time, remain stable for long periods of time.

Summary of The Invention

The present invention relates to striped personal cleansing compositions comprised of a first stripe comprising a cleansing phase comprising a surfactant and water and at least one additional stripe comprising a separate benefit phase comprising a water-in-oil emulsion.

Detailed Description

The striped personal cleansing compositions of the present invention are comprised of a first stripe comprising a cleansing phase and at least one separate additional stripe comprising a benefit phase. The benefit phase comprises a water-in-oil emulsion. These and other basic limitations of the compositions and methods of the invention, as well as many of the optional ingredients useful herein, are described in detail below.

The term "streaks" as used herein means that the cleansing phase and the benefit phase herein occupy separate and distinct physical spaces within the package in which they are stored, but are in direct contact with each other (i.e., they are not separated by a boundary and they do not emulsify or mix to any significant extent). In a preferred embodiment of the present invention, the cleansing phase and the benefit phase are present in the container as separate layers or "stripes" which may be relatively uniform and flat in a plane transverse to the package. Alternatively, the layer may be uneven, i.e. wavy, or may be non-uniform in plan. The stripe need not necessarily extend to the entire space of the package. The "stripes" may be of various geometries, of various colors, or include glitter or pearlescence.

As used herein, the term "ambient conditions" refers to one (1) atmosphere, 50% relative humidity, and 25 ℃ ambient conditions.

As used herein, unless otherwise indicated, the term "stable" refers to compositions that maintain at least two "separate" phases in direct contact for at least about 180 days at ambient conditions. By "independent" is meant that the phases are substantially unmixed as observed by the naked eye prior to dispensing of the composition.

The term "personal cleansing composition" as used herein refers to compositions intended for topical application to the skin or hair.

As used herein, the phrase "substantially free" means that the composition comprises less than about 3%, preferably less than about 1%, more preferably less than about 0.5%, even more preferably less than about 0.25%, and most preferably less than about 0.1% of the specified ingredient.

All percentages, parts and ratios used herein are by weight of the total composition, unless otherwise specified. All weights as they pertain to listed ingredients are based on the active level and, therefore, do not include solvents or by-products that may be included in commercially available materials, unless otherwise specified.

All cited references are incorporated herein by reference in their entirety. The citation of any document is not an admission of its availability as prior art to the claimed invention.

The personal cleansing compositions and methods of the present invention can comprise, consist of, or consist essentially of the essential elements and limitations described herein, as well as any of the additional or optional ingredients, components, or limitations described herein or otherwise useful in personal cleansing compositions intended for topical application to hair or skin.

Product form

The personal cleansing compositions of the present invention are typically in liquid form. The term "liquid" as used herein means that the composition is generally flowable to some extent. Thus, "liquid" may include liquid, semi-fluid, cream, lotion, or gel compositions intended for topical application to the skin. These compositions typically exhibit a viscosity equal to or greater than about 3,000cps, but less than 1,000,000 cps. These compositions comprise a cleansing phase and a benefit phase, which will be described in more detail below.

For purposes of defining the compositions and methods of the present invention, all product forms contemplated are rinse-off formulations, meaning that the product can be topically applied to the skin or hair, followed by subsequent (i.e., within minutes) rinsing with water, or otherwise wiped off with a substrate or other suitable removal means.

Cleansing phase

The personal cleansing compositions of the present invention comprise an aqueous cleansing phase comprising a surfactant suitable for application to the skin or hair. Surfactants suitable for use herein include any known or otherwise effective cleansing surfactant suitable for application to the skin and which is also compatible with the other essential ingredients in the aqueous cleansing phase of the composition. These cleansing surfactants include anionic surfactants, nonionic surfactants, cationic surfactants, zwitterionic or amphoteric surfactants, or combinations thereof. Other suitable surfactants are described in "Emulsifiers and Detergents" by McCutcheon, published by m.c. publishing co., (journal of 1989) and U.S. patent 3,929,678.

The aqueous cleansing phase of the personal care composition preferably comprises a cleansing surfactant at a concentration of from about 3% to about 60%, more preferably from about 4% to about 30%, even more preferably from about 5% to about 25%, by weight of the aqueous cleansing phase. The preferred pH range for the cleansing phase is from about 5 to about 8.

The aqueous cleansing phase of the personal care composition preferably produces a total lather volume of at least 350ml, preferably greater than 400ml, even more preferably greater than 600ml, as described in the lather volume test. The aqueous cleansing phase of the personal care composition preferably produces an instantaneous lather volume of at least 150ml, preferably greater than 200ml, most preferably greater than 300ml, as described in the lather volume test.

Anionic surfactants suitable for use in the cleansing phase include alkyl sulfates and alkyl ether sulfates. Each of these materials has the formula ROSO₃M and RO (C)₂H₄O)_xSO₃M, wherein R is an alkyl or alkenyl group containing from about 8 to about 24 carbon atoms, x is from 1 to 10, and M is a water-soluble cation, such as ammonium, sodium, potassium or triethanolamine. The alkyl ether sulfates are typically prepared as condensation products of ethylene oxide and monohydric alcohols having from about 8 to about 24 carbon atoms. Preferably, R has from about 10 to about 18 carbon atoms in the alkyl and alkyl ether sulfates. The alcohol may be derived from fats, such as coconut oil or tallow, or may be synthetic. Lauryl alcohol and straight chain alcohols derived from coconut oil are preferred herein. As described aboveThe alcohol may be reacted with from about 1 to about 10, preferably from about 3 to about 5, more preferably about 3, molar ratios of ethylene oxide, and the resulting mixture of molecular species (e.g., having an average of 3 moles of ethylene oxide per mole of alcohol) is treated with sulfuric acid and neutralized.

Other suitable anionic surfactants include organic water soluble salts having the general formula [ R¹-SO₃-M]Sulfuric acid reaction product of (2), wherein R¹Selected from straight or branched chain saturated aliphatic hydrocarbon groups having from about 8 to about 24, preferably from about 10 to about 18, carbon atoms; and M is a cation. Suitable examples are salts of organic sulfuric acid reaction products of hydrocarbons of the methane series, including iso-, neo-, exo-and n-paraffins having from about 8 to about 24 carbon atoms, preferably from about 10 to about 18 carbon atoms, and sulfonating agents, e.g., SO obtained by bleaching and hydrolysis according to known sulfonation methods, including bleaching and hydrolysis₃、H₂SO₄And oleum. Preference is given to sulfonated C_10-18Alkali metal and ammonium salts of n-paraffins.

Preferred anionic surfactants useful in the cleansing phase include: ammonium lauryl sulfate, ammonium polyoxyethylene lauryl ether sulfate, triethylamine lauryl sulfate, triethylamine polyoxyethylene lauryl ether sulfate, triethanolamine lauryl sulfate, triethanolamine polyoxyethylene lauryl ether sulfate, monoethanolamine lauryl sulfate, monoethanolamine polyoxyethylene lauryl ether sulfate, diethanolamine lauryl sulfate, diethanolamine polyoxyethylene lauryl ether sulfate, sodium laureth sulfate, sodium lauryl sulfate, sodium polyoxyethylene lauryl ether sulfate, potassium polyoxyethylene lauryl ether sulfate, sodium lauryl sarcosinate, sodium lauroyl sarcosinate, lauryl sarcosine, cocoyl sarcosine, ammonium cocoyl sulfate, ammonium lauroyl sulfate, sodium cocoyl sulfate, sodium lauroyl sulfate, potassium cocoyl sulfate, potassium lauryl sulfate, monoethanolamine cocoyl sulfate, sodium tridecyl benzene sulfonate, sodium dodecyl benzene sulfonate, sodium lauryl sulfate, sodium lauryl sarcosyl sarcosinate, sodium lauryl sarcosinate, And combinations thereof.

Amphoteric surfactants suitable for use in the cleansing phase include those that are broadly described as derivatives of aliphatic secondary and tertiary amines in which the aliphatic radical can be straight or branched chain and wherein one of the aliphatic substituents contains from about 8 to about 18 carbon atoms and one contains an anionic water solubilizing group, e.g., carboxy, sulfonate, sulfate, phosphate, or phosphonate. Examples of compounds falling within this definition are: sodium 3-dodecylaminopropionate, sodium 3-dodecylaminopropane sulfonate, sodium lauryl sarcosinate, N-alkyl taurines (such as those prepared by reacting dodecylamine with sodium isethionate, as set forth in U.S. Pat. No.2,658,072), N-higher alkyl aspartates (such as those prepared according to the process set forth in U.S. Pat. No.2,438,091), and those products described in U.S. Pat. No.2,528,378.

Zwitterionic surfactants suitable for use in the cleansing phase include those that are broadly described as derivatives of aliphatic quaternary ammonium, phosphonium, and sulfonium compounds, in which the aliphatic radicals can be straight or branched chain, and wherein one of the aliphatic substituents contains from about 8 to about 18 carbon atoms and one contains an anionic group, e.g., carboxy, sulfonate, sulfate, phosphate, or phosphonate. Suitable zwitterionic surfactants described above are of the formula:

wherein R is²Comprising an alkyl, alkenyl or hydroxyalkyl group having from about 8 to about 18 carbon atoms, from 0 to about 10 ethylene oxide moieties and from 0 to about 1 glyceryl moiety; y is selected from nitrogen, phosphorus and sulfur atoms; r³Is an alkyl or monohydroxyalkyl group containing from about 1 to about 3 carbon atoms; x is 1 when Y is a sulfur atom, and X is 2 when Y is a nitrogen atom or a phosphorus atom; r⁴Is an alkylene or hydroxyalkylene group having from about 1 to about 4 carbon atoms and Z is a group selected from carboxylate, sulfonate, sulfate, phosphonate, and phosphate.

Other zwitterionic surfactants suitable for use in the cleansing phase include betaines including higher alkyl betaines, such as coco diMethylcarboxymethylbetaine, cocamidopropyl betaine, cocobetaine, laurylamidopropyl betaine, oleylbetaine, lauryldimethylcarboxymethylbetaine, lauryldimethyl-alpha-carboxyethylbetaine, cetyldimethylcarboxymethylbetaine, lauryldi- (2-hydroxyethyl) carboxymethylbetaine, stearyldimethyl-betaine, oleyldimethylgamma-carboxypropylbetaine and lauryldi- (2-hydroxypropyl) -alpha-carboxyethylbetaine. Representative of sulfobetaines are coco dimethyl sulfopropyl betaine, stearyl dimethyl sulfopropyl betaine, lauryl dimethyl sulfoethyl betaine, lauryl bis- (2-hydroxyethyl) sulfopropyl betaine, and the like; amino betaines and amino sulfobetaines, of which RCONH (CH)₂)₃Groups attached to the nitrogen atom of betaine may also be used in the present invention.

Preferred cleansing phase characteristics for stability

Layered structurant

In the cleansing phase, the compositions of the present invention preferably comprise from about 0.1% to 10% by weight of a structuring agent which is used in the composition to form the lamellar phase. It is believed that the lamellar phase may enhance the interfacial stability between the cleansing phase and the benefit phase.

Suitable structurants include derivatives of fatty acids or esters thereof, fatty alcohols or glycerol tris (hydroxystearate), polycare 133. More preferably the structuring agent is selected from lauric acid or glycerol tri (hydroxystearate).

In another embodiment of the present invention, the surfactant composition for use in the cleansing phase exhibits non-newtonian shear thinning behavior (referred to herein as a free-flowing composition). These cleaning compositions comprise water, at least one anionic surfactant, an electrolyte and at least one alkanolamide. It has been found that the stability of the resulting personal cleansing composition can be improved by using a cleansing phase that exhibits non-newtonian shear thinning behavior.

The alkanolamide (if present) has the general structure:

wherein R is C₈To C₂₄Or in certain embodiments preferably C₈To C₂₂Or in other embodiments, C₈To C₁₈A saturated or unsaturated, linear or branched aliphatic radical of (A), R₁And R₂Are identical or different C₂To C₄X is 0 to 10; y is 1 to 10, and wherein the sum of x and y is less than or equal to 10.

When included in the composition, the alkanolamide is present in an amount of from about 0.1% to about 10% by weight, and in certain embodiments, preferably from about 2% to about 5% by weight. Some preferred alkanolamides include Cocamide MEA (cocomonoethanolamide) and Cocamide MIPA (cocomonoisopropanolamide). Co-surfactants selected from the classes of non-ionic, amphoteric and/or zwitterionic surfactants or cationic surfactants may optionally be incorporated.

If used, the electrolyte may be added to the composition itself, or may be formed in situ by counter ions included in one of the raw materials. Preferably, the electrolyte comprises anions (including phosphate, chloride, sulfate, or citrate) and cations (including sodium, ammonium, potassium, magnesium, or mixtures thereof). Some preferred electrolytes are sodium or ammonium chloride, or sodium or ammonium sulfate.

The electrolyte should be present in an amount that readily forms a flowable composition. Typically, this amount is from about 0.1% to about 15%, preferably from about 1% to about 6%, by weight of the cleansing phase, but can also vary as desired.

Optional ingredients for cleansing phase

Other suitable optional ingredients that may be used in the cleansing phase include humectants and solutes. A variety of humectants and solutes can be employed and can be present in an amount from about 0.1% to about 50%, preferably from about 0.5% to about 35%, more preferably from about 2% to about 20% of the personal care composition.

Nonionic polyethylene/polypropylene glycol polymers may be preferred for use as skin conditioning agents. Particularly preferred polymers for use herein are: PEG-2M, wherein x is equal to 2 and n has an average value of about 2,000(PEG 2-M is also known as Polyox WSR)^*N-10 (available from Union carbide) and PEG-2,000); PEG-5M, wherein x is equal to 2 and n has an average value of about 5,000(PEG 5-M is also known as Polyox WSR)^*35 and Polyox WSR^*N-80 (both available from Union Carbide) and PEG-5,000 and polyethylene glycol 200,000; PEG-7M, wherein x is equal to 2 and n has an average value of about 7,000(PEG 7-M is also known as Polyox WSR)^*N-750 from Union Carbide); PEG-9M, wherein x equals 2 and n has an average value of about 9,000(PEG 9-M is also known as Polyox WSR)^*N-3333 from Union Carbide); PEG-14M, wherein x is equal to 2 and n has an average value of about 14,000(PEG 14-M is also known as Polyox WSR-205 and Polyox WSR^*N-3000, both available from Union carbide); and PEG-90M, wherein x is equal to 2 and n has an average value of about 90,000(PEG-90M is also known as Polyox WSR)^*301 from Union Carbide).

The striped personal cleansing compositions of the present invention may additionally comprise an organic cationic deposition polymer as a deposition aid in the cleansing phase for the benefit agents described hereinafter. The concentration of cationic deposition polymer is preferably from about 0.025% to about 3%, more preferably from about 0.05% to about 2%, even more preferably from about 0.1% to about 1%, by weight of the cleansing phase composition.

Cationic deposition polymers suitable for use in striped personal cleansing compositions according to the present invention comprise nitrogen-containing cationic moieties, such as quaternary ammonium ions or amino protonated cationic moieties. The amino protonated cation can be a primary, secondary, or tertiary amine (preferably a secondary or tertiary amine), depending on the particular species of personal cleansing composition and the pH selected. The average molecular weight of the cationic deposition polymer is between about 5,000 and about 1 million, preferably at least about 100,000, more preferably at least about 200,000, but preferably no more than about 2 million, more preferably no more than about 1.5 million. Also, the polymer has a cationic charge density of from about 0.2meq/gm to about 5meq/gm, preferably at least about 0.4meq/gm, more preferably at least about 0.6meq/gm at the pH at which the personal cleansing composition is intended to be used, which is typically from about pH4 to about pH9, preferably between about pH5 and about pH 8.

The charge density is controlled and adjusted according to methods well known in the art. As used herein, the "charge density" of a cationic polymer is defined as the number of cationic sites per gram atomic weight (molecular weight) of the polymer and can be expressed in terms of meq/gram of cationic charge. In general, adjusting the proportion of amine or quaternary ammonium moieties in the polymer, as well as adjusting the pH of the amine moieties in the personal cleansing composition, will affect the charge density.

Any anionic counterions can be used in combination with the cationic deposition polymer so long as the polymer remains soluble in water in the personal cleansing composition or in a coacervate phase of the personal cleansing composition, and so long as the counterions are physically and chemically compatible with the essential components of the personal cleansing composition or do not otherwise unduly impair product performance, stability or aesthetics. Non-limiting examples of such counterions include halide (e.g., chloride, fluoride, bromide, iodide), sulfate, and methylsulfate.

Non-limiting examples of cationic deposition polymers for use in personal cleansing compositions include polysaccharide polymers, such as cationic cellulose derivatives. The preferred cationic cellulose Polymer is the salt of hydroxyethyl cellulose reacted with trimethylammonium substituted epoxide, referred to in the industry (CTFA) as polyquaternium 10, available from the Polymer KG, JR and LR polymers series from Amerchol Corp. (Edison, N.J., USA), with KG-30M being most preferred.

Other suitable cationic deposition polymers include cationic guar derivatives such as guar hydroxypropyltrimonium chloride, specific examples of which include the Jaguar series (preferably Jaguar C-17) commercially available from Rhodia Inc. and the N-Hance polymer series commercially available from Aqualon.

Other suitable cationic deposition polymers include synthetic cationic polymers. Cationic polymers suitable for use in the cleaning compositions herein are water soluble or dispersible, non-crosslinked, cationic polymers having a cationic charge density of from about 4meq/gm to about 7meq/gm, preferably from about 4meq/gm to about 6meq/gm, more preferably from about 4.2meq/gm to about 5.5 meq/gm. The selected polymer must also have an average molecular weight of from about 1,000 to about 1 million, preferably from about 10,000 to about 500,000, more preferably from about 75,000 to about 250,000.

The concentration of the cationic polymer in the cleaning composition ranges from about 0.025% to about 5%, preferably from about 0.1% to about 3%, more preferably from about 0.2% to about 1%, by weight of the composition.

A non-limiting example of a commercially available synthetic cationic polymer for use in the cleaning composition is polymethacrylamidopropyltrimethylammonium chloride, available under the trade name Polycare 133 from Rhodia, Cranberry, n.j., u.s.a.

The cationic polymers herein are soluble in the cleansing phase, or preferably in the complex coacervate phase in the striped personal cleansing composition, which coacervate phase is formed from the cationic deposition polymer and anionic surfactant component described herein above. Complex coacervates of cationic deposition polymers may also be formed from other charged species in the personal cleansing composition.

Coacervate formation depends on various criteria such as molecular weight, component concentration and ratio of interacting ionic components, ionic strength (including changes in ionic strength, e.g., by addition of salts), charge density of cationic and anionic components, pH, and temperature. Coacervate Systems and the effects of these parameters have been described, for example, in "International and cationic Compounds in Mixed Systems", Cosmetics & Toiletries, Vol.106, 4 months 1991, pp.49 to 54, of C.J.van Os, "Cooservation, Complex-Cooservation and circulation", J.Dispersion Science and Technology, Vol.9 (5, 6), 1988-89, pp.561 to 573, and of D.J.Burgess, "Practical Analysis of Complex Cooperate Systems", J.of Cold Interface Science, Vol.140, p.1, 1990, pp.227 to 238, the description of which is incorporated herein by reference.

It is believed that the presence of the cationic deposition polymer in the coacervate phase of the personal cleansing composition, or the formation of the coacervate phase upon application of the cleansing composition to the skin or rinsing of the cleansing composition from the skin, is particularly advantageous. It is believed that the complex coacervates are more readily deposited on the skin, which results in improved deposition of the benefit agent. Thus, generally the cationic deposition polymer is preferably present in the personal cleansing composition in the form of a coacervate phase or a coacervate phase which forms upon dilution. If no coacervate is present in the personal cleansing composition, the cationic deposition polymer will preferably be present in the complex coacervate formed upon dilution of the cleansing composition with water.

Techniques for analyzing complex coacervate formation processes are known in the art. For example, at any selected dilution stage, centrifugal separation analysis may be applied to the personal cleansing composition to identify whether a coacervate phase has formed.

Benefit phase (Water-in-oil emulsion)

The benefit phase of the present invention comprises a water-in-oil emulsion comprising an oil, an emulsifier and water, and preferably a density modulator. The oil phase is the continuous phase and the aqueous phase is the discontinuous phase or "internal phase".

Oil

The benefit phase of the present invention typically comprises from about 10% to about 99%, more preferably from 20% to about 95%, even more preferably from 50% to about 90%, most preferably from 60% to about 80% oil.

Generally, the higher the oil content used in a water-in-oil emulsion, the more stable will be the personal cleansing composition using the water-in-oil emulsion. Oils suitable for use herein include any natural and synthetic material having a total solubility parameter of less than about 12.5 (cal/cm)³)^0.5Preferably less than about 11.5 (cal/cm)³)^0.5. The solubility parameters of the oils described herein can be determined by methods well known in the chemical arts for determining the relative polarity of substances. The description of solubility parameters and methods for their determination are described in: vaughn, "Solubility Effects in Product, Package, Pentation and Preservation", 103 Cosmetics and Toiletries, pp.47 to 69, 10 1988; and "usangsolublity Parameters in Cosmetics formulations" of c.d. vaughn, 36 j.soc. cosmetic Chemists, pages 319 to 333, 9/10 1988.

The benefit agent used in the benefit phase of the composition has a Vaughan Solubility Parameter (VSP) of from about 5 to about 10, preferably from about 6 to less than 10, more preferably from about 6 to about 9. Non-limiting examples of benefit agents having VSP values in the range of about 5 to about 10 include the following:

vaughan solubility parameter

Cyclomethicone 5.92

Squalene 6.03

Vaseline 7.33

Isopropyl palmitate 7.78

Isopropyl myristate 8.02

Castor oil 8.90

Cholesterol 9.55

Such as those disclosed in "solublity, Effects in Product, Package, pennetration and Preservation", c.d. vaughan, Cosmetics and oils, vol 103, 10 1988.

By "total solubility parameter" is meant that it is possible to use a polymer having a solubility parameter higher than 12.5 (cal/cm)³)^0.5If they are mixed with other oils, the total solubility parameter of the oil mixture can be reduced to less than about 12.5 (cal/cm)³)^0.5. For example, a small portion of diethylene glycol (solubility parameter 13.61) is mixed with lanolin oil (solubility parameter 7.3) and a co-solvent to produce a mixture having a solubility parameter of less than 12.5 (cal/cm)³)^0.5。

Oils suitable for use herein include, but are not limited to, hydrocarbon oils and waxes, silicones, fatty acid derivatives, cholesterol derivatives, diglycerides, triglycerides, vegetable oils, vegetable oil derivatives, acetyl glycerides, alkyl esters, alkenyl esters, lanolin and its derivatives, wax esters, beeswax derivatives, sterols and phospholipids, and combinations thereof.

Non-limiting examples of hydrocarbon oils and waxes suitable for use herein include petrolatum, mineral oil, microcrystalline wax, polyolefins, paraffin wax, cerasus, ceresin, polyethylene, perhydrosqualene, polyalphaolefin, hydrogenated polyisobutylene, and combinations thereof.

Non-limiting examples of silicone oils suitable for use herein include dimethicone copolyols, dimethylpolysiloxanes, diethylpolysiloxanes, mixed C1-C30 alkylpolysiloxanes, phenyl dimethicone, dimethiconol, and combinations thereof. Preferred are non-volatile silicones selected from the group consisting of dimethicones, dimethiconols, mixed C1-C30 alkyl polysiloxanes, and combinations thereof. Non-limiting examples of silicone oils useful herein are described in U.S. Pat. No. 5,011,681(Ciotti et al).

Non-limiting examples of di-and triglycerides suitable for use herein include castor oil, soybean oil, derivatized soybean oil (e.g., maleated soybean oil), safflower oil, cottonseed oil, corn oil, walnut oil, peanut oil, olive oil, cod liver oil, almond oil, avocado oil, palm oil, and sesame oil, vegetable oils, sunflower seed oil, and vegetable oil derivatives, coconut oil and derivatized coconut oil, cottonseed oil and derivatized cottonseed oil, jojoba oil, coconut oil, and combinations thereof. In addition, any of the above oils which have been partially or fully hydrogenated are also suitable.

Non-limiting examples of acetylated glycerides suitable for use herein include acetylated monoglycerides.

Non-limiting examples of alkyl esters suitable for use herein include isopropyl fatty acid esters and long chain esters of long chain fatty acids, such as SEFA (sucrose fatty acid esters). Lauryl pyrrolidone carboxylic acid, pentaerythritol esters, aromatic mono-, di-or triesters, cetyl ricinoleate, non-limiting examples of which include isopropyl palmitate, isopropyl myristate, cetyl ricinoleate and stearyl ricinoleate. Other examples are: hexyl laurate, isohexyl laurate, tetradecyl myristate, isohexyl palmitate, decyl oleate, isodecyl oleate, hexadecyl stearate, decyl stearate, isopropyl isostearate, diisopropyl adipate, diisohexyl adipate, dihexyldecyl adipate, diisopropyl sebacate, acyl isononanoates, lauryl lactate, tetradecyl lactate, cetyl lactate, and combinations thereof.

Non-limiting examples of alkenyl esters suitable for use herein include oleyl myristate, oleyl stearate, oleyl oleate, and combinations thereof.

Non-limiting examples of lanolin and lanolin derivatives suitable for use herein include lanolin, lanolin oil, lanolin wax, lanolin alcohols, lanolin fatty acids, isopropyl lanolate, acetylated lanolin alcohols, lanolin alcohol linoleate, lanolin alcohol ricinoleate, hydroxylated lanolin, hydrogenated lanolin, and combinations thereof.

Other suitable oils further include milk triglycerides (e.g., hydroxylated milk glycerides) and polyol fatty acid polyesters.

Other suitable oils further include wax esters, non-limiting examples of which include beeswax and beeswax derivatives, spermaceti wax, myristyl myristate, stearyl stearate, and combinations thereof. Also useful are vegetable waxes such as carnauba wax and candelilla wax; sterols such as cholesterol, fatty acid cholesterol esters; phospholipids such as lecithin and derivatives, sphingolipids, ceramides, glycosphingolipids; and combinations thereof.

Low HLB emulsifiers

The water-in-oil emulsion of the present invention also comprises from about 0.1% to about 20%, more preferably from about 0.1% to about 10%, still more preferably from about 0.5% to about 9%, of one or more low HLB emulsifiers. The low HLB emulsifier may be used as an emulsifier.

Preferred low HLB emulsifiers are those having an HLB value of from about 1 to about 10, more preferably from 1 to about 8. Suitable low HLB emulsifiers are selected from those saturated C₁₄To C₃₀Fatty alcohols, saturated C containing from about 1 to about 5 moles of ethylene oxide₁₆To C₃₀Fatty alcohol, saturated C₁₆To C₃₀Diol, saturated C₁₆To C₃₀Monoglyceride, saturated C₁₆To C₃₀Hydroxy fatty acid, C₁₄To C₃₀Hydroxylated and non-hydroxylated saturated fatty acids, C₁₄To C₃₀Saturated ethoxylated fatty acids, amines and alcohols containing from about 1 to about 5 moles of ethylene oxide glycol, C having a monoglyceride content of at least 40%₁₄To C₃₀Saturated monoglycerides, C having from about 1 to about 3 alkyl groups and from about 2 to about 3 saturated glycerol units₁₄To C₃₀Saturated polyglycerol ester, C₁₄To C₃₀Monoglyceride, C₁₄To C₃₀Sorbitan mono/di-ester, C having about 1 to about 5 moles of ethylene oxide₁₄To C₃₀Saturated ethoxylated sorbitan mono-and diesters, C₁₄To C₃₀Saturated methyl glucoside ester, C₁₄To C₃₀Saturated sucrose mono/diesters, C with about 1 to about 5 moles of ethylene oxide₁₄To C₃₀Saturated ethoxylated methyl glucoside esters, C having an average glucose unit between 1 and 2₁₄To C₃₀Saturated polyglucosides, and mixtures thereof, having a melting point of at least about 45 ℃.

The low HLB emulsifier of the present invention is selected from stearic acid, palmitic acid, stearyl alcohol, cetyl alcohol, behenyl alcohol, stearic acid, palmitic acid, the polyethylene glycol ether of stearyl alcohol having an average ethylene oxide unit of from about 1 to about 5, the polyethylene glycol ether of cetyl alcohol having an average ethylene oxide unit of from about 1 to about 5, and mixtures thereof. More preferred low HLB emulsifiers of the present invention are selected from the group consisting of stearyl alcohol, cetyl alcohol, behenyl alcohol, the polyethylene glycol ether of stearyl alcohol having an average ethylene oxide unit of about 2 (steareth-2), the polyethylene glycol ether of cetyl alcohol having an average ethylene oxide unit of about 2, and mixtures thereof. Even more preferred low HLB emulsifiers are selected from stearic acid, palmitic acid, stearyl alcohol, cetyl alcohol, behenyl alcohol, steareth-2, and mixtures thereof.

Density regulator

To further improve stability under stress conditions such as high temperature and vibration conditions, it is preferable to adjust the densities of the independent phases so that they are substantially equivalent. To achieve this, low density microspheres are added to the cleansing phase of the striped composition. The low density microspheres used to reduce the bulk density of the cleansing phase are those having a density of less than 0.7g/cm³Preferably less than 0.2g/cm³More preferably less than 0.1g/cm³Most preferably less than 0.05g/cm³The particles of (1). Typically, the low density microspheres have a diameter of less than 200 μm, preferably less than 100 μm, most preferably less than 40 μm. The density difference between the cleansing phase and the benefit phase is preferably less than 0.15g/cm³More preferably less than 0.10g/cm³Even more preferablySelecting less than 0.05g/cm³Most preferably less than 0.01g/cm³。

Microspheres made of any suitable inorganic or organic material are not incompatible with application to the skin, i.e. are non-irritating and non-toxic.

Expanded microspheres made of thermoplastic material are known and can be obtained according to the processes described, for example, in patent and patent applications EP-56219, EP-348372, EP-486080, EP-320473, EP-112807 and U.S. Pat. No. 3,615,972.

These microspheres can be made of any non-toxic and non-irritating thermoplastic material. For example, a polymer or copolymer of acrylonitrile, or a polymer or copolymer of 1, 1-dichloroethylene may be used. It is possible to use, for example, copolymers consisting of from 0% to 60% by weight of units derived from 1, 1-dichloroethylene, from 20% to 90% by weight of units derived from acrylonitrile and from 0% to 50% by weight of units derived from acrylic monomers or styrene monomers, the sum of the percentages (by weight) being equal to 100. The acrylic monomer is, for example, methyl acrylate or ethyl acrylate, or methyl methacrylate or ethyl methacrylate. The styrene monomer is, for example, alpha-methylstyrene or styrene. These microspheres may be in dry or hydrated form.

The internal cavity of the expanded hollow microspheres contains a gas, which may be a hydrocarbon such as isobutane or isopentane, or alternatively air. Among the hollow microspheres which may be used, particular mention should be made of the one sold under the trademark EXPANCEL^*(thermoplastic expandable microspheres) are commercially available from Akzo Nobel company, especially those of DE (dry state) or WE (hydrated state) grade. The embodiment comprises the following steps: expancel^*091 DE 40 d30、Expancel^*091 DE 80 d30、Expancel^*051 DE 40 d60、Expancel^*091 WE 40 d24、Expancel^*053DE 40 d20。

Representative microspheres derived from inorganic materials include, for example, "Qcel^*Hollow microspheres "and" EXTENDSOSHERES^TMCeramic hollow microspheres ", both of which are available from PQCOrporation. The embodiment is as follows: qcel^*300、Qcel^*6019、Qcel^*6042S。

Just as low density microspheres are added to the cleansing phase of the present invention to improve vibrational stability, high density materials can be added to the benefit phase to increase its density, which has the same effect on stability.

Aqueous phase

The benefit phase of the present invention typically comprises from about 1% to about 90% of the aqueous phase. The aqueous phase comprises a fluid selected from water, monohydric alcohols and polyhydric alcohols (glycerol, propylene glycol, ethanol, isopropanol, etc.).

Optional ingredients

The personal cleansing compositions of the present invention may also contain other optional ingredients which may modify the physical, chemical, cosmetic or aesthetic characteristics of the composition or serve as additional "active" components when deposited on the skin. The composition may further comprise optional inert ingredients. Many of the above optional ingredients are known to be useful in personal care compositions, and may also be useful in the personal cleansing compositions herein, provided that the above optional materials are compatible with the essential materials described herein, or do not otherwise unduly impair product performance.

Typically, The aforementioned optional ingredients are mostly those substances approved for use in cosmetics and those described in The reference books, such as "CTFA Cosmetic Ingredient Handbook" second edition, The Cosmetic, Toiletries, and france Association, inc., 1988, 1992. These optional materials may be used in any aspect of the compositions of the present invention, including the active materials or cleansing phases described herein.

Optional ingredients for the cleansing phase of the compositions of the present invention may include any of the benefit phase materials described herein that are also compatible with the selected ingredients in the cleansing phase. Likewise, optional ingredients for the benefit phase of the compositions of the present invention may include any of the cleansing phase materials described herein that are also compatible with the selected ingredients in the benefit phase.

Other optional ingredients for either phase of the composition, preferably for the benefit phase, include silicone elastomer powders and fluids that can provide any of a variety of product benefits, including improved product stability, application aesthetics, emolliency, conditioning, and the like. The concentration of the silicone elastomer in the composition is preferably from about 0.1% to about 20%, more preferably from about 0.5% to about 10%, by weight of the composition. In this regard, the weight percentages are based on the weight of the silicone elastomer material itself, and do not include any silicone-containing fluid typically added to the silicone elastomer material described above during formulation. Silicone elastomers suitable for optional use herein include emulsifying and non-emulsifying silicone elastomers, non-limiting examples of which are described in u.s.s.n.09/613,266 (assigned to The Procter & gamble company).

The separate benefit phase of the striped liquid personal cleansing compositions may optionally comprise the following skin benefit ingredients to enhance delivery of these water-in-oil emulsion materials on the skin. Non-limiting examples of these optional ingredients include: vitamins and their derivatives (such as ascorbic acid, vitamin E, tocopherol acetate, and the like), sunscreens, thickeners (such as polyol alkoxylates, available from Croda under the trade name crotix), preservatives for maintaining the antimicrobial integrity of cleansing compositions, anti-acne agents (resorcinol, salicylic acid, and the like), antioxidants, skin soothing and healing agents (such as aloe vera extract, allantoin, and the like), chelating and sequestering agents, and agents suitable for aesthetic purposes (such as fragrances, essential oils, skin sensates, pigments, pearlescers (such as mica and titanium dioxide), lakes, colorants, and the like (such as clove oil, menthol, camphor, eucalyptus oil, and eugenol)).

Application method

The striped personal cleansing compositions of the present invention are preferably topically applied to a desired area of skin or hair in an amount sufficient to effectively deliver a skin conditioning agent to the area to which they are applied, or to provide an effective skin conditioning benefit. The composition is applied directly or indirectly to the skin by using a cleansing puff, towel, sponge or other implement. The composition is preferably diluted with water before, during or after topical application and then subsequently rinsed or wiped off the applied surface, preferably rinsed off the applied surface with a combination of water or a water-insoluble substrate and water.

Preparation method

The personal cleansing compositions of the present invention may be prepared by any known or otherwise effective technique suitable for making and formulating the desired striped product form. It is effective to combine the toothpaste tube filling technique with a rotary table design. In addition, the compositions of the present invention can be prepared by the methods and apparatus disclosed in U.S. patent 6,213,166, which is incorporated herein by reference. The method and apparatus allow two or more compositions to be filled into a single container in a spiral configuration. This method requires the use of at least two nozzles to fill the container. When the composition is introduced into the container, the container is placed on a static mixer and rotated.

Alternatively, it is particularly effective to combine at least two phases by first placing the separate compositions in separate reservoirs with associated pumps and hoses. The phase is then pumped into a single combining zone in a predetermined amount. The phases are then moved from the combining zone to the mixing zone and the phases are agitated in the mixing zone so that a single resulting product exhibits a unique phase pattern. The next step involves pumping the product agitated in the mixing zone via a hose to a separate nozzle, then placing the nozzle into the container and filling the container with the resulting product. Specific non-limiting examples of such methods, as they apply to specific embodiments of the present invention, are described in the following examples.

If the personal cleansing compositions comprise stripes of multiple colors, it may be desirable to package these compositions in a transparent package so that the consumer can see the pattern of the composition through the package. Due to the viscosity of the composition of the present invention, it is also desirable to include instructions that instruct the consumer to store the package upside down on its lid to facilitate dispensing.

Analytical method

Volume of foam

The lather volume of the striped liquid personal cleansing composition was measured using a measuring cylinder and a rotating device. A1,000 mL graduated cylinder was selected, which was labeled incrementally every 10mL and from its inner base to 1,000mL of the label was 14.5 inches (34.8cm) in height (e.g., Pyrex No. 2982). Distilled water (100 g at 23 ℃) was added to the graduated cylinder. The cylinder is fixed in a rotating device, which fixes the cylinder by means of a rotating shaft, which traverses the excess cylinder centre. One gram of the complete personal cleansing composition (0.5 g cleansing phase and 0.5g benefit phase when total product is measured, or 1g cleansing phase when only cleansing phase is measured) is added to the graduated cylinder and the graduated cylinder is sealed. The cylinder was rotated at 10 revolutions for about 20 seconds and stopped in the vertical position, completing the first revolution. A timer was set for 30 seconds to allow the resulting foam to drain. After 30 seconds of the above-described drainage procedure, the first foam volume was measured with a mark of closest 10mL by recording the height of the foam from the bottom (mL), including all water drained to the bottom on which the foam floated.

If the upper surface of the foam is not flat, the lowest height in the middle of the cross section of the measuring cylinder that is likely to be seen is taken as the first foam volume (marked in mL). If the foam is so coarse that only one or a few foam cells ("bubbles") extend throughout the cylinder, the height of the space that requires at least 10 foam cells to fill is taken as the first foam volume or as a standard in mL from the bottom. Any foam cells larger than 1 inch in size, wherever they are generated, will be considered air rather than foam. If the foam at the top is in its own continuous layer, the foam that collects at the top of the cylinder without draining is also included in the measurement, the thickness of the layer is measured using a ruler, and the ml of foam collected there is added to the measured ml of foam from the bottom. The maximum foam height was 1,000mL (even though the total foam height exceeded 1,000mL marked on the graduated cylinder). After 1 minute from the end of the first revolution, a second revolution is started, at the same speed and duration as the first revolution. After a discharge time of 30 seconds, the foam volume of the second time was recorded in the same manner as the first time. A third rotation was completed and the third foam volume was measured in the same manner, with the same dwell time between each discharge and measurement.

After each measurement, the foam volume values were added together and the sum of the three measurements was determined as the total foam volume, scaled in mL. The Flash bubble Volume is the value of the bubble Volume obtained after the first rotation only, indicated in mL, i.e. the first bubble Volume. In this test, the composition according to the invention performed significantly better than a similar composition in the form of a conventional emulsion.

Viscosity of liquid personal cleansing compositions

The viscosity of the liquid personal cleansing compositions herein can be measured using a Wells-Brookfield Cone/Plate Model DV-II + viscometer. At 25 ℃ with a volume of 2.4cm⁰A cone measurement system was used to measure where there was a gap of 0.013mm between the two small needles located on the cone and the plate, respectively. The measurement was performed by injecting 0.5mL of the sample to be analyzed between the cone and the plate, and then rotating the cone at a set rotation speed of 1 rpm. The rotational resistance of the cone generates a torque that is proportional to the shear stress of the liquid sample. The torque value of the sample 2 minutes after filling was read and converted to absolute centipoise units (mPa · s) by viscometer calculation based on the geometric constant of the cone, the rotation speed and the stress related to the torque.

Yield point of liquid personal cleansing compositions

The yield point of liquid personal cleansing compositions can be determined using a Carrimed CSL 100 controlled stress rheometer. For purposes herein, yield point is the value of stress required to produce a 1% strain on a liquid personal cleansing composition. The measurements were made at 77 deg.F (23 deg.C) using a 4cm 2 deg.C cone measurement system with a 51 micron gap. The shear stress was applied at programmed intervals of 5 minutes (typically about 0.06 dynes/cm to about 500 dynes/cm). This is exactly the stress value that caused the sample to deform, and the shear stress is plotted against strain. From this curve, the yield point of the liquid personal cleansing composition can be calculated.

Examples

The following examples further describe and demonstrate embodiments within the scope of the present invention. These examples are given solely for the purpose of illustration and are not to be construed as limitations of the present invention, as many variations thereof are possible without departing from the spirit and scope of the invention. All exemplified amounts are concentrations by weight of the total composition, i.e., weight percentages, unless otherwise indicated.

Each of the exemplified compositions provides improved deposition or effectiveness of the skin conditioning agent or optional ingredients delivered by the respective prepared compositions.

Examples 1 to 3

The following examples described in Table 1 are non-limiting of the personal cleansing compositions herein

Examples are given.

Table 1: cleansing phase and benefit phase compositions

	Example 1	Example 2	Example 3
				Composition (I)	Weight percent (%)	Weight percent (%)	Weight percent (%)
I. Cleansing phase composition
				Lauryl polyoxyethylene ether-3 ammonium sulfate	3.0	3.0	3.0
Sodium N-lauramidoethyl-N-hydroxyethyl acetate (Miranol L-32Ultra, from Rhodia)	16.7	16.7	16.7
				Ammonium dodecyl sulfate	1.0	1.0	1.0
Lauric acid	0.9	0.9	0.9
				Glycerol tris (hydroxystearate) (Thixcin R)	2.0	2.0	2.0
Guar hydroxypropyl trimonium chloride (N-Hance 3196, available from Aqualon)	0.17	0.75	0.75
				Guar hydroxypropyl trimonium chloride (Jaguar C-17, available from Rhodia)	0.58	-	-
Polyquaternary ammonium 10(UCARE Polymer JR-30M from Amerchol)	0.45	-	-
				Polymethacrylamidopropyltrimonium chloride (Polycare 133 from Rhodia)	-	0.24	-
Polyquaternary ammonium salt-39 (Merqurt Plus 3300 from Calgon)	-	0.81	-
				PEG 90M (Polyox WSR301 from Union Carbide)	0.25	-	-
PEG-14M (Polyox WSR N-3000H available from Union carbide)	0.45	2.45	2.45
				Linoleamidopropyl biomimetic phospholipid ammonium chloride polydimethylsiloxane (Monasil PLN, available from Uniqema)	-	1.0	4.0
Glycerol	1.4	4.9	4.9
				Sodium chloride	0.3	0.3	0.3
Sodium benzoate	0.25	0.25	0.25
				Ethylenediaminetetraacetic acid disodium salt	0.13	0.13	0.13
1, 3-dimethylol-5, 5-dimethylhydantoin	0.37	0.37	0.37
				Citric acid	1.6	0.95	0.95
Titanium dioxide	0.5	0.5	0.5
				Perfume	0.5	0.5	0.5
Water (W)	Proper amount of	Proper amount of	Proper amount of
Benefit composition
				Vaseline	80	80	80
PEG-30 Dipolyhydroxystearate (Arlacel P135)	1	1	1
				Water (W)	19	19	19

The cleansing phase and benefit phase compositions described above can be prepared by conventional formulation and mixing techniques. Cleaning composition 1 was prepared by first producing the following premix: citric acid was premixed in water at a ratio of 1: 3, guar polymer and Jaguar C-17 and N-Hance3196 were premixed in water at a ratio of 1: 10, UCARE and JR-30M were premixed in water at a ratio of about 1: 30, and Polyox and PEG-90M and PEG-14M were premixed in glycerol at a ratio of about 1: 2. The following ingredients were then added to the main mixing vessel: ammonium lauryl sulfate, polyoxyethylene lauryl ether-3 ammonium sulfate, citric acid premix, miranol L-32ultra, sodium chloride, sodium benzoate, disodium ethylenediaminetetraacetate, lauric acid, thixcinR, guar premix, UCARE premix, Polyox premix, and the balance water. The vessel was then heated with stirring until it reached 190 ° F (88 ℃). It was allowed to mix for about 10 minutes. The batch was cooled with a cold water bath with slow stirring until it reached 110 ° F (43 ℃). The following ingredients were added: 1, 3-dimethylol-5, 5-dimethylhydantoin, spice, titanium dioxide. Stirring until a homogeneous solution is formed.

Cleaning composition 2 was prepared by first producing the following premix: citric acid was premixed in water at a ratio of 1: 3, guar polymer and N-Hance3196 were premixed in water at a ratio of 1: 10, and Polyox and PEG-14M were premixed in glycerol at a ratio of about 1: 2. The following ingredients were then added to the main mixing vessel: ammonium lauryl sulfate, polyoxyethylene lauryl ether-3 ammonium sulfate, citric acid premix, Miranol L-32 ultrara, sodium chloride, sodium benzoate, disodium ethylenediaminetetraacetate, lauric acid, Thixcin R, guar premix, Polyox blend, Polycare 133, Merquat Plus 3300, Monosil PLN, and the balance water. The vessel was then heated with stirring until it reached 190 ° F (88 ℃). It was allowed to mix for about 10 minutes. The batch was then cooled with a cold water bath with slow stirring until it reached 110 ° F (43 ℃). Finally, the following ingredients were added: 1, 3-dimethylol-5, 5-dimethylhydantoin, a fragrance, titanium dioxide, and mixing until a homogeneous solution is formed.

Cleaning composition 3 was prepared by first producing the following premix: citric acid was premixed in water at a ratio of 1: 3, guar polymer and N-Hance3196 were premixed in water at a ratio of 1: 10, and Polyox and PEG-14M were premixed in glycerol at a ratio of about 1: 2. The following ingredients were then added to the main mixing vessel: ammonium lauryl sulfate, polyoxyethylene lauryl ether-3 ammonium sulfate, citric acid premix, Miranol L-32ultra, sodium chloride, sodium benzoate, disodium ethylenediaminetetraacetate, lauric acid, Thixcin R, guar premix, Polyox premix, Monasil PLN, and the balance water. The vessel was then heated with stirring until it reached 190 ° F (88 ℃). The vessel was stirred for about 10 minutes. The batch was then cooled with a cold water bath with slow stirring until it reached 110 ° F (43 ℃). Finally, the following ingredients were added: 1, 3-dimethylol-5, 5-dimethylhydantoin, a fragrance, titanium dioxide, and mixing until a homogeneous solution is formed.

Beneficial phase

The beneficial phase can be prepared by adding petrolatum into the main mixing vessel. The vessel was then heated to 185 ° F and Arlacel P135 was added. Then, water was slowly added with stirring. Stirring was continued until homogeneous.

The cleansing phase and benefit phase can be packaged in a single container by first placing separate compositions in separate reservoirs with attached pumps and hoses. The phase is then pumped into a single combining zone in a predetermined amount. The phases are then moved from the combining zone to the mixing zone and the phases are agitated in the mixing zone so that a single resulting product exhibits a unique phase pattern. The next step involves pumping the product agitated in the mixing zone via a hose to a separate nozzle, then placing the nozzle into the container and filling the container with the resulting product. During filling, the sample station rotates the bottle to create a striped appearance.

Examples 4 to 6

The following examples described in Table 2 are non-limiting of the personal cleansing compositions herein

Examples are given.

Table 2: cleansing phase and benefit phase compositions

	Example 4	Example 5	Example 6
				Composition (I)	Weight percent (%)	Weight percent (%)	Weight percent (%)
I. Cleansing phase composition
				Miracare SLB-365 (from Rhodia) (sodium polyoxyethylene tridecyl ether sulfate, sodium N-lauramidoethyl-N-hydroxyethyl acetate, cocomonoethanolamide)	47.4	47.4	47.4
Guar hydroxypropyl trimonium chloride (N-Hance 3196, available from Aqualon)		-	0.7
				PEG 90M (Polyox WSR301 from Dow Chemical)	-	-	0.2
Coconut oil based monoethanolamide	3.0	-	-
				Polyeare 133	-	-	0.4
Lauric acid	-	2.0	2.0
				Sodium chloride	3.5	3.5	3.5
Ethylenediaminetetraacetic acid disodium salt	0.05	0.05	0.05
				1, 3-dimethylol-5, 5-dimethylhydantoin	0.67	0.67	0.67
Citric acid	0.4	0.4	0.4
				Perfume	2.0	2.0	2.0
Water (W)	Proper amount of	Proper amount of	Proper amount of
				(pH)	(6.0)	(6.0)	(6.0)
Composition of benefit phase
				Vaseline	80	80	80
PEG-30 Dipolyhydroxystearate (Arlacel P135)	1	1	1
				Water (W)	19	19	19

The above compositions may be prepared by conventional formulation and mixing techniques. The cleansing phase composition was prepared by first adding citric acid to water in a 1: 3 ratio to form a citric acid premix. The following ingredients were then added to the main mixing vessel in the following order: water, Miracare SLB-354, sodium chloride, sodium benzoate, disodium edetate, 1, 3-dimethylol-5, 5-dimethylhydantoin. The primary mixing vessel begins to stir. The polymer (polyquaternary ammonium salt 10, Jaguar C-17 or N-Hance3196) was dispersed in water in a 1: 10 ratio in a separate mixing vessel to form a polymer premix. The fully dispersed polymer premix was added to the main mixing vessel with continuous stirring. Polyox WSR301 was dispersed in water and then added to the main mixing vessel. The remaining water and perfume were then added to the batch. The batch was kept under stirring until a homogenous solution was formed.

Beneficial phase

The beneficial phase can be prepared by adding petrolatum into the main mixing vessel. The vessel was then heated to 185 ° F (85 ℃) and Arlacel P135 was added. Then, water was slowly added with stirring. Stirring was continued until homogeneous.

The cleansing phase and benefit phase can be packaged in a single container by first placing separate compositions in separate reservoirs with attached pumps and hoses. The phase is then pumped into a single combining zone in a predetermined amount. The phases are then moved from the combining zone to the mixing zone and the phases are agitated in the mixing zone so that a single resulting product exhibits a unique phase pattern. The next step involves pumping the product agitated in the mixing zone via a hose to a separate nozzle, then placing the nozzle into the container and filling the container with the resulting product. During filling, the sample station rotates the bottle to create a striped appearance.

Examples 7 to 9

The following examples described in Table 3 are non-limiting of the personal cleansing compositions herein

Examples are given.

Table 3: cleansing phase and benefit phase compositions

	Example 7	Example 8	Example 9
				Composition (I)	Weight percent (%)	Weight percent (%)	Weight percent (%)
I. Cleansing phase composition
				Miracare SLB-365 (from Rhodia) (sodium polyoxyethylene tridecyl ether sulfate, sodium N-lauramidoethyl-N-hydroxyethyl acetate, cocomonoethanolamide)	47.4	47.4	47.4
Sodium chloride	3.5	3.5	3.5
				Ethylenediaminetetraacetic acid disodium salt	0.05	0.05	0.05
1, 3-dimethylol-5, 5-dimethylhydantoin	0.67	0.67	0.67
				Citric acid	0.4	0.4	0.4
Perfume	2.0	2.0	2.0
				Water (W)	Proper amount of	Proper amount of	Proper amount of
(pH)	(6.0)	(6.0)	(6.0)
				Composition of benefit phase
Vaseline	80	80	80
				PEG-30 Dipolyhydroxystearate (Arlacel P135)	1	1	1
Water (W)	19	19	19

The above compositions may be prepared by conventional formulation and mixing techniques. The cleansing phase composition was prepared by first adding citric acid to water in a 1: 3 ratio to form a citric acid premix. The following ingredients were added to the main mixing vessel in the following order: water, miracareSLB-354, sodium chloride, sodium benzoate, disodium edetate, 1, 3-dimethylol-5, 5-dimethylhydantoin. The primary mixing vessel begins to stir. Next, the perfume was added to the batch. The batch was kept under stirring until a homogenous solution was formed.

Beneficial phase

The beneficial phase can be prepared by adding petrolatum into the main mixing vessel. The vessel was then heated to 185 ° F (85 ℃) and Arlacel P135 was added. Then, water was slowly added with stirring. Stirring was continued until homogeneous.

The cleansing phase and benefit phase can be packaged in a single container by first placing separate compositions in separate reservoirs with attached pumps and hoses. The phase is then pumped into a single combining zone in a predetermined amount. The phases are then moved from the combining zone to the mixing zone and the phases are agitated in the mixing zone so that a single resulting product exhibits a unique phase pattern. The next step involves pumping the product agitated in the mixing zone via a hose to a separate nozzle, then placing the nozzle into the container and filling the container with the resulting product. During filling, the sample station rotates the bottle to create a striped appearance.

Claims (14)

1. A striped personal cleansing composition comprising:

(a) a first stripe comprising a cleansing phase comprising a surfactant and water; and

(b) at least one additional stripe comprising a benefit phase comprising a water-in-oil emulsion;

wherein the cleansing phase and the benefit phase are in direct contact with each other and remain stable.

2. A striped personal cleansing composition according to claim 1, wherein the cleansing phase comprises:

(i) at least one anionic surfactant;

(ii) at least one electrolyte;

(iii) at least one alkanolamide;

(iv) water; and

wherein the cleansing phase is non-Newtonian shear thinning and has a viscosity equal to or greater than 3000 cps.

3. A striped personal cleansing composition according to any one of the preceding claims, wherein the surfactant is present in an amount from 3% to 60% by weight of the aqueous cleansing phase.

4. A striped personal cleansing composition according to claim 2, wherein the electrolyte comprises:

i) an anion selected from the group consisting of phosphate, chloride, sulfate, citrate, and mixtures thereof, and

ii) a cation selected from the group consisting of sodium, ammonium, potassium, magnesium, and mixtures thereof; and wherein the electrolyte is present in an amount of 0.1% to 15% by weight of the cleansing phase.

5. A striped personal cleansing composition according to claim 1, wherein the benefit phase comprises an emulsifier having an HLB value of less than 10, and wherein the emulsifier is selected from PEG-30 dipolyhydroxystearate, dimethicone copolyol, and mixtures thereof.

6. A striped personal cleansing composition according to any one of the preceding claims, wherein the benefit phase comprises from 10% to 90% oil.

7. A striped personal cleansing composition according to any one of the preceding claims, comprising a density modulator; preferably wherein the density modulator is a hollow microsphere.

8. A striped personal cleansing composition according to any one of the preceding claims further comprising a cationic deposition polymer in the cleansing phase; preferably wherein the cationic deposition polymer is selected from the group consisting of cationic cellulose derivatives, cationic guar derivatives, cationic synthetic polymers, and mixtures thereof.

9. A striped personal cleansing composition according to any one of the preceding claims, wherein the cleansing phase further comprises a lamellar structurant; preferably wherein the lamellar structurant is selected from the group consisting of fatty acids, fatty esters, glycerol tri (hydroxystearate), fatty alcohols, and mixtures thereof.

10. A striped personal cleansing composition according to any one of the preceding claims, wherein at least one phase comprises a colorant; preferably wherein the cleansing phase and benefit phase visually form a pattern within the package; more preferably wherein the pattern is selected from the group consisting of striped, marbled, geometric, and mixtures thereof; even more preferably wherein the composition is contained in a transparent container.

11. A striped personal cleansing composition according to any one of the preceding claims, wherein the composition is packaged in a container with instructions indicating that the container is stored upside down.

12. A striped personal cleansing composition according to any one of the preceding claims, wherein the composition comprises a skin care active, wherein the skin care active is selected from the group consisting of vitamins and derivatives thereof, sunscreens, thickeners, preservatives, anti-acne medications, antioxidants, skin soothing and healing agents, chelating and sequestering agents, fragrances, essential oils, skin sensates, pigments, pearlescent agents, lakes, colorants, and mixtures thereof.

13. A striped personal cleansing composition comprising:

a) a first stripe comprising a cleansing phase comprising from 1% to 50%, by weight of the cleansing phase, of a surfactant selected from the group consisting of anionic surfactants, nonionic surfactants, zwitterionic surfactants, cationic surfactants, soaps, and mixtures thereof;

wherein the cleansing phase is non-Newtonian shear thinning, has a viscosity equal to or greater than 3,000cps, and has a yield value of at least 0.1 Pa; and

b) at least one additional stripe comprising a benefit phase comprising a water-in-oil emulsion comprising an oil, an emulsifier, and water;

wherein the ratio of the cleansing phase to the benefit phase is from 1: 9 to 99: 1; and

wherein the cleansing phase and the benefit phase are present in stripes, wherein the stripes are at least 0.1mm wide and at least 1mm long in size; and wherein the cleansing phase and the benefit phase are in direct contact with each other and remain stable.

14. A method of delivering skin conditioning benefits to the skin or hair, the method comprising the steps of:

a) dispersing an effective amount of the composition of claim 1 on an implement selected from the group consisting of a cleaning puff, a towel, a sponge, and a human hand;

b) topically applying the composition to the skin or hair using the appliance; and

c) removing said composition from said skin or hair by rinsing with water.