Patent Application
20170165165
The present invention relates to a deep cleansing hair care composition and method that provide good in-use experience and superior hair benefits when dry.
Typically, clarifying shampoos are employed to provide a high level of cleaning for hair, good lather and clean rinse feel. However, such shampoos are perceived to strip the natural moisturizers from the hair fibers, as they result in high wet hair friction that is translated into poor wet feel and high dry hair friction that is translated into poor, non-moisturized dry hair feel. The poor wet feel and high dry hair friction are particularly noticeable in the case of consumers that have chemically or physically damaged hair resulting from permanent or semi-permanent styling treatments, oxidative coloring treatments, thermal treatments, etc. To remedy the poor wet feel and the high dry hair friction, consumers often turn to traditional conditioning shampoos which can provide good wet and dry hair feel. However, many of these products do not possess strong cleansing ability, they generate lower volume of lather during use, they do not provide clean rinse feel and they can allow more soils, sebum and other residues to remain on the hair after shampooing. In addition, the conditioning agents themselves can contribute to the feeling of residue that is added on the hair surface during the shampoo and/or conditioner process that they may accumulate in each cycle. This can result in hair weigh-down with low volume that is perceived as greasy, and that may also be perceived by the consumer as lanky, non-bouncy and difficult to style. Thus, there is a need for the development of shampoo compositions that provide strong cleansing ability and at the same time contribute to high hair volume, good wet and dry hair feel, and bouncy, easy to style hair.
Described herein is a deep cleansing hair care composition that enables a thorough removal of soils such as sebum, conditioning, styling and other residues from hair surface in order to achieve clean hair with high hair volume, smooth dry hair feel and elastic hair fibers that impart bouncy hair. In addition, the hair care composition described herein results in an excellent in-use experience by providing rich lather, good wet conditioning feel, and a clean rinse feel. Additionally, the hair care composition is stable and uniform and can be clear, translucent or opaque.
The invention relates to a hair care composition comprising: from about 5 to about 40 weight % of the hair care composition one or more detersive surfactants; wherein, the detersive surfactant comprises less than about 10 weight % of the hair care composition of a linear anionic surfactant selected from the group consisting of:
While the specification concludes with claims which particularly point out and distinctly claim the invention, it is believed that the provided invention will be better understood from the following description.
In all embodiments of the present invention, all percentages and ratios used herein are by weight of the total composition, unless otherwise designated. All measurements are understood to be made at ambient conditions, where “ambient conditions” means conditions at about 25° C., under about one atmosphere of pressure, and at about 50% relative humidity (RH), unless otherwise designated. All numeric ranges are inclusive of narrower ranges; delineated upper and lower range limits are combinable to create further ranges not explicitly delineated. All numerical amounts are understood to be modified by the word “about” unless otherwise specifically indicated. All weights and % weights as they pertain to listed ingredients are based on the active level and do not include carriers or by-products that may be included in commercially available materials, unless otherwise specified. The number of significant digits conveys neither a limitation on the indicated amounts nor on the accuracy of the measurements. The term “molecular weight” or “M.Wt.” as used herein refers to the weight average molecular weight unless otherwise stated. The weight average molecular weight may be measured by gel permeation chromatography. “QS” means sufficient quantity for 100%.
“Dermatologically acceptable” means that the compositions or components described are suitable for use in contact with human skin tissue without undue toxicity, incompatibility, instability, allergic response, and the like.
“Safe and effective amount” means an amount of a compound or composition sufficient to significantly induce a positive benefit.
“Soluble” means at least about 0.1 g of solute dissolves in 100 ml of solvent, at 25° C. and 1 atm of pressure.
The term “substantially free from” or “substantially free of” as used herein means less than about 1%, or less than about 0.8%, or less than about 0.5%, or less than about 0.3%, or about 0%, or from about 1% to 0%, or about 0.8% to 0%, or about 0.3% to 0% by total weight of the composition.
“Hair,” as used herein, means mammalian hair including scalp hair, facial hair and body hair, particularly hair on the human head and scalp.
“Cosmetically acceptable,” as used herein, means that the compositions, formulations or components described are suitable for use in contact with human keratinous tissue without undue toxicity, incompatibility, instability, allergic response, and the like. All compositions described herein which have the purpose of being directly applied to keratinous tissue are limited to those being cosmetically acceptable.
“Derivatives,” as used herein, includes but is not limited to, amide, ether, ester, amino, carboxyl, acetyl, acid, salt and/or alcohol derivatives of a given compound.
“Polymer,” as used herein, means a chemical formed from the polymerisation of two or more monomers. The term “polymer” as used herein shall include all materials made by the polymerisation of monomers as well as natural polymers. Polymers made from only one type of monomer are called homopolymers. Polymers made from two or more different types of monomers are called copolymers. The distribution of the different monomers can be calculated statistically or block-wise—both possibilities are suitable for the present invention. Except if stated otherwise, the term “polymer” used herein includes any type of polymer including homopolymers and copolymers.
Typical clarifying shampoos, which contain minimal conditioning agents, provide superior cleansing via removal of soils, sebum and other residues. However, they are perceived as hair stripping, with an in-use wet feel that does not provide the signal of conditioning. In addition, the hair after washing with clarifying shampoo is not smooth. The hair care compositions described herein which contain a carrier, a significant portion (about 20% to about 80%) of which is a water-miscible polyol, such as glycerin, are able to minimize undesirable hair stripping. These compositions not only provide superior removal of soils, but also show excellent lather quality and clean rinse feel. The polyols may contribute to superior cleansing by reducing the size of the surfactant micelle structure. This, in turn, can result in rapid transfer of the micelles on hair fiber surfaces, and rapid removal of soils from these surfaces. It is surprisingly observed that the lather created during the cleansing process of the inventive compositions is creamy and resilient, providing slippery, conditioning feel. The superior cleansing is associated with volume expansion of the dry hair. It is also surprising that the inventive compositions show larger hair expansion than traditional clarifying shampoos (see results in Table 1 for Ex 1 to Ex 3 versus Comparative Ex 1 and Comparative Ex 2). Additionally, the friction of dry hair that has been washed by the inventive compositions is below the expected level (resulting in hair smooth feel), as the corresponding surfaces are substantially free from oils, sebum and other hydrophobic materials. This may be the result of the plasticizing effect of the polyol (such as glycerin) on keratin protein and/or the expected higher water absorption of moisture in hair fibers because of the presence of residual amount of glycerin.
Described herein is a shampoo composition comprising a detersive surfactant, and an aqueous carrier comprising water and polyol, wherein the weight ratio of polyol to water is from about 0.4 or higher, wherein the polyol content is from about 20 to 80 weight % of the composition, and wherein the water content is from about 9% to about 75% by weight of the composition.
The hair care composition may comprise from about 4 to about 40 weight % of one or more detersive surfactant. The hair care composition may comprise from about 0 to about 10 weight percent of alkyl sulfates with linear alkyl group. An alkyl sulfate having a linear alkyl group is a sulfate with an alkyl group with a formula of CH3(CH2)n-, wherein each carbon is bound to two neighbors and two hydrogen atoms, except the terminal carbon which is bound to three hydrogen atoms
The hair care composition may further comprise a cationic polymer.
The shampoo composition delivers consumer desired cleansing power (low residues on hair surface) in addition to good lather, good conditioning wet feel, clean rinse feel, high hair volume, smooth non-coated dry hair feel, and moisturized bouncy hair that is easy to style.
Water is a small molecule that moves in and out of damaged hair cuticles depending on the environment change. It can weaken hair fibers when wet, it can make hair fibers brittle when dry and it can cause hair color to fade by carrying color pigment out of hair. Polyols such as glycerin adds elasticity to damaged hair fibers and results in hair that is less sensitive to environment changes.
Shampoos with high levels of polyol such as glycerin can also affect surfactant packing. The micelles in the hair care composition are more segregated and therefore transport onto the hair surface quicker which can result in improved soil removal.
Typically, the viscosity of an aqueous solution is increased when the glycerin content is increased (Segur, J. B. and Oberstar, H., Ind. & Eng. Chem., 43: 2117-2120, 1951). However, the viscosity of the hair care composition of the present invention decrease when glycerin content is increased in the glycerin and water mixture carrier. Consumers traditionally prefer products with a viscosity of about 1000 cps to about 15,000 cps which result in enough viscosity so that they do not immediately run out of the hand after dispensing; however, too viscous products are difficult to spread onto the hair.
Consumer testing indicates that the hair care compositions described herein deliver soft and moisturized feel on damaged hair. Additionally, consumer testing indicates the hair care compositions described herein deliver one or more consumer benefits including, but not limited to rich and creamy lather, deep clean, scalp comfort, volume and shine.
A. Detersive Surfactant
The shampoo composition comprises one or more detersive surfactants, which provides cleaning performance to the composition. The one or more detersive surfactants in turn may comprise anionic surfactants, amphoteric or zwitterionic surfactants, nonionic surfactants or mixtures thereof. Various examples and descriptions of detersive surfactants are set forth in U.S. Pat. No. 6,649,155; U.S. Patent Application Publication No. 2008/0317698; and U.S. Patent Application Publication No. 2008/0206355, which are incorporated herein by reference in their entirety.
The concentration of the detersive surfactant component in the shampoo composition should be sufficient to provide the desired cleaning and lather performance. Generally, ranges are from about 5 wt % to about 40 wt %, from about 5 wt % to about 35 wt %, from about 8 wt % to about 35 wt %, from about 10 wt % to about 30 wt %, from about 15 wt % to about 25%, from about 10 wt % to about 20 wt % by weight of the composition.
The total surfactants can include, but are not limited to nonionic, amphoteric, branched anionic surfactants, linear anionic surfactants and combinations thereof.
1. Branched Anionic Surfactant
Suitable branched anionic surfactant, with a tail having an alkyl chain with 8 carbon atoms or higher, include, but are not limited to the following surfactants: sodium undecyl sulfate, sodium trideceth sulfate, sodium tridecyl sulfate, sodium C8-13 alkyl sulfate, sodium C8-15 alkyl sulfate, sodium C8-18 alkyl sulfate, sodium C8-13 pareth sulfate, sodium C8-13 pareth-n sulfate, sodium C8-14 pareth-n sulfate, and combinations thereof. Other salts of all the aforementioned surfactants are useful, such as TEA, DEA, ammonia, potassium salts. Useful alkoxylates include the ethylene oxide, propylene oxide and EO/PO mixed alkoxylates. Phosphates, carboxylates and sulfonates prepared from branched alcohols are also useful anionic branched surfactants. Branched surfactants can be derived from synthetic alcohols such as the primary alcohols from the liquid hydrocarbons produced by Fischer-Tropsch condensed syngas, for example Safol™ 23 Alcohol available from Sasol North America, Houston, Tex.; from synthetic alcohols such as Neodol™ 23 Alcohol available from Shell Chemicals, USA; from synthetically made alcohols such as those described in U.S. Pat. No. 6,335,312 issued to Coffindaffer, et al on Jan. 1, 2002. Suitable examples of alcohols are Safol™ 23 and Neodol™ 23. Suitable examples of alkoxylated alcohols are Safol™ 23-3 and Neodol™ 23-3. Sulfates can be prepared by conventional processes to high purity from a sulfur based SO3 air stream process, chlorosulfonic acid process, sulfuric acid process, or Oleum process. Preparation via air stream in a falling film reactor is a preferred sulfation process. The anionic surfactant may also be STnS, wherein n can define average moles of ethoxylation. n can range from about 0 to about 3.5, from about 0.5 to about 3.5, from about 1.1 to about 3.
2. Linear Anionic Surfactant
Suitable linear anionic detersive surfactant components for use in the composition herein include those which are known for use in hair care or other personal care shampoo compositions. The anionic detersive surfactant may be a combination of sodium lauryl sulfate and sodium laureth-n sulfate. Alternatively, the anionic detersive surfactant can be sodium laureth sulfate with an average of one mole ethoxylate. The concentration of the anionic surfactant component in the composition should be sufficient to provide the desired cleaning and lather performance.
Anionic surfactants suitable for use herein include alkyl sulfates and alkyl ether sulfates of the formula ROSO3M and RO(C2H4O)xSO3M, wherein R is alkyl or alkenyl of from about 8 to about 18 carbon atoms, x is 1 to 10, and M is a water-soluble cation such as ammonium, sodium, potassium, and triethanolamine cation or salts of the divalent magnesium ion with two anionic surfactant anions . The alkyl ether sulfates may be made as condensation products of ethylene oxide and monohydric alcohols having from about 8 to about 24 carbon atoms. The alcohols can be derived from fats such as coconut oil, palm oil, palm kernel oil, or tallow, or can be synthetic.
Some non-limiting examples of linear anionic surfactants are:
Alkyl Sulfates
Alkyl Ether Sulfates
where R═C8-C18 alkyl (linear, saturated or unsaturated) or mixtures thereof and M+=monovalent cation, such as Sodium Cocoglyceryl Ether Sulfonate
Alpha olefin sulfonates prepared by sulfonation of long chain alpha olefins. Alpha olefin sulfonates consist of mixtures of alkene sulionates,
Hydroxyalkyl sulfonates,
where R═C4-C18 alkyl or mixtures thereof and M+=monovalent cation. Examples include Sodium C12-14 Olefin Sulfonate (R═C9-C10 alkyl, M+=Na+) and Sodium C 14-16 Olefin Sulfonate (R═C10-C12 alkyl, M+=Na+).
Examples of additional anionic surfactants suitable for use herein include, but are not limited to, ammonium lauryl sulfate, ammonium laureth sulfate, triethylamine lauryl sulfate, triethylamine laureth sulfate, triethanolamine lauryl sulfate, triethanolamine laureth sulfate, monoethanolamine lauryl sulfate, monoethanolamine laureth sulfate, diethanolamine lauryl sulfate, diethanolamine laureth sulfate, lauric monoglyceride sodium sulfate, sodium lauryl sulfate, sodium laureth sulfate, potassium laureth 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 trideceth-1 sulfate, sulfate, sodium trideceth-2 sulfate, sulfate, sodium trideceth-3 sulfate, sodium tridecyl sulfate, sodium methyl lauroyl taurate, sodium methyl cocoyl taurate, sodium lauroyl isethionate, sodium cocoyl isethionate, sodium laurethsulfosuccinate, sodium laurylsulfosuccinate, sodium tridecyl benzene sulfonate, sodium dodecyl benzene sulfonate, and mixtures thereof.
Still other suitable anionic surfactants are the reaction products of fatty acids esterified with isethionic acid and neutralized with sodium hydroxide. Other similar anionic surfactants are described in U.S. Pat. Nos. 2,486,921; 2,486,922; and 2,396,278, which are incorporated herein by reference in their entirety. if the hair care composition comprises an anionic linear alkyl sulfate/linear alkyl ether sulfate at a level exceeding about 10%, the hair care composition may further comprise from about 1% to about 15%, from about 2% to about 15%, from about 2% to about 10%, from about 2% to about 9%, from about 2% to about 8.5%, from about 2% to about 8% by weight of the hair care composition of an additional surfactant. The additional surfactant can be chosen from the group including amphoteric surfactant, zwitterionic surfactant, nonionic surfactant, and mixtures thereof. The ratio of anionic surfactant to additional surfactant is from about 0.3 to about 6; from about 0.3 to about 5.5, from about 0.3 to about 5, from about 0.5 to about 5.
Amphoteric detersive surfactants suitable for use in the shampoo composition include those surfactants 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 group such as carboxy, sulfonate, sulfate, phosphate, or phosphonate. Exemplary amphoteric detersive surfactants for use in the present shampoo composition include cocoamphoacetate, cocoamphodiacetate, lauroamphoacetate, lauroamphodiacetate, and mixtures thereof.
Zwitterionic detersive surfactants suitable for use in the shampoo composition include those surfactants broadly described as derivatives of aliphatic quaternaryammonium, 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 such as carboxy, sulfonate, sulfate, phosphate or phosphonate. In another embodiment, zwitterionics such as betaines are selected.
Non limiting examples of other anionic, zwitterionic, amphoteric or optional additional surfactants suitable for use in the shampoo composition are described in McCutcheon's, Emulsifiers and Detergents, 1989 Annual, published by M. C. Publishing Co., and U.S. Pat. Nos. 3,929,678, 2,658,072; 2,438,091; 2,528,378, which are incorporated herein by reference in their entirety. Non limiting examples of suitable zwitterionic or amphoteric surfactants are described in U.S. Pat. Nos. 5,104,646 and 5,106,609, which are incorporated herein by reference in their entirety. Non-ionic detersive surfactants suitable for use in the shampoo composition are selected from the group consisting of: Cocamide, Cocamide Methyl MEA, Cocamide DEA, Cocamide MEA, Cocamide MIPA, Lauramide DEA, Lauramide MEA, Lauramide MIPA, Myristarnide DEA, Myristarnide MEA, PEG-20 Cocamide MEA, PEG-2 Cocamide, PEG-3 Cocamide, PEG-4 Cocamide, PEG-5 Cocamide, PEG-6 Cocamide, PEG-7 Cocamide, PEG-3 Lauramide, PEG-5 Lauramide, PEG-3 Olearnide, PPG-2 Cocamide, PPG-2 Hydroxyethyl Cocamide, and mixtures thereof.
B. Aqueous Carrier
The shampoo composition comprises an aqueous carrier which is a mixture of water and a polyol. Suitable polyols include glycerin or ethylene glycol, propylene glycol, di-propylene glycol and mixtures thereof. The polyol may be glycerin. The water content of the composition is from about 9% to about 75%, from about 10% to about 65%, from about 10% to about 55%, from about 10% to about 45%, from about 10% to about 40%, and from about 10% to about 35% by weight of the composition. The polyol content is about 20% to about 80%, from about 25% to about 75%, or from about 30% to about 70%, from about 35% to about 70%, from about 40% to about 70% by weight of the total composition. The weight ratio of polyol to water is from about 0.4 to about 7, from about 0.4 to about 6.5, from about 0.4 to about 6, from about 0.4 to about 5.5, and from about 0.5 to about 5.5.
Suitable polyols also include water-miscible organic solvent such as propylene glycol, di-propylene glycol, and ethylene glycol.
The aqueous carrier may also include lower alcohols. The lower alcohols useful herein are monohydric alcohols having 1 to 6 carbons, in one aspect, ethanol and isopropanol.
In one aspect, the carrier may comprise other water-miscible or immiscible solvents with minimal or no significant concentrations of organic solvent, except as otherwise incidentally incorporated into the composition as minor ingredients of other components.
C. Cationic Polymer
The shampoo composition comprises one or more a cationic polymers. The hair care composition can comprises from about 0.05 weight % to about 2 weight % of one or more cationic polymers, from about 0.05 weight % to about 1.5 weight % of one or more cationic polymers, alternatively from about 0.05 weight % to about 1 weight % of one or more cationic polymers.
The polymer can include at least one of (a) a cationic guar polymer, (b) a cationic non-guar galactomannan polymer, (c) a cationic starch polymer, (d) a cationic copolymer of acrylamide monomers and cationic monomers, (e) a synthetic cationic polymer, (f) a cationic cellulose polymer or (g) a mixture of such polymers. The molecular weight of the cationic polymer can be from about 1,000 to about 10,000,000 and its charge density can be between about 0.1 meq/g to about 7 meq/g. The molecular weight of the cationic polymer can be from about 500,000 to about 900,000, from about 500,000 to about 800,000, and/or from about 250,000 to about 800,000.
(a) Cationic Guar Polymer
According to an embodiment of the present invention, the dispersion composition comprises a cationic guar polymer, which is a cationically substituted galactomannan (guar) gum derivatives. Guar gum for use in preparing these guar gum derivatives is typically obtained as a naturally occurring material from the seeds of the guar plant. The guar molecule itself is a straight chain mannan, which is branched at regular intervals with single membered galactose units on alternative mannose units. The mannose units are linked to each other by means of β(1-4) glycosidic linkages. The galactose branching arises by way of an α(1-6) linkage. Cationic derivatives of the guar gums are obtained by reaction between the hydroxyl groups of the polygalactomannan and reactive quaternary ammonium compounds.
The cationic guar polymer may be formed from quaternary ammonium compounds. Suitable cationic guar polymers include cationic guar gum derivatives, such as guar hydroxypropyltrimonium chloride. In an embodiment, the cationic guar polymer is a guar hydroxypropyltrimonium chloride. Specific examples of guar hydroxypropyltrimonium chlorides include the Jaguar® series commercially available from Rhone-Poulenc Incorporated, for example Jaguar® C-500, commercially available from Rhodia. Jaguar® C-500 has a charge density of 0.8 meq/g and a M.Wt. of 500,000 g/mole. Jaguar® C-17, which has a cationic charge density of about 0.6 meq/g and a M.Wt. of about 2.2 million g/mol and is available from Rhodia Company. Jaguar® C 13S which has a M.Wt. of 2.2 million g/mol and a cationic charge density of about 0.8 meq/g (available from Rhodia Company). Other suitable guar hydroxypropyltrimonium chloride are: guar hydroxypropyltrimonium chloride which has a charge density of about 1.1 meq/g and a M.Wt. of about 500,000 g/mole is available from ASI, a charge density of about 1.5 meq/g and a M.Wt. of about 500,000 g/mole is available from ASI. Other suitable guar hydroxypropyltrimonium chloride are: Hi-Care 1000, which has a charge density of about 0.7 meq/g and a M.Wt. of about 600,000 g/mole and is available from Rhodia; N-Hance 3269 and N-Hance 3270, which has a charge density of about 0.7 meq/g and a M.Wt. of about 425,000 g/mole and is available from ASI; N-Hance 3196, which has a charge density of about 0.8 and a M. Wt. Of about 1,100,000 g/mole and is available from ASI. AquaCat CG518 has a charge density of about 0.9 meq/g and a M.Wt. of about 50,000 g/mole and is available from ASI. BF-13, which is a borate (boron) free guar of charge density of about 1.1 meq/g and M. W.t of about 800,000 and BF-17, which is a borate (boron) free guar of charge density of about 1.7 meq/g and M. W.t of about 800,000 both available from ASI.
(b) Cationic Non-Guar Galactomannan Polymers
The dispersion compositions of the present invention comprise a galactomannan polymer derivative having a mannose to galactose ratio of between 5:1 and 1:1 on a monomer to monomer basis, the galactomannan polymer derivative selected from the group consisting of a cationic galactomannan polymer derivative and an amphoteric galactomannan polymer derivative having a net positive charge. As used herein, the term “cationic galactomannan” refers to a galactomannan polymer to which a cationic group is added. The term “amphoteric galactomannan” refers to a galactomannan polymer to which a cationic group and an anionic group are added such that the polymer has a net positive charge.
Galactomannan polymers are present in the endosperm of seeds of the Leguminosae family. Galactomannan polymers are made up of a combination of mannose monomers and galactose monomers. The galactomannan molecule is a straight chain mannan branched at regular intervals with single membered galactose units on specific mannose units. The mannose units are linked to each other by means of β (1-4) glycosidic linkages. The galactose branching arises by way of an α (1-6) linkage. The ratio of mannose monomers to galactose monomers varies according to the species of the plant and also is affected by climate. Non Guar Galactomannan polymer derivatives of the present invention have a ratio of mannose to galactose of greater than 2:1 on a monomer to monomer basis. Suitable ratios of mannose to galactose can be greater than about 3:1, and the ratio of mannose to galactose can be greater than about 4:1. Analysis of mannose to galactose ratios is well known in the art and is typically based on the measurement of the galactose content.
The gum for use in preparing the non-guar galactomannan polymer derivatives is typically obtained as naturally occurring material such as seeds or beans from plants. Examples of various non-guar galactomannan polymers include but are not limited to Tara gum (3 parts mannose/1 part galactose), Locust bean or Carob (4 parts mannose/1 part galactose), and Cassia gum (5 parts mannose/1 part galactose).
In one embodiment of the present invention, the galactomannan polymer derivative is a cationic derivative of the non-guar galactomannan polymer, which is obtained by reaction between the hydroxyl groups of the polygalactomannan polymer and reactive quaternary ammonium compounds. Suitable quaternary ammonium compounds for use in forming the cationic galactomannan polymer derivatives include those conforming to the general formulas 1-5, as defined above.
In another embodiment of the invention, the galactomannan polymer derivative is an amphoteric galactomannan polymer derivative having a net positive charge, obtained when the cationic galactomannan polymer derivative further comprises an anionic group.
In one embodiment of the invention the cationic non-guar galactomannan has a ratio of mannose to galactose is greater than about 4:1. The dispersion compositions of the present invention may comprise a galactomannan polymer derivative by weight of the composition. In one embodiment of the present invention, the shampoo compositions comprise from about 0.05% to about 2%, by weight of the composition, of a galactomannan polymer derivative.
(c) Cationically Modified Starch Polymer
The dispersion compositions of the present invention comprise water-soluble cationically modified starch polymers. As used herein, the term “cationically modified starch” refers to a starch to which a cationic group is added prior to degradation of the starch to a smaller molecular weight, or wherein a cationic group is added after modification of the starch to achieve a desired molecular weight. The definition of the term “cationically modified starch” also includes amphoterically modified starch. The term “amphoterically modified starch” refers to a starch hydrolysate to which a cationic group and an anionic group are added.
The dispersion compositions of the present invention comprise cationically modified starch polymers at a range of about 0.01% to about 10%, and/or from about 0.05% to about 5%, by weight of the composition.
The cationically modified starch polymers disclosed herein have a percent of bound nitrogen of from about 0.5% to about 4%.
As used herein, the term “molecular weight” refers to the weight average molecular weight. The weight average molecular weight may be measured by gel permeation chromatography (“GPC”) using a Waters 600E HPLC pump and Waters 717 auto-sampler equipped with a Polymer Laboratories
PL Gel MIXED-A GPC column (Part Number 1110-6200, 600.times.7.5 mm, 20 um) at a column temperature of 55. degree. C. and at a flow rate of 1.0 ml/min (mobile phase consisting of Dimethylsulfoxide with 0.1% Lithium Bromide), and using a Wyatt DAWN EOS MALLS (multi-angle laser light scattering detector) and Wyatt Optilab DSP (interferometric refractometer) detectors arranged in series (using a do/dc of 0.066), all at detector temperatures of 50° C., with a method created by using a Polymer Laboratories narrow dispersed Polysaccharide standard (Mw=47,300), with an injection volume of 200 μl.
The dispersion compositions of the present invention include starch polymers that is chemically modified by the addition of amino and/or ammonium groups into the starch molecules. Non-limiting examples of these ammonium groups may include substituents such as hydroxypropyl trimmonium chloride, trimethylhydroxypropyl ammonium chloride, dimethylstearylhydroxypropyl ammonium chloride, and dimethyldodecylhydroxypropyl ammonium chloride. See Solarek, D. B., Cationic Starches in Modified Starches: Properties and Uses, Wurzburg, O. B., Ed., CRC Press, Inc., Boca Raton, Fla. 1986, pp 113-125. The cationic groups may be added to the starch prior to degradation to a smaller molecular weight or the cationic groups may be added after such modification.
The cationically modified starch polymers of the present invention generally have a degree of substitution of a cationic group from about 0.1 to about 7. As used herein, the “degree of substitution” of the cationically modified starch polymers is an average measure of the number of hydroxyl groups on each anhydroglucose unit which is derivatized by substituent groups. Since each anhydroglucose unit has three potential hydroxyl groups available for substitution, the maximum possible degree of substitution is 3. The degree of substitution is expressed as the number of moles of substituent groups per mole of anhydroglucose unit, on a molar average basis. The degree of substitution may be determined using proton nuclear magnetic resonance spectroscopy (“.sup.1H NMR”) methods well known in the art. The source of starch before chemical modification can be chosen from a variety of sources such as tubers, legumes, cereal, and grains. Non-limiting examples of this source starch may include corn starch, wheat starch, rice starch, waxy corn starch, oat starch, cassaya starch, waxy barley, waxy rice starch, glutenous rice starch, sweet rice starch, amioca, potato starch, tapioca starch, oat starch, sago starch, sweet rice, or mixtures thereof.
In one embodiment of the present invention, cationically modified starch polymers are selected from degraded cationic maize starch, cationic tapioca, cationic potato starch, and mixtures thereof. In another embodiment, cationically modified starch polymers are cationic corn starch and cationic tapioca.
The starch, prior to degradation or after modification to a smaller molecular weight, may comprise one or more additional modifications. For example, these modifications may include cross-linking, stabilization reactions, phosphorylations, and hydrolyzations. Stabilization reactions may include alkylation and esterification.
The cationically modified starch polymers in the present invention may be incorporated into the composition in the form of hydrolyzed starch (e.g., acid, enzyme, or alkaline degradation), oxidized starch (e.g., peroxide, peracid, hypochlorite, alkaline, or any other oxidizing agent), physically/mechanically degraded starch (e.g., via the thermo-mechanical energy input of the processing equipment), or combinations thereof.
An optimal form of the starch is one which is readily soluble in water and forms a substantially clear (% Transmittance.gtoreq.80 at 600 nm) solution in water. The transparency of the composition is measured by Ultra-Violet/Visible (UV/VIS) spectrophotometry, which determines the absorption or transmission of UV/VIS light by a sample, using a Gretag Macbeth Colorimeter Color i 5 according to the related instructions. A light wavelength of 600 nm has been shown to be adequate for characterizing the degree of clarity of cosmetic compositions.
Suitable cationically modified starch for use in compositions of the present invention is available from known starch suppliers. Also suitable for use in the present invention is nonionic modified starch that could be further derivatized to a cationically modified starch as is known in the art. Other suitable modified starch starting materials may be quaternized, as is known in the art, to produce the cationically modified starch polymer suitable for use in the invention.
(d) Cationic Cellulose Polymers
Suitable cationic cellulose polymers are salts of hydroxyethyl cellulose reacted with trimethyl ammonium substituted epoxide, referred to in the industry (CTFA) as Polyquaternium 10 and available from Dwo/Amerchol Corp. (Edison, N.J., USA) in their Polymer LR, JR, and KG series of polymers. Other suitable types of cationic cellulose include the polymeric quaternary ammonium salts of hydroxyethyl cellulose reacted with lauryl dimethyl ammonium-substituted epoxide referred to in the industry (CTFA) as Polyquaternium 24. These materials are available from Dow/Amerchol Corp. under the tradename Polymer LM-200. Other suitable types of cationic cellulose include the polymeric quaternary ammonium salts of hydroxyethyl cellulose reacted with lauryl dimethyl ammonium-substituted epoxide and trimethyl ammonium substituted epoxide referred to in the industry (CTFA) as Polyquaternium 67. These materials are available from Dow/Amerchol Corp. under the tradename SoftCAT Polymer SL-5, SoftCAT Polymer SL-30, Polymer SL-60, Polymer SL-100, Polymer SK-L, Polymer SK-M, Polymer SK-MH, and Polymer SK-H.
D. Mechanical Foam Dispenser
The hair care composition can be delivered in a liquid or foam form. It may be delivered in a foam form via a mechanical foam dispenser. The mechanical foam dispenser described herein may be selected from the group consisting of squeeze foam dispensers, pump foam dispensers, other mechanical foam dispensers, and combinations thereof. In an embodiment, the mechanical foam dispenser is a squeeze foam dispenser. Non-limiting examples of suitable pump dispensers include those described in WO 2004/078903, WO 2004/078901, and WO 2005/078063 and may be supplied by Albea (60 Electric Ave., Thomaston, Conn. 06787 USA) or Rieke Packaging Systems (500 West Seventh St., Auburn, Ind. 46706).
The mechanical foam dispenser may comprise a reservoir for holding the hair care composition. The reservoir may be made out of any suitable material selected from the group consisting of plastic, metal, alloy, laminate, and combinations thereof. The reservoir may be a refillable reservoir such as a pour-in or screw-on reservoir, or the reservoir may be for one-time use. The reservoir may also be removable from the mechanical foam dispenser. Alternatively, the reservoir may be integrated with the mechanical foam dispenser. In an embodiment, there may be two or more reservoirs.
The reservoir may be comprised of a material selected from the group consisting of rigid materials, flexible materials, and combinations thereof. The reservoir may be comprised of a rigid material if it does not collapse under external atmospheric pressure when it is subject to an interior partial vacuum.
E. Aerosol Foam Dispenser
The hair care composition can be delivered in a liquid or foam form. It may be delivered in a foam form via an aerosol foam dispenser. The aerosol foam dispenser may comprise a reservoir for holding the hair care composition. The reservoir may be made out of any suitable material selected from the group consisting of plastic, metal, alloy, laminate, and combinations thereof. In an embodiment, the reservoir may be for one-time use. In an embodiment, the reservoir may be removable from the aerosol foam dispenser. Alternatively, the reservoir may be integrated with the aerosol foam dispenser. In an embodiment, there may be two or more reservoirs.
The reservoir may be comprised of a material selected from the group consisting of rigid materials, flexible materials, and combinations thereof. The reservoir may be comprised of a rigid material if it does not collapse under external atmospheric pressure when it is subject to an interior partial vacuum.
F. Propellant
The hair care composition described herein may comprise from about from about 1% to about 10% propellant, alternatively from about 2% to about 9% propellant, and alternatively from about 3% to about 8% propellant, by weight of the hair care composition.
The propellant may comprise one or more volatile materials, which in a gaseous state, may carry the other components of the hair care composition in particulate or droplet form. The propellant may have a boiling point within the range of from about −45° C. to about 5° C. The propellant may be liquefied when packaged in convention aerosol containers under pressure. The rapid boiling of the propellant upon leaving the aerosol foam dispenser may aid in the atomization of the other components of the hair care composition.
Aerosol propellant which may be employed in the hair care composition may include the chemically-inert hydrocarbons such as propane, n-butane, isobutane, cyclopropane, and mixtures thereof, as well as halogenated hydrocarbons such as dichlorodifluoromethane, 1,1-dichloro-1,1,2,2-tetrafluoroethane, 1-chloro-1,1-difluoro-2,2-trifluoroethane, 1-chloro-1,1-difluoroethylene, 1,1-difluoroethane, dimethyl ether, monochlorodifluoromethane, trans-1,3,3,3-tetrafluoropropene, and mixtures thereof. The propellant may comprise hydrocarbons such as isobutane, propane, and butane, and these materials may be used for their low ozone reactivity and may be used as individual components where their vapor pressures at 21.1° C. range from about 1.17 Bar to about 7.45 Bar, alternatively from about 1.17 Bar to about 4.83 Bar, and alternatively from about 2.14 Bar to about 3.79 Bar. The propellant may be hydrofluoroolefins (HFOs).
The aerosol foam dispenser may be of the bag on valve type wherein the container comprises an inner bag and an outer container, which encloses the inner bag, while the inner bag has a valve mechanism attached which is movable between an open position and a closed position. The outer container may be formed from metal or plastic or the like, and any of the propellants described herein can be filled in a space between the outer container and the inner bag. The inner bag may be flexible, and can be made from a single material or from a composite material including plastic, which may comprise at least a polymeric layer and a layer which acts as a gas barrier, e.g., made from metal, such as Aluminum. The inner material of the bag may be inert to the contents of the composition, and the inner material may also be impenetrable by the contents of the composition in the bag. The inner bag may comprise a layer of a material which is essentially impermeable to the propellant inside of the bag. The inner bag may comprise a layer of a material which is essentially impermeable to the propellant outside of the bag which generally is not intended to be mixed with the composition in the inner bag during storage. In an embodiment where the propellant is inside the bag, it may be known as a foaming agent.
G. Additional Components
The shampoo compositions of the present invention may optionally comprise one or more additional components known for use in hair care or personal care products, provided that the additional components are physically and chemically compatible with the essential components described herein, or do not otherwise unduly impair product stability, aesthetics or performance. Such additional components are most typically those described in reference books such as the CTFA Cosmetic Ingredient Handbook, Second Edition, The Cosmetic, Toiletries, and Fragrance Association, Inc. 1988, 1992. Individual concentrations of such additional components may range from about 0.001 wt % to about 10 wt % by weight of the hair care compositions.
Non-limiting examples of additional components for use in the hair care compositions include conditioning agents, anti-dandruff agents, particles, suspending agents, paraffinic hydrocarbons, propellants, viscosity modifiers, dyes, non-volatile solvents or diluents (water-soluble and water-insoluble), pearlescent aids, foam boosters, additional surfactants or nonionic cosurfactants, pediculocides, pH adjusting agents, perfumes, preservatives, proteins, skin active agents, sunscreens, UV absorbers, and vitamins.
1. Conditioning Agent
The hair care compositions may comprise one or more conditioning agents. Conditioning agents include materials that are used to give a particular conditioning benefit to hair. The conditioning agents useful in the hair care compositions of the present invention typically comprise a water-insoluble, water-dispersible, non-volatile, liquid that forms emulsified, liquid particles. Suitable conditioning agents for use in the hair care composition are those conditioning agents characterized generally as silicones, organic conditioning oils or combinations thereof, or those conditioning agents which otherwise form liquid, dispersed particles in the aqueous surfactant matrix. The conditioning agent may contain one or more quaternary ammonium salt in its molecular structure. The conditioning agent may be a dimethiconol micro-emulsion.
One or more conditioning agents are present from about 0.01 wt % to about 10 wt %, from about 0.1 wt % to about 8 wt %, and from about 0.2 wt % to about 4 wt %, from about 0.5 to about 1.5% by weight of the composition.
The compositions of the present invention may contain one or more silicone conditioning agents. Examples of the silicones include dimethicones, dimethiconols, cyclic silicones, methylphenyl polysiloxane, and modified silicones with various functional groups such as amino groups, quaternary ammonium salt groups, aliphatic groups, alcohol groups, carboxylic acid groups, ether groups, epoxy groups, sugar or polysaccharide groups, fluorine-modified alkyl groups, alkoxy groups, or combinations of such groups. Such silicones may be soluble or insoluble in the aqueous (or non-aqueous) product carrier. In the case of insoluble liquid silicones, the polymer can be in an emulsified form with droplet size of about 10 nm to about 30 micrometers
Suitable silicone conditioning agents include durable silicone materials such as cross-linkable silicone compounds containing different functional groups including siloxanes or silsequioxanes with terminal hydroxyl or alkoxy function groups. Non-limiting examples include Wacker Belsil ADM 8301E and Belsil ADM 6300E. Other suitable durable conditioning compounds include cross-linkable silicones such as MQ-resin, amino fluids and mixture thereof. Non-limiting examples include Wacker ADM 8500E, Dow Corning DX AP6087, Momentive Silform flexible resins, SR1000 MQ-resin and mxture thereof. Such compounds can cross-link upon drying on hair surface or after exposing to heat treatment to impart durable conditioning over multiple washing cycles.
The conditioning agent of the compositions of the present invention may also comprise at least one organic conditioning material such as oil or wax, either alone or in combination with other conditioning agents, such as the silicones described above. The organic material can be nonpolymeric, oligomeric or polymeric. It may be in the form of oil or wax and may be added in the formulation neat or in a pre-emulsified form. Some non-limiting examples of organic conditioning materials include, but are not limited to: i) hydrocarbon oils; ii) polyolefins, iii) fatty esters, iv) fluorinated conditioning compounds, v) fatty alcohols, vi) alkyl glucosides and alkyl glucoside derivatives; vii) quaternary ammonium compounds; viii) polyethylene glycols and polypropylene glycols having a molecular weight of up to about 2,000,000 including those with CTFA names PEG-20 200, PEG-400, PEG-600, PEG-1000, PEG-2M, PEG-7M, PEG-14M, PEG-45M and mixtures thereof.
2. Rheology Modifier
In one embodiment the hair care product may include one or more rheology modifiers to adjust the rheological characteristics of the composition for better feel, in-use properties and the suspending stability of the composition. For example, the rheological properties are adjusted so that the composition remains uniform during its storage and transportation and it does not drip undesirably onto other areas of the body, clothing or home furnishings during its use. Any suitable rheology modifier can be used. In an embodiment, the leave-on treatment may comprise from about 0.01% to about 3% of a rheology modifier, alternatively from about 0.1% to about 1% of a rheology modifier,
3. Benefit Agents
In an embodiment, the hair care composition further comprises one or more additional benefit agents. The benefit agents comprise a material selected from the group consisting of anti-fungal agents, anti-itch agents, anti-bacterial agents, anti-microbial agents, moisturization agents, anti-oxidants, chelants, vitamins, lipid soluble vitamins, perfumes, brighteners, enzymes, sensates, attractants, dyes, pigments, bleaches, and mixtures thereof.
According to an embodiment, the shampoo composition comprises an anti-dandruff active, which may be an anti-dandruff active particulate. The anti-dandruff active can be selected from the group consisting of: pyridinethione salts; azoles, such as an imidazole such as ketoconazole, econazole, climbazole and elubiol; selenium sulphide; coal tar, particulate sulfur; keratolytic agents such as salicylic acid; and mixtures thereof. In an embodiment, the anti-dandruff particulate is a pyridinethione salt.
A. Cone/Plate Viscosity Method:
The viscosities of the examples are measured by a Cone/Plate Controlled Stress Brookfield Rheometer R/S Plus, by Brookfield Engineering Laboratories, Stoughton, Mass. The cone used (Spindle C-75-1) has a diameter of 75 mm and 1° angle. The viscosity is determined using a steady state flow experiment at constant shear rate of 2 s−1 and at temperature of 26.5° C. The sample size is 2.5 ml and the total measurement reading time is 3 minutes. The instrument cannot accurately report the viscosity of a liquid that is below 100 cps. The viscosity is reported as less than 100 cps.
B. Lather Rheology Method
Lather is generated in a vessel by adding 1) 180 ml of water (having a hardness of 7 grain per gallon) and 2) 20 ml of shampoo. A blade is placed in the center of the vessel. The mixture is blended at a speed of 1200 rpm for 1 minute.
Lather rheology is characterized using an AR2000 Rheometer from TA Instruments. A 60mm acrylate plastic top rotating plate is attached to the rheometer for later rheology measurement. A small amount of lather is applied on the bottom of the plate of the AR 2000 Rheometer using a spatulas. The top plastic plate is lowered with a gap of 1000 microns in between the two plates. The excess lather around the plates is removed. Oscillation stress sweeps are run to generate the elastic modulus or storage modulus (G′), the viscous modulus or loss modulus (G″) and Tan Delta (the ratio of G″/G′) of the later. The oscillation frequency is set at 1 Hz, oscillation stress is varied from 0.1 Pa to 25 Pa, and the testing temperature is 25° C. Elastic modulus (G′) of the lather is the average G′ value at oscillation stress range from 0.1 Pa to 0.2 pa.
C. Hair Wet Feel Friction Method:
A switch of 4 grams general population hair at 8 inches length is used for the measurement. Water temperature is set at 100° F., (hardness is 7 grain per gallon), and flow rate is 1.6 liter per minute. Amount of 0.4 ml of a liquid shampoo is applied on the hair switch in a zigzag pattern uniformly to cover the entire hair length, using a syringe. The hair switch is then Pt lathered for 30 seconds, rinse with water for 30 seconds, and 2nd lathered for 30 seconds. Water flow rate is then reduced to 0.2 liter per minute. The hair switch is sandwiched with a clamp under 1200 gram of force and pulled through the entire length while the water is running at the low flow rate. The pull time is 30 second. Friction is measured with a friction analyzer (such as Instron or MTS tensile measurement) with a load cell of 5 kg. Repeat the pull under rinse for total of 21 times. Total 21 Friction values are collected. Hair Wet Feel Friction (Fwet) of shampoo is the final rinse friction which is the average friction of the last 7 friction measurements.
D. Hair Clean Rinse Feel Method
A switch of 4 grams general population hair at 8 inches length is used for the measurement. Water temperature is set at 100° F., hardness is 7 grain per gallon, and flow rate is 1.6 liter per minute. Amount of 0.4 ml of a liquid shampoo is applied on the hair switch in a zigzag pattern uniformly to cover the entire hair length, using a syringe. The hair switch is then 1st lathered for 30 seconds, rinse with water for 30 seconds, and 2nd lathered for 30 seconds. Water flow rate is then reduced to 0.2 liter per minute. The hair switch is sandwiched with a clamp under 1200 gram of force and pulled through the entire length while the water is running at the low flow rate. The pull time is 30 second. Friction is measured with a Friction analyzer with a load cell of 5 kg. Repeat the pull under rinse for total of 21 times. Total 21 Friction values are collected. Hair Wet Feel Friction (Fwet) of shampoo is the final rinse friction which is the average friction of the last 7 friction measurements. Then, the water is shut off.
The hair switch is still sandwiched with the clamp under 1200 gram of force and pulled through the entire length. The pull time is 30 second. Friction is measured with the Friction analyzer with the load cell of 5 kg. Repeat the pull for total of 10 times. Hair Rinse Feel Friction (Frinse) of shampoo is the final rinse friction which is the average friction of the last 5 friction measurements. Hair Clean Rinse Feel (Fclean) is the magnitude of friction reduction from Hair Wet Feel Friction (Fwet) to Hair Rinse Feel Friction (Frinse).
F
clean
=F
wet
−F
rinse
E. Hair Switch Soil Removal Method
A switch of 4 grams general population hair at 8 inches length is used for the measurement. It's weighted and recorded as W0. Amount of 2 ml of coconut oil (Crodamol GTCC-LQ-(MV), supplied from Croda) is applied on the hair switch in a zigzag pattern uniformly to cover the entire hair length, using a syringe. The hair switch is then rubbed for 30 second to soak all of the oil into the hair switch. The soiled hair switch is weighted and recorded as W 1. The Soil applied on the hair switch is calculated as W1−W0 and recorded as Wsoil applied. Water is then turned on. The temperature is set at 100 oF, hardness is 7 grain per gallon, and flow rate is 1.6 liter per minute. The soiled hair switch is wetted with water for 1 second. Amount of 0.4 ml of a liquid shampoo is applied on the hair switch in a zigzag pattern uniformly to cover the entire hair length, using a syringe. The hair switch is lathered for 1 minute, rinsed with water for 1 minute, and squeezed to let the excess water out. The hair switch is hung on a rack and dried overnight. The cleaned and air dried hair switch is weighted and recorded as W2. The weight of oil residue left on the hair switch is calculated W2−W0 and recorded as Wsoil residue.
The Weight Percent Soil Residue left on the hair switch is calculated as
% Soil Residue left on hair switch=Wsoil residue/Wsoil applied×100
The Weight Percent of Soil Removed from hair switch is calculated as:
% Soil Removed from hair switch=(Wsoil applied−Wsoil residue)/Wsoil applied×100
F. Hair Switch Expansion Method
A switch of 4 grams general population hair at 8 inches length is used for the measurement. It's weighted and recorded as W0. Amount of 2 ml of coconut oil (Crodamol GTCC-LQ-(MV), supplied from Croda) is applied on the hair switch in a zigzag pattern uniformly to cover the entire hair length, using a syringe. The hair switch is then rubbed for 30 second to soak all of the oil into the hair switch. The soiled hair switch is then hung in front of a lighted white board with back lights from behind. Pictures are then taken. The images are analyzed using Image Pro 7 Analyzer. Bulk area of the soiled hair switch is reported as Asoiled in number of pixels. Water is then turned on. The temperature is set at 100° F., hardness is 7 grain per gallon, and flow rate is 1.6 liter per minute. The soiled hair switch is wetted with water for 1 second. Amount of 0.4 ml of a liquid shampoo is applied on the hair switch in a zigzag pattern uniformly to cover the entire hair length, using a syringe. The hair switch is lathered for 1 minute, rinsed with water for 1 minute, and squeezed to let the excess water out. The hair switch is hung on a rack and dried overnight. The cleaned and air dried hair switch is hung in front of the lighted white board with back lights from behind. Pictures are then taken. The images are analyzed using Image Pro 7 Analyzer. Bulk area of the soiled hair switch is reported as Acleaned in number of pixels.
The Area expansion of hair switch is calculated as:
Area Expansion of Hair Switch=Acleaned−Asoiled
The Percent expansion of hair switch is calculated as:
% Expansion of Hair Switch=(Acleaned−Asoiled)/Dsoiled×100
G. Hair Flexibility Method
A switch of 4 grams general population hair at 8 inches length is used for the measurement. Water temperature is set at 100° F., hardness is 7 grain per gallon, and flow rate is 1.6 liter per minute. An amount of 0.4 ml of a shampoo is applied on the hair switch in a zigzag pattern uniformly to cover the entire hair length using a syringe. The hair switch is lathered for 1 minute, rinsed with water for 1 minute, and squeezed to let the excess water out. The hair switch is hung on a rack and dried overnight. Three replicates of hair switches are washed and dried for each shampoo.
Hair Flexibility of the dried hair switches is assessed by six panelists. Panelists are asked to grade the hair switches on a 0 to 10 scale (0=low, 10=high). Panelists' responses are then averaged to assign a hair flexibility score for the shampoo example.
The following examples illustrate embodiments of the invention described herein. The exemplified hair care compositions may be made by conventional formulation and mixing techniques or by mixing together one or more polyols (e.g. glycerin, propylene glycol etc.), water and surfactants along with any solids that need to be melted at an elevated temperature, e.g. about 75° C. The ingredients are mixed thoroughly at the elevated temperature and then cooled to ambient temperature. Additional ingredients, including electrolytes, polymers, silicone emulsions, preservatives and fragrances may be added to the cooled product. It will be appreciated that other modifications of the hair care compositions, and/or conditioner compositions within the skill of those in the formulation art can be undertaken without departing from the spirit and scope of this invention. All parts, percentages, and ratios herein are by weight unless otherwise specified. Some components may come from suppliers as dilute solutions. The amount stated reflects the weight percent of the active material, unless otherwise specified.
The following are non-limiting examples of Hair Care compositions described herein.
The hair care composition can be delivered in a liquid or foam form. It may be delivered in a foam form via a mechanical foam dispenser when the hair care composition has a viscosity less than about 500 cps. It may be further delivered in a foam form via an aerosol foam dispenser with about 1 to 10 weight percent of a propellant when the hair care composition has a viscosity less than about 3000 cps. The viscosity values are measured before adding in the propellants.
Every document cited herein, including any cross referenced or related patent or application and any patent application or patent to which this application claims priority or benefit thereof, is hereby incorporated herein by reference in its entirety unless expressly excluded or otherwise limited. The citation of any document is not an admission that it is prior art with respect to any invention disclosed or claimed herein or that it alone, or in any combination with any other reference or references, teaches, suggests or discloses any such invention. Further, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall govern.
While particular embodiments of the present invention have been illustrated and described, it would be obvious to those skilled in the art that various other changes and modifications can be made without departing from the spirit and scope of the invention. It is therefore intended to cover in the appended claims all such changes and modifications that are within the scope of this invention.
| Number | Date | Country | |
|---|---|---|---|
| 62267492 | Dec 2015 | US | |
| 62411051 | Oct 2016 | US |
