CN112826760A - Hair care composition - Google Patents
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- CN112826760A CN112826760A CN202110075003.1A CN202110075003A CN112826760A CN 112826760 A CN112826760 A CN 112826760A CN 202110075003 A CN202110075003 A CN 202110075003A CN 112826760 A CN112826760 A CN 112826760A
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Abstract
A hair care composition is disclosed comprising discretely dispersed droplets of a cationic deposition polymer and a water insoluble conditioning agent, wherein the cationic deposition polymer comprises at least 90 wt% cationically modified guar by weight of the cationic deposition polymer, and wherein the cationically modified guar comprises a first cationically modified guar polymer having a charge density greater than 1.2meq/g and a molecular weight of at least 1 million g/mol, and a second cationically modified guar polymer having a charge density of from 0.8 to 1.2meq/g and a molecular weight of at least 1 million g/mol.
Description
The present application is a divisional application of a patent application having an application date of 2014, 10/1, application number of 201480056443.0 and an invention name of "hair care composition".
Technical Field
The present invention relates to hair care compositions comprising a conditioning agent and a cationic deposition polymer. In particular, the present invention relates to hair care compositions comprising a combination of cationic deposition polymers. Furthermore, the present invention relates to the use of such hair care compositions to provide cleansing and conditioning benefits to the hair.
Background
Hair care compositions that provide a combination of cleansing and conditioning benefits to the hair are known in the art. Such compositions typically comprise one or more anionic cleansing surfactants in combination with one or more conditioning agents. Generally, the most common conditioning agents used in hair care compositions are water-insoluble oily materials (such as mineral oils), naturally occurring oils (such as triglycerides and silicone polymers). Conditioning benefits are obtained by depositing oily materials on the hair resulting in a film forming which makes the hair easier to comb when wet and easier to manage when dry.
Cationic polymers are often used to enhance deposition of conditioning agents onto the hair. These polymers may be synthetic or natural polymers that have been modified with cationic substituents.
A problem associated with the use of cationic deposition polymers is the difficulty in achieving the desired hair feel and hair appearance while retaining high conditioning benefits. For example, some cationic polymers are effective in improving the hair sensory attributes during the wet phase during the wash and rinse phases, but provide undesirable hair feel after drying, such as heavy, greasy, coated feel (coated feel) or significantly reduced hair volume as experienced by many consumers when high charge density cationic polymers and oily conditioning agents are combined in hair care compositions.
The present inventors have now recognized the need to develop hair care compositions that can provide high conditioning benefits while maintaining a pleasant hair feel after drying. It has been found that this need can be met by using a combination of two cationic polymers having a specific molecular weight and cationic charge density in a hair care composition which also comprises small droplets of a water-insoluble oily conditioning agent. Furthermore, the hair care composition of the present invention demonstrates an unaffected deposition efficiency of the anti-dandruff active on the scalp, which indicates that it can also be used for anti-dandruff purposes.
Definition of
Degree of substitution
As used herein, "degree of substitution" refers to the average number of moles of cationic groups per mole of saccharide unit. Degree of Substitution (DS) in deuterium oxide (D)2O) in a solvent mixed with deuterium chloride (DCl)1H NMR. For example, DS use of guar hydroxypropyltrimonium chloride (guar hydroxypropyltrimonium chloride)1H NMR and the spectra recorded at 25 ℃. The integration of the peaks corresponding to 9 methyl protons of quaternary ammonium groups on the guar units, which occur between 3.1 and 3.3ppm, is a 1. CH corresponding to terminal protons on the sugar ring (anomeric proton) and cationic substituents occurring between 3.3 and 4.5ppm2And multiplets of protons on CH groups are also integrated asA2. Thus, the DS for the case of the cationizing agent 2, 3-epoxypropyltrimethylammonium chloride can be calculated as follows:
density of cationic charge
As used herein, "cationic charge density" refers to the number of cationic charges per weight unit of a given polymer. The cationic charge density can be calculated from the degree of substitution as described in WO2013/011122, the disclosure of which is incorporated herein by reference in its entirety, especially page 8, lines 8-17. For example, for a cationically modified guar polymer obtained by reaction with 2, 3-epoxypropyltrimethylammonium chloride, the cationic charge density can be calculated from DS using the following formula:
high charge density cationic polymers
As used herein, "high charge density cationic polymer" refers to a cationic polymer having a cationic charge density greater than 1.2 meq/gram.
Water insolubility
As used herein, "water-insoluble" refers to a material having a solubility in water of 0.1 wt% or less at 25 ℃ and atmospheric pressure.
Molecular weight
As used herein, "molecular weight" refers to the weight average molecular weight of a given polymer, preferably as measured by SEC-MALS (size exclusion chromatography by multi-angle light scattering detection) as described in WO2013/011122, the disclosure of which is incorporated herein by reference in its entirety, especially page 3, lines 11-18.
Others
Except in the examples, or where otherwise explicitly indicated, all numbers in this description indicating amounts of material or conditions of reaction, physical properties of materials and/or use may optionally be understood as modified by the word "about".
All amounts are by weight of the final hair care composition, unless otherwise specified.
It should be noted that where any range of values is specifically noted, any particular upper value can be associated with any particular lower value.
For the avoidance of doubt, the word "comprising" is intended to mean "including", but not necessarily meaning "consisting of … …" or "consisting of … …". In other words, the listed steps or options need not be exhaustive.
The disclosure of the invention as found herein is considered to cover all embodiments as found in the various claims as dependent upon one another, whether the claims may not have multiple dependencies or redundancies.
Where a feature is disclosed in relation to a particular aspect of the invention (e.g. a composition of the invention), such disclosure is also to be considered as applying mutatis mutandis to any other aspect of the invention (e.g. a method of the invention).
Disclosure of Invention
In a first aspect, the present invention relates to a hair care composition comprising:
a) a cationic deposition polymer; and
b) discrete dispersed droplets of a water insoluble conditioning agent;
wherein the cationic deposition polymer comprises at least 90 wt% cationically modified guar by weight of the cationic deposition polymer, and wherein the cationically modified guar comprises:
(i) a first cationically modified guar polymer having a charge density greater than 1.2meq/g and a molecular weight of at least 1 million g/mol; and
(ii) a second cationically modified guar polymer having a charge density of 0.8 to 1.2meq/g and a molecular weight of at least 1 million g/mol.
In a second aspect, the present invention relates to a packaged hair care product comprising the hair care composition of the first aspect of the invention.
In a third aspect, the present invention is directed to a method for making any of the embodiments of the first embodiment hair care composition, comprising the steps of:
i) selecting a first cationically modified guar polymer having a charge density greater than 1.2meq/g and a molecular weight of at least 1 million g/mol;
ii) selecting a second cationically modified guar polymer having a charge density of from 0.8 to 1.2meq/g and a molecular weight of at least 1 million g/mol;
iii) combining the first and second cationically modified guar polymers with discrete droplets of a water insoluble conditioning agent.
In a fourth aspect, the present invention relates to a hair care composition obtainable and/or obtained by the process of the third aspect.
In a fifth aspect, the present invention relates to a method of using the hair care composition of the first aspect of the invention to provide high conditioning benefits while maintaining a pleasant hair feel after drying.
All other aspects of the invention will become more readily apparent in view of the detailed description and examples that follow.
Detailed Description
It has now been found that hair care compositions comprising a combination of two cationic polymers having a specific molecular weight and cationic charge density and small droplets of a water-insoluble oily conditioning agent can provide high conditioning benefits to the hair while still maintaining a pleasant hair feel after drying. Furthermore, the hair care compositions of the present invention may also be used for anti-dandruff purposes.
Cationic deposition polymers
Cationic polymers suitable for use in the compositions of the present invention comprise cationically modified guar polymers such as guar hydroxypropyltrimonium chloride, which is, for example, the JAGUAR brand series commercially available from Rhodia.
Typically for cationic polysaccharide polymers, unmodified monomersThe hydroxyl group of the somatic sugar ring unit is the site of cationic substitution. Since most polysaccharides have an average of three hydroxyl groups available for substitution on the monomeric saccharide unit, the Degree of Substitution (DS) is typically in the range of 0 to 3. In addition to DS, the cationic charge on the polymer can also be quantified as cationic charge density. DS has previously been determined by different methods. For example, the cationic charge density of the polymer is in some cases calculated based on the percent nitrogen content determined by the Kjeldahl method as described in the united states pharmacopeia under the chemical test for nitrogen determination and is expressed in milliequivalents (meq)/gram. However, the cationic charge density of the polymer in the present invention is calculated from the degree of substitution by deuterium oxide (D)2O) in a solvent mixed with deuterium chloride (DCl)1H NMR.
In many cases, from1The DS obtained from H NMR measurements may not be suitable for comparison with that obtained from the Kjeldahl method, since the two methods are affected by different factors.
The cationic deposition polymer according to the present invention comprises a combination of two cationic polymers. The two cationic polymers are cationically modified guar polymers in an amount of at least 90 wt%, more preferably at least 95 wt%, even more preferably at least 98 wt% of the cationic deposition polymer, and most preferably the cationic deposition polymer consists of (or at least consists essentially of) the cationically modified guar polymer.
The first cationically modified guar polymer suitably has a charge density of at least 1.2 meq/gram, preferably from 1.3 to 1.8 meq/gram. Suitably, the first cationically modified guar polymer has an average molecular weight of at least 1 million grams per mole, preferably from 1.1 to 3 million grams per mole. An example of such a polymer is described in table 1 of WO2013/011122 as polymer 2. The second cationically modified guar polymer suitably has a charge density of from 0.8 to 1.2 meq/gram, preferably from 0.9 to 1.1 meq/gram. Suitably, the second cationically modified guar polymer has an average molecular weight of at least 1 million grams per mole, preferably from 1.5 to 3 million grams per mole. A specific example of such a polymer is JAGUAR C17.
Typically, the hair care compositions of the present invention comprise the first cationically modified guar polymer in an amount of from 0.001 to 1 weight%, preferably from 0.005 to 0.8 weight%, more preferably from 0.01 to 0.5 weight%, most preferably from 0.03 to 0.3 weight% of the hair care composition, based on the total weight of the hair care composition, and including all ranges subsumed therein.
Typically, the hair care compositions of the present invention comprise the second cationically modified guar polymer in an amount of from 0.001 to 1%, preferably from 0.005 to 0.8%, more preferably from 0.01 to 0.5%, most preferably from 0.03 to 0.3% by weight of the hair care composition based on the total weight of the hair care composition and including all ranges subsumed therein.
Generally, the hair care compositions of the present invention comprise a total amount of the first and second cationically-modified guar polymers in an amount of from 0.002 to 2 weight%, preferably from 0.01 to 1.6 weight%, more preferably from 0.02 to 1 weight%, most preferably from 0.06 to 0.6 weight% of the hair care composition, based on the total weight of the hair care composition, and including all ranges subsumed therein.
The relative weight ratio of the first cationically-modified guar polymer to the second cationically-modified guar polymer in the hair care composition of the invention can be in the range of from 1:15 to 15:1, preferably from 1:10 to 10:1, most preferably from 1:5 to 5: 1.
In addition to the first and second cationic guar gums, the deposition polymer may contain minor amounts of additional cationic polymers. The additional cationic polymer may be a homopolymer or be formed from two or more types of monomers. The molecular weight of the polymer will generally be between 5,000 and 10,000,000 g/mole, usually at least 10,000 and preferably from 100,000 to 2,000,000. The polymer will have cationic nitrogen containing groups such as quaternary ammonium or protonated amino groups, or mixtures thereof.
The cationic nitrogen-containing group will generally be present as a substituent on a portion of the total monomer units of the cationic polymer. The ratio of cationic monomer units to non-cationic monomer units is selected to provide a polymer having a cationic charge density in the desired range.
Suitable additional cationic polymers include, for example, copolymers of vinyl monomers having cationic amine or quaternary ammonium functionality with water-soluble spacer monomers such as (meth) acrylamide, alkyl and dialkyl (meth) acrylamides, alkyl (meth) acrylates, vinyl caprolactone and vinyl pyrrolidine. The alkyl and dialkyl substituted monomers preferably have C1-C7 alkyl groups, more preferably C1-C3 alkyl groups. Other suitable spacers include vinyl esters, vinyl alcohol, maleic anhydride, propylene glycol, and ethylene glycol. Preferably, the additional cationic polymer is a cationic polysaccharide polymer, such as cationic cellulose derivatives, cationic starch derivatives and mixtures thereof.
Conditioning agent
The hair care compositions of the present invention comprise water insoluble conditioning agents to enhance conditioning performance. Preferably, the conditioning agent is non-volatile, meaning that it has a vapor pressure of less than 1000Pa at 25 ℃.
Preferably, the hair care composition comprises discrete dispersed droplets of water insoluble conditioning agent having a mean droplet diameter (D) of less than 15 microns, preferably less than 10 microns, more preferably less than 5 microns, most preferably less than 3 microns3,2). Average droplet diameter (D) of water-insoluble Conditioning agent3,2) Measurements may be made by laser light scattering techniques, for example using a 2600D particle sizer from Malvern Instruments.
The water insoluble conditioning agent may comprise non-silicone conditioning agents comprising non-silicone oily or fatty materials such as hydrocarbon oils, fatty esters and mixtures thereof. Preferably, the water insoluble conditioning agent is an emulsified silicone oil.
Suitable silicones include polydiorganosiloxanes, in particular polydimethylsiloxanes, which have the CTFA designation dimethicone (dimethicone). Also suitable for use in the compositions of the invention, particularly shampoos and conditioners, are polydimethylsiloxanes having hydroxyl end groups, which have the CTFA designation dimethiconol (dimethiconol). Also suitable for use in the compositions of the present invention are lightly crosslinked silicone rubbers, as described, for example, in WO 96/31188. Preferably, the silicone oil comprises polydimethylsiloxane, dimethiconol, or a mixture thereof.
The viscosity of the emulsified silicone itself (rather than the emulsion or final hair care composition) is typically at least 10,000cSt (centistokes ═ mm) at 25 ℃2·S-1) Preferably at least 60,000cSt, most preferably at least 500,000cSt, ideally at least 1,000,000 cSt. Preferably, the viscosity does not exceed 109cSt to facilitate formulation. Suitable methods for measuring the kinematic viscosity of silicone oils are known to those skilled in the art, such as capillary viscometers. For high viscosity silicones, a constant stress rheometer can be used to measure viscosity.
Suitable emulsified silicones for use in the hair care compositions of the present invention are available as pre-formed silicone emulsions from silicone suppliers such as Dow Corning and GE silicones. The use of such preformed silicone emulsions is preferred for ease of processing and control of silicone particle size. Such pre-formed silicone emulsions will typically additionally comprise a suitable emulsifier and may be prepared by chemical emulsification methods such as emulsion polymerization, or by mechanical emulsification using a high shear mixer.
Examples of suitable preformed silicone emulsions include DC1785, DC1788, DC7128, all available from Dow Corning. These are dimethiconol/dimethicone emulsions.
Another class of silicones that can be used are functionalized silicones, such as amino-functional silicones, meaning silicones containing at least one primary, secondary or tertiary amine group, or a quaternary ammonium group. Examples of suitable amino-functional siloxanes include polysiloxanes having the CTFA designation "aminoterminal polydimethylsiloxane (amomidethicone)".
Preferably, the silicone emulsion droplets are blended with certain types of high molecular weight surface active block polymers to form a silicone emulsion, as described for example in WO 03/094874. One preferred form of surface active block polymer having polyoxypropylene and polyoxyethylene groups as the hydrophobic and hydrophilic moieties respectively has formula I and has the CTFA designation poloxamer (poloxamer), commercially known under the trade name "Pluronic" from BASF.
I) HO(CH2CH2O)x(CH(CH3)CH2O)y(CH2CH2O)xH
Suitably, the average value of x in formula I is 4 or greater, preferably 8 or greater, more preferably 25 or greater, yet more preferably 50 or greater, and most preferably 80 or greater. The average value of x will generally not exceed 200. Suitably, the average value of y is 25 or greater, preferably 35 or greater, more preferably 45 or greater and most preferably 60 or greater. The average value of y does not generally exceed 100.
Another preferred form of the surface active block polymer is according to formula II and has the CTFA designation Poloxamine (Poloxamine). Those are commercially available from BASF under the trade designation "terfenac".
II) (HO(CH2CH2O)a(CH(CH3)CH2O)b)2-N-CH2-CH2-N-((OCH2CH(CH3))b(OCH2CH2)aOH)2
Suitably, the average value of a is 2 or greater, preferably 4 or greater, more preferably 8 or greater, even more preferably 25 or greater, and most preferably 40 or greater. The average value of a does not generally exceed 200. Suitably, the average value of b is 6 or greater, preferably 9 or greater, more preferably 11 or greater, and most preferably 15 or greater. The average value of b is usually not more than 50.
Preferably, the surface active block polymer is a poloxamer and/or a poloxamine, more preferably, the surface active block polymer is a poloxamer.
Preferably, the surface active block polymer is blended with polydimethylsiloxane. The weight ratio of polydimethylsiloxane to surface active block polymer in the blend is preferably in the range of from 2:1 to 200:1, more preferably from 5:1 to 50:1, even more preferably from 10:1 to 40:1, most preferably from 15:1 to 30: 1.
The water insoluble conditioning agent is generally present in the hair care compositions of the present invention in an amount of from 0.05 to 15%, preferably from 0.1 to 10%, more preferably from 0.5 to 8%, most preferably from 1 to 5%, based on the total weight of the hair care composition, and includes all ranges subsumed therein.
Cleansing surfactant
In a preferred embodiment, the hair care composition according to the invention comprises one or more cleansing surfactants. Preferably, the cleansing surfactant is an anionic surfactant.
Examples of suitable anionic cleansing surfactants are alkyl sulphates, alkyl ether sulphates, alkaryl sulphonates, alkanoyl isethionates, alkyl succinates, alkyl sulphosuccinates, alkyl ether sulphosuccinates, N-alkyl sarcosinates, alkyl phosphates, alkyl ether phosphates and alkyl ether carboxylic acids and salts thereof, especially their sodium, magnesium, ammonium and mono-, di-and triethanolamine salts. The alkyl and acyl groups generally contain from 8 to 18, preferably from 10 to 16, carbon atoms and may be unsaturated. The alkyl ether sulfates, alkyl ether sulfosuccinates, alkyl ether phosphates and alkyl ether carboxylic acids and salts thereof may contain from 1 to 20 ethylene oxide or propylene oxide units per molecule.
Typical anionic cleansing surfactants for use in the hair care compositions of the present invention include sodium oleyl succinate, ammonium lauryl sulphosuccinate, sodium lauryl sulphate, sodium lauryl ether sulphosuccinate, ammonium lauryl sulphate, ammonium lauryl ether sulphate, sodium dodecylbenzene sulphonate, triethanolamine dodecylbenzene sulphonate, sodium cocoyl isethionate, sodium lauryl isethionate, lauryl ether carboxylic acid and sodium N-lauryl sarcosinate.
Preferred anionic surfactants are alkyl sulfates and alkyl ether sulfates. These substances have the corresponding formula R2OSO3M and R1O(C2H4O)xSO3M, wherein R2Is an alkyl or alkenyl group of 8 to 18 carbon atoms, x is an integer having a value of about 1 to about 10, and M is a cation such as ammonium, alkanolamines such as triethanolamine, monovalent metals such as sodium and potassium, and polyvalent metal cations such as magnesium and calcium.Most preferably, R2Having 12 to 14 carbon atoms, is straight-chain and not branched.
Preferred anionic cleansing surfactants are selected from sodium lauryl sulfate and sodium lauryl ether (n) EO sulfate (where n is 1 to 3); more preferably, sodium lauryl ether (n) EO sulfate (where n is 1 to 3); most preferably, sodium lauryl ether (n) EO sulphate, where n ═ 1.
Typically, the total amount of cleansing surfactant in the hair care compositions of the present invention ranges from 0.5 to 45%, more preferably from 1.5 to 30%, most preferably from 5 to 20%, based on the total weight of the hair care composition, and includes all ranges subsumed therein.
In particularly preferred embodiments, the hair care composition may further comprise co-surfactants (such as amphoteric and zwitterionic surfactants) to provide mildness to the composition.
Examples of amphoteric or zwitterionic surfactants include alkylamine oxides, alkyl betaines, alkylamidopropyl betaines, alkyl sultaines (sultaines), alkyl glycinates, alkyl carboxyglycinates, alkyl amphoacetates (alkyl amphoacetates), alkyl amphopropionates, alkyl amphoglycinates, alkylamidopropyl hydroxysultaines, acyl taurates and acyl glutamates, wherein the alkyl and acyl groups have from 8 to 19 carbon atoms. Typical amphoteric and zwitterionic surfactants for use in the compositions of the present invention include lauryl amine oxide, coco dimethyl sulfopropyl betaine, lauryl betaine, cocamidopropyl betaine, and sodium cocoamphoacetate. Preferably, the co-surfactant is cocamidopropyl betaine (CAPB).
In general, the co-surfactant may be present in the hair care compositions of the present invention in an amount of from 0.5 to 8%, preferably from 1 to 4% by weight of the hair care composition, based on the total weight of the hair care composition, and including all ranges subsumed therein.
Anti-dandruff active substance
In a particularly preferred embodiment, the hair care composition comprises an anti-dandruff agent. Antidandruff agents are compounds having activity against dandruff and are generally antimicrobial agents and preferably antifungal agents.
Suitable anti-dandruff agents include compounds selected from azole-based antifungals, octopirox (octopirox), metal pyrithione salts, selenium sulfide, and mixtures thereof. Preferred azole-based antifungal agents are ketoconazole and climbazole. Preferred metal pyrithione salts are zinc pyrithione, copper pyrithione, silver pyrithione, and zirconium pyrithione. Most preferred are the particulate anti-dandruff actives zinc pyrithione and selenium sulfide.
Typically, the hair care compositions of the present invention comprise an anti-dandruff agent in an amount ranging from 0.01 to 10%, preferably from 0.05 to 5%, most preferably from 0.1 to 2%, based on the total weight of the hair care composition, and including all ranges subsumed therein.
Other ingredients
The hair care compositions of the present invention may contain other ingredients commonly used in the art to enhance physical properties and performance. Suitable ingredients include, but are not limited to, perfumes, suspending agents, dyes and pigments, pH adjusting agents, pearlizing agents (pearlescers) or opacifiers (opacifiers), viscosity modifiers, thickeners, preservatives, antimicrobial agents, and natural hair nutrients such as botanicals (botanicals), fruit extracts, sugar derivatives, and amino acids.
The compositions of the present invention are primarily intended for topical application to the scalp and/or at least a portion of the hair of an individual for the treatment of dry and/or wet, damaged and/or unmanageable hair in rinse-off or leave-on compositions.
The following examples are provided to facilitate an understanding of the present invention. The examples are not provided to limit the scope of the claims.
Examples
The compositions were prepared according to the formulations detailed in table 1. All ingredients are expressed as the amount of active in weight percent of the composition.
Jaguar C17 is a commercial cationic guar from Rhodia with a molecular weight of 2,000,000g/mol and a cationic charge density of 1.0 meq/g.
HD1 is a high charge density (HD) cationic guar made by Rhodia with a molecular weight of 1,200,000g/mol and a cationic charge density of 1.4meq/g, similar to Polymer 2 described in Table 1 of WO 2013/011122.
HD2 is an HD guar made by Rhodia with a molecular weight of 370,000g/mol and a cationic charge density of 1.4meq/g, similar to Polymer 4 described in Table 1 of WO 2013/011122.
DC1788 is a commercial dimethiconol from Dow corning with a particle size of 0.2 μm.
DC1728 is a commercial polydimethylsiloxane from Dow corning pre-blended with a poloxamer, with a particle size of 10 μm.
DM is a polydimethylsiloxane pre-blended with poloxamer, manufactured by Dow corning, which is similar to DC7128, but with a particle size of 2 μm.
TABLE 1
Example 1
This example demonstrates silicone deposition, silicone build-up on hair samples, dry hair friction, and hair volume after treatment with a hair care composition.
Method
Siloxane deposition and siloxane accumulation
The hair tresses (hair switch) were soaked in sodium laureth sulfate (SLES) for several minutes, then rinsed thoroughly under tap water. The tress was combed until the fibers were aligned and then allowed to dry overnight.
The tresses were then held together and pre-wetted with water, after which excess water was removed. The shampoo was applied to five hair tresses and the tresses were allowed to lather (lather) to evenly absorb the shampoo. The tresses were rinsed under tap water, after which excess water was removed. To measure silicone deposition, the shampoo wash and water rinse steps were repeated again. However, to measure siloxane accumulation, the same procedure was repeated eight times. The ratio of silicone deposition after eight washes to silicone deposition after one wash was recorded as silicone buildup in table 2. The tresses were combed until the fibers were aligned and dried overnight for measurement.
Dry friction of hair
The hair tresses were clamped on a bed of a Texture Analyzer (TA) to ensure a flat surface with little or no stray hair fibers. A probe cylinder covered with a rubber sleeve is mounted on the probe arm and lowered onto the tress of hair. A 500 gram weight was placed on the platform of the probe arm and the force taken to move the probe arm along the hair strand was recorded.
Hair volume
The volume of the hair tresses after washing was quantified using instrumental methods. This involves acquiring an image under controlled lighting conditions for each strand of hair held in a vertical position and subjecting the resulting image to image analysis.
TABLE 2
Nm indicates data not measured.
Results
Table 2 shows that sample 2 with high levels of HD guar has comparable silicone accumulation and comparable hair volume to sample 1, but less dry hair friction, confirming that sample 2 has equivalent cleansing performance to sample 1, but provides better conditioning benefits. Sample 4, which had a lower level of HD guar, had comparable dry hair friction to sample 1, but a lower silicone accumulation and a larger hair volume, confirming that sample 4 had comparable hair conditioning performance to sample 1, but better cleaning benefit. Sample 5, where only HD guar was present, demonstrated better conditioning performance than sample 1, but not better than sample 2 in terms of dry hair friction.
Example 2
This example demonstrates the effect of different conditioning agents in a hair care composition.
Two formulations with the same cationic guar ratio but with different conditioners were scored by 36 consumers. The evaluation results are shown in table 3 and significant at 99% confidence level.
TABLE 3
The numbers listed in the table are for the presentation the number of consumers who gave consent. The data clearly shows that sample 3 with a2 μm particle size polydimethylsiloxane gave superior wet and dry conditioning performance than sample 2 with a larger size silicone. This trend is consistent across all different hair types. The consumer expressed a clear preference for sample 3 in its conditioning benefits.
A similar consumer study was performed for sample 1 and sample 3. The results are summarized in table 4 and are significant at the 99% confidence level.
TABLE 4
The data demonstrates that sample 3 also provides significantly better wet and dry conditioning benefits when compared to sample 1.
Example 3
This example demonstrates the cleaning benefits of compositions comprising HD guar and silicone.
Sample 4, which contained HD guar and a greater amount of silicone, was compared to a benchmark formulation sample 6, which contained only one cationic guar (Jaguar C17) and a lesser amount of silicone.
Each formulation was scored for a set of performance attributes by 100 users, and the attributes reported in table 5 showed significant differences at 95% confidence levels. The number recorded is the percentage of persons who give positive answers to a particular attribute of a particular formulation.
TABLE 5
Silicones are known as conditioning agents which deposit onto the hair. Build-up of siloxane deposits can produce unsatisfactory cleaning performance. Surprisingly, sample 4, which had a greater amount of silicone, outperformed sample 6 in terms of cleaning performance. Sample 4 was superior to the benchmark in cleaning hair and scalp.
Example 4
This example demonstrates the deposition of the anti-dandruff agent zinc pyrithione (ZnPTO) on the scalp.
The external skin was treated with shampoo and water, washed by manually rubbing with a plastic stick, and then the liquid was removed. The washing process was repeated again with water, after which the liquid was removed. The in vitro skin was then allowed to dry overnight. ZnPTO deposition on skin in vitro was measured by X-ray fluorescence (XRF). The results are reported in tables 6 and 7.
TABLE 6
| Sample (I) | 8 | 9 |
| ZnPTO depositiona(μg/cm2) | 7.449 | 7.598 |
a. Zinc pyrithione
TABLE 7
| Sample (I) | 1 | 5 | 7 |
| ZnPTO deposition (. mu.g/cm)2) | 5.890 | 5.727 | 3.737 |
The data in tables 6 and 7 demonstrate that the incorporation of HD guar into hair care compositions does not affect ZnPTO deposition. ZnPTO deposition remained consistent even for sample 5 with only HD guar present. However, sample 7, which contained HD2, which had the same charge density as HD1 but a much smaller molecular weight, showed poor ZnPTO deposition.
Claims (16)
1. A hair care composition comprising:
a) a cationic deposition polymer; and
b) discrete dispersed droplets of a water insoluble conditioning agent;
wherein the cationic deposition polymer comprises at least 90 wt% cationically modified guar by weight of the cationic deposition polymer, and wherein the cationically modified guar comprises:
(i) a first cationically modified guar polymer having a charge density greater than 1.2meq/g and a molecular weight of at least 1 million g/mol; and
(ii) a second cationically modified guar polymer having a charge density of 0.8 to 1.2meq/g and a molecular weight of at least 1 million g/mol.
2. The hair care composition of claim 1 wherein the charge density of the second cationically modified guar polymer is from 0.9 to 1.1 meq/g.
3. The hair care composition of claim 1 or claim 2, wherein the molecular weight of the second cationically modified guar polymer is from 1.5 to 3 million g/mol.
4. The hair care composition of any preceding claim wherein the first cationically modified guar polymer has a charge density of from 1.3 to 1.8 meq/g.
5. The hair care composition of any preceding claim wherein the first cationically modified guar polymer has a molecular weight of from 1.1 to 3 million g/mol.
6. The hair care composition of any preceding claim wherein the composition comprises the first cationically-modified guar polymer and the second cationically-modified guar polymer in a weight ratio (first: second) of from 1:10 to 10: 1.
7. The hair care composition of any preceding claim wherein the composition comprises the first and second cationically-modified guar polymers in a total amount of from 0.02 to 1% by weight of the composition.
8. The hair care composition of any preceding claim, wherein the droplets of conditioning agent have an average diameter (D3,2) of less than 5 microns.
9. The hair care composition according to any preceding claims wherein the conditioning agent comprises a silicone oil, preferably a dimethicone, dimethiconol or mixtures thereof.
10. The hair care composition according to any preceding claim, wherein the composition comprises a surface active block polymer, preferably a poloxamer.
11. The hair care composition of claim 10, wherein the block polymer is blended with a silicone oil, preferably a polydimethylsiloxane.
12. The hair care composition of any preceding claim, wherein the composition comprises the water insoluble conditioning agent in an amount of from 0.1 to 10 wt.% of the composition.
13. The hair care composition according to any preceding claims, wherein the composition comprises a particulate anti-dandruff agent, preferably a particulate metal pyrithione salt.
14. The hair care composition of claim 13, wherein the composition comprises a particulate anti-dandruff agent in an amount of from 0.05 to 5% by weight of the composition.
15. The hair care composition according to any preceding claims, wherein the composition comprises an anionic cleansing surfactant, preferably in an amount in the range of from 5 to 20 wt% of the hair care composition.
16. A process for manufacturing a hair care composition according to any one of claims 1 to 15, wherein the process comprises the steps of:
i) selecting a first cationically modified guar polymer having a charge density greater than 1.2meq/g and a molecular weight of at least 1 million g/mol;
ii) selecting a second cationically modified guar polymer having a charge density of from 0.8 to 1.2meq/g and a molecular weight of at least 1 million g/mol;
iii) combining the first and second cationically modified guar polymers with discrete droplets of a water insoluble conditioning agent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013085505 | 2013-10-18 | ||
| CNPCT/CN2013/085505 | 2013-10-18 | ||
| EP13198344 | 2013-12-19 | ||
| EP13198344.7 | 2013-12-19 | ||
| CN201480056443.0A CN105636649A (en) | 2013-10-18 | 2014-10-01 | Hair care composition |
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| CN201480056443.0A Division CN105636649A (en) | 2013-10-18 | 2014-10-01 | Hair care composition |
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| CN201480056443.0A Pending CN105636649A (en) | 2013-10-18 | 2014-10-01 | Hair care composition |
| CN202110075003.1A Pending CN112826760A (en) | 2013-10-18 | 2014-10-01 | Hair care composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CA3060308C (en) * | 2017-04-26 | 2023-05-09 | The Procter & Gamble Company | Hair care compositions comprising anionic polymers and cationic polymers |
| US11679073B2 (en) | 2017-06-06 | 2023-06-20 | The Procter & Gamble Company | Hair compositions providing improved in-use wet feel |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072589A (en) * | 1991-10-29 | 1993-06-02 | 普罗斯特-甘布尔公司 | The hair-washing composition that contains silicone, cationic polymer and oily liquid conditioning agents |
| JP2006169410A (en) * | 2004-12-16 | 2006-06-29 | Toho Chem Ind Co Ltd | Cationically modified purified guar gum and cosmetics composition containing the above material |
| CN100430042C (en) * | 2002-11-12 | 2008-11-05 | 荷兰联合利华有限公司 | Compositions for washing and conditioning hair |
| WO2013011122A1 (en) * | 2011-07-21 | 2013-01-24 | Rhodia Operations | Guar hydroxypropyltrimethylammonium chloride and uses thereof in hair treatment compositions |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0210791D0 (en) * | 2002-05-10 | 2002-06-19 | Unilever Plc | Hair conditioning compositions |
| CN1703187A (en) * | 2002-10-10 | 2005-11-30 | 宝洁公司 | Hair conditioning composition comprising thickening polymer and cationic surfactant |
| BRPI1007603B1 (en) * | 2009-05-08 | 2017-02-07 | Unilever Nv | "hair treatment composition" |
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2014
- 2014-10-01 CN CN201480056443.0A patent/CN105636649A/en active Pending
- 2014-10-01 CN CN202110075003.1A patent/CN112826760A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1072589A (en) * | 1991-10-29 | 1993-06-02 | 普罗斯特-甘布尔公司 | The hair-washing composition that contains silicone, cationic polymer and oily liquid conditioning agents |
| CN100430042C (en) * | 2002-11-12 | 2008-11-05 | 荷兰联合利华有限公司 | Compositions for washing and conditioning hair |
| JP2006169410A (en) * | 2004-12-16 | 2006-06-29 | Toho Chem Ind Co Ltd | Cationically modified purified guar gum and cosmetics composition containing the above material |
| WO2013011122A1 (en) * | 2011-07-21 | 2013-01-24 | Rhodia Operations | Guar hydroxypropyltrimethylammonium chloride and uses thereof in hair treatment compositions |
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