WO2006091189A1 - Compositions comprenant des particules suspendues - Google Patents

Compositions comprenant des particules suspendues Download PDF

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Publication number
WO2006091189A1
WO2006091189A1 PCT/US2005/005390 US2005005390W WO2006091189A1 WO 2006091189 A1 WO2006091189 A1 WO 2006091189A1 US 2005005390 W US2005005390 W US 2005005390W WO 2006091189 A1 WO2006091189 A1 WO 2006091189A1
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WO
WIPO (PCT)
Prior art keywords
composition
hydrophobically
weight percent
particles
acrylic polymer
Prior art date
Application number
PCT/US2005/005390
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English (en)
Inventor
Joseph Librizzi
Russell Walters
Kristen Sweeney
Original Assignee
Johnson & Johnson Consumer Companies, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Johnson & Johnson Consumer Companies, Inc. filed Critical Johnson & Johnson Consumer Companies, Inc.
Priority to PCT/US2005/005390 priority Critical patent/WO2006091189A1/fr
Priority to EP05723379A priority patent/EP1853693A4/fr
Publication of WO2006091189A1 publication Critical patent/WO2006091189A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04—Dispersions; Emulsions
    • A61K8/044—Suspensions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
    • A61K8/463—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfuric acid derivatives, e.g. sodium lauryl sulfate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A61K8/8141—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • A61K8/8147—Homopolymers or copolymers of acids; Metal or ammonium salts thereof, e.g. crotonic acid, (meth)acrylic acid; Compositions of derivatives of such polymers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A61Q19/10—Washing or bathing preparations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • A61Q5/02—Preparations for cleaning the hair
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
    • C08K5/41—Compounds containing sulfur bound to oxygen
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/29—Sulfates of polyoxyalkylene ethers
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
    • C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
    • C11D17/0013—Liquid compositions with insoluble particles in suspension
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/37—Polymers
    • C11D3/3746—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C11D3/3757—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
    • C11D3/3765—(Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions in liquid compositions

Definitions

  • the present invention is directed to compositions having particles suspended therein and, more particularly, to compositions in which particles are suspended with unexpectedly high stability and methods of suspending particles in such compositions.
  • Beads or particles tend to impart, or contribute to, a multitude of user benefits associated with personal care compositions including but not limited to: abrasion, visual impact or esthetics, and/or the encapsulation and release of separate phases upon use.
  • Applicants have nevertheless recognized that the addition of beads or particles to personal care compositions tends to be problematic.
  • one problem recognized by applicants is that particles very frequently tend to be of a different density than the majority phase of the composition to which they are added. This mismatch in the density can lead to separation of the particles from the majority phase and a lack of overall product stability. That is, when added particles are less dense than the composition majority phase, the particles tend to rise to the top of such phase (often referred to in the art as "creaming"). When the added particles have a density greater than the majority phase, the particles tend to fall to the bottom of such phase (often referred to in the art as "settling").
  • the driving force of separation is the density mismatch between the particles and the majority phase of composition, as the radius of a particle to be added to the composition increases, the driving force for separation increases, resulting in a particle that is more likely to settle or cream in the composition.
  • Applicants have thus recognized that the apparent relationship of particle size to likelihood of separation makes the stability problem all the more challenging. Since particles are often conventionally supplied with a broad distribution of sizes, the stability of the composition including such particles depends on the stability of the largest particles in the distribution, or the particles that are most difficult to maintain in suspension. Applicants have recognized that one conventional approach to slowing the separation of particles from compositions is to make the composition more viscous.
  • HMPs hydrophobically-modified polymers
  • Applicants have recognized, however, that merely increasing the viscosity of a composition via the addition of polymers tends only to slow the velocity of the particles and the rate of their separation from the majority phase, rather then prevent or more effectively impede separation. More ideally, applicants have recognized that a better solution would involve modifying the rheology of the formula to suspend the beads such that no separation occurs.
  • the levels of HMPs required to effectively suspend particles in conventional compositions tends also to impart rheology/aesthetic characteristics to the compositions that are unacceptable from a consumer standpoint.
  • compositions comprising HMPs that not only exhibit the ability to effectively suspend particles therein, but also exhibit desirable rheology/aesthetic characteristics.
  • the present invention provides compositions comprising a hydrophobically-modified acrylic polymer, sodium trideceth sulfate, and one or more particles suspended therein.
  • the present invention provides methods of suspending a particle comprising combining at least one particle with a hydrophobically- modified acrylic polymer and sodium trideceth sulfate to produce a composition comprising said hydrophobically-modified acrylic polymer and sodium trideceth sulfate in which said at least one particle is suspended.
  • the present invention overcomes the disadvantages of the prior art by providing compositions comprising HMPs that are capable of forming unexpectedly stable suspensions of particles therein as compared to conventional compositions.
  • HMPs that are capable of forming unexpectedly stable suspensions of particles therein as compared to conventional compositions.
  • applicants have discovered unexpectedly that certain HMPs can be combined with sodium trideceth sulfate in amounts suitable to produce compositions exhibiting surprisingly high stability for suspending particles therein as compared to conventional compositions and desirable aesthetics for a variety of uses.
  • the present invention provides compositions comprising at least one hydrophobically-modified acrylic polymer, sodium trideceth sulfate, and one or more particles suspended therein which compositions are unexpectedly stable and exhibit desirable aesthetics.
  • the yield point of a particular composition is a measure of the ability of a composition to effectively suspend a particle or particles therein.
  • a composition with a yield point tends not to begin to flow until the stress applied to the systems exceeds the yield point and the structure of the system is disturbed. When the stress is below the yield point, the system displays elastic behavior, or 'solid-like' behavior.
  • the higher the yield point of a composition the greater its ability to suspend particles therein tends to be.
  • the compositions of the present invention tend to have unexpectedly high yield values associated therewith as compared to conventional compositions.
  • the present compositions have a yield value of about 4 or greater. In more preferred embodiments, the compositions have a yield value of about 7 or greater, more preferably about 9 or greater, even more preferably about 10 or greater, and even more preferably about 12 or greater.
  • compositions of the present invention also tend to have relatively low G' and G" values (desirable aesthetics) associated therewith.
  • certain preferred compositions exhibit a G' at 50 rad/s of about 130 or less, more preferably about 120 or less, and even more preferably about 100 or less, and a G" at 50 rad/s of about 180 or less, more preferably about 160 or less, and even more preferably about 140 or less.
  • hydrophobically-modified polymers refers generally to polymers having one or more hydrophobic moieties attached thereto or incorporated therein. Such polymers may be formed, for example, by polymerizing one or more hydrophobic monomers and, optionally, one or more co-monomers, to form a polymer having hydrophobic moieties incorporated therein, and/or also by reacting polymer materials with compounds comprising hydrophobic moieties to attach such compounds to the polymers.
  • hydrophobically-modified polymers for use in the present invention include hydrophobically-modified acrylic polymers.
  • Hydrophobically- modified acrylic polymers suitable for use in the present invention may be in the form of random, block, star, graft copolymers, and the like.
  • the hydrophobically-modified acrylic polymers are crosslmked, anionic acrylic copolymers.
  • Such copolymers may be synthesized from at least one acidic monomer and at least one hydrophobic ethylenically unsaturated monomer.
  • suitable acidic monomers include those ethylenically unsaturated acid monomers that may be neutralized by a base.
  • suitable hydrophobic ethylenically unsaturated monomers include those that contain a hydrophobic chain having a carbon chain length of at least 3 carbon atoms.
  • the hydrophobically-modified, crosslinked, anionic acrylic copolymer includes those compositions derived from at least one unsaturated carboxylic acid monomer; at least one hydrophobic monomer; a hydrophobic chain transfer agent comprising alkyl mercaptans, thioesters, amino acid-mercaptan-containing compounds or peptide fragments, or combinations thereof; a cross-linking agent; and, optionally, a steric stabilizer; wherein the amount of said unsaturated carboxylic acid monomer is from about 60% to about 98% by weight based upon the total weight of said unsaturated monomers and said hydrophobic monomer, as set forth in United States Patent No. 6,433,061, which is incorporated by reference herein.
  • the polymer is an acrylates copolymer that is commercially available from Noveon, Inc. under the tradename, "Carbopol Aqua SF-I.”
  • compositions of the present invention comprise from about 0.8 to about 30, preferably from about 0.8 to about 15, more preferably from about 1 to about 10, and even more preferably about 1 to about 3 weight percent of hydrophobically-modified polymer.
  • weight percents refer to weight percent of active material based on the total weight percent of the composition, unless otherwise indicated.
  • Sodium trideceth sulfate is the sodium salt of sulfated ethoxylated tridecyl alcohol that conforms generally to the following formula, Ci 3 H 27 (OCH 2 CH 2 ) n OSO 3 Na, where n has a value between 1 and 4.
  • Sodium trideceth sulfate derived from any commercial, synthetic, or other source is suitable for use herein.
  • sodium trideceth sulfate is commercially available from Stepan Company of Northfield, Illinois under the tradename, "Cedapal TD-403M.” Applicants have recognized that sodium trideceth sulfate can be used to particular advantage to obtain compositions having significantly stablilized suspensions of particles therein.
  • compositions of the present invention comprise from about 0.1 to about 90, preferably from about 0.1 to about 25, more preferably from about 1 to about 8, and even more preferably about 2 to about 4 weight percent of sodium trideceth sulfate.
  • any of a variety of suitable particulate materials may be used as particles for suspension in the present compositions.
  • the type of particles being suspended can include many different morphologies and compositions.
  • the particles can be solid, hollow, or porous.
  • the particles can also encapsulate a phase separate and/or different from the majority phase of the composition.
  • the particles can be comprised of any of a variety of materials including synthetic polymers such as polyethylene, polystyrene, poly gelatins, arabic gums, collagens, polypeptides from vegetable or animal origin, alginates, polyamides, glycosamino glycans, mucopolysaccharides, ethylcellulose, combinations two or more thereof, and the like.
  • Examples of certain commercially available particles include: Jojoba esters particles available from FloraTech (Gilbert, Arizona) under the trade name Floraspheres, and Florasomes with sizes between 500 to 1500 microns, beads of microcrystalline wax available form FloraTech under the trade name Metabeads, polyethylene particles from Lipo Chemical Inc. (Paterson, NJ) under the trade name Liposcrubm, walnut shell particles from Lipo Chemical Inc. (Paterson, NJ) under the trade name Lipo WSF, and the like.
  • particles are supplied commercially with a wide distribution of sizes.
  • particles suitable for use herein comprise diameters of from about 200 to about 2500 micron.
  • the particles have diameters of from about 400 to about 2000 micron, and even more preferably from about 800 to about 1800 micron.
  • the present compositions comprise from about 0.1 wt. % to about 10 wt. %, more preferably 0.5 wt. % to 5 wt. %, and most preferably from 0.5 wt. % to 3 wt. % of particulate matter.
  • hydrophobically-modified polymers, sodium trideceth sulfate, and particulate matter may be combined according to the present invention via any conventional methods of combining two or more fluids, or two or more fluids with particulate matter, in any order, to suspend the particulate matter therein and achieve a composition of the present invention.
  • a composition of the present invention may be combined by pouring, mixing, adding dropwise, pipetting, pumping, and the like, where appropriate, one or more HMP, sodium trideceth sulfate, and/or one or more particles into or with any other component, in any order, using any conventional equipment such as a mechanically stirred propeller, paddle, glass rod, and the like.
  • the combining step comprises combining a composition comprising sodium trideceth sulfate into or with a composition comprising a hydrophobically-modified polymer, and then adding particulate matter thereto.
  • the combining step comprises combining a composition comprising a hydrophobically- modif ⁇ ed polymer into or with a composition comprising sodium trideceth sulfate and then adding particulate matter thereto, hi other preferred embodiments, either one or the other or both of the hydrophobically-modified polymer and sodium trideceth sulfate are added subsequently to a composition comprising the particulate matter
  • compositions produced, as well as any of the compositions comprising hydrophobically-modified polymers, sodium trideceth sulfate, and or particulate matter that are combined in the combining step according to the present methods may further comprise any of a variety of other components nonexclusively including one or more anionic, nonionic, amphoteric, and/or cationic surfactants, pearlescent or opacifying agents, thickening agents, secondary conditioners, humectants, chelating agents, and additives which enhance the appearance, feel and fragrance of the compositions, such as colorants, fragrances, preservatives, pH adjusting agents, and the like.
  • suitable anionic surfactants include those selected from the following classes of surfactants: alkyl sulfates, alkyl ether sulfates, alkyl monoglyceryl ether sulfates, alkyl sulfonates, alkylaryl sulfonates, alkyl sulfosuccinates, alkyl ether sulfosuccinates, alkyl sulfosuccinamates, alkyl amidosulfosuccinates, alkyl carboxylates, alkyl amidoethercarboxylates, alkyl succinates, fatty acyl sarcosinates, fatty acyl amino acids, fatty acyl taurates, fatty alkyl sulfoacetates, alkyl phosphates, and mixtures of two or more thereof.
  • Examples of certain preferred anionic surfactants include: alkyl sulfates of the formula
  • alkyl monoglyceride sulfates of the formula R 1 CO 2 CH 2 CHCH 2 OSO 3 X' ; OH
  • alkyl monoglyceride sulfonates of the formula
  • alkyl sulfonates of the formula
  • alkyl sulfosuccinates of the formula:
  • alkyl ether sulfosuccinates of the formula:
  • R' is an alkyl group having from about 7 to about 22, and preferably fom about 7 to about 16 carbon atoms,
  • R' i is an alkyl group having from about 1 to about 18, and preferably from about 8 to about 14 carbon atoms,
  • R 2 is a substituent of a natural or synthetic I-amino acid
  • X' is selected from the group consisting of alkali metal ions, alkaline earth metal ions, ammonium ions, and ammonium ions substituted with from about 1 to about 3 substituents, each of the substituents may be the same or different and are selected from the group consisting of alkyl groups having from 1 to 4 carbon atoms and hydroxyalkyl groups having from about 2 to about 4 carbon atoms and v is an integer from 1 to 6; w is an integer from O to 20; and mixtures thereof.
  • nonionic surfactants are suitable for use in the present invention.
  • suitable nonionic surfactants include, but are not limited to, fatty alcohol acid or amide ethoxylates, monoglyceride ethoxylates, sorbitan ester ethoxylates alkyl polyglycosides, mixtures thereof, and the like.
  • Certain preferred nonionic surfactants include polyoxyethylene derivatives of polyol esters, wherein the polyoxyethylene derivative of polyol ester (1) is derived from (a) a fatty acid containing from about 8 to about 22, and preferably from about 10 to about 14 carbon atoms, and (b) a polyol selected from sorbitol, sorbitan, glucose, ⁇ -methyl glucoside, polyglucose having an average of about 1 to about 3 glucose residues per molecule, glycerine, pentaerythritol and mixtures thereof, (2) contains an average of from about 10 to about 120, and preferably about 20 to about 80 oxyethylene units; and (3) has an average of about 1 to about 3 fatty acid residues per mole of polyoxyethylene derivative of polyol ester.
  • the polyoxyethylene derivative of polyol ester (1) is derived from (a) a fatty acid containing from about 8 to about 22, and preferably from about 10 to about 14 carbon atoms, and (b) a poly
  • polystyrene foams examples include, but are not limited to PEG- 80 sorbitan laurate and Polysorbate 20.
  • PEG-80 sorbitan laurate which is a sorbitan monoester of lauric acid ethoxylated with an average of about 80 moles of ethylene oxide, is available commercially from ICI Surfactants of Wilrnington, Delaware under the tradename, "Atlas G-4280.”
  • Polysorbate 20 which is the laurate monoester of a mixture of sorbitol and sorbitol anhydrides condensed with approximately 20 moles of ethylene oxide, is available commercially from ICI Surfactants of Wilrnington, Delaware under the tradename "Tween 20.”
  • Suitable nonionic surfactants includes long chain alkyl glucosides or polyglucosides, which are the condensation products of (a) a long chain alcohol containing from about 6 to about 22, and preferably from about 8 to about 14 carbon atoms, with (b) glucose or a glucose-containing polymer.
  • Preferred alkyl gluocosides comprise from about 1 to about 6 glucose residues per molecule of alkyl glucoside.
  • a preferred glucoside is decyl glucoside, which is the condensation product of decyl alcohol with a glucose polymer and is available commercially from Henkel Corporation of Hoboken, New Jersey under the tradename, "Plantaren 2000.”
  • the term "amphoteric” shall mean: 1) molecules that contain both acidic and basic sites such as, for example, an amino acid containing both amino (basic) and acid (e.g., carboxylic acid, acidic) functional groups; or 2) zwitterionic molecules which possess both positive and negative charges within the same molecule. The charges of the latter may be either dependent on or independent of the pH of the composition.
  • amphoteric surfactants are disclosed herein without a counter ion.
  • the amphoteric surfactants are either electrically neutral by virtue of having balancing positive and negative charges, or they have counter ions such as alkali metal, alkaline earth, or ammonium counter ions.
  • amphoteric surfactants suitable for use in the present invention include, but are not limited to, amphocarboxylates such as alkylamphoacetates (mono or di); alkyl betaines; amidoalkyl betaines; amidoalkyl sultaines; amphophosphates; phosphorylated imidazolines such as phosphobetaines and pyrophosphobetaines; carboxyalkyl alkyl polyamines; alkylimino-dipropionates; alkylamphoglycinates (mono or di); alkylamphoproprionates (mono or di),); N-alkyl ⁇ -aminoproprionic acids; alkylpolyamino carboxylates; and mixtures thereof.
  • amphocarboxylates such as alkylamphoacetates (mono or di); alkyl betaines; amidoalkyl betaines; amidoalkyl sultaines; amphophosphates; phosphorylated imidazolines
  • amphocarboxylate compounds include those of the formula:
  • A is an alkyl or alkenyl group having from about 7 to about 21, e.g. from about 10 to about 16 carbon atoms; x is an integer of from about 2 to about 6;
  • R 5 is hydrogen or a carboxyalkyl group containing from about 2 to about 3 carbon atoms
  • R 6 is a hydroxyalkyl group containing from about 2 to about 3 carbon atoms or is a group of the formula: R 8 -O-(CH 2 ) n CO 2 - wherein
  • R 8 is an alkylene group having from about 2 to about 3 carbon atoms and n is 1 or 2;
  • R 7 is a carboxyalkyl group containing from about 2 to about 3 carbon atoms;
  • suitable alkyl betaines include those compounds of the formula:
  • B is an alkyl or alkenyl group having from about 8 to about 22, e.g., from about 8 to about 16 carbon atoms;
  • R 9 and R 10 are each independently an alkyl or hydroxyalkyl group having from about 1 to about 4 carbon atoms; and p is 1 or 2.
  • a preferred betaine for use in the present invention is lauryl betaine, available commercially from Albright & Wilson, Ltd. of West Midlands, United Kingdom as "Empigen BB/J.”
  • amidoalkyl betaines examples include those compounds of the formula:
  • D is an alkyl or alkenyl group having from about 7 to about 21, e.g. from about 7 to about 15 carbon atoms;
  • R 1 j and Ri 2 are each independently an alkyl or
  • Hydroxyalkyl group having from about 1 to about 4 carbon atoms; q is an integer from about 2 to about 6; and m is 1 or
  • amidoalkyl betaine is cocamidopropyl betaine, available commercially from Goldschmidt Chemical Co ⁇ oration of Hopewell, Virginia under the tradename, "Tegobetaine L7.”
  • amidoalkyl sultaines examples include those compounds of the formula
  • E is an alkyl or alkenyl group having from about 7 to about 21, e.g. from about 7 to about 15 carbon atoms;
  • R 14 and Ri 5 are each independently an alkyl, or hydroxyalkyl group having from about 1 to about 4 carbon atoms; r is an integer from about 2 to about 6; and
  • R 13 is an alkylene or hydroxyalkylene group having from about 2 to about 3 carbon atoms; m one embodiment, the amidoalkyl sultaine is cocamidopropyl hydroxysultaine, available commercially from Rhone-Poulenc Inc. of Cranbury, New Jersey under the tradename, "Mirataine CBS.”
  • amphophosphate compounds include those of the formula:
  • G is an alkyl or alkenyl group having about 7 to about 21, e.g. from about 7 to about 15 carbon atoms; s is an integer from about 2 to about 6; Ri 6 is hydrogen or a carboxyalkyl group containing from about 2 to about 3 carbon atoms;
  • Rn is a hydroxyalkyl group containing from about 2 to about 3 carbon atoms or a group of the formula:
  • Ri 9 is an alkylene or hydroxyalkylene group having from about 2 to about 3 carbon atoms and t is 1 or 2;
  • Ri 8 is an alkylene or hydroxyalkylene group having from about 2 to about 3 carbon atoms.
  • the amphophosphate compounds are sodium lauroampho PG- acetate phosphate, available commercially from Mona Industries of Paterson, New Jersey under the tradename, "Monateric 1023," and those disclosed in U.S. Patent 4,380,637, which is incorporated herein by reference.
  • Suitable phosphobetaines include those compounds of the formula:
  • the phosphobetaine compounds are those disclosed in U.S. Patent Nos. 4,215,064, 4,617,414, and 4,233,192, which are all incorporated herein by reference.
  • Suitable pyrophosphobetaines include those compounds of the formula: E— ? C-NH- (CH 2 ) r e-frN-R r O— ? P— O— ? P— OH
  • E, r, Ri, R 2 and R 3 are as defined above.
  • the pyrophosphobetaine compounds are those disclosed in U.S. Patent Nos. 4,382,036, 4,372,869, and 4,617,414, which are all incorporated herein by reference.
  • carboxyalkyl alkylpolyamines examples include those of the formula:
  • I is an alkyl or alkenyl group containing from about 8 to about 22, e.g. from about 8 to about 16 carbon atoms;
  • R 22 is a carboxyalkyl group having from about 2 to about 3 carbon atoms
  • R 2I is an alkylene group having from about 2 to about 3 carbon atoms and u is an integer from about 1 to about 4.
  • Classes of cationic surfactants that are suitable for use in this invention include alkyl quaternaries (mono, di, or tri), benzyl quaternaries, ester quaternaries, ethoxylated quaternaries, alkyl amines, and mixtures thereof, wherein the alkyl group has from about 6 carbon atoms to about 30 carbon atoms, with about 8 to about 22 carbon atoms being preferred.
  • pearlescent or opacifying agents which are capable of suspending water insoluble additives such as silicones and/or which tend to indicate to consumers that the resultant product is a conditioning shampoo are suitable for use in this invention.
  • the pearlescent or opacifying agent may be present in an amount, based upon the total weight of the composition, of from about 1 percent to about 10 percent, e.g. from about 1.5 percent to about 7 percent or from about 2 percent to about 5 percent.
  • suitable pearlescent or opacifying agents include, but are not limited to mono or diesters of (a) fatty acids having from about 16 to about 22 carbon atoms and (b) either ethylene or propylene glycol; mono or diesters of (a) fatty acids having from about 16 to about 22 carbon atoms (b) a polyalkylene glycol of the formula: HO-(JO) 3 -H, wherein J is an alkylene group having from about 2 to about 3 carbon atoms; and a is 2 or 3;fatty alcohols containing from about 16 to about 22 carbon atoms; fatty esters of the formula: KCOOCH 2 L, wherein K and L independently contain from about 15 to about 21 carbon atoms; inorganic solids insoluble in the shampoo composition, and mixtures thereof
  • the pearlescent or opacifying agent may be introduced to the mild cleansing composition as a pre-formed, stabilized aqueous dispersion, such as that commercially available from Henkel Corporation of Hoboken, New Jersey under the tradename, "Euperlan PK-3000.”
  • This material is a combination of glycol distearate (the diester of ethylene glycol and stearic acid), Laureth-4 (CH 3 (CH 2 ) 10 CH 2 (OCH 2 CH 2 ) 4 OH) and cocamidopropyl betaine and may be in a weight percent ratio of from about 25 to about 30: about 3 to about 15: about 20 to about 25, respectively.
  • any of a variety of commercially available thickening agents, which are capable of imparting the appropriate viscosity to the personal cleansing compositions are suitable for use in this invention. If used, the thickener should be present in the shampoo compositions in an amount sufficient to raise the Brookfield viscosity of the composition to a value of between about 500 to about 10,000 centipoise.
  • suitable thickening agents nonexclusively include: mono or diesters of 1) polyethylene glycol of formula: HO- (CH 2 CH 2 O) 2 H, wherein z is an integer from about 3 to about 200; and 2) fatty acids containing from about 16 to about 22 carbon atoms; fatty acid esters of ethoxylated polyols; ethoxylated derivatives of mono and diesters of fatty acids and glycerine; hydroxyalkyl cellulose; alkyl cellulose; hydroxyalkyl alkyl cellulose; and mixtures thereof.
  • Preferred thickeners include polyethylene glycol ester, and more preferably PEG- 150 distearate which is available from the Stepan Company of Northfield, Illinois or from Comiel, S.p.A. of Bologna, Italy under the tradename, "PEG 6000 DS".
  • Any of a variety of commercially available secondary conditioners, such as volatile silicones, which impart additional attributes, such as gloss to the hair are suitable for use in this invention, hi one embodiment, the volatile silicone conditioning agent has an atmospheric pressure boiling point less than about 220 C.
  • the volatile silicone conditioner may be present in an amount of from about 0 percent to about 3 percent, e.g. from about 0.25 percent to about 2.5 percent or from about 0.5 percent to about 1.0 percent, based on the overall weight of the composition.
  • suitable volatile silicones nonexclusively include polydimethylsiloxane, polydimethylcyclosiloxane, hexamethyldisiloxane, cyclomethicone fluids such as polydimethylcyclosiloxane available commercially from Dow Corning Corporation of Midland, Michigan under the tradename, "DC-345" and mixtures thereof, and preferably include cyclomethicone fluids.
  • humectants which are capable of providing moisturization and conditioning properties to the personal cleansing composition, are suitable for use in the present invention.
  • the humectant may be present in an amount of from about 0 percent to about 10 percent, e.g. from about 0.5 percent to about 5 percent or from about 0.5 percent to about 3 percent, based on the overall weight of the composition.
  • humectants nonexclusively include: 1) water soluble liquid polyols selected from the group comprising glycerine, propylene glycol, hexylene glycol, butylene glycol, dipropylene glycol, and mixtures thereof; 2)polyalkylene glycol of the formula: HO- (R'O) b -H, wherein R" is an alkylene group having from about 2 to about 3 carbon atoms andb is an integer of from about 2 to about 10; 3) polyethylene glycol ether of methyl glucose of formula CH 3 -C 6 H 10 O 5 -(OCH 2 CH 2 ) c -OH, wherein c is an integer from about 5 to about 25; 4) urea; and 5) mixtures thereof, with glycerine being the preferred humectant.
  • chelating agents include those which are capable of protecting and preserving the compositions of this invention.
  • the chelating agent is ethylenediamine tetracetic acid ("EDTA”), and more preferably is tetrasodium EDTA, available commercially from Dow Chemical Company of Midland, Michigan under the tradename, "Versene 100XL” and is present in an amount, based upon the total weight of the composition, from about 0 to about 0.5 percent or from about 0.05 percent to about 0.25 percent.
  • EDTA ethylenediamine tetracetic acid
  • Versene 100XL tetrasodium EDTA
  • Suitable preservatives include Quaternium-15, available commercially as "Dowicil 200" from the Dow Chemical Corporation of Midland, Michigan, and are present in the composition in an amount, based upon the total weight of the composition, from about 0 to about 0.2 percent or from about 0.05 percent to about 0.10 percent.
  • the methods of the present invention may further comprise any of a variety of steps for mixing or introducing one or more of the optional components described hereinabove with or into a composition comprising a hydrophobically-modified material and/or sodium trideceth sulfate either before, after, or simultaneously with the combining step described above. While in certain embodiments, the order of mixing is not critical, it is preferable, in other embodiments, to pre-blend certain components, such as the fragrance and the nonionic surfactant before adding such components into a composition of the present invention.
  • compositions produced via the present invention are preferably used as or in personal care products such as shampoos, washes, baths, gels, lotions, creams, and the like.
  • personal care products such as shampoos, washes, baths, gels, lotions, creams, and the like.
  • the instant methods allow for the formulation of such personal care products having unexpectedly high stability of suspended particles therein, as well as, preferred aesthetic properties.
  • compositions of Table 1 were prepared as follows: Water (27.0 parts) was added to a beaker. The Carbopol AQUA SFl was added to the water while mixing. Once homogenous, the anionic surfactant (Cedepal TD403LD in Example #1, Rhodapex ES2K in Example #2) was added to the water with mixing. The following ingredients were added thereto independently with mixing until each respective resulting mixture was homogenous: Tegobetaine L7V, Planatern 2000, Monateric 1023, Glycerin and Glucamate LT. In a separate beaker, Jaguar C 17 was mixed with 25 parts of water until a homogenous solution was made. The Jaguar C17/Water premix was then added to the main batch and mixed until homogenous.
  • the oscillatory stress was increased from 0.10 Pa to 15920 Pa, while the frequency was held constant at 1.00 Hz. Seven (7) data points where collected over each decade of the oscillatory stress sweep.
  • the yield point is the stress at which the linear- elastic range is exceeded.
  • the yield point was defined in a manner consistent in the art and with, for example, the methodology described in Mezger, The Rheology Handbook. Vincentz Verlag (Hanover, Germany) 2002, pp. 33-36 and 134. That is, from a plot of the natural log (hi) of the stress, ln(stress), and the ln(strain). At low stress, there is a linear relationship between the ln(stress) and the ln(strain).
  • the linear viscoelastic region was determined from the data from the oscillatory stress sweep, and the oscillatory frequency was conducted within the linear viscoelastic region.
  • the oscillatory frequency was increased from 0.001 to 100 Hz, while the oscillatory stress was held constant at 1.00 Pa.
  • Ten (10) Data points were collected over each decade of the oscillatory frequency sweep.
  • G' & G" values are shown from selected oscillatory frequencies in Table 2.
  • Example 2 The yield point of Example 2 (12.2 Pa) is significantly higher (45% higher) than the yield point of Example 1 (8.4 Pa). This larger yield point suggests that Example 2 has a superior ability to suspend particles compared to Example 1.
  • the elastic modulus, G', and viscous modulus, G" were measure over a range of frequencies. Very low frequencies ( ⁇ 0.1 rad/s), or long time scales, reflect how the formula behaves while in the bottle during the shelf life of the product. While higher frequencies (>1 rad/s), or short time scales, reflect how the consumer experiences the product while in use. As seen in Table 2, at low frequencies (0.01 rad/s) Example 2 has a significantly higher elastic modulus than Example 1, or Example 2 is more solid-like than Example 1 while in the bottle. The higher G' of Example 2 also suggests that Example 2 has superior ability to suspend particles compared to Example 1.
  • Example 2 and Example 1 While at high frequencies (50 rad/s), Example 2 and Example 1 have essentially the same elastic modulus and also nearly the same viscous modulus. At higher frequencies, relevant to in use conditions, Example 1 and Example 2 have essentially the same rheology. The higher frequency rheology is not relevant to the ability to suspend particles. This suggests that in use Example 1 and Example 2 would provide the same experience to consumers.
  • compositions of Table 3 were prepared as follows:
  • Example 3 a majority of the beads have risen to the top of the jar. After aging, the bottom half (regions 1, 2, and 3) of the formula in Example 3 retains only 8.8% of the initial distribution of beads). Example 3 displays nearly fully or complete separation of the beads from the formula. In contrast, Example 4 shows a modest enrichment of the beads at the top of the jar. After aging, the bottom half (regions 1, 2, and 3) of the formula in Example 4 retains 71% of the initial distribution of beads). As mentioned earlier, the particles are supplied with a distribution of sizes. The few particles that separated were most likely the particles on the large end of the distribution. Example 4 displays slight or early separation of the beads from the formula. Example 4 has a superior ability to suspend beads compared to Example 3.
  • Example 5 The compositions of Example 5 and 6 were prepared according to the materials and amounts listed in Table 5:
  • compositions of Table 5 were prepared as follows: HPLC grade water (50.0 parts) was added to a beaker. The Carbopol Aqua SFl in was added to the water with mixing. The pH of the resulting solution was then adjusted with a 20% Sodium Hydroxide solution (as needed) until a final pH of about 7.0 was obtained. The remainder of the water was then added thereto.
  • a well-known method to measure the surface tension of surfactant solutions is the Wilhelmy plate method (Holmberg, K.; Jonsson, B.; Kronberg, B.; Lindman, B. Surfactants and Polymers in Aqueous Solution, Wiley & Sons, p. 347).
  • a plate is submerged into a liquid and the downward force exerted by of the liquid on the plate is measured.
  • the surface tension of the liquid can then be determined based on the force on the plate and the dimensions of the plate. It is also well known that by measuring the surface tension over a range of concentrations the critical micelle concentration (CMC) can then be determined.
  • CMC critical micelle concentration
  • the solution initially in the sample vessel before the titration begins, into which the second solution is dosed, will be referred to hereinafter as the initial solution, and the solution that is dosed into the sample vessel during the titration will be referred to hereinafter as the dosing solution, in accordance with the convention used by Kruss USA.
  • the concentration of the initial solution is lower than the concentration of the dosing solution.
  • the initial solution was HLPC grade water (Fischer Scientific, NJ), with no surfactant.
  • the dosing solution was a solution of either sodium laureth sulfate (Example 5, 6) or sodium trideceth sulfate (Example 7, 8) and HLPC grade water (Fischer Scientific, NJ) with a concentration of 5750 mg/L.
  • a large stock solution, 4L, of each dosing surfactant solution was prepared before hand; sodium laureth sulfate (Stepan Company, Northfield, IL) or sodium trideceth sulfate (Stepan Company, Northfield, IL) was added to HLPC grade water (Fischer Scientific, NJ) to a concentration of 5750 mg/L.
  • Critical Micelle Concentration Values The compositions prepared in accordance with Examples 5, 6 7 and 8 were tested for Critical Micelle Concentration (CMC) values using the forward titration tensiometry experiment.
  • the initial solution was 50 ml.
  • the dosing solution was 5750 mg/L of sodium laureth sulfate or sodium trideceth sulfate and HPLC grade water. 42 dose were performed, which increased the sodium trideceth concentration from 0 mg/L in the initial solution up to 3771 mg/L at the final measurement.
  • the CMC is the surfactant concentration (sodium laureth sulfate in Examples 5 and 6 and sodium trideceth sulfate in Examples 7 and 8) at which free micelles begin to form. At surfactant concentration below the CMC, no surfactant exist as free micelles, while at concentrations above the CMC free micelles are present in solution, hi Example 8, free micelles begin to form at 400 mg/L of trideceth sulfate.
  • HMP in Example 6 and 8
  • the free monomer concentration is reduced proportional to the amount of surfactant associated with the material.
  • the magnitude of the Delta CMC suggests the amount of surfactant that the material is capable of associating with, or the efficiency of the material in associating surfactant.
  • Example 8 the concentration of Carbopol Aqua SF-I was 500 mg/L, and the CMC was 400 mg/L of sodium trideceth sulfate, while the CMC of sodium trideceth sulfate without SF-I was 125 mg/L. Therefore, the material of Example 8 associated with 275 mg of sodium trideceth sulfate per every 500 mg of material, or 0.55g of sodium trideceth sulfate per 1.0 g of Aqua SF-I . While in Example 6 the same concentration of Carbopol Aqua SF-I produced a CMC shift of only 109 mg/L of sodium laureth sulfate.
  • Example 6 associated with 109 mg of sodium laureth sulfate per every 500 mg of material, or 0.22g of sodium trideceth sulfate per 1.0 g of Aqua SF- 1.
  • the efficiency of a material to associate surfactant is the Delta CMC per mass of the material. A material with a higher efficiency will associate more surfactant and will produce a larger Delta CMC. We believe that this ability to associate with more surfactant is responsible to the differences observed in the rheological behavior between the sodium laureth sulfate and sodium trideceth sulfate surfactant systems, and there differences observed in the ability to suspend particles.

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Abstract

La présente invention concerne des compositions comprenant un polymère acrylique hydrophobiquement modifié, un sodium trideceth sulfate, et une ou plusieurs particules suspendues dans celles-ci ayant une stabilité élevée inattendue. La présente invention concerne en outre des procédés de suspension d’au moins une particule comprenant la combinaison d’au moins une particule présentant un polymère acrylique hydrophobiquement modifié et un sodium trideceth sulfate en vue de produire une composition comprenant un polymère acrylique hydrophobiquement modifié et un sodium trideceth sulfate dans laquelle la au moins une particule est suspendue.
PCT/US2005/005390 2005-02-18 2005-02-18 Compositions comprenant des particules suspendues WO2006091189A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011062805A1 (fr) * 2009-11-23 2011-05-26 Lubrizol Advanced Materials, Inc. Mélanges tensioactif/polymère

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US5540853A (en) * 1994-10-20 1996-07-30 The Procter & Gamble Company Personal treatment compositions and/or cosmetic compositions containing enduring perfume
US6433061B1 (en) * 2000-10-24 2002-08-13 Noveon Ip Holdings Corp. Rheology modifying copolymer composition
US6642198B2 (en) * 1998-12-16 2003-11-04 Johnson & Johnson Consumer Companies, Inc. Clear cleansing detergent systems
US20050020468A1 (en) * 2003-07-22 2005-01-27 Seren Frantz New branched sulfates for use in personal care formulations

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US5387372A (en) * 1993-03-05 1995-02-07 Colgate-Palmolive Company Composition for cleansing body with high foaming action
US6172019B1 (en) * 1999-09-09 2001-01-09 Colgate-Palmolive Company Personal cleanser comprising a phase stable mixture of polymers
US20050201965A1 (en) * 2004-03-11 2005-09-15 The Procter & Gamble Company Personal cleansing compositions

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US5540853A (en) * 1994-10-20 1996-07-30 The Procter & Gamble Company Personal treatment compositions and/or cosmetic compositions containing enduring perfume
US6642198B2 (en) * 1998-12-16 2003-11-04 Johnson & Johnson Consumer Companies, Inc. Clear cleansing detergent systems
US6433061B1 (en) * 2000-10-24 2002-08-13 Noveon Ip Holdings Corp. Rheology modifying copolymer composition
US20050020468A1 (en) * 2003-07-22 2005-01-27 Seren Frantz New branched sulfates for use in personal care formulations

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Title
See also references of EP1853693A4 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011062805A1 (fr) * 2009-11-23 2011-05-26 Lubrizol Advanced Materials, Inc. Mélanges tensioactif/polymère

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