Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q15/00—Anti-perspirants or body deodorants
• • 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
  • A61K8/0216—Solid or semisolid forms
  • A61K8/0229—Sticks
• • 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
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
  • A61K8/28—Zirconium; Compounds thereof
• • 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
  • A61K8/58—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing atoms other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur or phosphorus
  • A61K8/585—Organosilicon compounds
• • 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
  • A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
  • A61K8/86—Polyethers
• • 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
  • A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
  • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
  • A61K2800/41—Particular ingredients further characterized by their size
  • A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns

Definitions

• a problem with antiperspirant/deodorant stick products is obtaining increased thermal stability without giving up the esthetics including "glide”, payoff, color and odour.
• the present invention solves this problem.
• compositions of the invention are anhydrous antiperspirant/deodorant compositions which are suspensoids which can be in the form of sticks, ultradrys, soft solids or creams .
• U.S. 5,156,834 discloses antiperspirant compositions comprising a particulate antiperspirant material, a bulking/suspending agent, a volatile silicone and a nonvolatile emollient.
• US 5,885,559 discloses a solid antiperspirant composition, for application to a human, comprising: a) at least one active antiperspirant material, in an amount sufficient to have antiperspirant effect;
• At least one gelling agent at least one gelling agent, the at least one gelling agent being included in the composition in an amount sufficient to thicken the composition so as to provide a solid composition, the at least one gelling agent including hexanediol-behenyl beeswax, the hexanediol- behenyl beeswax being included in the composition in an amount of 3-25% by weight of the total composition.
• U.S. Patents 5, 069,897; 4,937,069; and 5,019,375 are mentioned in the *559 patent.
• US 5,102,656 - a creamy, heterogeneous anhydrous antiperspirant product and a method for making it.
• the product of the invention comprises essentially a volatile silicone product as a carrier, a gelling agent , and a physiologically acceptable antiperspirant agent.
• U.S. Patent 4,049,792 discloses an antiperspirant composition in the form of a stick which comprises from about 1% to about 20% of a water-insoluble wax, from about 20% to about 50% of an essentially water insoluble, but water-dispersible, liquid emollient, and from about 30% to about 60% of an active aluminum or zirconium astringent antiperspirant salt in the form of finely divided particles, said composition being essentially water- insoluble with the exception of the active particles.
• a stable anhydrous base component comprising: i) from about 5% to about 40% of the cosmetic stick deodorant composition of a solidifying agent selected from the group consisting of high melting point waxes; and low melting point wax fatty alcohols, fatty acid esters and fatty acid amides, having fatty chains of about 8 to about 22 carbon atoms, and mixtures thereof; ii) from about 20% to about 70% of the cosmetic stick deodorant composition of a volatile emollients iii) from about 10% to about 50% of the cosmetic stick deodorant composition of non-volatile emollients;
• c) from about 0.05% to about 10% of the cosmetic stick deodorant composition of a solubilizing agent having a hydrophilic-lipophilic balance (HLB) of greater than about 10.
• HLB hydrophilic-lipophilic balance
• US 5,968, 489 discloses antiperspirant compositions which comprise from about 0.1 to about 99.9% by weight of solubilized or solid antiperspirant active and from about 0.1 to about 99.9% by weight of a carrier which comprises 1, 3-hexanediol , preferably in combination with a volatile silicone liquid and dimethiconol as a coupling agent.
• US 5,972,319 discloses an antiperspirant stick composition which comprises 17-40% gelling agent; 30-50% solvent, 10-30% antiperspirant active, 10-27% non-volatile emollient, and 1- 15% surfactant.
• U.S. 5,976,514 discloses topical compositions which comprise from about 0.01% to about 60% by weight of an antiperspirant and/or deodorant active; from about 1% to about 60% by weight of a volatile, nonpolar hydrocarbon liquid having a solubility parameter of less than about 7.5 (cal/cm 3 ) °' 5 and a vapour pressure as measured at 25°C. of from about 0.1 mmHg to about 6.0 mmHg; and from about 1% to about 60% by weight of a skin irritation-mitigating material having a vapour pressure equal to or less than that of the volatile, nonpolar hydrocarbon liquid, preferably a silicone- containing liquid; wherein the weight ratio of the volatile. nonpolar hydrocarbon liquid to the mitigating material is from about 5:1 to about 1:50; and
• WO 9926597 discloses at example 2 an antiperspirant stick composition
• an antiperspirant stick composition comprising: 24% AZAG; 1% Estol E04DS; 4% Castor wax; 14% Lorol C18 deo; 3.2% talc; 1% perfume; 35.3% volatile DC345; and 17.5% Borage Seed Oil.
• the invention relates to an antiperspirant/deodorant stick compositions with increased thermal stability; and esthetics including "glide", payoff, color, and odour, and which use less fatty alcohols than conventional deodorant sticks.
• the compositions of the invention comprise a high melting point wax.
• antiperspirant/deodorant stick compositions which comprise:
• the invention also relates to a method of controlling body odour and perspiration by contacting human skin with a composition of the invention.
• % means weight % unless otherwise indicated.
• the invention relates to antiperspirant/deodorant stick compositions which comprise:
• the invention also relates to a method of controlling body odour and perspiration by contacting human skin with a composition of the invention.
• the high melting point wax is a structurant which provides thermal stability to the stick compositions of the invention without reducing the esthetics mentioned above.
• the wax allows for the use of less fatty alcohols in the compositions of the invention than are used in conventional stick products.
• the high melting point wax is present in compositions at from about 0.1 to about 10 wt . % .
• the melting point of the wax can range from about 150-215°F, or about 65 to about
• the high melting point wax may be present in compositions at from about 0.05 to about 10 wt . % .
• the high melting point wax may be any wax which melts from about 65 to about 104°C, or from about 65 to about 101°C, as noted above.
• the high melting point wax is selected from the group consisting of beeswax, spermaceti, carnauba wax, bayberry, candedilla, montan wax, ozokerite, ceresin, paraffin and synthetic wax.
• a very high melting point (melting point is greater than about 80°C such as about 80 to about 104°C) wax is especially preferred in compositions of the invention.
• Microcrystalline wax CFA trade name which is a very high melting point wax (melting point is about 80 to 104 °C) is preferred.
• the microcrystalline wax named MULTIWAX 180M from WITCO is used in compositions below.
• Trihydroxystearin is also a preferred very high melting point wax.
• the very high melting point wax can be present in compositions of the invention at from about 0.1 to about 10 w . % .
• compositions of the invention also contain a low melting point wax which is described just below.
• Low Melting Point Wax Low Melting Point Wax
• Low melting point waxes have a melting point range of about 25 degrees C to about 65 degrees C, more preferably about 37 degrees C to about 65 degrees C.
• Non- limiting examples of low melting point waxes which can be included in the compositions of the invention are castor wax, stearyl alcohol and most preferably SF 1642.
• SF 1642 is C30-C45 alkyl dimethicone and is available from General Electric, Connecticut.
• SF 1642 is in between a low melting point wax and a high melting point wax:
• each R is individually an alkyl of C30 or greater and
• n is about 25.
• SF 1632 which is cetearyl methicone is available from General Electric and can also be used in compositions of the invention and it has the chemical structure:
• x + y is about 1 to about 100, preferably about 4 ;
• R 1 is C16-C18 linear alkyl
• R 2 is C16-C18 branched alkyl.
• It has a melting point about 25 to about 35 degrees C.
• the low melting point wax serves to modify rheology for easier glide-on and the high melting point wax serves to give to the resulting composition improved thermal stability ( up tol22.5°F, and higher) ; and serves to give the resulting composition improved structurant properties.
• the emollient is present from about 5 to about 40% in compositions of the invention. It is a non-volatile, non- toxic organic or silicone based emollient.
• the emollient can be a mixture of organic and silicone based emollients. PPG- 14 butyl ether is preferred.
• emollients suitable for use in the compositions of the present invention include a nonvolatile silicone oil, a high molecular weight polyol, an oil -surfactant , an aromatic ester, an aliphatic ester, and similar organic compound.
• the antiperspirant active in the compositions of the invention is present at from about 15 to about 50% and is a particulate material selected from the group consisting of aluminum zirconium complexes, aluminum chlorohydrates, aluminum chlorohydroxide and mixtures thereof .
• Aluminum zirconium trichloro hydrex-Gly is preferred.
• the present compositions contain from about 15% to about 50% by weight of a particulate antiperspirant material . These weight percentages are calculated on an anhydrous metal salt basis (exclusive of glycine, the salts of glycine, or other complexing agents) .
• the particulate antiperspirant material preferably has particle sizes ranging from about 1 to about 100 microns, more preferably from about 1 to about 50 microns. They may be in impalpable or microscopic in form and preferably have a high bulk density (e.g. greater than about 0.7 g/cm 3 ) . Such materials include, for example, many aluminum or zirconium astringent salts or complexes and are well known in the art.
• Any aluminum astringent antiperspirant salt or aluminum and /or zirconium astringent complex in particulate form can be employed herein.
• Salts useful as astringent antiperspirant salts or as components of astringent complexes include aluminum halides, aluminum hydroxyhalides, zirconyl oxy halides, zirconyl hydroxyhalides and mixtures of these salt materials .
• Aluminum salts of this type include aluminum chloride and the aluminum hydroxy halides having the general formula
• Al 2 (OH) x Q y XH 2 0 where Q is chlorine, bromine, or iodine; x is from about 2 to about 5, and x+y is about 6 and x and y do not need to be integers and where X is from about 1 to about 6.
• Aluminum salts of this type can be prepared in the manner described more fully in USP 3,887,692 to Gilman, USP 3,904,741 Jones and Rubino, both of which are herein incorporated by reference.
• zirconium salts which are useful in the present invention include both zirconium oxy salts and zirconium hydroxyl salts, also referred to as zirconyl hydroxy salts. These compounds may be represented by the following general empirical formula :
• z may vary from about 0.9 to about 2 and need not be an integer
• n is the valence of B
• 2-nz is greater than or equal to
• B may be selected from the group consisting of halides, nitrate, sulfamate, sulfate, and mixtures thereof.
• zirconium and aluminum compounds are exemplified in the specification, it will be understood that other metals such as the Group IV B metals, including hafnium could be used in the present invention.
• the above formula is greatly simplified and is intended to represent and include compounds having coordinated and/or bound water in various quantities as well as polymers, mixtures and complexes of the above.
• the zirconium hydroxy salts actually represent a range of compounds having various amounts of the hydroxy group, varying from about 1.1 to only slightly greater than 0 groups per molecule.
• ZAG complexes are chemically analyzable for the presence of aluminum, activated ZAG compounds and chlorine.
• ZAG complexes useful herein are identified by the specification of both the molar ratio of aluminum to zirconium (the Al : Zr ratio) and the molar ratio of total metal to chlorine (metal :C1)
• ZAG complexes useful herein have an Al : Zr ratio of from about 1.67 to about 12.5 and a metal :C1 ratio of about 0.73 to about 1.93.
• Activated ZAG compounds may be employed as the particulate antiperspirant active in the compositions of the present invention.
• Activated ZAG compounds may be prepared by heating an aqueous solution containing an aluminum chlorhydroxide component and mixing it with a zirconium hydroxy chloride component .
• compositions of the invention may further comprise synthetic waxes.
• Synthetic waxes provide compositions of the invention with properties such as thermal stability, improved structuring properties, less syneresis, and they allow for the use of less overall wax in the composition and thereby provide for compositions which leave less waxy residue upon application.
• Synthetic waxes that are particularly preferred are mixtures of long chain wax esters, glycerides, and fatty acids. Often synthetic waxes that are particularly preferred can have the following advantages over natural waxes: provide stable uniform properties in emulsion sticks, provide intrinsic structural attributes that allow for high powder formulations, and provide structural integrity to solid emollient preparations without compromising the liquid feel of their payoff.
• Non-limiting examples of synthetic waxes which can be used in compositions of the invention are as follows: C18-C36 saturated fatty acid waxes; ethylene glycol diesters of C18- C36 saturated fatty acid waxes; triglycerides of C18-C36 saturated fatty acid waxes; the triglyceride of behenic acid (which is called glyceryl tribehenate) ; a partial calcium salt of triglycerides of C18-C36 saturated fatty acid waxes; and synthetic bees wax.
• Synthetic waxes are commercially available from Croda under the following tradenames :
• a most preferred synthetic wax is SYNCROWAX HGL-C.
• compositions of the invention may further comprise rheological additives which add thixotropic body or control of syneresis in the emulsion stick compositions of the present invention.
• rheological additives include trhydroxystearin, also known as tris-12- hydroxystearate; a modified glycerol tris- 12 -hydroxystearate such as Thixatrol ST available from Rheox Inc., sodium stearate, aluminum stearate, stearamide MEA, sorbitol acetal, and fumed silica, and mixtures thereof; Trihydoxystearin and fumed silicas are preferred rheological additives in compositions of the invention.
• Trihydoxystearin can be obtained as THIXCIN R and THIXCIN GR from Elementis Specialties of Belgium. It is also available as FLOWTONE from Southern Clay Products. THIXCIN R comes as a finely divided white powder with a mp of about 86°C.
• THIXCIN R is an organic derivative of castor oil.
• THIXCIN GR is an inorganically modified derivative of THIXCIN R.
• Inorganic thickeners such as talc and fumed silica may also be included in the compositions of the invention.
• Rheological additives are included in compositions of the invention at about 0.1% to about 2.0%, more preferably at about 0.2% to about 1.5%.
• compositions of the invention may also comprise elastomers, and especially silicone elastomers.
• silicone elastomers for use in the invention are polydiorganosiloxanes, preferably derived from suitable combinations of R 3 SiO 0 . 5 units and R 2 SiO units where each R independently represents an alkyl, alkenyl (e.g. vinyl), alkaryl, aralkyl, or aryl (e.g. phenyl) group. R is most preferably methyl .
• the preferred crosslinked silicone elastomers of the invention are cross-linked polydimethyl siloxanes (which have the CTFA designation dimethicone) , optionally having end groups such as hydroxyl or methyl .
• One preferred elastomer of the invention is DC 2-9040.
• the cross linker used in the DC 2-9040 is an alpha, omega aliphatic diene of the following structure:
• Another preferred elastomer of the invention is DC 3-2365.
• silicone-urethane copolymer The tradename for the silicone-urethane copolymer is Polyderm PPI-SI-100. The supplier is Alzo Incorporated, Matawan, New Jersey.
• elastomers are the following: a Dow Corning crosslinked, ethoxylated silicone gels branded as DC 9010 or a combination of such gels.
• the degree of crosslinking of the silicone elastomers is suitably from about 0.05% to about 35%, preferably being in the range of about 0.15% to about 7%, e.g. from about 0.2 to about 2%.
• Suitable emulsion polymerized cross-linked silicone elastomers are commercially available or can be readily made using conventional techniques well known to those skilled in the art .
• elastomers are the following: a Dow Corning crosslinked, ethoxylated silicone gels branded as DC 9010 or a combination of such gels.
• silicone polymers for use in the invention are polydiorganosiloxanes and polymonoorganosiloxanes .
• the polydisorganosiloxanes are preferably derived from suitable combinations of R 3 SiO 0 . 5 units and R 2 SiO units.
• the polymonoorganosiloxanes are preferably derived from R ⁇ SiO ⁇ . 5 .
• Each R independently represents an alkyl, alkenyl (e.g. vinyl), alkaryl, aralkyl, or aryl (e.g. phenyl) group.
• R is most preferably methyl .
• the degree of cross-linking of silicone polymers affects their performance in the compositions of the invention.
• the preferred silicone polymers of the invention are cross- linked polydimethyl siloxanes and polymonomethyl siloxanes optionally having end groups such as hydroxyl or methyl.
• Suitable emulsion polymerized cross-linked silicone polymers are commercially available or can be readily made using conventional techniques well known to those skilled in the art .
• the most preferred silicone elastomer is cyclomethicone (and) dimethicone crosspolymer . It is described above and is sold under the tradename Dow Corning 9040. It is a mixture of a high molecular weight silicone elastomer (dimethicone crosspolymer) in cyclomethicone . Its physical form is as a paste.
• Elastomers can be included in compositions of the invention at about 0.1 to about 20%.
• Elastomers impart a silky feel to the compositions of the invention.
• fragrances can be incorporated into the anhydrous, topically-effective composition in an amount of from 0% to about 5% based on the total weight of the composition.
• the composition of the present invention when applied to skin, therefore fixes a substantive fragrance film on the skin that resists moisture, but that can be removed by washing.
• anhydrous composition of the present invention includes, but are not limited to, drying agents, like talc or DRY FLO (aluminum starch octenylsuccinate) ; preservatives; and dyes. Generally, such optional ingredients are present in a composition of the present invention in an amount of about 10% or less by weight. In addition, although the necessity of including an organoclay is virtually eliminated by the use of the new and improved suspending agent, an organoclay and be included in a composition of the present invention as an additional suspending agent in an amount of upto 20% by weight of the composition.
• An organoclay is especially helpful as an anti-caking agent to maintain a particulate topically-effective compound homogeneously dispersed throughout the composition.
• An exemplary organoclay is a quaternized three-layer clay exfoliated with a polar solvent, like a quaternized montmorillonite clay exfoliated with propylene carbonate.
• compositions of the invention can fall into the following weight ranges:
• compositions of the invention which further comprise a low melting point wax can have components in the following weight % ranges
• compositions of the invention which further comprise an elastomer can have components in the following weight % ranges
• compositions of the invention which further comprise a low melting point wax and an elastomer can have components in the following weight % ranges
• compositions of the invention may be prepared as described herein, and may be prepared by methods which are known in the art or which are analogous to methods which are known in the art.
• Specific compositions of the invention which have been made have the following formulations:
• compositions of the invention can be present in compositions of the invention at from about 1 to about 5%.
• Compositions of the invention are made using processes known in the art, or by using processes which are analogous to those known in the art .
• compositions of the invention can be prepared by methods which are known in the art or are analogous to methods which are known in the art .
• the invention also relates to a method for treating or preventing perspiration or body odor which comprises contacting human skin with a composition of the invention.
• compositions of the invention provide increased thermal stability without giving up the esthetics including "glide”, payoff, color and odor.
• compositions of the invention provide effective antiperspirant activity and odor control.
• Compositions of the invention have less grittiness, are easier to wash off, require less time for dry-down, feel drier upon application, are easier to spread, and have less stickiness.
• compositions of the invention have excellent thermal stability at temperatures as high as about 115 to about 120°F.
• the compositions of the invention which comprise an elastomer have a "silky" feel upon application.
• the compositions of the invention which comprise triglycerides have a lotion-like feel upon application, while the compositions of the invention which lack triglycerides also have a very good powdery or talc-like feel upon application.
• Trained panel assessments of the compositions of the invention could be carried out to demonstrate their advantageous properties.
• the trained panel assessments could include human sensory testing. The advantageous properties of the compositions of the invention have been described above .

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• 2000
  • 2000-01-20 EP EP00903604A patent/EP1146848A1/de not_active Withdrawn
  • 2000-01-20 AU AU25427/00A patent/AU2542700A/en not_active Abandoned
  • 2000-01-20 WO PCT/EP2000/000456 patent/WO2000044339A1/en not_active Application Discontinuation
  • 2000-01-20 BR BR0007758-5A patent/BR0007758A/pt not_active IP Right Cessation
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