WO2000057846A1 - Low voc hair spray compositions having enhanced styling benefits - Google Patents

Low voc hair spray compositions having enhanced styling benefits Download PDF

Info

Publication number
WO2000057846A1
WO2000057846A1 PCT/EP2000/001945 EP0001945W WO0057846A1 WO 2000057846 A1 WO2000057846 A1 WO 2000057846A1 EP 0001945 W EP0001945 W EP 0001945W WO 0057846 A1 WO0057846 A1 WO 0057846A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
composition
sodium
composition according
compositions
Prior art date
Application number
PCT/EP2000/001945
Other languages
French (fr)
Inventor
Natalia Nekludoff
Diane Marie Dabkowski
Tirucherai Varahan Vasudevan
Jennifer Marie Seper
Original Assignee
Unilever Plc
Unilever Nv
Hindustan Lever Limited
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.)
Filing date
Publication date
Priority claimed from US09/307,060 external-priority patent/US6395264B1/en
Application filed by Unilever Plc, Unilever Nv, Hindustan Lever Limited filed Critical Unilever Plc
Priority to AU31644/00A priority Critical patent/AU3164400A/en
Priority to JP2000607597A priority patent/JP2002540132A/en
Publication of WO2000057846A1 publication Critical patent/WO2000057846A1/en

Links

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00Preparations for care of the hair
    • A61Q5/06Preparations for styling the hair, e.g. by temporary shaping or colouring
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/02Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04Dispersions; Emulsions
    • A61K8/046Aerosols; Foams
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/20Halogens; Compounds thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/36Carboxylic acids; Salts or anhydrides thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/36Carboxylic acids; Salts or anhydrides thereof
    • A61K8/368Carboxylic acids; Salts or anhydrides thereof with carboxyl groups directly bound to carbon atoms of aromatic rings
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/40Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
    • A61K8/44Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/46Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
    • A61K8/463Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfuric acid derivatives, e.g. sodium lauryl sulfate
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/46Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
    • A61K8/466Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfonic acid derivatives; Salts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/58Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing atoms other than carbon, hydrogen, halogen, oxygen, nitrogen, sulfur or phosphorus
    • A61K8/585Organosilicon compounds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/81Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A61K8/8141Compositions 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
    • A61K8/8147Homopolymers or copolymers of acids; Metal or ammonium salts thereof, e.g. crotonic acid, (meth)acrylic acid; Compositions of derivatives of such polymers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/81Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A61K8/8141Compositions 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
    • A61K8/8152Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/81Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A61K8/8141Compositions 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
    • A61K8/8158Homopolymers or copolymers of amides or imides, e.g. (meth) acrylamide; Compositions of derivatives of such polymers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/84Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
    • A61K8/89Polysiloxanes
    • A61K8/891Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone
    • A61K8/894Polysiloxanes saturated, e.g. dimethicone, phenyl trimethicone, C24-C28 methicone or stearyl dimethicone modified by a polyoxyalkylene group, e.g. cetyl dimethicone copolyol

Definitions

  • VOC volatile organic compounds
  • This invention relates to 55% VOC (and lower VOC) hair spray compositions that provide hold and feel properties similar to or better than that of the current 80% VOC hair sprays.
  • the performance characteristics of hair sprays suffer as the VOC level is reduced from 80% to 55% in the product. Therefore, preparing 55% VOC (and lower VOC) hairspray products which have the same or better performance characteristics as 80% VOC hairspray products would be desirable .
  • U.S. Patent 5,374,420 discloses a hairspray/ hair setting composition comprising: a) 0.001-20% of a neutralizable hair fixative resin, b) 0.001-8% of a base, and c) 0.001-5% of an acid surfactant precursor in an alcohol or aqueous/alcohol carrier.
  • Patent 5,164,177 discloses an aerosol or non-aerosol hair styling aid or mousse composition, and method, including a water-soluble or water-dispersable fixative resin in an amount of about 2% to about 40%; an electrolyte; water in an amount of about 30% to about 90%; alcohol in an amount of 0% to about 30%, and with aerosol compositions, a liquefied propellant gas such as dimethyl ether, in an amount of about 5% to about 50%.
  • a water-soluble or water-dispersable fixative resin in an amount of about 2% to about 40%
  • an electrolyte water in an amount of about 30% to about 90%
  • alcohol in an amount of 0% to about 30%
  • aerosol compositions a liquefied propellant gas such as dimethyl ether
  • the performance characteristics of hair sprays generally suffer as the VOC level is reduced from 80% to 55% in the product.
  • the purpose of this invention is to maintain and improve the performance characteristics of the 80% VOC system in the 55% VOC product.
  • the deterioration of the spray characteristics of a hydroalcoholic solution containing the hair spray resin which occurred as the VOC content was reduced from 80 to 55% was offset by incorporation of a unique combination of hydrocarbon based surfactants and an organic salt as described below. The same benefit can be obtained in aqueous systems.
  • the invention relates to an aqueous or hydroalcoholic, non- aerosol or aerosol hair spray composition containing a water soluble or dispersable fixative polymer in an amount from about 1% to about 40 % by weight of the composition, a neutralizing agent in an amount from about 0.1 to about 10 wt %, a hydrocarbon based surfactant in an amount from about 0.01% to about 5% by weight, a salt from about 0.01% to about 10% by weight, alcohol from about 0% to about 90%, more preferably, from about 10% to about 90% by weight, a volatile ester from about 0 to 90% by weight, more preferably about 10% to about 90% by weight; a volatile ketone from about 0 to 90% by weight, more preferably about 10% to about 90% by weight; in the case of aerosols from about 5 to about 60% by weight of liquidfied propellant gas, and water from about 10% to about 98% by weight of the composition.
  • compositions of the invention can be aqueous or hydroalcoholic.
  • % means weight % of the total composition unless otherwise indicated.
  • m N/m means milli
  • Dynes/cm is the same as milli Newtons/meter .
  • compositions of the invention are either known or can be prepared according to known methods.
  • compositions of the invention can be prepared either by known methods or by methods analogous to known methods.
  • the deterioration of the spray characteristics of a hydroalcoholic solution containing the hair spray resin which occurred as the VOC content was reduced from 80 to 55% was offset by incorporation of a unique combination of hydrocarbon based surfactants and an organic salt. The same benefit can be obtained in aqueous systems.
  • the hydrocarbon surfactant may be selected from the group consisting of: sodium dioctyl sulfo succinate, sodium dodecyl sulfate, cocoamidopropyl betaine, and sodium laureth sulfate, and the like.
  • any hydrocarbon based surfactant suitable for use in hairspray compositions may be employed in the compositions of the invention.
  • anionic surfactants are sodium dinonyl sulfo succinate, sodium decyl sulfate, sodium alpha olefin sulfonate and the like.
  • Nonionic and cationic surfactants may also be employed.
  • the organic salt is an organic salt which can be used in hairspray compositions and may be selected, for example, from the group consisting of: sodium benzoate, magnesium acetate, sodium acetate, sodium citrate, potassium acetate, sodium salicylate, sodium tartrate, sodium phenylsalicylate, sodium oxalate, sodium adipate, sodium butyrate, sodium caprate, sodium caproate, sodium maleate, sodium malate, sodium malonate, sodium phthalate, sodium propionate, sodium pyruvate, sodium fumarate.
  • the neutralizing agent may be selected, for example, from the group consisting of: 2- amino , 2 -methyl, 1- propanol , 2 -amino, 2 -methyl , 1,3- propanediol, dimethyl stearamine, histidine, tris (hydroxymethyl) aminomethane, triethanol amine, sodium hydroxide, and potassium hydroxide.
  • the soluble or dispersible fixative polymer may be selected from the group consisting of: vinyl and acrylic based resins and polyurethane resins.
  • Specific resins include, but are not limited to, acrylamide copolymers, acrylate copolymers, which may or may not be modified by introduction of a quaternary ammonium group.
  • Other fixative resins are described in copending U.S. Patent Application Serial No. 08/717,113 to Bhatt et al , filed September 20,1996.
  • the use of resins or polymers in hairsprays is known as summarized in Grollier et al U.S. Patent No. 4,445,521.
  • the molecular weight of the polymer has a preferred range of about 10,000 to about 1 million Daltons, a more preferred range is about 20,000 to about 500,000 Daltons and the most preferred range is about 30,000 to about 300,000.
  • the inorganic salt may be selected, for example, from the group consisting of chloride, sulfate, and nitrate salts of sodium, magnesium and ammonium.
  • the alcohol if present, may be selected from the group consisting of: ethanol and isopropanol .
  • volatile ester if present, may be selected, for example, from the group methyl acetate, ethyl acetate, propyl acetate, butyl acetate.
  • volatile ketones if present, may be, for example, acetone.
  • the propellant if present, may be selected from the group consisting of: trichlorofluoromethane , dichlorodiflouromethane , dichlorotetraflouromethane, dimethyl ether, propane, n- butane, isobutane and mixtures thereof, and like propellants .
  • compositions of the present invention may also include silicone conditioning agents such as cyclomethicone, dimethicone copolyol .
  • preservatives such as benzyl alcohol, methyl paraben, propyl paraben, or imidazolidinylurea
  • cationic conditioners such as cetyl ammonium chloride, stearyl dimethyl benzyl ammonium chloride
  • coloring agents such as chelating agents, such aminetetraacetic acid
  • plasticizers such as glycols, phthalate esters and glycerines, silicones, emollients, lubricants and penetrants such as various lanolin compounds, protein hydrosylates, and other protein derivatives ethylene adducts and polyoxyethylene cholesterol.
  • the invention relates to an aqueous or hydroalcoholic, non- aerosol or aerosol hair spray composition containing a water soluble or dispersable fixative polymer in an amount from about 1% to about 40 % by weight of the composition, a neutralizing agent in an amount from about 0.1 to about 10 wt %, a hydrocarbon based surfactant in an amount from about 0.01% to about 5% by weight, a salt from about 0.01% to about 10% by weight, alcohol from about 0% to about 90%, more preferably 10% to about 90% by weight, a volatile ester from 0 to 90% by weight, more preferably about 10% to about 90% by weight, a volatile ketone from about 0% to about 90%, more preferably, from about 10% to about 90% by weight and water from about 10% to about 98% by weight of the composition. Additionally, in the case of aerosols, a liquefied propellant gas is present from about 5% to 60% by weight .
  • compositions of the invention can be aqueous or hydroalcoholic.
  • Preferred ranges of a water soluble or dispersible fixative polymer are about 1 to about 40% by weight of the composition, more preferably about 2 to about 20%, and most preferably about 3 to about 10%.
  • Preferred ranges of a neutralizing agent are about 0.1 to about 10% by weight of the composition, more preferably about 0.25% to about 5%, and most preferably about 0.5% to about 2.5%.
  • Preferred ranges of a hydrocarbon based surfactant are about 0.01% to about 5% by weight of the composition, more preferably about 0.05% to about 2.5%, and most preferably about 0.1% to about 1.0%.
  • Preferred ranges of the salt are about 0.01 to about 10% by weight of the composition, more preferably about 0.05% to about 5%, and most preferably about 0.1% to about 1%.
  • silicone conditioning agents are 0.001 to about 10% by weight of the composition, preferably from 0.01 to about 5%.
  • compositions of the invention in which the polymer is a ethyl acrylate, methyl methacrylate and methacrylic acid copolymer in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer is a terpolymer of ethyl acrylate, t-butyl acrylate and methacrylic acid in the molecular weight range about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons.
  • compositions of the invention in which the polymer is a octyl acrylamide, acrylates and butylaminoethyl methacrylate copolymer in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer is a methacrylic acid, n- butyl acrylate and methyl methacrylate copolymer in the molecular weight range about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons.
  • compositions of the invention in which the polymer is a methacrylic acid, n-butyl acrylate and ethyl methacrylate copolymer in the molecular weight range about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer is a butyl acrylate, methyl methacrylate, hydroxyethyl methacrylate and methacrylic acid copolymer in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons.
  • compositions of the invention in which the polymer is a vinyl acetate, crotonates and vinyl neodecanoate copolymer in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons.
  • compositions of the invention in which the polymer is a butyl ester of vinyl methyl ether and maleic anhydride copolymer in the molecular weight range about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer is an ethyl ester of vinyl methyl ether and maleic anhydride copolymer in the molecular weight range about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons.
  • compositions of the invention in which the polymer consists of polystyrene sulfonate monomers in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer consists of 1 -vinyl -2- pyrrolidone monomers in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer is a vinyl acetate and vinylpyrrolidone copolymer in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo
  • compositions of the invention in which the polymer is a vinylcaprolactam homopolymer in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons.
  • compositions of the invention in which the polymer is a quaternary ammonium polymer formed by the reaction of diethyl sulfate and a copolymer of vinyl pyrrolidone and dimethyl aminoethylmethacrylate in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons.
  • compositions of the invention in which the polymer is a modified or an unmodified polyurethane as described in U.S. Patent 6,007,793 issued to Bhatt et al .
  • compositions of the invention in which the hydrocarbon surfactant is an anionic surfactant.
  • the anionic surfactant is sodium dioctyl sulfosuccinate or its acid form.
  • compositions of the invention in which the anionic surfactant is magnesium dioctyl sulfosuccinate or its acid form.
  • compositions of the invention in which the anionic surfactant is ammonium dioctyl sulfosuccinate or its acid form.
  • compositions of the invention in which the anionic surfactant is sodium dodecyl sulfate or its acid form.
  • compositions of the invention in which the anionic surfactant is magnesium dodecyl sulfate or its acid form. Also preferred are compositions of the invention in which the anionic surfactant is ammonium dodecyl sulfate or its acid form. Also preferred are compositions of the invention in which the anionic surfactant is sodium laureth sulfate or its acid form.
  • compositions of the invention in which the anionic surfactant is magnesium laureth sulfate or its acid form. Also preferred are compositions of the invention in which the anionic surfactant is ammonium laureth sulfate or its acid form.
  • compositions of the invention in which the hydrocarbon based surfactant is a zwitterionic surfactant. Also preferred are compositions of the invention in which the zwitterionic surfactant is cocoamidopropyl betaine .
  • compositions of the invention in which the salt is an organic salt. Also preferred are compositions of the invention in which the organic salt is sodium benzoate. Also preferred are compositions of the invention in which the organic salt is magnesium benzoate. Also preferred are compositions of the invention in which the organic salt is sodium acetate. Also preferred are compositions of the invention in which the organic salt is magnesium acetate.
  • compositions of the invention in which the salt is an inorganic salt. Also preferred are compositions of the invention in which the inorganic salt is sodium chloride. Also preferred are compositions of the invention in which the inorganic salt is magnesium chloride.
  • compositions of the invention in which the alcohol is ethanol are also preferred.
  • compositions of the invention in which the alcohol is isopropanol .
  • compositions of the invention further including silicone based surfactants in an amount from 0.01% to 5% by weight of the composition.
  • silicone based surfactant is dimethicone copolyol .
  • compositions of the invention in which the neutralizing agent is 2 -amino, 2 -methyl , 1-propanol . Also preferred are compositions of the invention in which the neutralizing agent is dimethyl stearamine . Also preferred are compositions of the invention in which the neutralizing agent is sodium hydroxide. Also preferred are compositions of the invention in which the neutralizing agent is potassium hydroxide.
  • aerosol compositions of the invention in which the liquefied propellant gas is dimethyl ether. Also preferred are aerosol compositions of the invention in which the liquified propellant gas is a mixture of propane and butane as well as mixtures of dimethyl ether, propane and butane .
  • Hair spray compositions of the invention can be in the form of hair sprays, spritzes, mousses etc.
  • the invention also relate to a method of treating or styling hair which comprises contacting said hair with the hairspray compositions of the invention. After hair spray compositions are applied to the hair, said hair can be styled, etc in various ways which are known in the art.
  • Amphomer LV-71 Octylacrylamide, acrylates and butyl aminoethyl methacrylate copolymer with a molecular weight range of 120 to 165 Kilo Daltons from National Starch and Chemicals Co. of NJ, USA.
  • HC 7801 Methacrylic acid, n-butyl acrylate and ethyl methacrylate copolymer with a molecular weight range of 50 to 100 kilo Daltons.
  • Resyn 28-2930 Vinyl acetate, crotonates, vinyl neodecanoate copolymer with a molecular weight range of 70 to 110 kilo Daltons from National Starch and Chemicals Co. of NJ, USA..
  • Dimethicone copolyol Silwet L-720 from Witco Corp., WV, USA
  • Cyclomethicone DC 245 from Dow Corning, MI, USA Hydrocarbon surfactants
  • Cocoamidopropyl betaine Tegobetaine from GoldSchmidt Industries
  • Dynamic Surface Tension A test liquid in a typical surface tension experiment is static and any surface active material would be in equilibrium. In reality, spraying and subsequent wet out on hair are both dynamic processes and are affected by the surface tension of the formulation. Any materials that are surface active need time to migrate to and organize themselves at the air- liquid interface in order to effectively lower the surface tension. Any difference in perceived static versus dynamic surface tension could result in less than optimum performance. As described below, the faster the surface tension of a composition equilibrates, the better are its hairspray characteristics.
  • the dynamic surface tension experiment is typically conducted using a maximum bubble pressure method. This method is based on recording the pressure required to form bubbles at a given rate/ frequency in a test liquid. The surface tension is then calculated based on the measured pressure. The results are typically expressed in terms of dynamic surface tension against the surface age. Surface age is the time elapsed between the bubble formation and detachment of the bubble.
  • a surface age of about 10 msec is the time frame of interest for drop formation in spray process.
  • the liquids used in hair spray applications generally reach equilibrium within 1000 msec (surface age of 1 sec.) .
  • the difference between the surface tension obtained at very short time scales (ex: 10 msec) and the equilibrium surface tension (obtained for example at 1000 sec or higher) should be as small as possible.
  • the difference in surface tension obtained at a surface age of about 10 msec and that obtained at a surface age of about 1500 msec ( ⁇ 10 - 1500) was chosen as the criterion for comparing the performance of different hair spray solutions.
  • An absolute surface tension value at about 11 msec was chosen as a criterion for comparing the performance of different hair spray solutions.
  • compositions 1 through 23 of the invention were made, while compositions 24 through 45 could be made by processes described herein and by processes known to those skilled in the art.
  • test solutions of a certain number refer to the test solutions in the tables just above.
  • test solution #1 is the first solution in the above table 1
  • test solution #16 is the sixteenth solution which appears in table 2.
  • a combination of an organic salt (sodium benzoate) and a hydrocarbon surfactant is required to bring the surface tension difference of the 55% VOC test solution down to that of 80% VOC commercial product .
  • a Test solution in which only a hydrocarbon based surfactant is used, a Test solution in which a combination of silicone and hydrocarbon surfactants is present, or test solutions in which a combination of an organic salt and a silicone based surfactant is present do not bring the surface tension difference to that of the 80% VOC product.
  • Sequential monadic testing of consumers with a composition of the invention shows that it performs as well as the 80% VOC commercial product.

Abstract

An aqueous or hydroalcoholic, aerosol or non-aerosol hair styling aid or mousse composition containing a water soluble or dispersable fixative polymer in an amount from 1 % to 40 % by weight of the composition, a neutralizing agent in an amount from 0.1 to 10 wt.%, a hydrocarbon based surfactant in an amount from 0.01 % to 5 % by weight, a salt from 0.01 % to 10 % by weight, alcohol from 10 % to 90 % by weight, a volatile ester from 0 to 90 % by weight, a volatile ketone from 0 to 90 % by weight and water from 10 % to 98 % by weight of the composition. Additionally, aerosol compositions contain a liquefied propellant gas from 5 % to 60 % by weight of the composition.

Description

LOW VOC HAIR SPRAY COMPOSITIONS HAVING ENHANCED STYLING
BENEFITS
BACKGROUND OF THE INVENTION
Regulations and laws designed to protect the environment, are leading to the production of hair care spray products which have lower volatile organic compounds (VOC) content than the current commercial products.
This invention relates to 55% VOC (and lower VOC) hair spray compositions that provide hold and feel properties similar to or better than that of the current 80% VOC hair sprays. The performance characteristics of hair sprays suffer as the VOC level is reduced from 80% to 55% in the product. Therefore, preparing 55% VOC (and lower VOC) hairspray products which have the same or better performance characteristics as 80% VOC hairspray products would be desirable .
U.S. patents in this area of technology are as follows:
U.S. Patent 5,374,420 discloses a hairspray/ hair setting composition comprising: a) 0.001-20% of a neutralizable hair fixative resin, b) 0.001-8% of a base, and c) 0.001-5% of an acid surfactant precursor in an alcohol or aqueous/alcohol carrier. U.S. Patent 5,164,177 discloses an aerosol or non-aerosol hair styling aid or mousse composition, and method, including a water-soluble or water-dispersable fixative resin in an amount of about 2% to about 40%; an electrolyte; water in an amount of about 30% to about 90%; alcohol in an amount of 0% to about 30%, and with aerosol compositions, a liquefied propellant gas such as dimethyl ether, in an amount of about 5% to about 50%.
SUMMARY OF THE INVENTION
As noted above, the performance characteristics of hair sprays generally suffer as the VOC level is reduced from 80% to 55% in the product. The purpose of this invention is to maintain and improve the performance characteristics of the 80% VOC system in the 55% VOC product.
In the present invention, the deterioration of the spray characteristics of a hydroalcoholic solution containing the hair spray resin which occurred as the VOC content was reduced from 80 to 55% was offset by incorporation of a unique combination of hydrocarbon based surfactants and an organic salt as described below. The same benefit can be obtained in aqueous systems.
The invention relates to an aqueous or hydroalcoholic, non- aerosol or aerosol hair spray composition containing a water soluble or dispersable fixative polymer in an amount from about 1% to about 40 % by weight of the composition, a neutralizing agent in an amount from about 0.1 to about 10 wt %, a hydrocarbon based surfactant in an amount from about 0.01% to about 5% by weight, a salt from about 0.01% to about 10% by weight, alcohol from about 0% to about 90%, more preferably, from about 10% to about 90% by weight, a volatile ester from about 0 to 90% by weight, more preferably about 10% to about 90% by weight; a volatile ketone from about 0 to 90% by weight, more preferably about 10% to about 90% by weight; in the case of aerosols from about 5 to about 60% by weight of liquidfied propellant gas, and water from about 10% to about 98% by weight of the composition.
As can be seen the compositions of the invention can be aqueous or hydroalcoholic.
DETAILED DESCRIPTION OF THE INVENTION
As used herein, % means weight % of the total composition unless otherwise indicated. "m N/m" means milli
Newtons/meter . Dynes/cm is the same as milli Newtons/meter .
The starting materials set forth herein are either known or can be prepared according to known methods. The compositions of the invention can be prepared either by known methods or by methods analogous to known methods.
As noted above, in the present invention, the deterioration of the spray characteristics of a hydroalcoholic solution containing the hair spray resin which occurred as the VOC content was reduced from 80 to 55% was offset by incorporation of a unique combination of hydrocarbon based surfactants and an organic salt. The same benefit can be obtained in aqueous systems.
In the present invention, the hydrocarbon surfactant may be selected from the group consisting of: sodium dioctyl sulfo succinate, sodium dodecyl sulfate, cocoamidopropyl betaine, and sodium laureth sulfate, and the like. In fact any hydrocarbon based surfactant suitable for use in hairspray compositions may be employed in the compositions of the invention. Other examples of anionic surfactants are sodium dinonyl sulfo succinate, sodium decyl sulfate, sodium alpha olefin sulfonate and the like. Nonionic and cationic surfactants may also be employed.
In the present invention, the organic salt is an organic salt which can be used in hairspray compositions and may be selected, for example, from the group consisting of: sodium benzoate, magnesium acetate, sodium acetate, sodium citrate, potassium acetate, sodium salicylate, sodium tartrate, sodium phenylsalicylate, sodium oxalate, sodium adipate, sodium butyrate, sodium caprate, sodium caproate, sodium maleate, sodium malate, sodium malonate, sodium phthalate, sodium propionate, sodium pyruvate, sodium fumarate.
In the present invention, the neutralizing agent may be selected, for example, from the group consisting of: 2- amino , 2 -methyl, 1- propanol , 2 -amino, 2 -methyl , 1,3- propanediol, dimethyl stearamine, histidine, tris (hydroxymethyl) aminomethane, triethanol amine, sodium hydroxide, and potassium hydroxide.
In the present invention, the soluble or dispersible fixative polymer may be selected from the group consisting of: vinyl and acrylic based resins and polyurethane resins. Specific resins include, but are not limited to, acrylamide copolymers, acrylate copolymers, which may or may not be modified by introduction of a quaternary ammonium group. Other fixative resins are described in copending U.S. Patent Application Serial No. 08/717,113 to Bhatt et al , filed September 20,1996. The use of resins or polymers in hairsprays is known as summarized in Grollier et al U.S. Patent No. 4,445,521. The molecular weight of the polymer has a preferred range of about 10,000 to about 1 million Daltons, a more preferred range is about 20,000 to about 500,000 Daltons and the most preferred range is about 30,000 to about 300,000.
In the present invention, the inorganic salt may be selected, for example, from the group consisting of chloride, sulfate, and nitrate salts of sodium, magnesium and ammonium.
In the present invention, the alcohol, if present, may be selected from the group consisting of: ethanol and isopropanol .
In the present invention volatile ester, if present, may be selected, for example, from the group methyl acetate, ethyl acetate, propyl acetate, butyl acetate. In the present invention volatile ketones, if present, may be, for example, acetone.
In the present invention, the propellant, if present, may be selected from the group consisting of: trichlorofluoromethane , dichlorodiflouromethane , dichlorotetraflouromethane, dimethyl ether, propane, n- butane, isobutane and mixtures thereof, and like propellants .
The compositions of the present invention may also include silicone conditioning agents such as cyclomethicone, dimethicone copolyol .
Other optional ingredients which may be included in hairspray compositions of the invention are preservatives such as benzyl alcohol, methyl paraben, propyl paraben, or imidazolidinylurea, cationic conditioners such as cetyl ammonium chloride, stearyl dimethyl benzyl ammonium chloride, coloring agents, chelating agents, such aminetetraacetic acid, plasticizers such as glycols, phthalate esters and glycerines, silicones, emollients, lubricants and penetrants such as various lanolin compounds, protein hydrosylates, and other protein derivatives ethylene adducts and polyoxyethylene cholesterol.
Aerosol and Non-Aerosol Compositions
The invention relates to an aqueous or hydroalcoholic, non- aerosol or aerosol hair spray composition containing a water soluble or dispersable fixative polymer in an amount from about 1% to about 40 % by weight of the composition, a neutralizing agent in an amount from about 0.1 to about 10 wt %, a hydrocarbon based surfactant in an amount from about 0.01% to about 5% by weight, a salt from about 0.01% to about 10% by weight, alcohol from about 0% to about 90%, more preferably 10% to about 90% by weight, a volatile ester from 0 to 90% by weight, more preferably about 10% to about 90% by weight, a volatile ketone from about 0% to about 90%, more preferably, from about 10% to about 90% by weight and water from about 10% to about 98% by weight of the composition. Additionally, in the case of aerosols, a liquefied propellant gas is present from about 5% to 60% by weight .
As can be seen, the compositions of the invention can be aqueous or hydroalcoholic.
Preferred ranges of a water soluble or dispersible fixative polymer are about 1 to about 40% by weight of the composition, more preferably about 2 to about 20%, and most preferably about 3 to about 10%.
Preferred ranges of a neutralizing agent are about 0.1 to about 10% by weight of the composition, more preferably about 0.25% to about 5%, and most preferably about 0.5% to about 2.5%.
Preferred ranges of a hydrocarbon based surfactant are about 0.01% to about 5% by weight of the composition, more preferably about 0.05% to about 2.5%, and most preferably about 0.1% to about 1.0%. Preferred ranges of the salt are about 0.01 to about 10% by weight of the composition, more preferably about 0.05% to about 5%, and most preferably about 0.1% to about 1%.
Preferred ranges of silicone conditioning agents are 0.001 to about 10% by weight of the composition, preferably from 0.01 to about 5%.
Also preferred are compositions of the invention in which the polymer is a ethyl acrylate, methyl methacrylate and methacrylic acid copolymer in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer is a terpolymer of ethyl acrylate, t-butyl acrylate and methacrylic acid in the molecular weight range about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer is a octyl acrylamide, acrylates and butylaminoethyl methacrylate copolymer in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer is a methacrylic acid, n- butyl acrylate and methyl methacrylate copolymer in the molecular weight range about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer is a methacrylic acid, n-butyl acrylate and ethyl methacrylate copolymer in the molecular weight range about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer is a butyl acrylate, methyl methacrylate, hydroxyethyl methacrylate and methacrylic acid copolymer in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer is a vinyl acetate, crotonates and vinyl neodecanoate copolymer in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons.
Also preferred are compositions of the invention in which the polymer is a butyl ester of vinyl methyl ether and maleic anhydride copolymer in the molecular weight range about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer is an ethyl ester of vinyl methyl ether and maleic anhydride copolymer in the molecular weight range about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer consists of polystyrene sulfonate monomers in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer consists of 1 -vinyl -2- pyrrolidone monomers in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer is a vinyl acetate and vinylpyrrolidone copolymer in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo
Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer is a vinylcaprolactam homopolymer in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer is a quaternary ammonium polymer formed by the reaction of diethyl sulfate and a copolymer of vinyl pyrrolidone and dimethyl aminoethylmethacrylate in the molecular weight range of about 10 to about 1000 Kilo Daltons, preferably about 20 to 500 Kilo Daltons, and most preferably about 50 to about 300 Kilo Daltons. Also preferred are compositions of the invention in which the polymer is a modified or an unmodified polyurethane as described in U.S. Patent 6,007,793 issued to Bhatt et al .
Also preferred are compositions of the invention in which the hydrocarbon surfactant is an anionic surfactant. Also preferred are compositions of the invention in which the anionic surfactant is sodium dioctyl sulfosuccinate or its acid form. Also preferred are compositions of the invention in which the anionic surfactant is magnesium dioctyl sulfosuccinate or its acid form. Also preferred are compositions of the invention in which the anionic surfactant is ammonium dioctyl sulfosuccinate or its acid form. Also preferred are compositions of the invention in which the anionic surfactant is sodium dodecyl sulfate or its acid form. Also preferred are compositions of the invention in which the anionic surfactant is magnesium dodecyl sulfate or its acid form. Also preferred are compositions of the invention in which the anionic surfactant is ammonium dodecyl sulfate or its acid form. Also preferred are compositions of the invention in which the anionic surfactant is sodium laureth sulfate or its acid form.
Also preferred are compositions of the invention in which the anionic surfactant is magnesium laureth sulfate or its acid form. Also preferred are compositions of the invention in which the anionic surfactant is ammonium laureth sulfate or its acid form.
Also preferred are compositions of the invention in which the hydrocarbon based surfactant is a zwitterionic surfactant. Also preferred are compositions of the invention in which the zwitterionic surfactant is cocoamidopropyl betaine .
Also preferred are compositions of the invention in which the salt is an organic salt. Also preferred are compositions of the invention in which the organic salt is sodium benzoate. Also preferred are compositions of the invention in which the organic salt is magnesium benzoate. Also preferred are compositions of the invention in which the organic salt is sodium acetate. Also preferred are compositions of the invention in which the organic salt is magnesium acetate.
Also preferred are compositions of the invention in which the salt is an inorganic salt. Also preferred are compositions of the invention in which the inorganic salt is sodium chloride. Also preferred are compositions of the invention in which the inorganic salt is magnesium chloride.
Also preferred are compositions of the invention in which the alcohol is ethanol .
Also preferred are compositions of the invention in which the alcohol is isopropanol .
Also preferred are compositions of the invention further including silicone based surfactants in an amount from 0.01% to 5% by weight of the composition. Also preferred are compositions of the invention in which the silicone based surfactant is dimethicone copolyol . Also preferred are compositions of the invention in which the silicone based surfactant is cyclomethicone .
Also preferred are compositions of the invention in which the neutralizing agent is 2 -amino, 2 -methyl , 1-propanol . Also preferred are compositions of the invention in which the neutralizing agent is dimethyl stearamine . Also preferred are compositions of the invention in which the neutralizing agent is sodium hydroxide. Also preferred are compositions of the invention in which the neutralizing agent is potassium hydroxide.
Also preferred are aerosol compositions of the invention in which the liquefied propellant gas is dimethyl ether. Also preferred are aerosol compositions of the invention in which the liquified propellant gas is a mixture of propane and butane as well as mixtures of dimethyl ether, propane and butane .
Hair spray compositions of the invention can be in the form of hair sprays, spritzes, mousses etc.
The invention also relate to a method of treating or styling hair which comprises contacting said hair with the hairspray compositions of the invention. After hair spray compositions are applied to the hair, said hair can be styled, etc in various ways which are known in the art.
What follows are non-limiting examples of hair spray compositions of the invention.
The materials, definitions, and performance criteria, for low VOC Compositions of the invention having enhanced styling benefits are set forth just below.
Materials
Polymers Amphomer 28-4910 : Octylacrylamide, acrylates and butyl aminoethyl methacrylate copolymer with a molecular weight range of 165 to 225 Kilo Daltons from National Starch and Chemicals Co. of NJ, USA.
Amphomer LV-71 : Octylacrylamide, acrylates and butyl aminoethyl methacrylate copolymer with a molecular weight range of 120 to 165 Kilo Daltons from National Starch and Chemicals Co. of NJ, USA.
HC 7801 : Methacrylic acid, n-butyl acrylate and ethyl methacrylate copolymer with a molecular weight range of 50 to 100 kilo Daltons.
Resyn 28-2930 : Vinyl acetate, crotonates, vinyl neodecanoate copolymer with a molecular weight range of 70 to 110 kilo Daltons from National Starch and Chemicals Co. of NJ, USA..
Neutralizer
2-amino, 2-methyl, 1-propanol from Angus Chemical Company, LA, USA.
Silicone surfactants
Dimethicone copolyol : Silwet L-720 from Witco Corp., WV, USA
Cyclomethicone : DC 245 from Dow Corning, MI, USA Hydrocarbon surfactants
Sodium dioctyl sulfo succinate : Monawet MO 75 -E from Uniqema, NJ, USA
Sodium dodecyl sulfate : Obtained from BDH Laboratory supplies, Poole, England
Cocoamidopropyl betaine : Tegobetaine from GoldSchmidt Industries
Sodium laureth sulfate (2 moles EO) : Empicol ESB 3/AQ from Albright & Wilson, IL, USA
Organic salts:
Sodium benzoate : Boric chemical, IL USA
Magnesium acetate : Aldrich, WI , USA
Propellant
Dimethyl ether : Dymel DME from DuPont Chemical Co., Wilmington, DE USA
Definitions
Dynamic Surface Tension A test liquid in a typical surface tension experiment is static and any surface active material would be in equilibrium. In reality, spraying and subsequent wet out on hair are both dynamic processes and are affected by the surface tension of the formulation. Any materials that are surface active need time to migrate to and organize themselves at the air- liquid interface in order to effectively lower the surface tension. Any difference in perceived static versus dynamic surface tension could result in less than optimum performance. As described below, the faster the surface tension of a composition equilibrates, the better are its hairspray characteristics.
The dynamic surface tension experiment is typically conducted using a maximum bubble pressure method. This method is based on recording the pressure required to form bubbles at a given rate/ frequency in a test liquid. The surface tension is then calculated based on the measured pressure. The results are typically expressed in terms of dynamic surface tension against the surface age. Surface age is the time elapsed between the bubble formation and detachment of the bubble.
A surface age of about 10 msec is the time frame of interest for drop formation in spray process. The liquids used in hair spray applications generally reach equilibrium within 1000 msec (surface age of 1 sec.) . To obtain good spray properties, the difference between the surface tension obtained at very short time scales (ex: 10 msec) and the equilibrium surface tension (obtained for example at 1000 sec or higher) should be as small as possible. The difference in surface tension obtained at a surface age of about 10 msec and that obtained at a surface age of about 1500 msec (Δ 10 - 1500) was chosen as the criterion for comparing the performance of different hair spray solutions.
An absolute surface tension value at about 11 msec was chosen as a criterion for comparing the performance of different hair spray solutions.
Preparation of 55% VOC Non-Aerosol and Aerosol Hairspray Solutions
Equipment
Fawcett Co, Model 103 -A Mixer Mettler Toledo PG5002-S balance medium sized stir bar (optional) beaker transfer pipets
USA Standard Testing Sieve #100, WS Tyler Unc . 150micrometer
Procedure
1. Add item#l, SD Alcohol 40-B into a suitably sized container.
2. Begin moderate agitation using an overhead mixer or a stir bar. 3. Add item#2, neutralizer. Increase agitation to high setting until a vortex is created. - I i
4. Add item#3, polymer, slowly directly into the vortex. Reduce mixing speed to moderate setting. Continue mixing until solution is clear.
5. Add item#4, surfactant, followed item#5, Silicone surfactant, and item#6, fragrance.
6. Add item#7, water followed by item#8, salt.
7. Continue mixing until solution is clear.
8. Conduct an alcohol correction for any alcohol which might have evaporated during the mixing process . 9. Filter solution through a 150 micron mesh filter.
10. Fill an aerosol can with the filter solution and add an appropriate level of propellant, under pressurized conditions (for aerosol only) .
The following compositions 1 through 23 of the invention were made, while compositions 24 through 45 could be made by processes described herein and by processes known to those skilled in the art.
Figure imgf000021_0001
Table 1
55% VOC Non-Aerosol Hair Spray Compositions
Test Solution # 10 11 12
Component CONTROL wt%
Ethanol 53.0 55.0 55.0 55.0 55.0 55.0 55.0 55.0 55.0 55.0 55.0 55.0
Isopropanol 2.0
2 -amino, 2 -methyl, 1-propanol 0.91 0.82 0.82 0.82 0.82 0.82 0.82 0.82 0.82 0.82 0.82 0.41
Amphomer 28-4910 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 3.0
Dimethicone copolyol 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
Cyclomethicone 0.13 0.13 0.13
Sodium dodecyl sulfate 0.2
Sodium dioctyl sulfosuccinate 0.2 0.2 0.2 0.2 0.05 0.2
Sodium lauryl ether sulfate 0.2
Cocoamidopropyl betaine 0.2
I r
Sodium benzoate 0.0 0.144 0.3 0.3 0.07 0.3
Magnesium acetate 0.3 0.3 0.3 0.3 0.3
Fragrance 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12
Water to 100 to 100 to 100 to 100 to 100 to 100 to 100 to 100 to 100 to 100 to 100to 100
Table 2
55% VOC Non-Aerosol Hair Spray Compositions
Test Solution # 13 14 15 16 17 18 19 20 21 22 23
Component wt!
Ethanol 55.0 55.0 55.0 55.0 55.0 55.0 55.0 55.0 55.0 55.0 55.0 I
Figure imgf000023_0001
2 -amino, 2 -methyl, 1-propanol 0.84 0.84 0.74 0.74 0.74 0.74 0.74 0.74 0.74 0.74 0.37
HC 7801 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 3.0
Dimethicone copolyol 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
Cyclomethicone 0.13 0.13 0.13 0.13 0.13
Sodium dodecyl sulfate 0.2
Sodium dioctyl sulfosuccinate 0.2 0.4 0.2 0.2 0.05 0.2
Sodium lauryl ether sulfate 0.2
Cocoamidopropyl betaine 0.2
Sodium benzoate 0.144 0.144 0.144 0.07 0.3
Magnesium acetate 0.144 0.144 0.144 0.1440.3
Figure imgf000024_0001
Fragrance 0.12 0.12 - 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12
Water to 100 100 100 100 100 100 100 100 100 100 100
Table 3
55% VOC Aerosol Hair Spray Compositions
Test Solution # 24 25 26 27 28 29 30 31 32 33 34
Component wt%
Ethanol 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0
2 -amino, 2 -methyl , to 1-propanol 0.56 0.56 0.56 0.56 0.56 0.56 0.56 0.56 0.56 0.56 0.29
Resyn 28-2930 5.7 5.7 5.7 5.7 5.7 5.7 5.7 5.7 5.7 5.7 3.0
Dimethicone copolyol 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
Cyclomethicone 0.13 0.13 0.13
Sodium dodecyl sulfate 0.2
Sodium dioctyl sulfosuccinate 0.2 - - 0.2 0.2 - - - 0.05 - 0.2
Sodium lauryl ether sulfate - - - - - - 0.2 -
Cocoamidopropyl betaine - - - - - 0.2 -
Sodium benzoate 0.0 0.144 0.3 0.3 - - - - - 0.07 0.3
Magnesium acetate - - - - 0.3 0.3 0.3 0.3 0.3 ro
Fragrance 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12
Dimethyl ether 33.0 33.0 33.0 33.0 33.0 33.0 33.0 33.0 33.0 33.0 33.0
Water to 100 100 100 100 100 100 100 100 100 100 100
Table 4
55% VOC Aerosol Hair Spray Compositions
Test Solution # 35 36 37 38 39 40 41 42 43 44 45
Component wt%
Ethanol 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0 22.0
2 -amino, 2 -methyl , 1-propanol 0.74 0.74 0.74 0.74 0.74 0.74 0.74 0.74 0.74 0.74 0.37
Figure imgf000027_0001
Amphomer LV-71 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 1.25
Resyn 28-2930 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 2.5 1.25
Dimethicone copolyol 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3 0.3
Cyclomethicone 0.13 0.13 0.13 0.13 0.13
Sodium dodecyl sulfate 0.2
Sodium dioctyl sulfosuccinate 0.2 0.4 - 0.2 0.2 - - - 0.05 - 0.2
Sodium lauryl ether sulfate - - - - - - 0.2 -
Cocoamidopropyl betaine - - - - - 0.2 -
Sodium benzoate 0.144 0.144 - 0.144 - - - - - 0.07 0.3 ,
Magnesium acetate - - 0.144 0.144 0.144 0.144 0.3 - - K
Fragrance 0.12 0.12 - 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12
Dimethyl ether 33.0 33.0 33.0 33.0 33.0 33.0 33.0 33.0 33.0 33.0 33.0
Water to 100 100 100 100 100 100 100 100 100 100 100
As used in this specification, test solutions of a certain number refer to the test solutions in the tables just above. Thus, test solution #1 is the first solution in the above table 1 and test solution #16 is the sixteenth solution which appears in table 2.
Example 1
Comparison of Dynamic Surface Tension of 55% VOC Test Hair Spray Solutions with Commercial Hair Sprays
A combination of an organic salt (sodium benzoate) and a hydrocarbon surfactant is required to bring the surface tension difference of the 55% VOC test solution down to that of 80% VOC commercial product . A Test solution in which only a hydrocarbon based surfactant is used, a Test solution in which a combination of silicone and hydrocarbon surfactants is present, or test solutions in which a combination of an organic salt and a silicone based surfactant is present do not bring the surface tension difference to that of the 80% VOC product.
Example 2
Comparison of Sodium Benzoate and Magnesium Acetate
Using the Dynamic Surface Tension measurement described herein (units of measurement are mN/m) it was shown in test solutions (that is, compositions of the invention) that both sodium benzoate and magnesium acetate brings the surface tension difference of the 55% VOC test solution closer to that of the commercial product .
Example 3
Effect of Different Surfactants on Dynamic Surface Tension
Using the Dynamic Surface Tension measurement described herein (units of measurement are mN/m) it was shown in test solutions containing Amphomer 28-4910 (that is, compositions of the invention) that hydrocarbon surfactants tested bring down the surface tension difference closer to that of a commercial product .
Example 4
Comparison of Effect of Silicone Versus Hydrocarbon Based Surfactant and Organic Salt on Dynamic Surface Tension
Using the Dynamic Surface Tension measurement described herein (units of measurement are mN/m) it was shown in test solutions (that is, compositions of the invention) that a combination of hydrocarbon surfactant and an organic salt brings down the surface tension difference down to that of commercial product, also with HC 7801 styling resin. In the absence of hydrocarbon surfactant and an organic salt the surface tension difference remains high (> 11) . Example 5
Comparison of Sodium Benzoate and Magnesium Acetate
Using the Dynamic Surface Tension measurement described herein (units of measurement are mN/m) it was shown it was shown in test solutions (that is, compositions of the invention) that both sodium benzoate and magnesium acetate bring the surface tension difference of the 55% VOC test solution closer to that of the commercial product , also with HC 7801 styling resin.
Example 6
Effect of Different Surfactants on Dynamic Surface Tension
Using the Dynamic Surface Tension measurement described herein (units of measurement are mN/m) it was shown (that is, compositions of the invention) that hydrocarbon surfactants tested bring down the surface tension difference closer to that of commercial product, also with HC 7801 styling resin.
Example 7
Effect of Different Levels of Polymers and Surfactants on Dynamic Surface Tension
Using the Dynamic Surface Tension measurement described herein (units of measurement are mN/m) it was shown (that is, compositions of the invention) that the combination of organic salt and the hydrocarbon based surfactant shows synergy at low polymer level of 3.0% and also low dioctyl sulfosuccinate level of 0.05 wt%.
Example 7a
Comparison of Composition of Test Solution of the invention with a Commercial Product Rave in a Consumer Test of Spray Characteristics
Sequential monadic testing of consumers with a composition of the invention (that is, a composition wherein the surface tension difference of the 55% VOC test solution is reduced to about 10.0) shows that it performs as well as the 80% VOC commercial product.

Claims

WHAT IS CLAIMED IS:
1. An aqueous or hydroalcoholic hair styling aid composition selected from the group consisting of:
I. an aqueous or hydroalcoholic non-aerosol hair styling aid composition comprising a water soluble or dispersable fixative polymer in an amount from 1% to 40 % by weight of the composition, a neutralizing agent in an amount from 0.1 to 10 wt%, a hydrocarbon based surfactant in an amount from 0.01% to 5% by weight, a salt from 0.01% to 10% by weight, alcohol from 0% to 90% by weight, and water from 10% to 98% by weight of the composition; and
II. an aqueous or hydroalcoholic aerosol hair styling aid composition containing a water soluble or dispersable fixative polymer in an amount from 1% to 40 % by weight of the composition, a neutralizing agent in an amount from 0.1 to 10 wt%, a hydrocarbon based surfactant in an amount from 0.01% to 5% by weight, a salt from 0.01% to 10% by weight, alcohol from 0% to 90% by weight, and water from 10% to 98% by weight of the composition and a liquified propellant gas from 5% to 60% by weight.
2. A composition according to claim 1 wherein the polymer is in the molecular weight range of about 10 to about 1000 Kilo Daltons.
3. A composition according to claim 1 in which the polymer is a polymer selected from the group consisting of ethyl acrylate, methyl methacrylate and methacrylic acid copolymer; ethyl acrylate, t-butyl acrylate and methacrylic acid terpolymer; octyl acrylamide, acrylates and butylaminoethyl methacrylate copolymer; methacrylic acid, n-butyl acrylate and methyl methacrylate copolymer; methacrylic acid, n-butyl acrylate and ethyl methacrylate copolymer; butyl acrylate, methyl methacrylate, hydroxyethyl methacrylate and methacrylic acid copolymer; vinyl acetate, crotonates and vinyl neodecanoate copolymer; a butyl ester of vinyl methyl ether and maleic anhydride copolymer; an ethyl ester of vinyl methyl ether and maleic anhydride copolymer; a polymer which consists of polystyrene sulfonate monomers; a polymer consists of 1-vinyl -2 -pyrrolidone ; vinyl acetate and vinylpyrrolidone copolymer; vinylcaprolactam homopolymer; a quaternary ammonium polymer formed by the reaction of diethyl sulfate and a copolymer of vinyl pyrrolidone and dimethyl aminoethylmethacrylate; and mixtures thereof; modified or unmodified polyurethanes .
4. A composition according to claim 1 in which the hydrocarbon surfactant is an anionic surfactant selected from the group consisting of sodium dioctyl sulfosuccinate or its acid form; magnesium dioctyl sulfosuccinate or its acid form; ammonium dioctyl sulfosuccinate or its acid form; sodium dodecyl sulfate or its acid form; magnesium dodecyl sulfate or its acid form; ammonium dodecyl sulfate or its acid form; sodium laureth sulfate or its acid form; magnesium laureth sulfate or its acid form; and ammonium laureth sulfate or its acid form.
5. A composition according to claim 1 in which the hydrocarbon surfactant is the zwitterionic surfactant cocoamidopropyl betaine .
6. The composition according to claim 1 wherein the salt is an organic salt selected from the group consisting of sodium benzoate; magnesium benzoate; sodium acetate; and magnesium acetate.
7. The composition according to claim 1 wherein the salt is an inorganic salt selected from the group consisting of sodium chloride and magnesium chloride.
8. The composition according to claim 1 wherein the alcohol is selected from the group consisting of ethanol and isopropanol.
9. A composition according to claim 1 which further
, comprises silicone based surfactants in an amount from 0.01% to 5% by weight of the composition.
10. The compositions in claim 9 in which the silicone based surfactant is selected from the group consisting of dimethicone copolyol and cyclomethicone.
11. The composition in claim 1 in which the neutralizing agent is selected from the group consisting of 2- amino, 2 -methyl , 1-propanol; dimethyl stearamine; sodium hydroxide; and potassium hydroxide.
12. The composition in accordance with claim 1 wherein the liquified propellant gas is selected from the group consisting of dimethyl ether, a mixture of propane and butane, and a mixture of dimethyl ether, propane and butane .
13. The composition according to claim 1 in which the volatile ester is methyl acetate, ethyl acetate, propyl acetate or butyl acetate
14. The composition according to claim 1 in which the volatile ketone is acetone.
15. A method for treating hair which comprises contacting said hair with a composition according to claim 1.
16. A composition according to claim 1 which further comprises a volatile ketone from about 10% to about 90; by weight .
7. A composition according to claim 1 which further comprises a volatile ester from about 10% to about 90% by weight .
PCT/EP2000/001945 1999-03-25 2000-03-06 Low voc hair spray compositions having enhanced styling benefits WO2000057846A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU31644/00A AU3164400A (en) 1999-03-25 2000-03-06 Low voc hair spray compositions having enhanced styling benefits
JP2000607597A JP2002540132A (en) 1999-03-25 2000-03-06 Low volatile organic compound hairspray composition with the advantages of improved styling

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US12602799P 1999-03-25 1999-03-25
US60/126,027 1999-03-25
US09/307,060 US6395264B1 (en) 1999-05-07 1999-05-07 Low VOC hair spray compositions having enhanced styling benefits
US09/307,060 1999-05-07

Publications (1)

Publication Number Publication Date
WO2000057846A1 true WO2000057846A1 (en) 2000-10-05

Family

ID=26824205

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/001945 WO2000057846A1 (en) 1999-03-25 2000-03-06 Low voc hair spray compositions having enhanced styling benefits

Country Status (4)

Country Link
JP (1) JP2002540132A (en)
AR (1) AR023149A1 (en)
AU (1) AU3164400A (en)
WO (1) WO2000057846A1 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001070179A1 (en) * 2000-03-24 2001-09-27 Unilever Plc Low voc hair spray compositions having enhanced styling benefits
EP1321130A2 (en) * 2001-12-20 2003-06-25 L'oreal Reshapable hair styling composition comprising (meth)acrylic copolymers
EP1336401A1 (en) * 2001-12-20 2003-08-20 L'oreal Reshapable hair styling non rinsed compositions comprising (meth)acrylic copolymers
US6645478B2 (en) 2001-06-22 2003-11-11 L'oreal S.A. Reshapable hair styling composition comprising (meth)acrylic copolymers of four or more monomers
US6667378B2 (en) 2001-06-22 2003-12-23 L'oreal, S.A. Reshapable hair styling composition comprising heterogeneous (meth)acrylic copolymer particles
US6689346B1 (en) 2000-10-25 2004-02-10 L'oreal Reshapable hair styling composition comprising acrylic copolymers
DE102005001820A1 (en) * 2005-01-13 2006-08-10 Beiersdorf Ag Hair spray formulations with high VOC contents and with a terpolymer of methacrylic acid, methyl methacrylate, hydroxyethyl methacrylate and butyl acrylate
EP1792600A1 (en) * 2005-12-05 2007-06-06 KPSS-Kao Professional Salon Services GmbH Aerosol foam composition
US8349296B2 (en) 2006-12-21 2013-01-08 Kpss-Kao Professional Salon Services Gmbh Aerosol foam composition
US20210338556A1 (en) * 2018-10-23 2021-11-04 Kao Germany Gmbh Shine enhancing spray composition

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1885330A1 (en) * 2005-05-28 2008-02-13 Unilever PLC Aerosol hairspray composition
JP5346535B2 (en) * 2008-09-30 2013-11-20 株式会社マンダム Hair cosmetics
EP2407144A1 (en) * 2010-07-13 2012-01-18 The Procter & Gamble Company Aerosol hairspray product for styling and/or shaping hair

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4871530A (en) * 1986-03-19 1989-10-03 L'oreal Aqueous delayed-foaming cosmetic composition for hair and skin treatment
DE3819620A1 (en) * 1988-06-09 1989-12-14 Wella Ag Foaming aerosol composition for permanent reshaping of hair
DE9210516U1 (en) * 1992-08-06 1993-12-09 Kao Corp Gmbh Human hair conditioning preparations

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX166372B (en) * 1989-10-31 1993-01-04 Procter & Gamble COMPOSITIONS FOR HAIR CARE
US5164177A (en) * 1991-06-18 1992-11-17 Helene Curtis, Inc. Aqueous hair styling aid
DE4315405A1 (en) * 1993-05-08 1994-11-10 Wella Ag Hair treatment products
DE19504502A1 (en) * 1995-02-13 1996-08-14 Henkel Kgaa Corrosive agent and dispenser
US5681546A (en) * 1996-03-18 1997-10-28 Chesebrough-Pond's Usa Co., Division Of Conopco, Inc. Hair styling mousse
JPH1192346A (en) * 1997-09-26 1999-04-06 Kao Corp Hair cosmetic

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4871530A (en) * 1986-03-19 1989-10-03 L'oreal Aqueous delayed-foaming cosmetic composition for hair and skin treatment
DE3819620A1 (en) * 1988-06-09 1989-12-14 Wella Ag Foaming aerosol composition for permanent reshaping of hair
DE9210516U1 (en) * 1992-08-06 1993-12-09 Kao Corp Gmbh Human hair conditioning preparations

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
A. EACHUS ET AL.: "fORMULATING LOW-VOC HAIR SPRAYS FOR OPTIMUM PERFORMANCE", SOAP/COSMETICS/CHEMICAL SPECIALTIES, vol. 74, no. 9, 1998, US, pages 56 - 57, XP000915439 *

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001070179A1 (en) * 2000-03-24 2001-09-27 Unilever Plc Low voc hair spray compositions having enhanced styling benefits
US6689346B1 (en) 2000-10-25 2004-02-10 L'oreal Reshapable hair styling composition comprising acrylic copolymers
US7122175B2 (en) 2001-06-22 2006-10-17 L'oreal S.A. Reshapable hair styling composition comprising (meth)acrylic copolymers of four or more monomers
US6645478B2 (en) 2001-06-22 2003-11-11 L'oreal S.A. Reshapable hair styling composition comprising (meth)acrylic copolymers of four or more monomers
US6667378B2 (en) 2001-06-22 2003-12-23 L'oreal, S.A. Reshapable hair styling composition comprising heterogeneous (meth)acrylic copolymer particles
US7048916B2 (en) 2001-06-22 2006-05-23 L'oreal S.A. Reshapable hair styling composition comprising heterogeneous (meth)acrylic copolymer particles
EP1336401A1 (en) * 2001-12-20 2003-08-20 L'oreal Reshapable hair styling non rinsed compositions comprising (meth)acrylic copolymers
EP1321130A3 (en) * 2001-12-20 2003-07-02 L'oreal Reshapable hair styling composition comprising (meth)acrylic copolymers
EP1321130A2 (en) * 2001-12-20 2003-06-25 L'oreal Reshapable hair styling composition comprising (meth)acrylic copolymers
DE102005001820A1 (en) * 2005-01-13 2006-08-10 Beiersdorf Ag Hair spray formulations with high VOC contents and with a terpolymer of methacrylic acid, methyl methacrylate, hydroxyethyl methacrylate and butyl acrylate
EP1792600A1 (en) * 2005-12-05 2007-06-06 KPSS-Kao Professional Salon Services GmbH Aerosol foam composition
US8349296B2 (en) 2006-12-21 2013-01-08 Kpss-Kao Professional Salon Services Gmbh Aerosol foam composition
US20210338556A1 (en) * 2018-10-23 2021-11-04 Kao Germany Gmbh Shine enhancing spray composition

Also Published As

Publication number Publication date
JP2002540132A (en) 2002-11-26
AR023149A1 (en) 2002-09-04
AU3164400A (en) 2000-10-16

Similar Documents

Publication Publication Date Title
US4764363A (en) Hair styling mousse
CA1275936C (en) Hair styling mousse
US6395264B1 (en) Low VOC hair spray compositions having enhanced styling benefits
US4834968A (en) Hair styling mousse
CA2089049C (en) Aerosol hairsprays containing low voc content
AU2000256320B2 (en) Branched/block copolymers for treatment of keratinous substrates
KR100622353B1 (en) Branched/block copolymers for treatment of keratinous substrates
CA2085641C (en) Hair treatment composition
WO2000057846A1 (en) Low voc hair spray compositions having enhanced styling benefits
EP0796611B1 (en) Hair styling mousse
JP2003521442A (en) Hair care composition
JP2002527368A (en) Hair styling composition
CA2013898A1 (en) Non-aerosol pump hair spray compositions
KR100251145B1 (en) Nonionic foaming agent for foaming cosmetic compositions
WO2001070179A1 (en) Low voc hair spray compositions having enhanced styling benefits
JP2007223943A (en) Hair cosmetic composition
DE60225038T2 (en) COSMETIC COMPOSITIONS
JP3484254B2 (en) Hairdressing composition
JP3818456B2 (en) Hair cosmetics
JPH0482819A (en) Hair cosmetic
JP2724220B2 (en) Foam composition
JPH101425A (en) Spray type hair dressing agent
JPS632918A (en) Hair styling mousse
JPH11171738A (en) Hair spray composition
JP2002193767A (en) Foaming aerosol composition

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CR CU CZ DE DK DM EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT TZ UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SL SZ TZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
ENP Entry into the national phase

Ref country code: JP

Ref document number: 2000 607597

Kind code of ref document: A

Format of ref document f/p: F

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

122 Ep: pct application non-entry in european phase