Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/31—Hydrocarbons
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
  • A61K8/04—Dispersions; Emulsions
  • A61K8/042—Gels
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
  • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
  • A61K8/8105—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
  • A61K8/8111—Homopolymers or copolymers of aliphatic olefines, e.g. polyethylene, polyisobutene; Compositions of derivatives of such polymers
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q19/00—Preparations for care of the skin
• • 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
  • A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
  • A61K2800/30—Characterized by the absence of a particular group of ingredients

Definitions

• the presently described invention is in the field of personal care.
• the present invention provides personal care, preferably skin care compositions, comprising polyolefin blends comprising at least one metallocene catalyzed polyolefin with a density above 0.90 g/cm 3 , at least one metallocene catalyzed polyolefin with a density equal to or below 0.90 g/cm 3 , provided that the average melt index for the polyolefin blend is greater than 7, preferably greater than 8; and a cosmetically acceptable hydrocarbon oil, provided that the composition does not contain ethylene acrylic copolymer.
• the hydrocarbon oil is selected from various carbon chain length oils, such as those sold under the tradenames LILAC, GEMSEAL 25, GEMSEAL 40, PERMETHYL 101A, PERMETHYL 99A,SILKFLO 364 NF, SILKFLO 366 NF, FANCOL POLYISO 200-CG, FANCOL POLYISO 300-CG, FANCOL POLYISO 450-CG,
• the hydrocarbon oil is a C14-C22 hydrocarbon oil. In one embodiment, the hydrocarbon oil is a ⁇ C14 hydrocarbon oil. In one embodiment, the hydrocarbon oil is a >C22 hydrocarbon oil.
• Personal care relates to compositions to be topically applied to a person (including mouth, ear, and nasal cavities, but not ingested).
• personal care compositions include skin care products (e.g., facial lotions/creams, moisturizers, face/eye/body serums, leave on and rinse off body/hand lotions/creams, eye lotions/creams, sunscreens, foundation, blush, eye-shadow, primer, mascara, eye-liner, lipstick, cleansers,
• skin care products e.g., facial lotions/creams, moisturizers, face/eye/body serums, leave on and rinse off body/hand lotions/creams, eye lotions/creams, sunscreens, foundation, blush, eye-shadow, primer, mascara, eye-liner, lipstick, cleansers,
• the personal care composition is a skin care composition.
• skin care composition is a leave-on skin care composition.
• Cosmetically acceptable refers to ingredients typically used in personal care compositions, and is intended to underscore that materials that are toxic when present in the amounts typically found in personal care compositions are not contemplated as part of the present invention.
• Metallocene catalyzed polyolefins are polyolefins produced with a metallocene catalyst as described in U.S. Pat. Nos. 4,701,432, 5,322,728, and 5,272,236, each of which is incorporated herein by reference in its entirety.
• the metallocene catalyzed polyolefins are polyethylenes produced with a metallocene catalyst.
• metallocene catalyzed polyethylenes are available e.g. from The Dow Chemical Company under the trademark AFFINITY or ENGAGE (ethylene/octene copolymers) and from Exxon Chemical Company under the trademark EXACT
• the metallocene catalyzed poly olefin is at least one of ethylene/octene copolymers, ethylene/butene copolymers, ethylene/hexene copolymers, ethylene/propylene or ethylene/butene/hexene terpolymers, preferably an ethylene octene copolymer.
• the metallocene catalyzed polyolefin is a
• propylene/alpha-olefin copolymer which is further described in details in the U.S. Patent Nos. 6,960,635 and 6,525,157, each of which is incorporated herein by reference in its entirety.
• Such propylene/alpha-olefin copolymers are commercially available from The Dow Chemical Company, under the tradename VERSIFYTM, or from ExxonMobil
• VISTAMAXXTM Commercial Chemical Company, under the tradename VISTAMAXXTM.
• Other desirable polyolefins are sold by The Dow Chemical Company under the trademarks AMPLITY, ATTANE, INFUSE, NORDEL, and VLDPE.
• metallocene catalyzed polyolefins of medium or high density contribute good aesthetics, but form unstable gels.
• Low density metallocene catalyzed polyolefins (0.86 - 0.90 g/cm 3 ) form stable gels, though the aesthetics are poor. Density is measured by ASTM D 792.
• low molecular weight metallocene catalyzed polyolefins (Melt Index > 8 by ASTM D 1238) showed much better solubility in a hydrocarbon medium and maintain phase homogeneity.
• High molecular weight metallocene catalyzed polyolefins led to hard gels that are not easily workable in personal care formulations.
• the average melt index for the polyolefin blend is greater than 8. In one embodiment, the average melt index for the polyolefin blend is greater than 8.5.
• Table 1 contains a list of commercially available metallocene catalyzed
• the composition does not contain ethylene acrylic copolymer. Copolymerizing ethylene with acrylic acid yields ethylene-acrylic acid (EAA) copolymers, which are known for use in personal care compositions. However, in the presently described skin care compositions, with their concurrent relatively low pH and low surfactant levels, EAA would deleteriously flocculate and ruin the stability of the formulation.
• the at least one metallocene catalyzed polyolefin with a density above 0.90 g/cm 3 is present in a range from 1 wt to 60 wt of solids by weight of the Polyolefin and Oil blend.
• the at least one metallocene catalyzed polyolefin with a density equal to or below 0.90 g/cm 3 is present in a range from 1 wt to 60 wt of solids by weight of the Polyolefin and Oil blend.
• the ratio of at least one metallocene catalyzed polyolefin with a density above 0.90 g/cm 3 to the at least one metallocene catalyzed polyolefin with a density equal to or below 0.90 g/cm 3 is between 1: 95 and 95:1, and preferably is 1:1, 1.5: 1, 2:1, 3:1.
• the polyolefin blend is prepared by shearing the above-described polyolefins in a carrier fluid such as, but not limited to, aromatic hydrocarbons, aliphatic hydrocarbons, alcohols, esters, ethers, glycols, carbonates, silicones, glycol ethers at high temperature, above 100°C, preferably from 120°C to 150°C.
• a carrier fluid such as, but not limited to, aromatic hydrocarbons, aliphatic hydrocarbons, alcohols, esters, ethers, glycols, carbonates, silicones, glycol ethers at high temperature, above 100°C, preferably from 120°C to 150°C.
• the polyolefin blend is referred to as an "oil gel,” however, the polyolefin blend can be powder, pellet/bead, oil gel/ oil paste, or water dispersion.
• the polyolefin blend may work together with other skin care ingredients to give a synergic effect, such as emollients (hydrocarbon oils, esters, natural oils, silicones, etc.), waxes, sensory modifiers, rheology modifiers, humectants (glycerin, etc.), sunscreen actives, natural ingredients, bio-actives, colorants, hard particles, conditioning agent, and other silicones.
• emollients hydrocarbon oils, esters, natural oils, silicones, etc.
• waxes waxes
• sensory modifiers rheology modifiers
• humectants glycerin, etc.
• sunscreen actives natural ingredients, bio-actives, colorants, hard particles, conditioning agent, and other silicones.
• Batch A and Batch B are tested by incorporating 5% polymer active of polyolefin oil blend in skin care lotion formulations (conventional lotion containing Water 53%, Glycerin 2%, Xanthan Gum 0.7% as the thickener, Cetearyl Alcohol (and) Ceteareth 20 3% as the emulsifier, Glyceryl Stearate 2% as the wax, Petrolatum 5% as the emollient, and Neolone PE 0.6% as the preservative).
• skin care lotion was prepared using conventional DC 9045 silicone elasotmer gel as the sensory agent. Table 3 shows the in- vivo sensory results.
• inventive polyolefin blend oil gels compare favorably with the benchmark-DC 9045 on smoothness, softness, tackiness and spreading.
• the C14-22 hydrocarbon oil probably caused the slower absorption and more oiliness/waxiness feel, but is generally acceptable and likely can be routinely optimized.
• the stability of the inventive gels was favorable (unlike single component polyolefin oil gels).

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• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Veterinary Medicine (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Birds (AREA)
• Epidemiology (AREA)
• Oral & Maxillofacial Surgery (AREA)
• Chemical & Material Sciences (AREA)
• Dispersion Chemistry (AREA)
• Dermatology (AREA)
• Cosmetics (AREA)

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• 2013
  • 2013-09-18 US US14/430,079 patent/US9872820B2/en not_active Expired - Fee Related
  • 2013-09-18 EP EP13771013.3A patent/EP2882417B1/en not_active Not-in-force
  • 2013-09-18 CN CN201380049146.9A patent/CN104812366B/zh not_active Expired - Fee Related
  • 2013-09-18 WO PCT/US2013/060281 patent/WO2014047102A2/en not_active Ceased
  • 2013-09-18 JP JP2015533138A patent/JP6408470B2/ja not_active Expired - Fee Related
  • 2013-09-18 BR BR112015006442A patent/BR112015006442B1/pt not_active IP Right Cessation

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