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
  • A61K8/72—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
  • A61K8/85—Polyesters
• • 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
  • A61K8/27—Zinc; 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
  • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
  • A61K8/29—Titanium; 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
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/35—Ketones, e.g. benzophenone
• • 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
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
  • A61K8/361—Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides 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
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
  • A61K8/368—Carboxylic acids; Salts or anhydrides thereof with carboxyl groups directly bound to carbon atoms of aromatic rings
• • 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
  • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
  • A61K8/37—Esters of carboxylic acids
• • 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
  • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
• • 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
  • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
  • A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof
  • A61K8/445—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof aromatic, i.e. the carboxylic acid directly linked to the aromatic ring
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K8/00—Cosmetics or similar toiletry preparations
  • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
  • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
  • A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
  • A61K8/466—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfonic acid derivatives; Salts
• • 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
  • A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
  • A61K8/494—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with more than one nitrogen as the only hetero atom
  • A61K8/496—Triazoles or their condensed derivatives, e.g. benzotriazoles
• • 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
  • A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
  • A61K8/494—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds with more than one nitrogen as the only hetero atom
  • A61K8/4966—Triazines or their condensed derivatives
• • 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
  • A61K8/817—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a single or double bond to nitrogen or by a heterocyclic ring containing nitrogen; Compositions or derivatives of such polymers, e.g. vinylimidazol, vinylcaprolactame, allylamines (Polyquaternium 6)
  • A61K8/8182—Copolymers of vinyl-pyrrolidones. Compositions of derivatives of such polymers
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q17/00—Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
  • A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q19/00—Preparations for care of the skin
  • A61Q19/10—Washing or bathing preparations
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
  • A61Q5/00—Preparations for care of the hair
  • A61Q5/02—Preparations for cleaning the hair

Definitions

• the present invention relates to compositions having a sunscreen.
• the composition is used to make personal cleansing products, such as, for example, cleansing bars, body and facial washes, shower gels and shampoos. More particularly, the present invention relates to personal cleansing products, such as a cleansing bar, a body and/or facial wash or a hair shampoo, that provide cleansing activity and sunscreen protection.
• UV radiation has been linked to photoaging of the skin, resulting in undesired changes in the appearance of the skin, such as wrinkling and sagging. Exposure to UV radiation has even been linked to the more serious skin cancers, such as melanomas.
• U.S. Patent No. 4,704,321 to Bernstein provides a liquid detergent with a sunscreen agent.
• the Bernstein formula fails to provide a personal cleansing composition that has been clinically shown to provide an SPF greater than 1.6, much less greater than 5.
• the Bernstein patent fails to provide a personal cleansing bar that includes a sunscreen or a method of producing such a cleansing bar.
• U.S. Patent No. 4,954,332 to Bissett, et al. discloses photoprotective compositions comprising tocopherol sorbate and an anti- inflammatory.
• the Bissett et al. patent specifically distinguishes between pharmaceutical/cosmetic compositions, which may include sunscreens, and cleansing compositions, which are not disclosed as including sunscreens.
• a personal cleansing composition that comprises a vehicle, a sunscreen and a film former, and by providing a process of preparing a personal cleansing bar from the foregoing composition by incorporating an absorbing agent.
• the personal cleansing composition or product of the present invention basically comprises a vehicle, a sunscreen, and a film former.
• the composition may include other ingredients, such as, for example, a fragrance and a color. All percentages set forth herein are weight percentages of the final composition unless otherwise specified.
• the vehicle is any type of vehicle that is compatible with a surfactant or with surfactant systems, and can be topically applied. It is preferred that the vehicle is a cleansing base.
• the cleansing bases most commonly used to manufacture personal cleansing products are soap bases, detergent or "syndet” bases or “combo” bases. (“Combo” bases, as the term indicates, comprise a combination of both syndet and soap bases.) In general, most such cleansing bases have a pH from about 4.5 to about 10.5. As known in the art, soap bases, generally have a higher pH than syndet bases. Soap bases generally have an average pH from about 10 to about 10.5. A superfatted soap base generally has an average pH of about 9 to about 9.5.
• Syndet bases have lower pH ranges than soap bases and are, thus, the more preferred bases for providing personal cleansing compositions having a pH similar to the pH of skin, about 4.5 to about 7.4.
• "combo" bases generally have an average pH that is intermediate syndet bases and soap bases, generally from about 7.5 to about 10.0.
• the cleansing base is a syndet base, it is preferred that the cleansing base contains sodium cocoyl isethionate.
• a syndet cleansing base is the preferred cleansing base.
• the preferred cleansing base is the "combo" base.
• one example of a preferred cleansing base has from about 40 wt% to about 50 wt% of sodium cocoyl isethionate, preferably in powder form; from about 10 wt% to about 20 wt% free fatty acid; from about 10 wt% to about 20 wt% of a combination of sodium stearate and sodium cocoate; from about 4 wt% to about 7 wt% water; from about 2 wt% to about 10 wt% sodium isethionate; and up to about 5 wt% sodium vinyl sulfonate.
• a preferred cleansing base for the cleansing bar and body wash embodiments of the present invention is JORDAPON SB-II, a syndet base manufactured by BASF Corporation.
• Other suitable cleansing bases for use in the present invention are high active sodium cocyl isethionate solids (a non-limiting example is available from Finetex Corporation under the tradename "TAURANOL 1-78") and high active sodium methyl cocyl taurate solids (a non-limiting example is manufactured by Finetex Corporation under the tradename "TAURANOL WS H.P.”).
• a second, more preferred, example of a cleansing base for formulating cleansing bars of the present invention has from about 30 wt% to about 70 wt%, preferably from about 50 wt% to about 55 wt%, of sodium cocoyl isethionate in powder form; from about 5 wt% to about 15 wt%, preferably from about 8 wt% to 12 wt% stearic acid, which is preferably triple pressed; and from about 1 wt% to about 10 wt%, more preferably from about 2 wt% to about 4 wt%, sodium isethionate.
• the remainder of this preferred cleansing base may include from about to 1 wt% about 3 wt% PEG-1000; from about 4 wt% to about 6 wt% water; from about 0.1 wt% to about 2 wt% sodium chloride; and from about 3 wt% to about 10 wt% maltodextrin (a non-limiting example being MALTRIN M-100, available from Grain Processing Company).
• a third example of a preferred cleansing base includes from about 25 wt% to about 55 wt%, more preferably from about 35 wt% to about 45 wt% of a conventional soap base that comprises about 85% tallow and about 15% coconut oil; from about 25 wt% to about 55 wt%, more preferably from about 35 wt% to about 45 wt% sodium cocoyl isethionate, preferably in powder form.
• This preferred cleansing base may also include from about 0.1 wt% to about 2.0 wt% titanium dioxide.
• the cleansing base of the present invention can include up to 10 wt% of glycerin.
• the cleaning base also has either a salt of an alkyl ether sulfate, a salt of an alkyl sulfate, a polyglucoside, or any mixture thereof. It is more preferred that the salt of the alkyl ether sulfate is a salt of lauryl ether sulfate. It is more preferred that the salt of the alkyl sulfate is a salt of lauryl sulfate. It is more preferred that the polyglucoside is lauryl polyglucose (a non-limiting example is available under the tradename "PLANTAREN" from Henkel Corporation).
• the preferred salts are sodium salts, ammonium salts or triethanolamine ("TEA") salts.
• TAA triethanolamine
• the cleansing base has sulfosuccinates, amphoterics, imidazolines, polyglucosides, or mixtures thereof.
• the preferred polyglucoside is lauryl polyglucose.
• the cleansing composition of the present invention includes a sunscreen that is compatible with the chosen vehicle or a cleansing base.
• the composition includes a sunscreen.
• the salt may be an organic salt or an inorganic salt.
• Organic and inorganic salt equivalents to the sunscreens indicated above are known in the art.
• Ciba-Geigy under the tradename "TINOSORB-M”.
• TINOSORB-S A non-limiting example of bis-octoxyphenol methoxphenyl triazine is available from Ciba-Geigy under the tradename "TINOSORB-S”.
• Sunscreens have varying optimal pH ranges. Accordingly, the choice of the sunscreen or sunscreen component will depend upon the pH of the vehicle used. However, it is preferred that the sunscreen is selected from the following group: octocrylene, octyl methoxycinnamate, octyl salicylate, oxybenzone, homomenthyl salicylate, butylmethoxy dibenzoylmethane, and mixtures thereof. It is more preferred that the sunscreen is oxybenzone, octyl methoxycinnamate, octocrylene, or any mixture thereof.
• the sunscreen is a mixture of two or more sunscreens. It is further preferred that the sunscreen provides both UVA and UVB protection and, thus, it is preferred that the sunscreen includes both an UVA sunscreen and an UVB sunscreen. In addition, when the personal cleansing composition includes a colorant, it is preferred that the sunscreen includes sulsiobenzone as a photostabilizer.
• the third component of the composition is a film former.
• the film former is a waterproofing film former that provides adhesion properties for the sunscreen so that the sunscreen will adhere to the skin during, and remain adhered after, the rinsing process. Any known waterproofing film former that is known in the art to be compatible with a sunscreen and the cleansing base, and that can be topically applied, would be suitable for use in the present invention. Table 2 sets forth preferred waterproofing film formers for use in the present invention, and the corresponding preferred and more preferred ranges for each.
• Range % Range %
• the personal cleansing composition of the present invention may be used to topically deliver other active ingredients in addition to the sunscreen agent.
• a personal cleansing product that provides both insect repellent protection and sunscreen protection would be desired.
• insect repellents include: N,N-diethyltolumide (DEET), citronella, ethyl butylacetylaminopropionate (a non-limiting example is available from Merck Industries under the trade name "IR3535").
• DEET N,N-diethyltolumide
• IR3535 ethyl butylacetylaminopropionate
• IR3535 ethyl butylacetylaminopropionate
• the personal cleansing product would not be suitable for the washing certain areas of the face, particularly around the eyes.
• the personal cleansing product can include from about 0.3 wt% to about 30 wt% insect repellent. To accommodate the inclusion of the insect repellent, the content of ingredients, such as the cleansing base and/or the sunscreen could be decreased accordingly.
• an absorbing agent such as talc, sodium cocoyl isethionate powder or other ingredients that have a physical appearance similar to talc, such as starch or oat flour, to absorb the sunscreen so that the composite may be processed through conventional cleansing bar machinery.
• Sodium cocoyl isethionate powder is particularly preferred because it performs the triple functions of (1 ) absorbing the sunscreen to decrease the "stickiness/tackiness" of the composite, (2) decreasing the pH of the composite to increase the stability of the sunscreen, which is often unstable at higher pH values, and (3) foaming/surfactant action.
• the absorbing agent is sodium cocoyl isethionate (powder)
• the ranges are as previously set forth above.
• the cleansing base comprises from about 2 wt% to about 20 wt%, and more preferably from about 5 wt% to about 10 wt%.
• Sample milled cleansing bars (“sample A cleansing bars") were manufactured by conventional milled soap making methods on conventional soap making equipment.
• the cleansing base used to make the sample A cleansing bar is a syndet cleansing base available from BASF Industries, Inc. under the tradename JORDAPON SB-II Syndet Base, ("the sample A cleansing base")
• the sample A cleansing base has from about 40 wt% to about 50 wt% of sodium cocoyl isethionate, from about 10 wt% to about 20 wt% free fatty acid, from about 10 wt% to about 20 wt% sodium stearate/sodium cocoate, from about 4 wt% to about 7 wt% water, from about 2 wt% to about 10 wt% sodium isethionate, and up to about 5 wt% sodium vinyl sulfonate.
• the sample A cleansing base has a pH about 7.4.
• the sample A cleansing base was added to a mixer along with 7 wt% of the sunscreen, ethylhexylmethoxycinnamate, and 3 wt% of the waterproofing film former, a PVP/Eicosene copolymer ("GANEX® V-220"). Then, color and fragrance additives were added. Thereafter, the composite was mixed and then milled, to form a homogeneous mass. The homogenous mass was then extruded, cut into billets and stamped into rectangular bars.
• a PVP/Eicosene copolymer (“GANEX® V-220"
• the sample A cleansing bar was then subjected to the following test procedure.
• the sample A cleansing bar was lathered with warm water in the hands of the user. After the aforementioned lathering period, the user applied the lather to the test area and rubbed the lather onto the test area for fifteen seconds. The test area was the lower back of human subjects. After the completion of the application, the test area was rinsed with warm water for five seconds and then patted dry with a cloth towel. The application was then allowed to "air dry" for an additional two minutes, after which the test area was subjected to UV radiation exposure from a 150 watt xenon arc light source.
• SPF Sunscreen Protection Factor
• the sunscreen/film former mixture was prepared by combining and mixing the GANEX V-220, benzophenone-3, octyl methoxycinnamate and octocrylene at 60°C to 70°C to form a uniform mixture to be added later to the Sample B cleansing base.
• the Sample B cleansing base was prepared as follows. The soap base (comprising about 85% tallow and about 15% coconut oil), sodium cocoyl isethionate (powder) and titanium dioxide were added into the amalgamator (mixer) at room temperature.
• the sunscreen/film former having been uniformly mixed at 38°C in a separate container, was added to the Sample B cleansing base in the amalgamator. The amalgamator was turned on and the entire composite was mixed for five minutes.
• Example B cleansing bars were then formed according to conventional methods.
• This composite was mixed 10 minutes at about 82°C. After the 10 minute mixing period, the sunscreen/film former additive was added, and the composite was mixed for an additional 40 minutes at about 78°C to about 82°C before being discharged from the mixer. The hot composite was then processed over a "chill roll", and prepared into bar form on conventional laboratory extrusion equipment.
• sample B cleansing bars were subjected to temperatures of about 40°F and about 110°F for one month to determine the stability of the sunscreen component. No significant decrease in concentration occurred for any of the three sunscreens (benzophenone-3, octocrylene and octylmethoxycinnamate)
• other active ingredients may be added to the cleansing compositions of the present invention.
• one or more of fragrances, moisturizers, emollients, superfatting agents, vitamins, keratolytics, skin whitening ingredients, anti-acne agents, anti- bacterial agents may be incorporated into the cleansing compositions of the present invention.
• Exemplary anti-bacterial agents include TRICLOSAN, available from Ciba-Geigy, and trichlorocarbanilide, available from Monsanto Corporation.
• An exemplary superfatting agent comprises from about 5 wt% to about 10 wt% coconut fatty acids. To accommodate such active ingredients, the sunscreen or, more preferably the cleansing base, can be decreased accordingly.

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• Health & Medical Sciences (AREA)
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• Veterinary Medicine (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Epidemiology (AREA)
• Birds (AREA)
• Emergency Medicine (AREA)
• Chemical & Material Sciences (AREA)
• Inorganic Chemistry (AREA)
• Dermatology (AREA)
• Cosmetics (AREA)

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Citations (5)

• 1999
  • 1999-09-30 GB GB0106810A patent/GB2357697A/en not_active Withdrawn
  • 1999-09-30 WO PCT/US1999/022519 patent/WO2000018367A1/en active Application Filing
  • 1999-09-30 DE DE19983641T patent/DE19983641T1/de not_active Withdrawn
  • 1999-09-30 AU AU62732/99A patent/AU6273299A/en not_active Abandoned

Patent Citations (5)

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