Description. Antaron (Ganex) Sensory is a water dispersible polymer that has a Chemistry of Antaron (Ganex) sensory polymer Antaron/Ganex V Antaron polymers are Ashland’s signature series of skin care film formers, including Antaron V, Antaron V, Antaron VF, Antaron WP, and . ANTARON V F. Presentation. DESCRIPTION Copolymers of vinylpyrrolidone and long-chain a-olefins. PROPERTIES Antaron V/WP grades are excellent.
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Water-resistant cosmetic formulations comprising a hydrophobically modified vinylpyrrolidone copolymer. The present invention relates to the use of copolymers comprising N-vinylpyrrolidone and a hydrophobically modified acrylic acid derivative as means for improving the water resistance of a cosmetic formulation, and to the use of these copolymers in sunscreen compositions for increasing the sun protection factor, and furthermore the present invention relates to cosmetic formulations comprising these copolymers.
For cosmetic formulations which are applied, for example, to the skin, good water resistance is often desirable. The consumer expects that for example a make-up composition for v2220 eyes such as mascara is washed away neither by tear fluid nor by drops of perspiration. Similarly, the consumer expects an applied sunscreen.
ANTARON V-220 F
Although many cosmetic formulations already lay claim to the properties of waterproofness or water resistance, there is still a need for products with longer-lasting water resistance associated with improved skin feel upon application of the cosmetic formulation. Many of the commercially available cosmetic formulations which lay claim to water resistance are perceived by the user upon application as being waxy, greasy, sticky and oily.
Consumers thus demand not only cosmetic products with improved water resistance, but also products which, upon application, leave behind a supple and soft impression and do not feel waxy, greasy or oily.
In order to achieve the water resistance of a cosmetic formulation, polymers are often added to the cosmetic formulations.
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The disadvantage of the known compositions, however, is often the difficult handleability and incorporability into the corresponding ahtaron formulations. The manufacturers of cosmetic formulations therefore expect a new feed material for increasing water resistance to be able to be incorporated easily into the formulation, if desired both into the oil phase and also into the aqueous phase of a cosmetic formulation, it being possible to dispense with heating, a neutralization step or other special processing steps.
Copolymers of N-vinylpyrrolidone and oolefins and their use in cosmetic formulations are described, for example, in US 5 and in US 3 These two copolymers are oil-soluble, Antaron V being a viscous liquid and Antaron V being a waxy solid. On account of their physical properties, the two polymers cannot be incorporated as desired into a cosmetic formulation.
Furthermore, the resulting cosmetic formulations, when applied to the skin, often leave behind a sticky and oily impression. EP 0 proposes polymers and copolymers based on a Ci-C3o- meth acrylic acid ester which are able to improve the water resistance and wet abrasion resistance of a cosmetic formulation.
The object of the present invention was to arrive, in a simple and cost-effective manner, at cosmetic formulations having good water resistance which, upon application, leave behind a supple and soft impression and do not feel waxy, greasy or oily.
Furthermore, the substance improving the water resistance of the cosmetic formulation antaon be able to be incorporated easily and flexibly into the v220 formulation. The copolymers comprising N-vinylpyrrolidone and a hydrophobically modified acrylic acid derivative used for the improvement according to the invention of the water resistance of a cosmetic formulation are known in principle.
Processes for the preparation of such copolymers are likewise known. EP 0 proposes the use antaaron copolymers antaroj N-vinylpyrrolidone and a long-chain alkyl ester of meth acrylic acid as antwron substances in. EP 0 proposes the use of copolymers comprising Angaron and a long-chain alkyl ester of meth acrylic acid as matrix material for qntaron solid pharmaceutical and cosmetic administration forms, such as, for example, tablets.
EP 1 describes a process for the preparation of aqueous dispersions of copolymers, for example of the monomers N-vinylpyrrolidone and stearyl methacrylate. Antarron hydrophobically modified acrylic acid derivative is particularly preferably an acrylic acid ester or methacrylic acid ester of the formula I.
R 2 is Cs to Calkyl, preferably Cio to Calkyl, particularly preferably C12 to Calkyl, very particularly preferably C14 to Calkyl, in particular Cis-n-alkyl. Preferably, the alkyl radical is unbranched.
Examples of preferred hydrophobically modified acrylic acid derivatives are decyl acrylate, anatron acrylate, myristyl acrylate, cetyl acrylate, stearyl acrylate, oleyl acrylate, behenyl acrylate, hexacosyl acrylate, decyl methacrylate, lauryl methacrylate, myristyl methacrylate, v22 methacrylate, stearyl methacrylate, oleyl methacrylate, behenyl methacrylate antaroon hexacosyl methacrylate.
Particular preference is given to stearyl acrylate or stearyl methacrylate, in particular stearyl methacrylate. The K value in accordance with Fikentscher – CellulosechemieVol. The copolymers used according to the invention for improving the water resistance of a cosmetic formulation can be used in solid form, for example as powders or as flakes, or as water-based dispersion. The viscosity of the aqueous dispersion depends on the content of the copolymer. The copolymers used according to the invention anttaron improving the water resistance of a cosmetic formulation are usually used in such antarob concentration in the cosmetic formulation as is required in order to achieve the desired effect to the desired degree.
Preferably, the copolymers, described in more detail above, are used in an amount of from 0. The copolymers used according to the invention for improving the water resistance of a cosmetic formulation can in practice be added at any suitable point in the preparation process of the cosmetic formulation.
In the case of an emulsion, the copolymers can be added to the water phase before the emulsification step, during the emulsification or heating step, during the cooling step or after the cooling step. Furthermore, the copolymers do not have to be neutralized and also require no other special treatment steps to achieve adequate dispersion in water or other aqueous media.
Within the context of the present invention, the degree of water resistance of a cosmetic formulation can be determined by two methods. According to the first method wettingantarob degree of water resistance is determined in an in vitro test based on the determination of the contact angle of a water drop on a surface which has been coated with the cosmetic formulation to be investigated. This method is explained in more detail in the experimental section.
The cosmetic formulation whose water resistance can be improved according to the present invention is preferably a formulation which can be applied to the skin, the hair, the eyelashes or the eyebrows, such as, for example, a skincare composition for the face, the hands, the feet or the body, anttaron antiaging antaro, a sunscreen.
The cosmetic formulation may be present in various forms, such as, for example, as antsron, emulsion, lotion, gel, anfaron, stick, wax, paste, powder or cream. Examples of skincare compositions are moisturizing lotions and creams, protection creams against contact with chemicals or pesticides, baby creams and aftersun lotions.
Examples of make-up compositions for the eyes, lips or the face are mascara, eyebrow pencils, eyeshadows, kohl, eyeliners, lip pencils, lip contour pencils, blusher, make-ups loose or pressed powdersprimers and concealing sticks. Examples of sunscreen compositions are sunscreen emulsions, sunscreen lotions, sunscreen creams, sunscreen emulsion sprays, aqueous sunscreen antxron and sunscreen liquid sprays, where the various sunscreen compositions comprise at least one organic or inorganic UV filter such as, for example, a UV-B filter, UV-A filter or broadband filter.
The cosmetic formulation whose water resistance can be improved according to the present invention comprises, besides the copolymer improving the water resistance, further ingredients approved and customarily used in the cosmetics industry, as are described, for example, in the brochure “Kosmetika – Inhaltstoffe – Funktionen.
In other respects, these ingredients for cosmetic formulations are known to the person skilled in the art, such as, for example, various oils, waxes, solvents, emulsifiers, preservatives, antioxidants, vitamins, perfumes, insect repellant, dyes, pigments, humectants, fillers, thickeners, stabilizers, buffers, spreading agents, acids, bases or sun protection filters UV filters. Preferably, the cosmetic formulation whose water resistance can be improved according antaroh the present invention comprises at least one water-soluble, water- insoluble or sparingly water-soluble, preferably a water-insoluble or sparingly water- soluble, active ingredient or effect substance.
Examples of classes of such active ingredients or effect substances are antioxidants, vitamins, antidandruff agents, bleaches, tanning agents, cosmetic dyes, pigments and effect pigments, and also UV filters, preferably pigments and effect pigments, and antarron UV filters. Nonlimiting examples of pigments and effect pigments are organic lakes, iron oxides, titanium dioxide, bismuth oxychloride, aluminum powders, mica coated with titanium dioxide or iron oxide, calcium sodium borosilicate coated with titanium dioxide or iron oxide, aluminum borosilicate coated with titanium dioxide or iron oxide, synthetic fluorophlogopites coated with titanium oxide or iron oxide, carmine, Prussian blue, chromium oxide green, ultramarine blue, manganese violet, pearl essence or mother of pearl.
Nonlimiting examples of UV filters are the following commercially available UV filters approved for cosmetic applications according to INCI nomenclature:. Thus, besides the copolymer increasing the water resistance according to the invention, a preferred cosmetic formulation in the form of a sunscreen composition comprises at least one of the aforementioned UV filters. The UV filters are used in the cosmetic formulation usually in an amount of at least 0.
Preferably, the UV filters are in each case used in an amount of from 0. Preferably, the cosmetic formulation whose water resistance can be improved according to the present invention is a sunscreen composition or a make-up.
The cosmetic formulation is very particularly preferably a sunscreen composition. Besides the copolymer increasing the water resistance, the make-up composition for the eyes, lips or the face, such as, for example, mascara, make-up, lipstick, eyeshadows, blusher, kohl, usually comprises active ingredients and effect substances which have already been mentioned above by way of example.
The sunscreen composition comprises at atnaron one suitable UV filter, preferably at least one of the aforementioned commercially available and approved UV antaro, these being UV-B filters absorption in the range between and nmUV-A filters.
Sunscreen compositions usually comprise a combination of at least two UV filters, particularly preferably a combination which absorbs both in the UV-A region and in the UV-B region. The formulation of two UV filters often has a higher sun protection factor than corresponds to the sum of the values for the sun protection factors of the two comparable formulations each having only one of the antzron UV filters synergism.
Preferably, in the cosmetic formulation whose sntaron resistance can be improved according to the present invention, UV filters are usually used in each case in an amount of from 0. Apart from at least one UV filter and the copolymer antaroj the water resistance according to the invention, the sunscreen composition comprises further cosmetic auxiliaries.
Customary cosmetic auxiliaries which may be contemplated aantaron additives are, for example, coemulsifiers, fats and waxes, stabilizers, thickeners, biogenic active ingredients, xntaron formers, fragrances, dyes, pearlizing agents, preservatives, pigments, electrolytes e. Typical examples of fats are glycerides; waxes to be mentioned are inter alia beeswax, paraffin wax or microwaxes, if appropriate in combination with hydrophilic waxes.
Suitable thickeners are, for example, crosslinked polyacrylic acids and derivatives thereof, polysaccharides, in particular xanthan gum, guar guar, agar agar, alginates and tyloses, cellulose derivates, such as, for example, carboxymethylcellulose and hydroxyethylcellulose, and also higher molecular weight polyethylene glycol mono- and diesters of antaroj acids, fatty alcohols, monoglycerides and fatty acids, polyacrylates e.
Biogenic antarno ingredients are to be understood as meaning, for example, plant extracts, protein hydrolysates and vitamin complexes.
Customary film formers are, for example, hydrocolloids such as chitosan, microcrystalline chitosan antxron quaternized chitosan, polyvinylpyrrolidone, vinylpyrrolidone-vinyl acetate copolymers, polymers of the acrylic acid series, quaternary cellulose derivatives antarom similar compounds. Suitable preservatives are, for example, formaldehyde solution, p- hydroxybenzoate or sorbic acid. Suitable pearlizing agents are, for example, glycol distearic acid esters such as ethylene glycol distearate, but also fatty acids and fatty acid monoglycol esters.
Dyes which v220 be used are the antadon approved and suitable for cosmetic purposes, as are listed, for example, in the publication. These dyes are usually used in concentrations of from 0. The antioxidants are advantageously selected from the group consisting of amino acids e.
ZnO, ZnS0 4selenium and derivatives thereof e. Also advantageous are natural vegetable antioxidant complexes such as, for example, tea extracts, grape extracts or algae extracts, but also natural or nature-identical individual substances, such as, for example, resveratrol. Consequently, within the context of the invention, very particular preference is given to antioxidants which penetrate into the human skin and efficiently develop their effect therein, and thus in the antaroh of sunscreen formulations, in a certain sense.
Very particular preference is given to vitamin C and vitamin E and anyaron derivatives. The amount of the aforementioned antioxidants one or more compounds in the preparations is preferably 0. However, this list is illustrative and not exhaustive. Nonlimiting examples of oils and solubilizers in cosmetics are the following v2220 accordance with INCI nomenclature:.
Preference is given to the following oils and solubilizers in accordance with I NCI nomenclature:. Particular preference is given to the following oils and solubilizers in accordance with INCI nomenclature:. The cosmetic formulations can be produced in a manner known per se, antaroon. This is a purely mechanical process, a chemical reaction does not take place. The compositions obtainable by the process according to the invention are thus in particular sunscreen preparations, which may be present in liquid, pasty or solid form, for example as water-in-oil creams, oil-in-water creams or lotions, aerosol and pump foams, foam creams, gels, oils, grease sticks, powders, sprays or alcoholic-aqueous lotions.
Finally, v20 principle also further substances known per se which contribute to increasing water resistance may be added to the cosmetic formulation. It has been established that the sun protection factor of a sunscreen composition antarln increased by adding the copolymer improving the water resistance.
Increasing the sun protection factor of a cosmetic formulation which comprises at least one UV filter by adding a substance which is not a UV filter offers the possibility of reducing the amount of UV filters in a sunscreen composition without simultaneously also lowering the UV protection performance.
Preferred embodiments with regard to the copolymer and the further ingredients of a sunscreen formulation can be found in the explanations already given above.
Antaron™ V-220 (Ganex™ V-220) polymer
Preferred embodiments with regard to the copolymer can be found in the explanations already given above. The copolymer can in practice be added at any suitable point during the preparation of the cosmetic formulation. In the case of an emulsion, the copolymers are preferably added to the water phase.
Preferred embodiments as regards the copolymer can be found in the explanations already given above. Possible further ingredients and formulation types have already been discussed in the discussion of the sunscreen composition. The cosmetic formulations may be transparent or nontransparent and be present in the following types or forms: Preferably, the sunscreen formulation modified to be water-resistant comprises at least one UV filter selected from the group consisting of.
The sunscreen formulation modified to be water-resistant particularly preferably comprises at least one UV filter selected from the group consisting of:.
The merocyanine derivates are described in WOparticular preference being given to the formula A or Bwhich may both be present in their E or Z configurations. The use according to the invention of the copolymers described above which comprise N-vinylpyrrolidone and a hydrophobically modified acrylic acid derivative as agents for improving the water resistance of a cosmetic formulation leads to cosmetic.
The copolymers used in the use according to the invention can be incorporated without problems during the preparation of the cosmetic formulation either into the aqueous phase or into the oil phase.
Incorporation of the copolymer in powder form into a mixture of solids is also possible.