DE19631792A1 - Stable and kind to skin sun protectant compsn. - Google Patents

Abstract

Sun protecting compsn. (C) comprises oils (I), emulsifiers (II) and UV protective light filters (III). (I) is selected from: (a) a technical di/tri- glyceride mixt. obtd. by partial transesterification of refined, mainly satd. plant oils with a mixt. of glycerol and methyl esters of 6-10C fatty acid; and/or (b) Guerbet alcohols based on 6-12C fatty alcohol mixts. and/or their esters with 6-22C fatty acids. The total Zeidler spread of (I) is 300-1000 mm<2>/10 mins. Use of (I) in (C) is claimed per se.

Description

Field of the Invention

The invention relates to sunscreens containing selected oil bodies, emulsifiers and UV Sunscreen filters and the use of the oil body for the production of sunscreens.

State of the art

The pigmentation of normal skin leads to the formation of mela under the influence of solar radiation ninen. Irradiation with long-wave UV-A light causes the darkening of the epidermis already existing melanin body without recognizing damaging consequences, while the Short-wave UV-B radiation causes the formation of new melanins. Before the protective pigment, however can be formed, the skin is subject to exposure to unfiltered radiation, which depends on Duration of exposure to reddened skin (erythema), skin inflammation (sunburn) or even fire blow can lead. The stress on the organism associated with such skin lesions for example in connection with the release of histamines, can in addition to headache zen, weariness, fever, cardiovascular disorders and the like. For the consumer who to protect itself from the harmful aspects of solar radiation, the market offers a variety of products that are predominantly oils and milky emulsions that in addition to some care substances, especially contain UV light protection filters. There are overviews of this for example by P.Finkel in Parf.Kosm. 76, 432 (1995) and S.Schauder in Parf.Kosm. 76, 490 (1995).

However, there is still a need in the market for products with improved performance spectrum. Of particular interest is preparations that incorporate larger quantities  Allow UV light protection filters without phase separation or Se during storage dimentation takes place. A formulation made by the phase inversion temperature method, as described, for example, in European patent application EP-A1 0 667 144 (L'Oreal), tends to excrete the disper very quickly when incorporating larger amounts of titanium dioxide gated solid. Another problem is that many UV filters with the others Components of the formulation can interact, leading to a chemical reaction and also leads to a decrease in shelf life. After all, the consumer wants trans Parent formulations that have a high skin cosmetic ver have inertness. The complex object of the invention was thus to sunbathe to provide protective agents that are simultaneously characterized by special phase stability, bearings Characterize resistance and tolerance to sensitive skin.

Description of the invention

The invention relates to sunscreens containing oil bodies, emulsifiers and UV Light protection filters, which are characterized in that the oil bodies are selected from the group that is formed by

• (a) Technical di- / triglyceride mixtures which are obtained by refining, predominantly sown Vegetable oils with a mixture of glycerol and methyl esters of fatty acids with 6 to 10 Partially transesterified carbon atoms, and / or
• (b) Guerbet alcohols based on fatty alcohol mixtures with 6 to 12 carbon atoms and / or whose esters contain fatty acids with 6 to 22 carbon atoms, the spread of Oil components according to Zeidler in total is in the range of approx. 300 to 1000 mm² / 10 min.

Surprisingly, it has been found that the oil bodies selected are capable of emulsions Stabilize so that formulations are obtained that are not only an excellent stock Stability especially in the temperature range above 50 ° C, but also very fine are. At the same time, preparations with particularly high skin cosmetic tolerance receive. Particularly advantageous preparations are obtained if the emulsifiers are alkyl and / or Alkenyl glucosides or fatty acid N-alkyl polyhydroxyalkylamides alone or in combination with Uses fatty alcohols or polyol polyhydroxystearates.  

Di / triglyceride mixtures

The starting materials used to prepare the di / triglyceride mixtures are predominantly saturated Vegetable oils which have an iodine number in the range from 0.5 to 50 are considered. The vegetable oils conduct differ from fatty acids, which can have 6 to 22 carbon atoms, but the The focus of the C chain distribution is in the range of 12 to 18 carbon atoms. This means, that at least 80% of the fatty acids contained in the vegetable oils 12 to 22 and preferably 12 have up to 18 carbon atoms. Typical examples are palm oil, palm kernel oil, babassu oil and / or Coconut oil, the use of which is also particularly preferred. Vegetable oils, which after hardening, d. H. Lowering the iodine number, are olive oil, sunflower oil, rapeseed oil, peanut oil, cottonseed oil, Tea seed oil, chaulmoogra oil, coriander oil, linseed oil and meadowfoam oil. Suitable fatty acid methyl esters for the transesterification are methyl caproate, methyl capricate and in particular capryl acid methyl ester. Run in the reaction of the vegetable oils with the methyl esters and the glycerin different reactions side by side resulting in a complex mixture of di- and triglyce ride. For example, there is a partial transesterification of the vegetable oils with the methyl esters instead, d. H. at least some of the longer-chain fatty acids in vegetable oil will be shorter than those chain fatty acids of the methyl ester. The released longer-chain fatty acids can then in turn form esters with the free glycerol. It is also possible under these Be conditions a transesterification of the short-chain methyl esters with the glycerin. The complex reaction which for the sake of simplicity is referred to as "partial transesterification", usually runs at Tem temperatures in the range from 140 to 250 and preferably 210 to 230 ° C. Suitable as catalysts known substances for this purpose, such as zinc soaps, tin grinding, tin oxides, titanium acid esters, alkali metal hydroxides, carbonates or alcoholates and the like, which are present in amounts of 0.05 to 1 and preferably 0.1 to 0.5% by weight, based on the starting materials. It recommends the methanol released during the transesterification continuously from the reaction equilibrium remove and the catalyst after completion of the reaction, for example by adding bleach neutralize earth in order to separate unreacted methyl ester in the course of the distillative separation no catalytic reactions. It has also proven advantageous to use the vegetable oils that Fatty acid methyl ester and the glycerol in a molar ratio of 1: (2.5 to 3.5): (1.0 to 2.0) set, molar ratios of 1: (3.0 to 3.4): (1.3 to 1.6) being particularly preferred because a practically complete conversion results under these conditions. Products are received which have a monoglyceride content below 5% by weight and in which the weight ratio between di- and triglycerides is in the range from 1: 3 to 1: 6. Such di / triglyceride mixtures are characterized by optimal application properties.  

Guerbet alcohols and esters

For the purposes of the invention, Guerbet alcohols based on fatty alcohols having 6 to 12, preferably 8 to 10, carbon atoms are suitable as further selected oil bodies. Typical examples are Guerbet alcohols based on mixtures containing capron alcohol, caprylic alcohol, capric alcohol and / or lauryl alcohol. A typical fatty alcohol mixture within the specified C number range is the so-called C _8/10 pre-fatty alcohol, which is produced as a cut in the distillation of, for example, coconut, palm or palm kernel oil. A Guerbet alcohol based on a fatty alcohol with a C chain distribution of <5% by weight C₆, 50 to 60% by weight C₈, approx. 35 to 45% by weight C₁₀ and <2% by weight is particularly preferred C₁₂. The Guerbet alcohols mentioned can also be used in the form of their esters with fatty acids having 6 to 22, preferably 8 to 18 and in particular 12 to 14 carbon atoms. Typical examples are esters of Guerbet alcohols with capronic acid, caprylic acid, 2-ethylhexanoic acid, capric acid, isononanoic acid, pelargonic acid, lauric acid, isotridecanoic acid, myristic acid, palmitic acid, palmoleic acid, stearic acid, isostearic acid, oleic acid, elaidic acid, linoleic acid, linoleic acid, linoleic acid, linoleic acid, linoleic acid, linoleic acid, linoleic acid, linoleic acid, linoleic acid, linoleic acid, linoleic acid, linoleic acid, linoleic acid, linoleic acid, linoleic acid, linoleic acid, linoleic acid, linoleic acid, linoleic acid and linoleic acid, Gadolein acid, behenic acid and erucic acid and their technical mixtures, the z. B. in the pressure splitting of natural fats and oils, in the reduction of aldehydes from Roelen's oxosynthesis or the dimerization of unsaturated fatty acids. The Guerbet testers can have a degree of esterification of 100%, but partial esters are preferably used which have a degree of esterification in the range from 20 to 90 and in particular 40 to 70% of theory. Esters based on the above-mentioned Guerbet alcohols with technical C _8-18 coconut fatty acids which have a degree of esterification in the range from 40 to 70 are particularly preferred. Corresponding mixtures of completely esterified Guerbet testers and the corresponding Guerbet alcohols in a weight ratio of 10:90 to 90:10, preferably 30:70 to 70:30, can equally well be used. Guerbet connections of this type are the subject of German Patent DE-C 43 41 794 (Henkel).

More oil bodies

Other oil bodies include, for example, esters of linear C₆-C₂₀ fatty acids with linear C₆-C₂₀- Fatty alcohols, esters of branched C₆-C₁₃ carboxylic acids with linear C₆-C₂₀ fatty alcohols, esters of linear C₆-C₁₈ fatty acids with branched alcohols, especially 2-ethylhexanol, esters of linear and / or branched fatty acids with polyhydric alcohols (such as dimer diol or tri mertriol) and / or Guerbet alcohols, triglycerides based on C₆-C₁₀ fatty acids, esters of linear C₆-  C₂₀ fatty alcohols or Guerbet alcohols with aromatic acids, vegetable oils, branched primary Alcohols, substituted cyclohexanes, Guerbet carbonates, dialkyl ethers and / or aliphatic or naph hydrocarbons. Silicone compounds can also be used as oil bodies are used, for example dimethylpolysiloxanes, methylphenylpolysiloxanes, cyclic silicones as well as amino, fatty acid, alcohol, polyether, epoxy, fluorine and / or alkyl modified silicone compound that can be both liquid and resinous at room temperature. The oil body can in the agents according to the invention in amounts of 1 to 90, preferably 5 to 75 and in particular Special 10 to 50 wt .-% - based on the non-aqueous portion - may be included.

Alkyl and / or alkenyl oligoglycosides

Alkyl and alkenyl oligoglycosides which are considered as preferred emulsifiers are known are nonionic surfactants which follow the formula (I),

R¹O- [G] _p (I)

in the R¹ for an alkyl and / or alkenyl radical having 4 to 22 carbon atoms, G for a sugar radical with 5 or 6 carbon atoms and p represents numbers from 1 to 10. According to the incl current methods of preparative organic chemistry can be obtained. Representing the scope rich literature is referred to the documents EP-A1 0 301 298 and WO 90/03977.

The alkyl and / or alkenyl oligoglycosides can differ from aldoses or ketoses with 5 or 6 carbons derived atoms, preferably glucose. The preferred alkyl and / or alkenyl oligoglycosides are thus alkyl and / or alkenyl oligoglucosides. The index number p in the general formula (I) gives the degree of oligomerization (DP), d. H. the distribution of mono- and oligoglycosides and stands for a number between 1 and 10. While p must always be an integer in a given connection and here can assume the values p = 1 to 6, the value p is for a certain one Alkyl oligoglycoside is an analytically calculated value, usually a fraction represents. Alkyl and / or alkenyl oligoglycosides with a medium oligo are preferred Degree of merit p used from 1.1 to 3.0. From an application point of view, such alkyl and / or Alkenyl oligoglycosides are preferred, the degree of oligomerization of which is less than 1.7, and in particular is in particular between 1.2 and 1.4.  

The alkyl or alkenyl radical R 1 can be derived from primary alcohols having 4 to 11, preferably 8 to 10, carbon atoms. Typical examples are butanol, capro alcohol, caprylic alcohol, capric alcohol and undecyl alcohol and their technical mixtures, such as those obtained in the hydrogenation of technical fatty acid methyl esters or in the course of the hydrogenation of aldehydes from Roelen's oxosynthesis. Alkyl oligoglucosides of the chain length C₈- C₁₀ (DP = 1 to 3) are preferred, which occur as a preliminary in the distillative separation of technical C₈-C₁₈ coconut oil alcohol and can be contaminated with a proportion of less than 6% by weight of C₁₂ alcohol and alkyl oligoglucosides based on technical C _9/11 oxo alcohols (DP = 1 to 3). The alkyl or alkenyl radical R 1 can also be derived from primary alcohols having 12 to 22, preferably 12 to 14, carbon atoms. Typical examples are lauryl alcohol, myristyl alcohol, cetyl alcohol, palm oleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, elaidyl alcohol, petroselinyl alcohol, arachyl alcohol, gadoleyl alcohol, behenyl alcohol, erucyl alcohol, brassidyl alcohol and their technical mixtures described above, which can be obtained as described above. Alkyl oligoglucosides based on hardened C _12/14 coconut alcohol with a DP of 1 to 3 are preferred.

Fatty acid N-alkyl polyhydroxyalkylamides

Fatty acid N-alkylpolyhydroxyalkylamides, which are also suitable as preferred emulsifiers , represent nonionic surfactants which follow the formula (II),

in the R²CO for an aliphatic acyl radical having 6 to 22 carbon atoms, R³ for hydrogen, one Alkyl or hydroxyalkyl radical with 1 to 4 carbon atoms and [Z] for a linear or branched Polyhydroxyalkyl radical having 3 to 12 carbon atoms and 3 to 10 hydroxyl groups. Both Fatty acid N-alkylpolyhydroxyalkylamides are known substances that are commonly known by reductive amination of a reducing sugar with ammonia, an alkylamine or an alka nolamine and subsequent acylation with a fatty acid, a fatty acid alkyl ester or a fat Acid chloride can be obtained. With regard to the processes for their production, reference is made to the US Patents US 1,985,424, US 2,016,962 and US 2,703,798 and the international patent application Reference WO 92/06984 referenced. An overview of this topic by H. Kelkenberg can be found in Tens.Surf.Deterg. 25, 8 (1988).  

The fatty acid N-alkylpolyhydroxyalkylamides are preferably derived from reducing sugars with 5 or 6 carbon atoms, especially from glucose. The preferred fatty acid N-alkyl polyhydroxyalkylamides are therefore fatty acid N-alkylglucamides as represented by the formula (III) are reproduced:

Preferably used as fatty acid N-alkylpolyhydroxyalkylamides are glucamides of the formula (III) in which R³ is hydrogen or an alkyl group and R²CO is the acyl radical of caproic acid, caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, palmoleic acid, stearic acid, Isostearic acid, oleic acid, elaidic acid, petroselinic acid, linoleic acid, linolenic acid, arachic acid, gadoleic acid, behenic acid or erucic acid or their technical mixtures. Fatty acid N-alkyl-glucamides of the formula (III) which are obtained by reductive amination of glucose with methylamine and subsequent acylation with lauric acid or C _12/14 coconut fatty acid or a corresponding derivative are particularly preferred. Furthermore, the polyhydroxyalkylamides can also be derived from maltose and palatinose.

Fatty alcohols

Among fatty alcohols used together with the glucosides or glucamides as emulsifiers primary aliphatic alcohols of the formula (IV) are to be understood,

R⁴OH (IV)

in the R⁴ for an aliphatic, linear or branched, optionally hydroxy-substituted Hydrocarbon radical with 6 to 54 carbon atoms and 0 and / or 1, 2 or 3 double bonds stands. Typical examples are capronic alcohol, caprylic alcohol, 2-ethylhexyl alcohol, capric alcohol, Lauryl alcohol, isotridecyl alcohol, myristyl alcohol, cetyl alcohol, isocetyl alcohol, palmoleyl alcohol, stea ryl alcohol, isostearyl alcohol, oleyl alcohol, elaidyl alcohol, petroselinyl alcohol, linolyl alcohol, lino  lenyl alcohol, elaeostearyl alcohol, ricinol alcohol, hydroxystearyl alcohol, dihydroxystearyl alcohol, macaw chyl alcohol, gadoleyl alcohol, behenyl alcohol, erucyl alcohol and brassidyl alcohol and their techni cal mixtures z. B. in the high pressure hydrogenation of technical methyl esters based on Fats and oils or aldehydes from Roelen's oxosynthesis and as a monomer fraction the dimerization of unsaturated fatty alcohols. Guerbet alcohols are further examples based on fatty alcohols with 6 to 18 carbons as well as technical dimer diols and trimer triols 18 to 36 or 18 to 54 carbon atoms resulting from the oligomerization and subsequent hydrie unsaturated fatty acids. Technical fatty alcohols with 16 to 18 carbons are preferred Substance atoms such as cetyl stearyl alcohol, isostearyl alcohol and Guerbet alcohols ent speaking chain length. For the purposes of the invention, it is particularly advantageous to use mixtures of alkyl Use oligoglucosides and fatty alcohols that have identical alkyl radicals, for example wise mixtures of cetearyl oligoglucosides and cetearyl alcohol, isostearyl oligoglucosides and Isostearyl alcohol or Guerbet alkyl oligoglucosides and the corresponding Guerbet alcohols.

Polyol polyhydroxystearates

Polyol polyhydroxystearates, which are used as emulsifiers alone or preferably in combination with the Glucosides can be used are esters of polyols and polyhydroxystearic acids. The polyol component can be, for example, glycerol, ethylene glycol, diethylene glycol, Propylene glycol, polyglycerol, trimethylolethane, trimethylolpropane, trimethylolbutane, pentaerythritol, Dipentaerythritol, methyl and butyl glucoside, sorbitol, mannitol, glucose, sucrose or glucamine deduce. Corresponding substances are, for example, from GB-A 15 24 782 or EP-A 0 000 424 known. The substances of component (b) are preferably Polyglycerol polyhydroxystearates obtained by mixing poly-12-hydroxystearic acid with an egg degree of condensation in the range of 2 to 20, preferably 2 to 10, with a polyglycerol mixture esterified in a manner known per se; the preferred ranges are given in brackets. The The polyol polyhydroxystearates can be prepared in a manner known per se. In the case of Polyglycerol polyhydroxystearate is preferably first the polyglycerol and then the Polyhydroxystearic acid produced and finally both esterified. In a special one Embodiments of the invention are mixtures of hydroxystearic acid and ricinoleic acid or technical castor oil fatty acid, which consists of about 90 wt .-% of ricinoleic acid, in the weight ratio 99: 1 to 1:99 and preferably 75: 25 to 10: 90. In the same way it is possible to Condensate acids individually and then mix the condensates. At the after following condensation of the polyol component, for example the polyglycerol with the polyhy  droxystearic acid or the mixtures with polyricinoleic acid, a complex mixture is more homologous Polyester formed. The proportions of mono-, di-, tri- and oligoesters in the polyol polyhydroxystearates depends on the conditions of use of the starting compounds, as in the German Patent application DE-A1 44 20 516 (Henkel) is described. The polyol polyhydroxystearates can NEN in turn used alone or in a mixture with polyols, preferably glycerol will.

UV light protection filter

UV light protection filters are organic substances that are capable of ultraviolet Absorb rays and the absorbed energy in the form of longer-wave radiation, e.g. B. heat to deliver again. An overview of this can be found, for example, in Parf.Kosm. 74, 485 (1993). Typical examples are 4-aminobenzoic acid and its esters and derivatives (e.g. 2-ethylhexyl-p-di methylaminobenzoate or p-dimethylaminobenzoic acid octyl ester), methoxycinnamic acid and their deri vate (e.g. 2-ethylhexyl 4-methoxycinnamate), benzophenones (e.g. oxybenzone, 2-hydroxy-4-me thoxy-benzophenone), dibenzoylmethane, salicylate ester, 2-phenylbenzimadozole-5-sulfonic acid, 1- (4- tert-Butylphenyl) -3- (4'-methoxyphenyl) propane-1,3-dione, 3- (4'-methyl) benzylidene-bornan-2-one, methyl benzylidene camphor and the like.

The agents according to the invention can furthermore also be finely dispersed metal oxides as light protection filters or contain salts. Typical examples are titanium dioxide, zinc oxide, iron oxide, aluminum oxide, cerium oxide, Zirconium oxide, silicates (talc) and barium sulfate. The particles should have an average diameter of less than 100 nm, preferably between 5 and 50 nm and in particular between 15 and 30 nm exhibit. They can have a spherical shape, but such particles can also are used that are ellipsoidal or in some other way dependent on the spherical shape have softening shape.

In addition to the two aforementioned groups of primary light stabilizers, the inventive Agents also contain secondary light stabilizers of the antioxidant type that make up the photoche Interrupt the mixed reaction chain, which is triggered when UV radiation penetrates the skin. Typical examples are superoxide dismutase, tocopherols (vitamin E) and ascorbic acid (Vitamin C).  

The proportion of light stabilizers in the compositions according to the invention is based on the non-aqueous proportion - Usually at 10 to 90, preferably 25 to 75 and in particular 40 to 60 % By weight. The agents according to the invention as such can be 1 to 95, preferably 5 to 80 and in particular contain special 10 to 60 wt .-% water. Are organic compounds as light stabilizers used, their co-emulsifying properties can be used in the preparation of the preparations be used.

Industrial applicability

The agents according to the invention are notable for high phase stability and particularly advantageous more skin-cosmetic tolerance. Typical preparations have the following together setting:

• (a) 1 to 30, preferably 5 to 20% by weight oil body,
• (b) 1 to 20, preferably 2 to 10 wt .-% emulsifiers and
• (c) 1 to 20, preferably 2 to 10% by weight UV light protection filter,

with the proviso that the amounts are 100% by weight with water.

As additional ingredients, they can be added in minor amounts with the other ingredients contain compatible anionic surfactants and / or nonionic surfactants. Typical examples of anionic surfactants are soaps, alkyl benzene sulfonates, alkane sulfonates, olefin sulfonates, alkyl ether sulfonates, glycerol ethers sulfonates, α-methyl ester sulfonates, sulfo fatty acids, alkyl sulfates, fatty alcohol ether sulfates, glycerin ether sulfates, hydroxy mixed ether sulfates, monoglyceride (ether) sulfates, fatty acid amide (ether) sulfates, mono- and Dialkyl sulfosuccinates, mono- and dialkyl sulfosuccinamates, sulfotriglycerides, amide soaps, ethers carboxylic acids and their salts, fatty acid isethionates, fatty acid sarcosinates, fatty acid taurides, N-acylamino Acids such as acyl lactylates, acyl tartrates, acyl glutamates and acyl aspartates, alkyl oligoglucoside sulfates, protein fatty acid condensates (especially vegetable products based on wheat) and alkyl (ether) phosphates. If the anionic surfactants contain polyglycol ether chains, these have a conventional, but preferably a narrowed homolog distribution. Alkyl ether sulfates and / or alkyl (ether) phosphates are preferably used. Typical examples for nonionic surfactants are fatty alcohol polyglycol ethers, alkylphenol polyglycol ethers, fatty acid poly glycol esters, fatty acid amide polyglycol ethers, fatty amine polyglycol ethers, alkoxylated triglycerides, mixed ethers or mixed formals, optionally partially oxidized alk (en) yl oligoglycosides, fatty acid N-alkylglu camides, protein hydrolyzates (especially vegetable products based on wheat), polyol fatty acid esters,  Sugar esters, sorbitan esters, polysorbates and amine oxides. If the nonionic surfactants Poly contain glycol ether chains, these can be a conventional, but preferably a restricted one Have homolog distribution.

The agents according to the invention can furthermore, as further auxiliaries and additives, co-emulsifiers, Superfatting agents, stabilizers, waxes, consistency enhancers, thickeners, cation polymers, contain biogenic agents, preservatives, hydrotropes, solubilizers, colors and fragrances.

Non-ionic surfactants, for example, come from at least one of the following as co-emulsifiers the groups in question:

• (b1) adducts of 2 to 30 moles of ethylene oxide and / or 0 to 5 moles of propylene oxide with linear Fatty alcohols with 8 to 22 carbon atoms, on fatty acids with 12 to 22 carbon atoms and on alkylphenols with 8 to 15 carbon atoms in the alkyl group;
• (b2) C _12/18 fatty acid _monoesters and diesters of adducts of 1 to 30 moles of ethylene oxide with glycerol;
• (b3) Glycerol mono- and diesters and sorbitan mono- and diesters of saturated and unsaturated Fatty acids with 6 to 22 carbon atoms and their ethylene oxide addition products;
• (b4) adducts of 15 to 60 moles of ethylene oxide with castor oil and / or hardened castor oil;
• (b5) adducts of 2 to 15 moles of ethylene oxide with castor oil and / or hardened castor oil;
• (b6) _{partial esters} based on linear, branched, unsaturated or saturated C _12/22 fatty acids, ricinoleic acid and 12-hydroxystearic acid and glycerol, polyglycerol, pentaerythritol, dipentaerythritol, sugar alcohols (e.g. sorbitol) and polyglucosides (e.g. Cellulose);
• (b7) trialkyl phosphates;
• (b8) wool wax alcohols;
• (b9) polysiloxane-polyalkyl-polyether copolymers or corresponding derivatives;
• (b10) mixed esters of pentaerythritol, fatty acids, citric acid and fatty alcohol according to DE-PS 11 65 574 and / or mixed esters of fatty acids with 8 to 22 carbon atoms, methyl glucose and Polyols as well
• (b11) polyalkylene glycols.

The adducts of ethylene oxide and / or of propylene oxide with fatty alcohols, fatty acids, alkylphenols, glycerol mono- and diesters as well as sorbitan mono- and diesters of fatty acids or with castor oil are known, commercially available products. These are homologous mixtures of which average degree of alkoxylation corresponds to the ratio of the amounts of ethylene oxide and / or propylene oxide and substrate with which the addition reaction is carried out. C _12/18 fatty acid _monoesters and diesters of adducts of ethylene oxide with glycerol are known from DE-PS 20 24 051 as refatting agents for cosmetic preparations.

Zwitterionic surfactants can also be used as emulsifiers. Zwitterionic surfactants are surface-active compounds that contain at least one quaternary ammonium group and at least one carboxylate and one sulfonate group in the molecule. Particularly suitable zwitterionic surfactants are the so-called betaines such as the N-alkyl-N, N -dimethylammonium glycinate, for example coconut alkyldimethylammonium glycinate, N-acylamino propyl-N, N-dimethylammonium glycinate, for example coconut acylaminopropyldimethylammonium glycinate, and 2-alkyl-3-carboxylm 3-hydroxyethylimidazolines each having 8 to 18 carbon atoms in the alkyl or acyl group and the cocoacylaminoethylhydroxyethylcarboxymethylglycinate. The fatty acid amide derivative known under the CTFA name Cocamidopropy / Belaine is particularly preferred. Suitable emulsifiers are ampholytic surfactants. Ampholytic surfactants are surface-active compounds which, in addition to a C _8/18 alkyl or acyl group, contain at least one free amino group and at least one -COOH or -SO₃H group in the molecule and are capable of forming internal salts. Examples of suitable ampholytic surfactants are N-alkylglycine, N-alkylpropionic acid, N-alkylaminobutyric acid, N-alkyliminodipropionic acid, N-hydroxyethyl-N-alkylamidopropylglycine, N-alkyltaurine, N-alkyl sarcosine, 2-alkyl aminopropionic acid and alkyl amino acetic acid each with about 8 up to 18 carbon atoms in the alkyl group. Particularly preferred ampholytic surfactants are N-cocoalkylaminopropionate, cocoacylaminoethylaminopropionate and C _12/18 acylsarcosine. In addition to the ampholytic emulsifiers, quaternary emulsifiers are also suitable, those of the esterquat type, preferably methyl-quaternized difatty acid triethanolamine ester salts, being particularly preferred.

Substances such as lanolin and lecithin as well as polyethoxylated or acylated lanolin and lecithin derivatives, polyol fatty acid esters, monoglycerides and Fatty acid alkanolamides are used, the latter at the same time as foam stabilizers serve. The main consistency agents are fatty alcohols with 12 to 22 and preferably 16 up to 18 carbon atoms and also partial glycerides. A combination is preferred of these substances with alkyl oligoglucosides and / or fatty acid N-methylglucamides of the same chain length and / or polyglycene poly-12-hydroxystearates. Suitable thickeners are, for example Polysaccharides, especially xanthan gum, guar guar, agar agar, alginates and tyloses, carboxy methyl cellulose and hydroxyethyl cellulose, also higher molecular weight polyethylene glycol mono- and di esters of fatty acids, polyacrylates, polyvinyl alcohol and polyvinyl pyrrolidone, surfactants such as  for example ethoxylated fatty acid glycerides, esters of fatty acids with polyols such as Pentaerythritol or trimethylolpropane, fatty alcohol ethoxylates with a narrow homolog distribution or Alkyl oligoglucosides as well as electrolytes such as table salt and ammonium chloride.

Suitable cationic polymers are, for example, cationic cellulose derivatives, cationic Starch, copolymers of diallylammonium salts and acrylamides, quaternized vinyl pyrrolidone / vinyl imidazole polymers such as B. Luviquat® (BASF AG, Ludwigshafen / FRG), condensation products from Polyglycols and amines, quaternized collagen polypeptides such as lauryldimonium hydroxypropyl hydrolyzed collagen (Lamequat®L, Grünau GmbH), quaternized wheat polypeptides, Polyethyleneimine, cationic silicone polymers such as B. Amidomethicone or Dow Corning, Dow Cor ning Co./US, copolymers of adipic acid and dimethylaminohydroxypropyldiethylenetrimamine (Cartaretine®, Sandoz / CH), polyaminopolyamides such as B. described in FR-A 22 52 840 and their crosslinked water-soluble polymers, cationic chitin derivatives such as quaternized Chitosan, optionally microcrystalline, condensation products from dihaloalkylene such. B. Dibromobutane with bisdialkylamines such as. B. bis-dimethylamino-1,3-propane, cationic guar gum such as e.g. B. Jaguar® CBS, Jaguar® C-17, Jaguar® C-16 from Celanese / US, quaternized ammonium salt Polymers such as B. Mirapol® A-15, Mirapol® AD-1, Mirapol® AZ-1 from Miranol / US.

Typical examples of fats are glycerides. a. Beeswax, paraffin wax or micro waxes optionally in combination with hydrophilic waxes, e.g. B. Cetylstearyl alcohol or partial glycerides in question. Mono and difatty acids in particular can be used as pearlescent waxes esters of polyalkylene glycols, partial glycerides or esters of fatty alcohols with polyvalent carbon acids or hydroxycarboxylic acids are used. Metal salts of Fatty acids such as As magnesium, aluminum and / or zinc stearate can be used. Among biogenic Active ingredients are, for example, bisabolol, allantoin, phytantriol, panthenol, AHA acids, plant sex to understand tracts and vitamin complexes. To improve the flow behavior can also Hydrotropes such as ethanol, isopropyl alcohol, propylene glycol or glucose are used will. Suitable preservatives are, for example, phenoxyethanol, formaldehyde solution, Parabens, pentanediol or sorbic acid. As dyes can be used for cosmetic purposes Suitable and approved substances are used, such as those in the publication "Cosmetic Dyes" of the Dye Commission of the German Research Foundation, Verlag Chemie, Weinheim, 1984, pp. 81-106 are compiled. These dyes are used Licher in concentrations of 0.001 to 0.1 wt .-%, based on the entire mixture set.  

The total proportion of auxiliaries and additives can be 1 to 50, preferably 5 to 40% by weight on the middle - amount.

Another object of the invention finally relates to the use of the invention Oil body for the manufacture of sunscreens.  

Examples

The sun protection emulsions R1 to R8 were produced in a hot process. For this, the Oil body together with the oil-soluble or oil-dispersible UV light protection filters and the emulsions gate emulsified at 70 to 80 ° C in water of the same temperature; water-soluble or water-disperser UV filters that could be used were introduced together with the aqueous phase. The assessment of the Sta bility took place after storage for 10 days at 50 ° C. Here (+) = no Pha separation / sedimentation and (-) phase separation / turbidity. The formulas R1 to R6 are invented According to the recipes R7 and R8 are used for comparison. The results are shown in Table 1 summarized.

Table 1

O / W sun protection emulsions (quantities as% by weight)

Claims (11)

1. Sunscreen containing oil bodies, emulsifiers and UV light protection filters, characterized in that the oil bodies are selected from the group that is formed by

• (a) Technical di- / triglyceride mixtures which are obtained by transesterifying refined, predominantly saturated vegetable oils with a mixture of glycerol and methyl esters of fatty acids having 6 to 10 carbon atoms, and / or
• (b) Guerbet alcohols based on fatty alcohol mixtures with 6 to 12 carbon atoms and / or their esters with fatty acids with 6 to 22 carbon atoms, the spreading of the oil components according to Zeidler in the total range of about 300 to 1000 mm² / 10 min .

2. Composition according to claim 1, characterized in that they contain further oil bodies that are out are selected from the group formed by esters of linear C₆-C₂₀ fatty acids with li nearen C₆-C₂₀ fatty alcohols, esters of branched C₆-C₁₃ carboxylic acids with linear C₆-C₂₀- Fatty alcohols, esters of linear C₆-C₁₈ fatty acids with branched alcohols, esters of linear and / or branched fatty acids with polyhydric alcohols and / or Guer beta alcohols, triglycerides based on C₆-C₁₀ fatty acids, esters of linear C₆-C₂₀ fatty alcohols or Guerbet alcohols with aromatic acids, vegetable oils, branched primary alcohol len, substituted cyclohexanes, Guerbet carbonates, dialkyl ethers and / or aliphatic or naphthenic hydrocarbons and silicone compounds. 3. Composition according to claims 1 and 2, characterized in that they contain as emulsifiers alkyl and alkenyl oligoglycosides of the formula (I), R¹O- [G] _p (I) in the R¹ for an alkyl and / or alkenyl radical with 4 up to 22 carbon atoms, G stands for a sugar residue with 5 or 6 carbon atoms and p stands for numbers from 1 to 10. 4. Composition according to claims 1 to 3, characterized in that they contain fatty acid-N-alkylpolyhydroxyalkylamides of the formula (II) as emulsifiers, in which R²CO stands for an aliphatic acyl radical with 6 to 22 carbon atoms, R³ for hydrogen, an alkyl or hydroxyalkyl radical with 1 to 4 carbon atoms and [Z] for a linear or branched polyhydroxyalkyl radical with 3 to 12 carbon atoms and 3 to 10 hydroxyl groups. 5. Composition according to claims 1 to 4, characterized in that they are emulsifiers Contain fatty alcohols of the formula (IV), R⁴OH (IV) in the R⁴ for an aliphatic, linear or branched, optionally hydroxy-substituted Hydrocarbon radical with 6 to 54 carbon atoms and 0 and / or 1, 2 or 3 double bindings stands. 6. Composition according to claims 1 to 5, characterized in that they are polyol as emulsifiers contain polyhydroxystearates. 7. Composition according to claims 1 to 6, characterized in that they ent UV light protection filter hold that are selected from the group that is formed by 4-aminobenzoic acid as well their esters and derivatives, methoxycinnamic acid and their derivatives, benzophenones, diben zoylmethanes, salicylate esters, 2-phenylbenzimadozole-5-sulfonic acid, 1- (4-tert-butylphenyl) -3- (4'-meth oxyphenyl) propane-1,3-dione, 3- (4'-methyl) benzylidene-bornan-2-one and methylbenzylidene cam pher. 8. Composition according to claims 1 to 7, characterized in that they are used as UV light protection filters contain finely dispersed metal oxides or salts which are selected from the group formed is made of titanium oxide, zinc oxide, iron oxide, aluminum oxide, cerium oxide, zirconium oxide, silicates (talc) and barium sulfate.   9. Composition according to claims 1 to 8, characterized in that they are used as UV light stabilizers Contain antioxidants selected from the group consisting of superoxide Dismutase, tocopherols (vitamin E) and ascorbic acid (vitamin C). 10. Composition according to claims 1 to 9, characterized in that they are further anionic and / or contain nonionic surfactants. 11. Use of oil bodies according to claim 1 for the production of sunscreens.