EP1033967A2

EP1033967A2 - Pigment dispersions

Info

Publication number: EP1033967A2
Application number: EP98964412A
Authority: EP
Inventors: Armin Wadle
Original assignee: Cognis Deutschland GmbH and Co KG
Current assignee: BASF Personal Care and Nutrition GmbH
Priority date: 1997-11-27
Filing date: 1998-11-19
Publication date: 2000-09-13
Also published as: DE19752564A1; JP2001524504A; WO1999027896A2; WO1999027896A3; AU1962699A

Abstract

The invention relates to pigment dispersions containing the following: (a) ester oils and (b) dispersant mixtures consisting of (b1) alkyl- and/or alkenyloligoglycosides and (b2) polyolpoly-12-hydroxystearates. The inventive preparations are especially suitable for producing sun protection products and decorative cosmetic products.

Description

Pigment dispersions

Field of the Invention

The invention relates to pigment dispersions containing selected oil bodies and dispersants and to the use of the dispersions for the production of cosmetic preparations.

State of the art

Pigments are used in the field of cosmetics in very different fields of application. Primary light protection filters, such as titanium dioxide or zinc oxide, serve in finely dispersed form to convert harmful UV radiation into heat radiation and thus serve to protect the sun [cf. Soap-fat-oil-waxes, 113, 765 (1987)]. Color pigments, such as iron oxides, bismuth oxychloride or kaolin, are used in the field of decorative cosmetics and for the production of lipsticks, make-up or eyeshadows (cf. Umbach (ed.), "Kosmetik", Thieme-Verlag, Stuttgart, 1995, Pp. 319-323) To produce these preparations, which are very different in their later use, the cosmetic chemist starts from the same premixes, which are more or less concentrated dispersions of the pigments in cosmetic oils Oil components are practically insoluble in the premixes which contain dispersants which prevent sedimentation of the solids, but in practice it is observed that the dispersion is unsatisfactory, since the dispersions often show a tendency to sediment gradually, particularly with long storage times and higher storage temperatures Another problem is that the fine particles it leaves the crystals and thus the visual appearance of both the dispersions and the final formulations to be desired.

Accordingly, the object of the present invention was to provide new pigment dispersions which at the same time are particularly finely divided, homogeneously distributed and are therefore more stable in storage than the preparations of the prior art. Description of the invention

The invention relates to pigment dispersions containing

(a) ester oils and

(b) dispersant mixtures consisting of (b1) alkyl and / or alkenyl oligoglycosides and (b2) polyol poly-12-hydroxystearates.

Surprisingly, it was found that the combination of selected oil bodies and selected dispersants enables pigment dispersions to be produced which are extremely finely divided and particularly stable in storage.

Ester oils

The oil bodies of the ester oil type include, for example, esters of linear C 6 -C 10 fatty acids with linear C 6 C 22 fatty alcohols, esters of branched C 6 C 13 carboxylic acids with linear C 6 C 22 fatty alcohols, esters of linear C 6 C 22 fatty acids with branched alcohols, in particular 2-ethylhexanol, esters of linear and / or branched fatty acids with polyhydric alcohols (such as propylene glycol, dimer diol or trimer triol) and / or Guerbet alcohols, triglycerides based on C-6-Ciö fatty acids, liquid mono- / di - / Triglyceride mixtures based on Cβ-Ciβ-fatty acids, esters of C6-C22-fatty alcohols and / or Guerbet alcohols with aromatic carboxylic acids, especially benzoic acid, esters of C2-Ci2-dicarboxylic acids with linear or branched alcohols with 1 to 22 carbon atoms or Polyols with 2 to 10 carbon atoms and 2 to 6 hydroxyl groups, vegetable oils, linear C6-C22 fatty alcohol carbonates, Guerbet carbonates, esters of benzoic acid with linear and nd / or branched C6-C22 alcohols (e.g. Finsolv® TN) and / or ring opening products of epoxidized fatty acid esters with polyols.

Alkyl and / or alkenyl ologoglycosides

The alkyl and alkenyl oligoglycosides, which are the dispersant component (b1), are known nonionic surfactants which follow the formula (I)

in which R ^{1 is} an alkyl and / or alkenyl radical having 4 to 22 carbon atoms, G is a sugar radical having 5 or 6 carbon atoms and p is a number from 1 to 10. You can use the current methods of preparative organic chemistry can be obtained. Representative of the extensive literature here is the review by Biermann et al. in Starch /force 45, 281 (1993), B.Salka in Cosm.Toil. 108, 89 (1993) and J.Kahre et al. in SÖFW-Journal Issue 8, 598 (1995).

The alkyl and / or alkenyl oligoglycosides can be derived from aldoses or ketoses with 5 or 6 carbon 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) indicates the degree of oligomerization (DP), ie 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 compound and especially here can assume the values p = 1 to 6, the value p for a certain alkyl oligoglycoside is an analytically determined arithmetic parameter, which usually represents a fractional number. Alkyl and / or alkenyl oligoglycosides with an average degree of oligomerization p of 1.1 to 3.0 are preferably used. From an application point of view, those alkyl and / or alkenyl oligoglycosides are preferred whose degree of oligomerization is less than 1.7 and 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 are obtained, for example, 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 chain length Cβ-Cio (DP = 1 to 3) are preferred, which are obtained as a preliminary step in the separation of technical Cβ-Ciβ coconut fatty alcohol by distillation and are contaminated with a proportion of less than 6% by weight of C12 alcohol can as well as alkyl oligoglucosides based on technical Cg / n-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, palmoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, elaidyl alcohol, petroselinyl alcohol, arachyl alcohol, gadoleyl alcohol, behenyl alcohol, erucyl alcohol, brassidyl alcohol and the technical mixtures described above, which can be obtained as well as their technical mixtures. Alkyl oligoglucosides based on hydrogenated Ci2 / i4 coconut alcohol with a DP of 1 to 3 are preferred.

Polyol polv-12 hydroxystearate

The polyol poly-12-hydroxystearates are known substances, for example from Henkel KGaA, Düsseldorf / FRG under the brands "Dehymuls® PGPH" or "Eumulgin® VL 75" (mixture with Coco Glucosides in a weight ratio of 1: 1) to be expelled. In this context, reference is also made to the international patent application WO 95/34528 (Henkel). The The polyol component of the dispersants can be derived from substances which have at least two, preferably 3 to 12 and in particular 3 to 8 hydroxyl groups and 2 to 12 carbon atoms. Typical examples are:

(a) glycerin and polyglycerin;

(b) alkylene glycols, such as ethylene glycol, diethylene glycol, propylene glycol;

(c) methyl compounds, such as in particular trimethylolethane, trimethylolpropane, trimethylolbutane, pentaerythritol and dipentaerythritol;

(d) alkyl oligoglucosides with 1 to 22, preferably 1 to 8 and in particular 1 to 4 carbons in the alkyl radical, such as methyl and butyl glucoside;

(e) sugar alcohols having 5 to 12 carbon atoms, such as sorbitol or mannitol;

(f) sugars with 5 to 12 carbon atoms, such as glucose or sucrose;

(g) aminosugars such as glucamine.

Among the dispersants to be used according to the invention, reaction products based on polyglycerol are of particular importance because of their excellent performance properties. It has proven particularly advantageous to use selected polyglycerols which have the following homolog distribution (the preferred ranges are given in brackets):

Glycerols 5 to 35 (15 to 30) wt%

Diglycerols 15 to 40 (20 to 32) wt%

Triglycerols 10 to 35 (15 to 25)% by weight

Tetraglycerols 5 to 20 (8 to 15) wt%

Pentaglycerols 2 to 10 (3 to 8) wt%

Oligoglycerols ad 100% by weight

The dispersant mixtures can contain components (b1) and (b2) in a weight ratio of 10:90 to 90:10, preferably 25:75 to 75:25 and in particular 40:60 to 60:40. It is particularly preferred to use a mixture of the two components in a weight ratio of 50:50, which is commercially available under the name Eumulgin® VL 75.

Finely dispersed metal oxides and salts

The dispersions according to the invention can contain finely dispersed metal oxides or salts as insoluble sun protection pigments, such as, for example, titanium dioxide, zinc oxide, iron oxide, aluminum oxide, cerium oxide, zirconium oxide, silicates (talc), barium sulfate and zinc stearate. In addition, everyone comes colored pigments into consideration, which are usually used for the production of decorative cosmetics, so. eg iron oxides, bismuth oxychloride, kaolin, talc and the like. 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. They can have a spherical shape, but it is also possible to use particles which have an ellipsoidal shape or shape which differs from the spherical shape in some other way.

Piqment dispersions

In a preferred embodiment of the invention, the dispersions

(a) 70 to 95, preferably 80 to 93% by weight of ester oils,

(b) 1 to 10, preferably 3 to 8 wt .-% dispersant mixture and

(c) 0.1 to 5, preferably 1 to 3% by weight of pigments

included, with the proviso that the amounts add up to 100 wt .-%. The dispersions can be prepared in a manner known per se, for example by mixing the component in the heat and then cooling under shear.

Industrial applicability

The pigment dispersions according to the invention are notable for a particularly fine particle size and storage stability. Two further objects of the invention therefore relate to their use for the production of sunscreens, such as oils or lotions, and for the production of products of decorative cosmetics, such as make-up, powder, blush, lipsticks, eyeliner pencils, eye shadows, nail polishes and the like, in which the dispersions can be contained in amounts of 1 to 50, preferably 5 to 25,% by weight.

The dispersions can contain further auxiliaries and additives suitable for the production of sunscreens or decorative cosmetics, such as, for example, mild surfactants, co-dispersants, superfatting agents, pearlescent waxes, stabilizers, consistency enhancers, thickeners, cationic polymers, silicone compounds, biogenic active ingredients, film formers, preservatives, Contain hydrotropes, solubilizers, UV light protection filters, insect repellents, self-tanners, perfume oils, dyes and the like. Typical examples of suitable mild, ie particularly skin-compatible surfactants are fatty alcohol polyglycol ether sulfates, monoglyceride sulfates, mono- and / or dialkyl sulfosuccinates, fatty acid taurides, fatty acid glutamates, ether carboxylic acids, alkyl oligoglucosides, fatty acid glucamides, alkylamidobetaines and / or protein fatty acid condensates, the latter preferably based on wheat proteins .

Non-ionic surfactants from at least one of the following groups, for example, are suitable as co-dispersants:

(1) 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 C atoms, with fatty acids with 12 to 22 C atoms and with alkylphenols with 8 to 15 C atoms in the Alkyl group;

(2) Ci2 / i8 fatty acid monoesters and diesters of adducts of 1 to 30 moles of ethylene oxide with glycerol;

(3) glycerol monoesters and diesters and sorbitan monoesters and diesters of saturated and unsaturated fatty acids having 6 to 22 carbon atoms and their ethylene oxide addition products;

(4) adducts of 15 to 60 moles of ethylene oxide with castor oil and / or hardened castor oil;

(5) adducts of 2 to 15 moles of ethylene oxide with castor oil and / or hardened castor oil;

(6) partial esters based on linear, branched, unsaturated or saturated C6 / 22 fatty acids, ricinoleic acid and 12-hydroxystearic acid and glycerin, polyglycerin, pentaerythritol, dipentaerythritol, sugar alcohols (e.g. sorbitol), alkyl glucosides (e.g. methyl glucoside, butyl glucoside - glucoside) and polyglucosides (eg cellulose);

(7) mono-, di- and trialkyl phosphates and mono-, di- and / or tri-PEG-alkyl phosphates;

(8) wool wax alcohols;

(9) polysiloxane-polyalkyl-polyether copolymers or corresponding derivatives;

(10) mixed esters of pentaerythritol, fatty acids, citric acid and fatty alcohol according to DE-PS 1165574 and / or mixed esters of fatty acids with 6 to 22 carbon atoms, methyl glucose and polyols, preferably glycerol and

(11) 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 homolog mixtures, the middle of which 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. Ci2 / i8 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 dispersants. 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-carboxyl -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 Cocamidopropyl Betaine is particularly preferred. Also suitable dispersants are ampholytic surfactants. Ampholytic surfactants are surface-active compounds which, in addition to a Cβ / iβ-alkyl or -acyl group, contain at least one free amino group and at least one -COOH or - SOßH 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-alkylsarcosine, 2-alkylaminopropionic acid and alkylaminoacetic acid, each with approximately 8 to 18 carbon atoms in the alkyl group. Particularly preferred ampholytic surfactants are N-cocoalkylaminopropionate, cocoacylaminoethylaminopropionate and Ci2 / i8-acylsarcosine. In addition to the ampholytic, quaternary dispersants 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 and polyethoxylated or acylated lanolin and lecithin derivatives, polyol fatty acid esters, monoglycerides and fatty acid alkanolamides can be used as superfatting agents, the latter simultaneously serving as foam stabilizers.

Pearlescent waxes, for example, are: alkylene glycol esters, especially ethylene glycol distearate; Fatty acid alkanolamides, especially coconut fatty acid diethanolamide; Partial glycerides, especially stearic acid monoglyceride; Esters of polyvalent, optionally hydroxy-substituted carboxylic acids with fatty alcohols having 6 to 22 carbon atoms, especially long-chain esters of tartaric acid; Fatty substances, such as, for example, fatty alcohols, fatty ketones, fatty aldehydes, fatty ethers and fatty carbonates, which have a total of at least 24 carbon atoms, especially lauron and distearyl ether; Fatty acids such as stearic acid, hydroxystearic acid or behenic acid, ring opening products of olefin epoxides with 12 to 22 carbon atoms with fatty alcohols with 12 to 22 carbon atoms and / or polyols with 2 to 15 carbon atoms and 2 to 10 hydroxyl groups and mixtures thereof.

Mainly fatty alcohols with 12 to 22 and preferably 16 to 18 carbon atoms and also partial glycerides come into consideration as consistency agents. A combination of these is preferred Substances with aikyloligoglucosides and / or fatty acid N-methylglucamides of the same chain length and / or polyglycerol poly-12-hydroxystearates. Suitable thickeners are, for example, polysaccharides, in particular xanthan gum, guar guar, agar agar, alginates and tyloses, carboxymethyl cellulose and hydroxyethyl cellulose, and also higher molecular weight polyethylene glycol mono- and diesters of fatty acids, polyacrylates, (for example Carbopole® from Goodrich or Synthalene® from Sigma), polyacrylic amides, polyvinyl alcohol and polyvinyl pyrrolidone, surfactants such as ethoxylated fatty acid glycerides, esters of fatty acids with polyols such as pentaerythritol or trimethylol propane, fatty alcohol ethoxylates with a narrow homolog distribution or alkyl oligoglucosides as well as electrolytes such as sodium chloride and ammonium chloride.

Suitable cationic polymers are, for example, cationic cellulose derivatives, e.g. a quaternized hydroxyethyl cellulose available under the name Polymer JR 400® from Amerchol, cationic starch, copolymers of diallyl ammonium salts and acrylamides, quaternized vinyl pyrrolidone / vinyl imidazole polymers such as e.g. Luviquat® (BASF), condensation products of polyglycols and amines, quaternized collagen polypeptides, such as lauryldimonium hydroxypropyl hydrolyzed collagen (Lamequat®L / Grünau), quaternized wheat polypeptides, polyethyleneimine, cationic silicone polymers, e.g. Amidomethicones, copolymers of adipic acid and dimethylaminohydroxypropyldiethylenetriamine (Cartaretine® / Sandoz), copolymers of acrylic acid with dimethyldiallylammonium chloride (Merquat® 550 / Chemviron), polyaminopolyamides, e.g. described in FR-A 2252840 and its crosslinked water-soluble polymers, cationic chitin derivatives such as quaternized chitosan, optionally microcrystalline, condensation products of dihaloalkylene, such as e.g. Dibromobutane with bisdialkylamines, e.g. Bis-dimethylamino-1,3-propane, cationic guar gum, such as e.g. Jaguar® CBS, Jaguar® C-17, Jaguar® C-16 from Celanese, quaternized ammonium salt polymers such as e.g. Mirapol® A-15, Mirapol® AD-1, Mirapol® AZ-1 from Miranol.

Suitable silicone compounds are, for example, dimethylpolysiloxanes, methylphenylpolysiloxanes, cyclic silicones and amino, fatty acid, alcohol, polyether, epoxy, fluorine, glycoside and / or alkyl-modified silicone compounds, which can be both liquid and resinous at room temperature. Typical examples of fats are glycerides, beeswax, camamauba wax, candelilla wax, montan wax, paraffin wax or microwaxes, if appropriate in combination with hydrophilic waxes, for example cetylstearyl alcohol or partial glycerides. Metal salts of fatty acids such as magnesium, aluminum and / or zinc stearate can be used as stabilizers. Biogenic active substances are, for example, tocopherol, tocopherol acetate, tocopherol palmitate, ascorbic acid, deoxyribonucleic acid, retinol, bisabolol, allantoin, phytantriol, panthenol, AHA acids, amino acids, ceramides, pseudoceramides, essential oils, plant extracts and vitamins. Common film formers are, for example, chitosan, microcrystalline chitosan, quaternized chitosan, polyvinylpyrrolidone, vinylpyrrolidone-vinyl acetate. Copolymers, polymers of the acrylic acid series, quaternary cellulose derivatives, collagen, hyaluronic acid or its salts and similar compounds. Montmorillonites, clay minerals, pemulene and alkyl-modified carbopol types (Goodrich) can serve as swelling agents for aqueous phases.

UV light protection filters are organic substances which are able to absorb ultraviolet rays and the absorbed energy in the form of longer-wave radiation, e.g. To give off heat again. UVB filters can be oil-soluble or water-soluble. As oil-soluble substances e.g. to call:

3-benzylidene camphor and its derivatives, e.g. 3- (4-methylbenzylidene) camphor;

4-aminobenzoic acid derivatives, preferably 4- (dimethylamino) benzoic acid 2-ethylhexyl ester, 4-

2-octyl (dimethylamino) benzoate and amyl 4- (dimethylamino) benzoate;

Esters of cinnamic acid, preferably 2-ethylhexyl 4-methoxycinnamate, 2-ethylhexyl 4-methoxycinnamate, 2-ethylhexyl 2-cyano-3-phenylcinnamate (octocrylene);

Esters of salicylic acid, preferably salicylic acid 2-ethylhexyl ester, salicylic acid 4-isopropylbenzyl ester, salicylic acid homomethyl ester;

Derivatives of benzophenone, preferably 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-methoxy-4'-methylbenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone;

Esters of benzalmalonic acid, preferably di-2-ethylhexyl 4-methoxybenzmalonate;

Triazine derivatives, e.g. 2,4,6-trianilino- (p-carbo-2'-ethyl-1'-hexyioxy) -1, 3,5-triazine and octyltriazone.

Propane-1,3-dione, e.g. 1- (4-tert-butylphenyl) -3- (4'methoxyphenyl) propane-1,3-dione;

Possible water-soluble substances are:

• 2-phenylbenzimidazole-5-sulfonic acid and its alkali, alkaline earth, ammonium, alkylammonium, alkanolammonium and glucammonium salts;

• Sulfonic acid derivatives of benzophenones, preferably 2-hydroxy-4-methoxybenzophenone-5-sulfonic acid and its salts;

Sulfonic acid derivatives of 3-benzylidene camphor, e.g. 4- (2-oxo-3-bomylidene-methyl) benzenesulfonic acid and 2-methyl-5- (2-oxo-3-bomylidene) sulfonic acid and their salts.

Derivatives of benzoylmethane, such as 1 - (4'-tert-butylphenyl) -3- (4'-methoxyphenyl) propane-1, 3-dione or 1-phenyl-3-, are particularly suitable as typical UV-A filters. (4'-isopropylphenyl) propane-1,3-dione. The UV-A and UV-B filters can of course also be used in mixtures. Secondary light stabilizers of the antioxidant type can also be used, which interrupt the photochemical reaction chain which is triggered when UV radiation penetrates the skin. Typical examples are superoxide dismutase, tocopherols (vitamin E) and ascorbic acid (vitamin C). Further suitable UV light protection filters can be found in the overview by P.Finkel in SÖFW-Journal 122, 543 (1996).

Hydrotropes, such as ethanol, isopropyl alcohol, or polyols can also be used to improve the flow behavior. Polyols that come into consideration here preferably have 2 to 15 carbon atoms and at least two hydroxyl groups. Typical examples are

• glycerin;

Alkylene glycols, such as, for example, ethylene glycol, diethylene glycol, propylene glycol, butylene glycol, hexylene glycol and polyethylene glycols with an average molecular weight of 100 to 1,000 daltons;

Technical oligoglycerol mixtures with a degree of self-condensation of 1.5 to 10, such as technical diglycerol mixtures with a diglycerol content of 40 to 50% by weight;

• Methyl compounds, such as in particular trimethylolethane, trimethylolpropane, trimethylolbutane, pentaerythritol and dipentaerythritol;

• Lower alkyl glucosides, in particular those with 1 to 8 carbons in the alkyl radical, such as methyl and butyl glucoside;

Sugar alcohols with 5 to 12 carbon atoms, such as sorbitol or mannitol,

• Sugar with 5 to 12 carbon atoms, such as glucose or sucrose;

Aminosugars, such as glucamine.

Suitable preservatives are, for example, phenoxyethanol, formaldehyde solution, parabens, pentanediol or sorbic acid. N, N-diethyl-m-touluamide, 1, 2-pentanediol or Insect repellent 3535 are suitable as insect repellents, and dihydroxyacetone is suitable as a self-tanner.

Perfume oils include extracts from flowers (lavender, roses, jasmine, neroli), stems and leaves (geranium, patchouii, petitgrain), fruits (anise, coriander, caraway seeds, juniper), fruit peels (bergamot, lemon, oranges), roots (Macis, Angelica, Celery, Cardamom, Costus, Iris, Calmus), woods (sandal, guaiac, cedar, rosewood), herbs and grasses (tarragon, lemon grass, sage, thyme), needles and twigs (spruce , Fir, pine, mountain pine), resins and balsams (galbanum, elemi, benzoin, myrrh, olibanum, opoponax). Animal raw materials such as musk, civet and castoreum are also suitable. Ambroxan, eugenol, isoeugenol, citronellal, hydroxycitronellal, geraniol, citronellol, geranyl acetate, citral, ionone and methylionone are suitable as synthetic or semi-synthetic perfume oils.

The dyes which can be used are the substances which are suitable and approved for cosmetic purposes, as described, for example, in the publication "Cosmetic Dyes" by the Dye Commission of the German Research Foundation, Verlag Chemie, Weinheim, 1984, pp. 81-106 are put together. These dyes are usually used in concentrations of 0.001 to 0.1% by weight, based on the mixture as a whole.

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

Examples

Pigment dispersions were prepared by mixing the ingredients at 90 ° C and slowly cooling to room temperature. The degree of dispersion was then assessed microscopically; where (+) = very finely divided; (o) = finely divided and (-) coarse-grained. The storage stability was assessed after 1, 2 and 4 weeks; where (+) = stable and (-) sedimentation. The results are summarized in Table 1. Examples 1 to 3 are according to the invention, Examples V1 to V5 are used for comparison.

Table 1

Degree of dispersion and stability

Claims

claims

1. Containing pigment dispersions

(a) ester oils and

2. Dispersions according to claim 1, characterized in that they contain as component (a) ester oils which are selected from the group formed by esters of linear C6-C20 fatty acids with linear C6-C2o fatty alcohols, esters of branched C6-Ci3-carboxylic acids with linear C6-C2o fatty alcohols, esters of linear Cβ-cis-fatty acids with branched alcohols, esters of linear and / or branched fatty acids with polyhydric alcohols and / or Guerbet alcohols, triglycerides based on Cθ-Cio- Fatty acids, esters of C6-C22 fatty alcohols and / or Guerbet alcohols with aromatic carboxylic acids, dicarboxylic acid esters, vegetable oils, dialkyl carbonates, Guerbet carbonates, and ring opening products of epoxidized fatty acid esters with polyols.

3. Dispersions according to claims 1 and 2, characterized in that they contain as component (b1) alkyl and / or alkenyl oligoglycosides of the formula (I),

R ¹ O- [G] _p (I)

in which R ^{1 is} an alkyl and / or alkenyl radical having 4 to 22 carbon atoms, G is a sugar radical having 5 or 6 carbon atoms and p is a number from 1 to 10.

4. Dispersions according to claims 1 to 3, characterized in that they contain as component (b2) polyglycerol poly-12-hydroxystearate.

5. Dispersions according to claims 1 to 4, characterized in that they contain components (b1) and (b2) in a weight ratio of 10:90 to 90:10.

6. Dispersions according to claims 1 to 5, characterized in that they contain finely dispersed metal oxides or salts as pigments.

7. Dispersions according to claim 6, characterized in that they contain finely dispersed titanium dioxide and / or zinc oxide.

8. Dispersions according to claims 1 to 6, characterized in that they

(a) 70 to 95% by weight of ester oils,

(b) 1 to 10% by weight dispersant mixture and

(c) 0.1 to 5% by weight of pigments

included, with the proviso that the amounts add up to 100 wt .-%.

9. Use of dispersions according to claim 1 for the production of sunscreens.

10. Use of dispersions according to claim 1 for the production of products of decorative cosmetics.