DE19519404A1 - Body deodorant - Google Patents

Abstract

The invention concerns fluid, aqueous body deodorants which are completely or largely free from volatile alcohols, contain as carrier component, in addition to water, between 10 and 20 wt.% of a water-soluble C2 to C3 polyol with 2 to 6 hydroxyl groups or a polyetherpolyol with a molecular weight of up to 1000, and between 0.1 and 10 wt.% of a water-soluble surfactant, preferably an alkyl(oligo)glucoside, and have a pH of between 3 and 6. Between 0.1 and 2 wt.% of an antimicrobial or esterase-inhibiting substance, preferably a cationic phospholipid, is present as the deodorizing active substance. The preparations are clear or transparent and are suitable for use in pump sprays or roll-on applicators.

Description

The invention relates to aqueous preparations for body deodorization, the liquid, clear or transparent and cold-stable and from volatile solvents are largely or completely free.

Preparations for body deodorization are usually used as a stick preparations, roll-on formulations or as aerosol sprays. Products that are in roll-on containers are increasingly preferred or are packaged in pump sprays without aerosol propellant. For this So far, the main purpose has been alcoholic and aqueous-alcoholic Preparations with relatively high levels of lower alcohols been set.

But you also want the content of volatile organic substances lower in such preparations and avoid them if possible. The however, causes considerable problems with the clear and storage-stable Incorporation of active ingredients and fragrances.

The task was therefore to provide an aqueous, liquid deodorant slam that clear or transparent and cold stable as well as from volatile solvents is largely or completely free.  

This object was achieved according to the invention by an aqueous body perdeodorans, which is a deodorant active in an aqueous Contains carrier, the carrier components water and (based on the entire deodorant) 10 to 20 wt .-% of a water-soluble Po lyols from the group of polyols with 2 to 9 carbon atoms and 2 to 6 Hydroxyl groups and the polyether polyols with molecular weights up 1000 by the addition of ethylene oxide and / or propylene oxide such polyols are available, and 0.1 to 10 wt .-% of a water contains soluble surfactant and its pH to a value between 3 and 6 is set.

A preparation is preferred as the aqueous body deodorant understood that less than 5 wt .-% volatile solvent, ins especially less than 5% by weight of lower alcohols with 1 to 3 carbon atoms contains men. The body deodorant according to the invention is preferably free of volatile solvents.

Suitable water-soluble polyols are, for. B. ethylene glycol, propylene glycol, glycerin, diethylene glycol, diglycerin, sorbitol, methylgluco sid, butyl glucoside, adducts of 10 to 20 moles of ethylene oxide on methyl glucoside or butyl glucoside, polyglycerin, polyethylene lenglycole and adducts of ethylene glycol with polypropy lenglycole. All polyols or poly become water-soluble understood ether polyols that at 20 ° C to at least 10 wt .-% in Water are clearly soluble and thereby form liquid solutions. Be preference is given to the water-soluble polyol 1,2-propylene glycol contain body deodorants according to the invention. But it can also Mixtures of the polyols mentioned are used.

Any surfactant which has a water solubility of at least 1% by weight in water at 20 ° C. can be used as the water-soluble surfactant. When selecting the surfactant, however, care must be taken to ensure that there is no impairment of the antimicrobial, deodorant effect of the deodorant active ingredients. Although nonionic surfactants are preferred because of their good emulsifying and solubilizing properties, certain antimicrobial substances may lose their effectiveness. Particularly preferably, according to the invention, suitable surfactants are alkyl (oligo) glucosides of the formula R¹O (C₆H₁₀O₅) _n H, in which R¹ is an alkyl group having 8 to 16 C-atoms, (C₆H₁₀O₅) a glucoside residue and n, the degree of oligomerization of which Is 1 to 10. The glycoside residue is preferably derived from glucose.

Alkyl glycosides, their preparation and use as surface ac active substances are for example from DE 19 43 689 or DE 38 27 543 known. They are manufactured, for example, by Reaction of glucose or of oligosaccharides with primary alcohol fetch with 8 to 22 carbon atoms or by transacetalization of starch with z. B. lower alcohols and re-acetalization with the C₈-C₂₂ fatty alcohol. Regarding the glycoside residue, both Monoglycosides, in which a cyclic sugar residue is glycosidic the fatty alcohol is bound, as well as oligomeric glycosides with a Degree of oligomerization up to about 10 are suitable. The middle oligo Degree of merger results from the molar proportions of the individual Oligomers by dividing the sum of the structural units by the Sum of molecules (see Principles of Polymer Chemistry, Paul J. Flory, Cornell University Press, Ithaca, New York 1953, page 35-36).

The use of alkyl (oligo) glycosides in the invention Deodorants lead to numerous deodorant agents, e.g. B. for cationic compounds and for the bis-biguanides (e.g. Chlorhexidine gluconate) even increased to a synergistic deodorant effect that allows such deodorant active ingredients in particularly low and physiologically better tolerated con use centers.  

Instead of the alkyl glycosides, but preferably in addition to these, other surface-active substances can also be used, however, the concentration of surfactants should preferably not be 10% by weight Rather, their concentration should rather be as low as possible and only as high as for the stable emulsification of the deodorant Active ingredients and possibly the fragrances are kept necessary.

Suitable co-surfactants are especially non-ionic surfactants, e.g. B. An storage products from ethylene oxide to fatty alcohols, fatty acids, fat acid partial glycerides, sorbitan fatty acid esters or methyl glucoside Fatty acid esters. Other suitable nonionic co-surfactants are e.g. B. ethoxylated castor oil or fatty acid esters of glycerol ethoxylates (e.g. Cetiol®HE, Henkel KGaA).

In principle, all of these can be used as deodorising agents Purpose known substances are used, which due to their anti microbial or esterase inhibiting effect the microbial sweat Inhibit decomposition on the skin. But it can also be astringent Substances are used that entail perspiration on the skin counteract.

Known astringent, germ-resistant even in low concentrations antiperspirant compounds and in higher concentrations are z. B. the strongly hydrolyzing aluminum in the aqueous medium, Zinc and zirconium salts.

Known esterase-inhibiting deodorant active ingredients are e.g. B. the esters of hydroxycarboxylic acids such as. B. ethyl lactate or triethyl citrate. Other suitable active substances of this type are e.g. B. from DE-A-43 43 264 and DE-A-43 43 265 known ester compounds.

Known antimicrobial deodorant active ingredients are e.g. B. the salts benzoic acid, p-hydroxybenzoic acid, salicylic acid, the  Usnic acid or undecylenic acid. Other suitable deodorant Active ingredients are benzyl alcohol, 2-phenylethanol, phenoxyethanol, Far nesol, glycerol monoalkyl (C₈-C₁₆) ether and diglycerol monoalkyl (C₈-C₁₆) ether and fatty acid monoglycerides.

Antimicrobial and esterase-inhibiting deodorant active ingredients are used Before carrying out the invention in an amount of 0.1 to 2 wt .-% moves. A preferred group of antimicrobial and deodorant Compounds is that of the quaternary ammonium compounds, the bis biguanides, e.g. B. chlorhexidine, and the polybiguanides. Especially be preferred for use in the body deodorants according to the invention the group of betaines and cationic phospholi is suitable pide. In particular, those from WO 93/25185 are deodorant active ingredients known cationic phospholipids of formula II,

in which R² is an alkyl, alkenyl or hydroxyalkyl group with 8 to 22 C atoms or an acylaminoalkyl group of the formula R⁵CONH (C _m H _2m ) -, in which R⁵CO is a linear acyl group with 8 to 22 C atoms and m = 2 or 3 is, R³ and R⁴ are alkyl groups with 1 to 4 C atoms or hydroxyalkyl groups with 2 to 4 C atoms or carboxyalkyl groups of the formula - (CH₂) _z - COOM, where x is a value from 1 to 3 and y is a value of ( 3-x) and z has a value from 1 to 3, M = hydrogen or an alkali metal or ammonium and A is a water-soluble anion. Anion which forms a water-soluble ammonium salt is to be understood as a "water-soluble" anion. Before A is added a halide, e.g. B. a chloride or bromide anion.

The body deodorants according to the invention contain for adjustment a pH of 3 to 6 preferably a weak acid such as. B. Lactic acid, citric acid, tartaric acid or glycolic acid or a puf system from such acids and small amounts of alkali salts such acids.

Deodorant preparations preferably also contain a fragrance substance that can be added in amounts of 0.1 to 2 wt .-%. On However, fragrances can also be dispensed with if, for. B. as a deodorant dorant active ingredient an antimicrobial essential oil or an antimicrobial deodorant ingredient with a pleasant smell like e.g. B. phenylethyl alcohol or hydrocinnamic alcohol or a mixture is set as z. B. is known from DE-A-41 24 664.

The body deodorants according to the invention are liquid, i.e. H. she should have a viscosity at 20 ° C that is below 1000 [m · Pa · s] (measured with a rotary viscometer at low low shear rate). Then they are particularly suitable for Use in so-called roller ball application containers or pumpers dust.

Viscosity should be used in rollerball application containers preferably in the range from 500 to 1000 [m · Pa · s] at 20 ° C, which optionally by adding water-soluble thickeners, e.g. B. of natural microbial or synthetic water-soluble buttocks lyers such as B. water-soluble starch, guar, xanthan gum, hydroxy ethyl cellulose, hydroxypropyl starch, polyacrylamide, polyvinyl pyrro lidon, polyvinyl alcohol or cross-linked polyacrylates (e.g. of the type Carbopol®) can be achieved.

For application from pump atomizers, the viscosity should be lower, are preferably below 500 m · Pa · s (20 ° C).  

In addition to the components mentioned, the inventive Body deodorants are even more common in such preparations Tools and additives included. Such tools are e.g. B.

• - Antioxidants, e.g. B. butylated hydroxyanisole, butylated hydroxytoluene, Tocopherols or tocopherol esters
• - Complexing agents, e.g. B. ethylenediamine tetraacetic acid salts, Ni trilotriacetic acid salts, sodium citrate
• - Skin cosmetic active ingredients, e.g. B. oil components, fats, waxes, Paraffins, silicones in small amounts of up to 2% by weight preparation
• - Aids to convey a feeling of freshness on the skin, e.g. B. menthol or mentyl lactate
• - dyes, opacifiers.

The following examples are intended to explain the subject matter of the patent in more detail:

Claims (7)

1. Aqueous body deodorant which contains a deodorant active ingredient in an aqueous carrier, characterized in that the carrier components are water, 10 to 20% by weight of a water-soluble polyol from the group of the polyols having 2 to 9 carbon atoms and 2 to 6 hydroxyl groups and the polyether polyols with molecular weights up to 1000, which are obtainable by the addition of ethylene oxide and / or propylene oxide to such polyols, and contain 0.1 to 10% by weight of a water-soluble surfactant, and the pH of the body deodorant to a value between 3 and 6 is set. 2. Body deodorant according to claim 1, characterized in that less than 5% by weight of volatile alcohols with 1 to 4 carbon atoms men are included. 3. Body deodorant according to claim 1 or 2, characterized in that the surfactant is an alkyl (oligo) glucoside of the formula R¹O (C₆H₁₀OS) _n H, in which R¹ is an alkyl group having 8 to 16 carbon atoms, (C₆H₁₀O₅) a glucoside residue and n, whose degree of oligomerization is 1 to 10, is contained in an amount of 1 to 5% by weight. 4. Body deodorant according to one of claims 1 to 3, characterized ge indicates that an antimicro biological or esterase-inhibiting substance in an amount of 0.1 to 2 wt .-% is included.   5. Body deodorant according to one of claims 1 to 3, characterized in that a cationic phospholipid of the formula II as the deodorant active ingredient in which R² is an alkyl, alkenyl or hydroxyalkyl group with 8 to 22 C atoms or an acylaminoalkyl group of the formula R⁵CONH (C _m H _2m ) -, in which R⁵CO is a linear acyl group with 8 to 22 C atoms and m = 2 or 3 is, R³ and R⁴ are alkyl groups with 1 to 4 C atoms or hydroxyalkyl groups with 2 to 4 C atoms or carboxyalkyl groups of the formula - (CH₂) _z - COOM, where x is a value from 1 to 3 and y is a value of ( 3-x), z has a value from 1 to 3 and M is hydrogen or an alkali metal and A is a water-soluble anion. 6. Body deodorant according to one of claims 1 to 5, characterized ge indicates that propylene glycol-1,3 is contained as polyol. 7. Body deodorant consisting of a roller ball application container or a pump spray and an aqueous body contained therein perdeodorans according to one of claims 1 to 6.