JP2002544153A - Antiperspirant stick - Google Patents

Abstract

  (57) [Summary] The present invention relates to (A) 10 to 30% by weight of an astringent aluminum salt, zirconium salt or zinc salt, (B) 30 to 50% by weight of a liquid carrier component, and (C) 18 to 30% by weight of a coagulating fat or wax component. %, (D) 1 to 20% by weight of a water-soluble surfactant. The liquid carrier component comprises a non-polar oil, for example, 20-40% by weight of a liquid silicone oil, and liquid branched alkanols, alkanediols, ether alcohols and dialkyl ethers (C12-C12), based on the total stick composition. 24) and 10 to 30% by weight of a polar oil selected from 2 to 30 moles of a propylene oxide adduct of a monofunctional or polyfunctional alkanol having 3 to 20 carbon atoms, if it contains an antiperspirant stick composition Shows an improved antiperspirant effect.

Description

DETAILED DESCRIPTION OF THE INVENTION

TECHNICAL FIELD The present invention relates to a liquid nonpolar carrier material, a fat or wax component having a coagulating action,
And a water-free or substantially water-free type antiperspirant stick in which a sweat suppressant (antiperspirant) is dispersed in a carrier comprising a surfactant.

BACKGROUND ART Various cosmetic preparations for suppressing sweat and suppressing body odor are commercially available.
Among such various preparations, stick-like preparations are particularly popular because of their ease of handling. The gel base of the stick-form preparation is required to have a certain degree of firmness and dimensional stability while being capable of being applied to the skin with a small pressure. Such consistency may be achieved, for example, by a water / alcoholic or water / glycolic formulation solidified with a soap to form a gel. A disadvantage of such sticks is that acidic aluminum salts (eg, aluminum chlorohydrate) cannot be incorporated into such soap gel sticks.

[0003] Therefore, the importance of so-called water-free dispersing sticks has increased. This type of stick consists of a particulate, astringent aluminum or zirconium salt dispersed in a non-polar carrier liquid solidified with a gel former or waxy fatty component. Examples of suitable non-polar carrier liquids are hydrocarbon or silicone oils,
Preferably having a boiling point of less than 200 ° C. or having some volatility,
For example, cyclic siloxanes (cyclomethicones) and their mixtures with emollient oil components.

[0004] Water-free dispersion sticks of this type often have the disadvantage that the astringent salts are not sufficiently fast-acting or intense in the antiperspirant action. It has already been practiced to render such stick-like compositions hydrophilic by the addition of surfactants, which also improves the cleaning off of residues from the skin or clothing. For example, US Pat. No. 4,151,272 describes antiperspirant sticks containing up to 5% by weight of fatty alcohol polyglycol ether. EP4918
43B1 discloses an antiperspirant stick composition containing a 10 mole adduct of propylene oxide of butanediol to reduce the "vitiligo" effect. EP7
77463B1 describes an antiperspirant stick containing 11,12-dihydroxystearic acid as a coagulating fat or wax component.

[0005] However, the known stick compositions as described above still have various disadvantages. That is, a stick-like composition having a very low coagulating wax component content tends to leach oil at high temperatures. Stick compositions in which the liquid carrier component does not contain a polar component have a very weak antiperspirant effect.

DISCLOSURE OF THE INVENTION When the liquid carrier component contains a relatively large amount of a polar oil component selected from liquid branched alkanols, alkanediols or liquid dialkyl ethers (12 to 24 carbon atoms), it is difficult to control the liquid carrier component. It has been found that sweat-stick compositions (including those with a relatively high content of fat or wax component having a coagulating effect) are very effective and exhibit an antiperspirant effect quickly.

That is, the present invention provides: (A) 10 to 30% by weight of an astringent aluminum salt, zirconium salt or zinc salt;
(B) 30 to 50% by weight of a liquid carrier component, (C) Fat or wax component 18 to 30 having a coagulating action having a melting point of 40 to 80 ° C.
Antiperspirant sticks containing 1-20% by weight of (D) a water-soluble surfactant and having an antiperspirant astringent dispersed in a paste which is dimensionally stable at 40 ° C. but can be spread on the skin. Liquid composition wherein the liquid carrier component (B) is a non-polar oil, preferably 20-40% by weight of a low boiling or liquid silicone oil, a liquid branched alkanol, alkanediol, ether alcohol or dialkyl ether (carbon A composition comprising 10 to 30% by weight of a polar oil selected from 2 to 30 moles of a propylene oxide adduct of a monofunctional or polyfunctional alkanol having 3 to 20 carbon atoms (see above). All weight percentages are based on the total stick composition).

[0008] Suitable antiperspirants are, inter alia, astringent or protein-coagulating aluminum, zirconium or zinc salts. Examples of such suitable antiperspirant salts are aluminum chloride, aluminum hydroxychloride, aluminum dichlorohydrate, aluminum sesquichlorohydrate, complex compounds thereof with, for example, 1,2-propylene glycol, aluminum hydroxy allantoate, Aluminum chloride tartrate, aluminum sulfate, sodium aluminum lactate, potassium aluminum sulfate (california), aluminum zirconium trichlorohydrate, aluminum zirconium tetrachlorohydrate, aluminum zirconium pentachlorohydrate, and amino acids such as glycine (Eg, aluminum zirconium tetrachloroglycine complex), sodium zirconium Murakuteto a Zn sulfate and Zn phenol sulfonates. Astringent salts should be in particulate form with an average particle size of less than 100 μm (preferably less than 50 μm).
In a particularly preferred embodiment, astringent salt is an aluminum hydroxychloride of the formula _{Al 2 (OH) 5 Cl ·} 2~3H 2 O, present in an amount of 15 to 25 wt%.

In order to achieve fast-acting and high efficacy, it is particularly preferred to coat the astringent salt with a water-soluble nonionic surfactant or to impregnate the astringent salt with a water-soluble nonionic surfactant. Has proven to be advantageous. A surfactant which has been found to be particularly suitable for this purpose is an alkyl (oligo) glycoside, which is applied to the salt particle surface in an amount of 0.1 to 5% by weight.

[0010] Fatty or waxy components having suitable coagulating action include somewhat arbitrary saturated linear fatty acids and fatty alcohols having 14 to 22 carbon atoms, triglycerides of saturated fatty acids having 14 to 22 carbon atoms, carbon atoms. 28-44 saturated linear wax esters (fatty acid / fatty alcohol esters), or mixtures thereof. A mixture of 1 part by weight of hydrogenated castor oil and 2 to 4 parts by weight of cetyl or stearyl alcohol has proven to be particularly suitable.

Suitable water-soluble surfactants are basically any surfactants which form a 1% by weight solution in the system at 20 ° C. and at least 1% by weight in water at 20 ° C. is there. Basically, the structure and ionicity are arbitrary, but a nonionic surfactant,
In particular, an ethylene oxide adduct of a fatty molecule having at least one alkoxylatable group which is solid at normal temperature (20 ° C.) seems to be particularly suitable. Examples of suitable surfactants of this type include straight chain fatty alcohols having 16 to 22 carbon atoms, fatty acids having 12 to 22 carbon atoms, fatty acid alkanolamides, fatty acid monoglycerides, sorbitan fatty acid monoesters, fatty acid alkanolamides, fatty acids Glyceride (
For example, hydrogenated castor oil), methyl glucoside monofatty acid ester, ethylene oxide 10 to 40 mol adducts, and mixtures thereof.

[0012] The liquid carrier component consists of a non-polar oil component and a polar oil component. The main component is a non-polar oil, such as a silicone oil or a hydrocarbon oil. The non-polar oil is preferably a low boiling or volatile, linear or cyclic polydimethylsiloxane. Particularly suitable volatile silicone oils are cyclic polydimethylsiloxanes represented by the formula _{[(CH 3) 2 -SiO]} n (n = 4,5 or 6). Such products are, for example, Dow C
It is commercially available under the name orning® 200, 244, 245, 344 or 345.

[0013] The inclusion of a polar liquid carrier component is particularly important for the performance of the antiperspirant stick-like composition, especially for its immediate effect. Preferred polar liquid carrier components are liquid branched alkanols, alkanediols, ether alcohols and dialkyl ethers (
A propylene oxide adduct of a mono- or polyfunctional alkanol having 2 to 30 moles of carbon atoms having 12 to 24 carbon atoms or 3 to 20 carbon atoms. Ethylene oxide and propylene oxide adducts of such alkanols or polyols (eg, glycerol) may also be used in accordance with the present invention.

Examples of suitable liquid branched alkanols are Guerbet alcohols branched only at the carbon atom at position 2, such as 2-hexyldecanol or 2-octyldodecanol. Examples of other suitable liquid alcohols are isotridecanol, isohexadecanol and mixtures of such alcohols. Suitable alkanediols are vicinal diols obtained by ring-opening _{C12-24 epoxyalkanes} with water. Examples of suitable ether alcohols are glycerol, ethylene glycol, 1,2-propylene glycol or 1,2
Monoalkyl ethers of butanediol and other products obtained by ring-opening epoxyalkanes with monohydric alcohols, having 12 to 24 carbon atoms.

Examples of suitable dialkyl ethers are alkyl methyl ethers or di-n-alkyl ethers having 12 to 24 total carbon atoms. A particularly suitable di-n-alkyl ether is di-n-octyl ether as the commercial product Cetiol® OE (Henkel KGaA). Examples of suitable propylene oxide adducts of monohydric or polyhydric alcohols include PPG
-3-myristyl ether [Witconol (registered trademark) APM], PPG-14
Butyl ether [Ucon Fluid (registered trademark) AP], PPG-15-stearyl ether [Arlamol (registered trademark) E], PPG-9-butyl ether [Breox
(Registered trademark) B25], or PPG-10-butanediol [Macol (registered trademark) 57].

[0016] In a preferred embodiment, the antiperspirant stick compositions of the invention as polar oils, 2-hexyl decanol, and branched alkanols chosen from 2-octyl dodecanol, and mixtures thereof alcohols, C _3-20 2 to 20 mole adduct of alkanol with propylene oxide.

The stick composition of the present invention may further contain usual auxiliaries and active ingredients for skin care. In this connection, inert particulate inorganic or organic excipients are of particular importance.
Examples of such inert excipients are silica, clay, talc, Veegum, or organic excipients, such as polymer powder, starch or cellulose powder. In a preferred embodiment, the antiperspirant stick composition of the present invention further comprises 1 to 20% by weight of a particulate excipient selected from talc, silica and mixtures thereof. Such excipients significantly improve the strength, oil binding capacity, and abrasion of the stick.

[0018] Deodorants and other auxiliaries commonly used in antiperspirant compositions are balms, antioxidants, complexing agents, antibacterials, esterase-inhibiting deodorants and odor absorbing polymers.
Dyes and colored or white pigments may also be added to enhance the aesthetics of the stick. The following examples are intended to illustrate the invention without limiting it.

[0019] The stick compositions of Examples composition 1-5 was conveniently prepared from the raw materials listed in Table.
For comparison, the following stick-like compositions C1, C2, C3 and C4 were also produced: a lower content of polar oils (C1, C3), and / or a fat or wax having a coagulating action Containing the component at a lower content (C2)
Or does not contain a water-soluble surfactant (C4).

[0020] The antiperspirant effect is measured by the Bio Skin method (SOEFW Journal, 123, Vol. 10/97,
639-642). Sweat reduction after 3 days of application was measured and compared to untreated test areas. The results were evaluated according to the following criteria: sweat reduction: ++ = very good,
+ = Good,-= weak. The hardness of the antiperspirant stick was evaluated after storage at 50 ° C. for 3 days: Hardness (50 ° C.
): ++ = very good, + = enough,-= greasy, oil leached.

[0021]

[Table 1]

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Armin Vadre Federal Republic of Germany Day-40699 Erkrath, Wilbecker Strasse 105 (72) Inventor Dieter Hengstermann Federal Republic of Germany Day-46359 Heiden, Kreuz Wech 43 F term (reference) 4C083 AB171 AB211 AB221 AB222 AB431 AB432 AC071 AC072 AC091 AC092 AC111 AC171 AC172 AC181 AC182 AC241 AC351 AC421 AC422 AC432 AD151 AD171 AD172 BB02 BB11 CC17 DD11 EE07

Claims (6)

[Claims] (1) 10 to 30% by weight of an astringent aluminum salt, zirconium salt or zinc salt; (B) 30 to 50% by weight of a liquid carrier component; and (C) a fat having a coagulating action having a melting point of 40 to 90 ° C. Or wax component 18-30
% Of a water-soluble surfactant, (D) an antiperspirant stick composition in which an antiperspirant is dispersed in a paste which is dimensionally stable at 40 ° C. but can be spread on the skin. A liquid carrier component (B) comprising 20 to 40% by weight of a non-polar oil, preferably a low-boiling or liquid silicone oil, based on the total stick composition, a liquid branched alkanol, an alkanediol, 10 to 30% by weight of a polar oil selected from ether alcohols or dialkyl ethers (12 to 24 carbon atoms) and 2 to 30 moles of a propylene oxide adduct of a monofunctional or polyfunctional alkanol having 3 to 20 carbon atoms. Composition containing. 2. The antiperspirant stick composition according to claim 1, comprising a low boiling point or volatile chain or cyclic polydimethylsiloxane as the nonpolar oil. 3. A polar oil comprising a alkanol branched at one site selected from 2-hexyldecanol, 2-octyldodecanol and a mixture of these alcohols, and a 2 to 20 mol propylene oxide adduct of a C _3-20 alkanol. The antiperspirant stick-like composition according to claim 1 or 2, comprising: 4. A fatty or wax component having a coagulating action, comprising a saturated straight-chain fatty acid or fatty alcohol having 14 to 22 carbon atoms, and having 16 to 22 carbon atoms.
The antiperspirant stick composition according to any one of claims 1 to 3, which comprises a saturated fatty acid triglyceride, a saturated linear wax ester having 28 to 44 carbon atoms, or a mixture thereof. 5. The method according to claim 1, wherein the astringent salt contains aluminum hydroxychloride represented by the formula Al ₂ (OH) ₅ Cl.2-3H ₂ O in an amount of 15 to 25% by weight. An antiperspirant stick composition according to the above. 6. The antiperspirant stick composition according to claim 1, further comprising a particulate excipient selected from talc, silica and a mixture thereof in an amount of 1 to 20% by weight.