Patent Application
20190282488
The present application relates to antiperspirant compositions having improved efficacy, and methods using these compositions.
In many cultural areas the cleaning of and caring for one's own body includes measures intended to counteract the development of an excess body odor considered to be unpleasant. The development of body odor is promoted, amongst other things, by perspiration, and therefore the cosmetics industry provides numerous toiletry products which have been developed for use in bodily regions having a high density of sweat glands, in particular in the armpit area. These toiletry products act in a sweat-inhibiting (antiperspirant) and/or deodorizing (deodorant) manner.
Cosmetic antiperspirants of the prior art usually contain at least one antiperspirant salt in addition to at least one oil or a fatty substance and an aromatic component or a perfume. The sweat-inhibiting salts used in these antiperspirants on the one hand reduce the sweat secretion of the body by employing a temporary constriction and/or blocking of the excretory ducts of the sweat glands, such that the amount of sweat can be reduced by approximately 20 to about 60%. On the other hand, they have an additional, deodorizing effect on account of their antimicrobial effect. Usually, activated basic aluminium and aluminium-zirconium halides are used as sweat-inhibiting salts. Furthermore, aluminium and aluminium-zirconium halides which are stabilized with organic acids as complex ligands can also be used. Humans with sensitive skin can react to sweat-inhibiting salts. The aluminium and aluminium-zirconium halides forming the basis of the use of antiperspirants can additionally build up visibly on the treated skin or on the textiles in contact with the treated skin, and in the case of textiles so too can residues of the cosmetic agent resistant to washing.
Aluminium-free antiperspirants and deodorants are described for example in German patent applications DE102013225617 A1 and DE102013225620 A1.
International application WO 93/24105 A1 describes aluminium-free antiperspirants on the basis of different water-insoluble polymers.
These and other aluminium-free antiperspirants, however, do not satisfy the increasing cosmetic requirements.
Against this background, the technical problem addressed by the present disclosure lies in providing an antiperspirant having a high efficacy against body odor, good skin compatibility, and a significantly reduced formation of residue on the skin and textiles. The antiperspirant should additionally be exemplified by high stability.
It has now surprisingly been found that the above-mentioned technical problems are solved by aluminium-free compositions which, in addition to a specific amphomeric polymer, also contain an oil. The present disclosure provides:
An antiperspirant cosmetic agent containing:
The deodorizing cosmetic agent according to the preceding point, wherein the agent contains, as copolymer a), at least one copolymer formed from the monomers
The deodorizing cosmetic agent according to either one of the preceding points, wherein the copolymer a), in relation to the total weight of the agent, is contained in an amount of from about 1.0 to about 10% by weight, for example from about 3.0 to about 7.0% by weight.
The deodorizing cosmetic agent according to any one of the preceding points, wherein the oil is selected from the group of silicone oils, for example from the group of dialkyl and alkylaryl siloxanes, in particular from the group of cyclopentasiloxane, cyclohexasiloxane, dimethylpolysiloxane and methylphenylpolysiloxane.
The deodorizing cosmetic agent according to any one of the preceding points, wherein cyclopentasiloxane is contained as oil.
The deodorizing cosmetic agent according to any one of the preceding points, wherein the oil, in relation to the total weight of the agent, is contained in an amount of from about 25 to about 70% by weight, for example from about 35 to about 55% by weight.
The deodorizing cosmetic agent according to any one of the preceding points, wherein the cosmetic agent, in relation to the total weight of the agent, contains from about 10 to about 60% by weight, for example from about 15 to about 50% by weight, and in particular from about 20 to about 40% by weight of hydrophilic organic solvent.
The deodorizing cosmetic agent according to the preceding point, wherein the hydrophilic organic solvent is selected from the group of ethanol and propylene carbonate.
The deodorizing cosmetic agent according to any one of the preceding points, wherein the cosmetic agent, in relation to the total weight of the agent, contains from about 10 to about 50% by weight, for example from about 14 to about 46% by weight and in particular from about 18 to about 42% by weight of ethanol.
The deodorizing cosmetic agent according to any one of the preceding points, wherein the cosmetic agent, in relation to the total weight of the agent, contains from about 0.5 to about 4.0% by weight, for example from about 1.0 to about 3.5% by weight and in particular from about 1.5 to about 3.0% by weight of propylene carbonate.
The deodorizing cosmetic agent according to any one of the preceding points, wherein the agent has a vapour pressure (about 20° C.) of from about 1.0 to about 3.0 kPa, for example from about 1.2 to about 2.7 kPa, and in particular from about 1.4 to about 2.5 kPa.
The deodorizing cosmetic agent according to any one of the preceding points, wherein water is contained, in relation to the total weight of the agent, in amounts of less than about 5.0% by weight, preferably of less than about 3.0% by weight, and in particular of less than about 1.0% by weight.
The deodorizing cosmetic agent according to any one of the preceding points, wherein the agent, in relation to the total weight of the agent, contains from about 2.0 to about 20% by weight, for example from about 4.0 to about 16% by weight, and in particular from about 8.0 to about 12% by weight of at least one enzyme inhibitor.
The deodorizing cosmetic agent according to any one of the preceding points, wherein the agent contains an enzyme inhibitor from the group of trialkyl citric acid ester, preferably triethyl citrate or zinc glycinate, in particular triethyl citrate.
The deodorizing cosmetic agent according to any one of the preceding points, wherein the agent, in relation to the total weight of the agent, contains from about 0.5 to about 10% by weight, for example from about 1.0 to about 9.0% by weight, and in particular from about 4.0 to about 8.0% by weight of thickener.
The deodorizing cosmetic agent according to any one of the preceding points, wherein the agent contains a thickener from the group of hydrophobically modified silicates, for example from the group of hydrophobised hectorites, in particular from the group of hydrophobised hectorites with the INCI name Quaternium-18 Hectorite.
The deodorizing cosmetic agent according to any one of the preceding points, wherein the cosmetic agent, in relation to the total weight of the agent, consists to an extent of at least about 80% by weight, for example at least about 90% by weight, and in particular at least about 95% by weight of
A cosmetic preparation including
A cosmetic preparation including
A cosmetic product including
Use of a deodorizing cosmetic agent, a cosmetic preparation, or a cosmetic product according to any one of the preceding points for preventing and/or reducing body odor.
A non-therapeutic cosmetic method for preventing and/or reducing body odor, in which a cosmetic agent according to any one of the preceding points is applied to the skin, in particular the skin of the armpits, and is left on the skin for at least about 1 hour, preferably for at least about 2 hours, preferably for at least about 4 hours, and in particular for at least about 6 hours.
The following detailed description is merely exemplary in nature and is not intended to limit the disclosure or the application and uses of the subject matter as described herein. Furthermore, there is no intention to be bound by any theory presented in the preceding background or the following detailed description.
A first constituent of the antiperspirant cosmetic agent as contemplated herein is the copolymer a). With regard to the producibility, application properties and cosmetic effect of cosmetic compositions as contemplated herein, it has proven to be advantageous if the proportion by weight of the copolymer a) in the total weight of the agent is from about 1.0 to about 10% by weight, for example from about 3.0 to about 7.0% by weight.
The copolymer a) can be attributed to the monomers i) N-tert-octylacrylamide, ii) acrylic acid, iii) tert.-butylaminoethyl methacrylate and optionally further monomers.
Suitable copolymers a) include to an extent of at least about 90% by weight, for example at least about 95% by weight, and in particular at least about 97% by weight or even completely of the monomers N-tert-octylacrylamide, acrylic acid and tert.-butylaminoethyl methacrylate.
Particularly suitable are copolymers a) formed from the monomers i) N-tert-octylacrylamide, ii) acrylic acid, iii) tert.-butylaminoethyl methacrylate, iv) methyl methacrylate and v) hydroxypropyl methacrylate.
The previously described copolymers a) are for example sold under the name Amphomer® (INCI name: Octylacrylamide/Acrylates/Butylaminoethyl Methacrylate Copolymer; CAS number 70801-07-9) by the company National Starch.
A further subject matter of the present patent application is a cosmetic agent including at least one copolymer a) formed from the monomers
As second essential constituent b), the cosmetic agents contain from about 40 to about 75% by weight of oil that is liquid at about 20° C. and about 1.013 hPa. The term “oil” denotes substances that are immiscible with water.
Particularly suitable cosmetic agents contain at least one oil that is liquid at about 20° C. and about 1.013 hPa, from the group of
The use of oil from the group of silicone oils, for example from the group of dialkyl and alkylaryl siloxanes, in particular from the group of cyclopentasiloxane, cyclohexasiloxane, dimethylpolysiloxane, and methylphenylpolysiloxane is very particularly suitable, wherein cyclopentasiloxane is suitable in particular.
Deodorizing cosmetic agents according to any one of the preceding points, wherein the oil, in relation to the total weight of the agent, is contained in an amount of from about 25 to about 70% by weight, for example from about 35 to about 55% by weight.
The cosmetic agents do not contain any aluminium-containing compounds. The term “aluminium-containing compounds” is understood within the scope of the present disclosure to mean antiperspirant aluminium salts and aluminium-zirconium salts.
Suitable cosmetic agents, in addition to the oil, also contain hydrophilic organic solvent as further carrier.
A particularly advantageous cosmetic effect could be achieved with agents that contain, in relation to their total weight, from about 10 to about 60% by weight, for example from about 15 to about 50% by weight, and in particular from about 20 to about 40% by weight of hydrophilic organic solvent.
Suitable hydrophilic organic solvents are selected from the group of ethanol and propylene carbonate.
In the case of cosmetic agents containing ethanol, the ethanol content in the total weight of the agent is for example from about 10 to about 50% by weight, for example from about 14 to about 46% by weight, and in particular from about 18 to about 42% by weight. By contrast, the proportion by weight of the propylene carbonate in the total weight of suitable cosmetic agents is from about 0.5 to about 4.0% by weight, for example from about 1.0 to about 3.5% by weight, and in particular from about 1.5 to about 3.0% by weight propylene carbonate.
The cosmetic agents are preferably formulated with a low water content or are anhydrous. Suitable deodorizing cosmetic agents contain, in relation to the total weight of the agent, water in amounts of less than about 5.0% by weight, preferably of less than about 3.0% by weight, and in particular of less than about 1.0% by weight.
A technical parameter that has proven to be of relevance for the cosmetic effect of the agents as contemplated herein is the vapour pressure these agents. Cosmetically particularly advantageous cosmetic agents have a vapour pressure (about 20° C.) of from about 1.0 to about 3.0 kPa, preferably of from about 1.2 to about 2.7 kPa, and in particular of from about 1.4 to about 2.5 kPa auf.
The composition of a suitable cosmetic agent can be inferred from the following tables (values in % by weight in relation to the total weight of the cosmetic agent unless specified otherwise).
Besides the above-described ingredients, the deodorizing cosmetic agents can also contain further active substances and auxiliaries. For example, enzyme inhibitors belong to the group of these further active substances and auxiliaries.
Suitable enzyme inhibitors are for example esterase inhibitors. These are preferably trialkyl citrates, such as trimethyl citrate, tripropyl citrate, triisopropyl citrate, tributyl citrate, and in particular triethyl citrate (Hydagen® CAT). The substances inhibit enzyme activity and thus reduce the development of odor. Further substances which can be considered as esterase inhibitors are sterol sulfates or phosphates, such as lanosterol, cholesterol, campesterol, stigmasterol and sitosterol sulfate or phosphate, dicarboxylic acids and esters thereof, such as glutaric acid, glutaric acid monoethyl ester, glutaric acid diethyl ester, adipic acid, adipic acid monoethyl ester, adipic acid diethyl ester, malonic acid and malonic acid diethyl ester, hydroxycarboxylic acids and esters thereof, such as citric acid, malic acid, tartaric acid or tartaric acid diethyl ester, and zinc glycinate. Particularly suitable enzyme inhibitors are selected from the group of trialkyl citric acid esters, for example from triethyl citrate or zinc glycinate, in particular triethyl citrate.
Suitable agents contain, in relation to their total weight, from about 2.0 to about 20% by weight, for example from about 4.0 to about 16% by weight, and in particular from about 8.0 to about 12% by weight of enzyme inhibitor.
The composition of cosmetic agents that are more suitable can be inferred from the following tables (values in % by weight in relation to the total weight of the cosmetic agent unless specified otherwise).
A further group of optional active substances and auxiliaries is constituted by thickeners, which are used to adjust viscosity. The thickener is different from the copolymer and oil constituents contained mandatorily in the cosmetic agents. A particularly suitable thickener is constituted by the hydrophobically modified silicates, in particular the hydrophobised hectorites, particularly preferably the hydrophobised hectorites with the INCI name Quaternium-18 Hectorite, as are sold for example under the trade name Bentone 38 (Elementis).
Suitable cosmetic agents contain the thickener, in particular the hydrophobically modified silicates, particularly preferably the hydrophobised hectorite in amounts of from in amounts of from about 0.5 to about 10% by weight, preferably of from about 1.0 to about 9.0% by weight, and in particular von from about 4.0 to about 8.0% by weight, in each case in relation to the total weight of the cosmetic agent.
The composition of further suitable cosmetic agents is presented in the following tables (values in % by weight in relation to the total weight of the cosmetic agent unless specified otherwise).
Cosmetic agents which consist largely of copolymer, oil, hydrophilic organic solvent, enzyme inhibitor and thickener have proven to be very effective. For reasons of cosmetic efficacy and with the objective of minimising the complexity of the production of these agents, it is therefore suitable that the deodorizing cosmetic agent, in relation to its total weight, of at least about 80% by weight, for example at least about 90% by weight, and in particular at least about 95% by weight
The composition of cosmetic agents that are very particularly suitable can be inferred from the following tables (values in % by weight in relation to the total weight of the cosmetic agent unless specified otherwise).
The deodorizing cosmetic agent can be applied by employing various methods. In accordance with a suitable embodiment the sweat-inhibiting cosmetic agent is formulated for spray-on application. The spray-on application is implemented using a spraying device, which contains a filling formed of the deodorizing cosmetic agent in a container. The filling can be performed under the pressure of a propellant (pressurised gas cans, pressurised gas packagings, aerosol packagings), or it can involve a pump atomiser that is to be operated mechanically, without propellant (pump spray/squeeze bottle). The use of a propellant, however, is suitable. Suitable cosmetic preparations therefore include, in addition to the cosmetic agent i), also at least one propellant ii).
Suitable propellants (propellant gases) are propane, propene, n-butane, iso-butane, iso-butene, n-pentane, pentene, iso-pentane, iso-pentene, methane, ethane, dimethyl ether, nitrogen, air, oxygen, nitrous oxide, 1,1,1,3-tetrafluoroethane, heptafluoro-n-propane, perfluoroethane, monochlorodifluoromethane, 1,1-difluoroethane, more specifically both individually and in combination. Hydrophilic propellant gas, such as carbon dioxide, can be used advantageously in the sense of the present disclosure if the proportion of hydrophilic gases is selected to be low and lipophilic propellant gas (for example propane/butane) is present in excess. Particularly suitable are propane, n-butane, iso-butane, and mixtures of these propellant gases. Suitable cosmetic agents are exemplified in that the agent is combined with at least one propellant b) from the group of mixtures of propane and butane and dimethyl ether.
Suitable cosmetic preparations include, in relation to their total weight
Vessels made of metal (aluminium, tinplate, tin), protected plastic or non-splintering plastic, or glass coated externally with plastic are potential pressurised gas containers for aerosol applications, wherein the compressive strength, breaking strength, corrosion resistance, ease of filling and also aesthetic considerations, ease of handling, printability, etc. play a role when selecting such a vessel. Special internal protective coatings ensure resistance to corrosion in respect of the cosmetic agent a).
If the agents as contemplated herein are to be sprayed, these agents are advantageously provided with a dispensing device and a spray valve. The resultant cosmetic products include accordingly a cosmetic agent as contemplated herein or a cosmetic preparation as contemplated herein, and also a dispensing device having a spray valve.
A further subject of the claims is a non-therapeutic cosmetic method for preventing and/or reducing body odor, in which a cosmetic agent as contemplated herein is applied to the skin, in particular the skin of the armpits, and is left on the skin for at least about 1 hour, preferably for at least about 2 hours, preferably for at least about 4 hours, and in particular for at least about 6 hours.
As mentioned at the outset, the cosmetic agents have an advantageous influence on the formation of body odor. The use of this cosmetic agent for preventing and/or reducing body odor is a further subject of the present application.
The following sprayable antiperspirant suspensions were produced (values in % by weight):
1) INCI name: Octylacrylamide/Acrylates/Butylaminoethyl Methacrylate Copolymer
2) INCI name Quaternium-18 Hectorite
The formulations were filled into aerosol cans together with the propellant propane/butane (15/85) in a weight ratio of 1:4.
While at least one exemplary embodiment has been presented in the foregoing detailed description, it should be appreciated that a vast number of variations exist. It should also be appreciated that the exemplary embodiment or exemplary embodiments are only examples, and are not intended to limit the scope, applicability, or configuration of the various embodiments in any way. Rather, the foregoing detailed description will provide those skilled in the art with a convenient road map for implementing an exemplary embodiment as contemplated herein. It being understood that various changes may be made in the function and arrangement of elements described in an exemplary embodiment without departing from the scope of the various embodiments as set forth in the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10 2016 208 860.2 | May 2016 | DE | national |
This application is a U.S. National-Stage entry under 35 U.S.C. § 371 based on International Application No PCT/EP2017/059593, filed Apr. 24, 2017 which was published under PCT Article 21(2) and which claims priority to German Application No. 10 2016 208 860.2, filed May 23, 2016, which are all hereby incorporated in their entirety by reference.
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/EP2017/059593 | 4/24/2017 | WO | 00 |
