CN1204250A - Underarm compositions - Google Patents

Abstract

A substantially anhydrous underarm cream composition suitable for topical application to the human skin, comprising an antiperspirant and/or deodorant agent, a non-volatile masking agent, and a structuring wax having the general formula: R - (SiMe2-O-)x SiMe2R where X = 10-50, Me = CH3 wherein R is an alkyl group and the average terminal alkyl chain length is at least C30.

Description

Underarm composition

The present invention relates to new cream oxter compositions, said composition contains structure wax material.Especially, the present invention relates to the antiperspirant deodorant compositions that the part is used for human body skin, said composition contains structure wax.

The underarm composition of known local usefulness contains for example polysiloxane of non-volatile polysiloxane fluid, and described polysiloxane fluid makes compositions have lubrication, and the solid that exists in the compositions is had masking action.Described solid example comprises hidroschesis active matter matter.The effect of said composition can not be subjected to having a strong impact on of non-volatile polysiloxanes.The example of described compositions is seen EP 28853 (Procter﹠amp; Gamble company).

But many content of wax prescriptions of prior art produce visible deposition on skin and fabric in the sensation of improving some aspect of skin (for example reducing wet sensation).

In order to address this problem, EP 135315 (Mennen company) has described no clay antiperspirant products, and this product contains Y 7175 and gellant.Yet, lack deflocculating agent and can make product, and viscosity reduces, and that the reduction of viscosity is a cream is undesirable at high temperature and long-time still unstable down.

Known some the alkylsiloxane wax that in underarm composition, also comprises.That EP 549223 (DowCorning) has described is bar-shaped, walk pearl and spraying uses underarm composition, said composition to contain some chain alkyl silicone waxes.It is said that this wax provides required characteristic for prescription, for example the hardness of Gai Shaning, contrast (reduced) brighten, improve dermal sensation and with the compatibility of other components.

The objective of the invention is to overcome the defective of prior art formula.

The invention provides the anhydrous basically oxter cream composition that suitable part is used for human body skin, said composition contains hidroschesis and/or deodorizer, non-volatile screening agent and has the structure wax of following general formula:

R-(SiMe ₂-O-) _xSiMe ₂R, X=10-50 wherein,

The Me=methyl, wherein R is an alkyl, and average end alkyl chain length is at least C30.

Preferably, this underarm composition contains the structure wax of 3%-20% (weight).More preferably, said composition contains 5-15% (weight) structure wax.Preferably, R is the C25-C40 alkyl.

Preferably this underarm composition also contains the non-volatile oil of sheltering.Describedly shelter grease separation from non-volatile polysiloxanes and polyolefin or its mixture.

Preferred polyolefin is a poly decene.

In addition, this underarm composition also contains volatile carrier fluids.Suitable volatile carrier fluids is a Y 7175.

Preferred antiperspirant is inorganic and/or organo-aluminium and zirconates or its mixture.

Suitable is that structure wax and Arrcostab siloxane wax, insecticide and animal wax, fatty acid, aliphatic alcohol, fatty acid ester are mixed with fatty acid amide and composition thereof and is in the same place.

Another program of the present invention provides anhydrous basically cream antiperspirant composition, and said composition contains that 5-30% (weight) antiperspirant salts, 5%-25% (weight) are non-volatilely sheltered oil, 3-25% (weight) has the structure wax and 20-87% (weight) volatile carrier fluids of following general formula

R-(SiMe ₂-O-) _xSiMe ₂R, X=10-50 wherein,

The Me=methyl,

R is an alkyl, and average end alkyl chain length is at least C30.

Usually, with penetration number definition cream.Typical cream can be described as having about 10 millimeters to 30 millimeters penetration number, and wherein Zhui diameter is that 16.5 millimeters, weight are 102.5 to restrain.

Find unexpectedly that now the alkylsiloxane wax by selection has specific alkyl feature can obtain having underarm composition required viscosity characteristics, long-term and at high temperature stable.And said composition does not have any undesirable characteristic, for example bad dermal sensation and the aforementioned deposition relevant with the underarm composition that contains alkylsiloxane wax.

Normally used antiperspirant salts comprises inorganic and organo-aluminium and zirconates and composition thereof.Particularly preferably be aluminum/zirconates, hydroxyhalides, aluminum zirconates of aluminum halide and composition thereof.Particularly preferred hidroschesis salt comprises the described active aluminium chlorohydrate chemical compound as EP 6739 (Unilever NV etc.).Other hidroschesis active matter matter has been described in EP 28853.The content of these applications all is incorporated herein by reference.

Any effective deodorizer component known in the art all is suitable for mixing in the said composition, and they are for example sodium bicarbonate, zinc ricinate, other inorganic salts, short chain monocarbon alcohol, polyhydric alcohol or for example such chemical compound of trichloro hydroxyl diphenyl ether.Deodorizer can use separately or be used in combination with the hidroschesis active component compatible with it.

The carrier fluid that is suitable for comprises the Y 7175 material.The example of this material is ring-type or linear polydimethylsiloxane-.Preferred Cyclomethicone has 3-7 silicon atom, and 25 ℃ viscosity is less than 10mm ²s ^-1(cSt).Preferred linear polydimethylsiloxane-has 3-9 silicon atom, and 25 ℃ viscosity is less than 5mm ²s ^-1Preferred polydimethylsiloxane is the Dow Corning 344 and 345 that Dow Corning company provides.If use Y 7175 in compositions, then its content is preferably 30-60% (weight), more preferably 40-60% (weight).

In this prescription, also contain non-volatile screening agent, and preferably contain for example polyolefin of hydrocarbon polymer.

Polyolefin is the hydrocarbon polymer that suits, and preferred polyolefin is a liquid in room temperature (promptly 21 ℃).Particularly preferred polyolefin has lower viscosity in the present composition.Preferably, the viscosity of polyolefin screening agent 40 ℃ less than about 40 cSt, more preferably at 40 ℃ less than about 30 cSt.

Preferably, polyolefin comprises polyalphaolefin.The polyalphaolefin that is used for the present composition is preferably poly decene, for example the Silkflo series poly decene of being made by Albermarle company.The polybutene sold with trade name PanaleneL14E by Amoco and the polyisobutylene that can be provided with trade name Permethyl by Prespere are provided other preferred polyolefm that are used for the present composition.

Thus, the polyolefin that is preferred for the present composition can have the monomer chain length that contains 3-15 carbon atom, and can contain one or two two key in its non-polymeric form.Preferred commercially available polyolefin blend can contain various polymer usually, comprises the mixture of dimer, trimer etc.Sillkflo 362NF, Silkflo 364NF and the Silkflo 366NF that is provided by Albermarle company is provided such material that is preferred for the present composition.

When described polyolefin is used for the present composition, it helps to make said composition to have beat all good feel character, comprise the greasy feeling that unexpectedly lacks after using, if said composition is an antiperspirant composition, then polyolefin can be strengthened the masking action of any white that hidroschesis salt in the compositions is brought.

Use polyolefinic advantage to be: not find that as yet they can the serious effect of disturbing any hidroschesis active salt in the compositions.

The non-volatile oil of sheltering with emollient effect also can be non-Y 7175.This non-volatile polysiloxanes can be poly-alkylsiloxane, poly-alkaryl siloxanes or polyether siloxane copolymer.Preferred poly-alkylsiloxane is 10-100000 mm 25 ℃ of viscosity ²s ^-1(cSt).Described siloxanes is Dow Corning 200 series of being sold by Dow Corning company.

Suitable poly-alkaryl siloxanes is to be 15-65mm 25 ℃ of viscosity ²s ^-1(cSt) PSI.These siloxanes are sold with Dow Corning 556 fluids.

Suitable polyether silicone is to be 1200-1500mm 25 ℃ of viscosity ²s ^-1(cSt) dimethyl polyoxy alkylidene ether copolymer, for example polysiloxanes glycol ether copolymer.

Used structure wax typically refers to the alkyl methyl siloxanes.Suitable alkyl methyl siloxanes comprises those with logical formula I:

R-(SiMe ₂-O-) _xSiMe ₂R is X=10-50 Me=methyl wherein, and R has the long alkyl of C30 mean alkyl chain at least.

Be important to note that the material that is fit to is made up of end alkyl segment (chain lengths) mixture usually.For purpose of the present invention, it is necessary that average end alkyl chain length is at least C30.Therefore, suitable structure wax can have the alkyl segment that is lower than C30, but average chain length must be at least C30.

Selected wax with terminal long alkyl chain is in that to give the compositions configuration aspects particularly effective.Pendant C30 and above series thereof and C16 to C18 end alkyl wax cause solid too soft sometimes, and this can make after adding heat-storage and to keep stable structure to sink into failure, the result be rare compositions.When average end alkyl chain length is lower than C30 for example during C24-C28, also run into same difficulty.

Preferred alkyl methyl siloxane wax is known, is sold with GE waxSF1642 by General Electric, and wherein main alkyl is C30, C32 and C34, and a small amount of alkyl is C26 and C28.Average end alkyl chain length is at least C30.

Found that structure wax has significant masking action to prescription, to shelter the deposition of active substance and suspending agent.Preferred alkyl methyl siloxane wax has the fusing point greater than 45 ℃.

Preferably, the alkyl methyl siloxane wax is formed, more preferably is made up of C25 to C35 alkyl by C16 to C40 alkyl.

Usually, described wax is made up of the alkyl segment with wax characteristic (chain lengths) mixture, therefore can measure its structure effect by mixing used segment.

Can mix other structural agent waxy substances that together use with alkylsiloxane wax is high and low melt wax, glue, resin, polymer, starch and elastomer.High melting-point wax comprises insecticide and animal wax, for example Cera Flava and spermaceti; Vegetable wax is Brazil wax, candelilla wax, ouricury wax, Japan wax, Pseudotsuga menziesii (Mirbel) Franco bark wax, rice bran wax, castor wax and laurel wax for example; Mineral wax is montan wax, peat wax, ceresine and ceresin for example; Pertroleum wax is paraffin for example; Synthetic wax is the chloroflo of Fischer-Tropsch wax, Tissuemat E, chemical modification and the amide waxe of replacement for example.The example of low melt wax comprises fatty acid, aliphatic alcohol, fatty acid ester and the fatty acid amide of the carbochain with 3-30 carbon atom.Particularly preferred low melt wax comprises stearyl alcohol, spermol, myristyl alcohol and Palmic acid.

The wax structural agent can be the mixture of the wax of single wax or above-mentioned selection, so that required fusing point and dermal sensation characteristic to be provided.For example, it is effective especially that 6%SF1642 is combined with 5% castor wax MP80, and gained wax structural agent is in about 45 ℃ of shearings.

Embodiment

Embodiment 1

Preparation has the anhydrous hidroschesis frost of following prescription: composition function % by weight AZAG (powder) antiperspirant 24.0 castor wax MP80 structural agent 5.0GE SF1642 (1229-425) silicone waxes and dry and comfortable auxiliary agent 6.0 essence 1.0 of deposition 6.0 screening agent Y 7175 carrier fluids 44.0 fixed hydrocarbons deposition screening agent 14.0 (Albemarle Silkflo 364NF) talcum (Suprafino) dermal sensation

Silkflo is added in the Y 7175, start agitator, and be heated to 66 ℃ and prepare cream to Half Speed.Got various powder mixes 5 minutes.Add finish after, with mixture reheat to 66 ℃.80 ℃ with the wax pre-fusion, under stirring at full speed, it is being added in the main reactor then.Add essence and sheared 5 minutes at 68-70 ℃.

Comparing data (processing):

When at 68 ℃ of processing above-mentioned compositions, sheared 10 minutes, then 55 ℃ of fillings, obtain the compositions that viscosity is 220000csp.When at 68 ℃ of processing and filling product, to mix as mentioned above 10 minutes, the viscosity of resulting composition is 360000cps.

Claims (12)

1. a suitable part is used for the anhydrous basically oxter cream composition of human body skin, and said composition contains hidroschesis and/or deodorizer, non-volatile screening agent and has the structure wax of following general formula:

R-(SiMe ₂-O-) _xSiMe ₂R, X=10-50 wherein,

The Me=methyl, wherein R is an alkyl, and average end alkyl chain length is at least C30.

2. the underarm composition of claim 1 is characterized in that said composition contains the structure wax of 3%-20% (weight).

3. the underarm composition of claim 2 is characterized in that said composition contains the structure wax of 5%-15% (weight).

4. the underarm composition of any one among the claim 1-3 is characterized in that R is the C25-C40 alkyl.

5. the underarm composition of any one among the claim 1-4 is characterized in that said composition also contains the non-volatile oil of sheltering.

6. the underarm composition of claim 5 is characterized in that non-volatilely sheltering grease separation from non-volatile polysiloxanes and polyolefin or its mixture.

7. the underarm composition of claim 6 is characterized in that polyolefin is a poly decene.

8. the underarm composition of claim 7, it also contains volatile carrier fluids.

9. the underarm composition of any one among the claim 1-8 is characterized in that volatile carrier fluids is a Y 7175.

10. the underarm composition of any one among the claim 1-9 is characterized in that antiperspirant is inorganic and/or organo-aluminium and zirconates or its mixture.

11. the underarm composition of any one among the claim 1-10 is characterized in that structure wax and Arrcostab siloxane wax, insecticide and animal wax, fatty acid, aliphatic alcohol, fatty acid ester are mixed with fatty acid amide and composition thereof and is in the same place.

12. an anhydrous basically cream antiperspirant composition, said composition contain, and 5-30% (weight) antiperspirant salts, 5%-25% (weight) are non-volatilely sheltered oil, 3-20% (weight) has the structure wax and 20-87% (weight) volatile carrier fluids of following general formula

R-(SiMe ₂-O-) _xSiMe ₂R, X=10-50 wherein,

The Me=methyl,

R is an alkyl, and average end alkyl chain length is at least C30.