DE9212733U1 - Liquid body cleanser - Google Patents

Description

Liquid body cleanser

The present invention relates to a liquid aqueous-based body cleansing composition, in particular bubble bath compositions, shower gels or shampoos for washing the hair, which have a stable foaming power when applied with water and have a conditioning effect on skin and hair and, in particular, when applied to dry hair, make it soft and supple.
This object is achieved according to the invention by adding to an aqueous-based body cleansing agent containing about 5 to about 50% by weight of at least one anionic surfactant, calculated on the total composition, about 0.05 to about 5% by weight, preferably 0.1 to 4% by weight, in particular about 0.2 to 3% by weight of at least one long-chain alkylmethicone copolyol of the formula

CH.

CH.

-k-

CH.

_CH3

O -Si
L-.RI

CH.

O — Si-r

CH.

0—Si—CH.

wherein R is an alkyl group having 8 to 20 carbon atoms, R

a polyether group with 1 to 60 ethylene oxide and/or

propylene oxide units, and &khgr; and y are numbers from 1 to 500.

The alkylmethicone copolyol used according to the invention preferably has a molecular weight of about 22,000 to about 32,000.

The alkyl group R is preferably a lauryl radical, a C ₁₂ -C...-alkyl radical, a cetyl radical, a C^-alkyl radical or a C...'-alkyl radical, but broad alkyl group distributions are also suitable.

The polyol substitution is preferably 1, 3, 5, 10 or 25 mol%; the ethylene or propylene oxide content in the polyether is 12EO, 18 EO/18 PO or 24EO/24PO.

x is preferably a number between 60 and 245; y between 1 to 25; the total number of siloxane units is preferably 60, 90, 145, 200 or 245.

Laurylmethicone copolyol is preferred.

A corresponding product is sold by Dow Corning Co. under the name "Dow Corning Q2-5200".

Another preferred alkyl-modified methicone copolyol is one that contains a polyether radical R

-(CH ₂ JO- (C ₂ H ₄ O) _1n -(C ₃ H ₆ O) ₂ X

where η is 0 to 5 and the sum of m+z is 1 to 60 , and X is preferably H or a C1-C4-alkyl group. R then represents an alkyl group having 14 to 16 carbon atoms.

In addition to the improved conditioning and hair or skin smoothing properties, the addition of alkylmethicone copolyol allows liquid compositions to be produced that are improved in their transparency.
Suitable anionic surfactants in the liquid body cleansing agents according to the invention are in particular those which are usually used in such products, for example the known C, _Q -C.. _g -alkyl sulfates and in particular the corresponding ether sulfates, for example Cp-C. 4-alkyl ether sulfate, lauryl ether sulfate, in particular with 1 to 4 ethylene oxide groups in the molecule, furthermore monoglyceride sulfates, fatty acid amide sulfates which are obtained by ethoxylation and subsequent sulfation of fatty acid alkanolamides, alkyl ether carboxylic acids and their alkali salts and salts of long-chain mono- and dialkyl phosphates, which are mild, skin-compatible detergents.

Another preferred class of anionic surfactants are long-chain acyl sarcosinates or their alkali salts, for example sodium lauroyl sarcosinate.

Anionic surfactants that are also suitable within the scope of the invention are alpha-olefin sulfonates or their salts and in particular alkali metal salts of sulfosuccinic acid semiesters, for example the disodium salt of monooctyl sulfosuccinate and alkali metal salts of long-chain monoalkylethoxy sulfosuccinates.

It is particularly useful to use mixtures of several anionic surfactants, for example a mixture of an alpha-olefin sulfonate and a sulfosuccinate, preferably in a ratio of 1:3 to 3:1.

Protein-fatty acid condensation products of known structure can also be used in a mixture with other anionic surfactants, in particular in amounts between about 0.5 and 5, preferably 1 to 3% by weight of the total composition of the liquid body cleanser.

An overview of the anionic surfactants used in liquid body cleansing products can be found in the monograph by K. Schrader, Fundamentals and Recipes of Cosmetics, 2nd edition (1989, Hüthig Buchverlag), pp. 683 to 691.

The preferred range of amounts of anionic surfactants in the liquid personal cleansing agents according to the invention is between about 5 and about 35% by weight, in particular about 7.5 to about 25% by weight, particularly preferably about 10 to about 20% by weight, calculated on the total composition of the agent.
According to a preferred embodiment of the invention, the liquid body cleansing agent additionally contains about 1 to about 15% by weight, preferably about 2.5 to about 10% by weight, calculated on the total composition, of at least one nonionic surfactant.

A preferred nonionic surfactant belongs to the class of alkyl polyglucosides of the general formula

-5-

wherein R is an alkyl group having 8 to 18 carbon atoms, R
an ethylene or propylene group, Z is a saccharide residue with
5 to 6 carbon atoms, η is a number from 0 to 10, and &khgr; is a number between 1 and 2.5.

These alkyl polyglucosides have recently become known in particular as excellent skin-compatible foam-enhancing agents in liquid detergents and body cleansers.
Although alkyl polyglucosides of the above general formula are preferred as nonionic surfactants in the compositions according to the invention, it is also possible to use other nonionic surfactants instead of them or, preferably together with them. Amine oxides, for example lauryldimethylamine oxide or coconut di-(hydroxyethyl)amine oxide, are particularly suitable as such.

Other non-ionic surfactant components include long-chain fatty acid mono- and dialkanolamides such as coconut fatty acid monoethanolamide and myristic fatty acid monoethanolamide, which can also be used as foam enhancers.
and the various sorbitan esters, such as polyethylene glycol sorbitan stearic acid esters, fatty acid polyglycol esters or
Mixed condensates of ethylene oxide and propylene oxide, such as those sold under the trade name "Pluronics".

-6-

The compositions according to the invention can also contain amphoteric surfactants, preferably in an amount of 0.5 to about 5% by weight, based on the total composition. Examples of such surfactants include the various known betaines such as fatty acid amidoalkyl betaines and sulfobetaines, for example laurylhydroxysulfobetaine; long-chain alkyl amino acids have also proven to be suitable.
A list of suitable amphoteric surfactants can be found in Schrader, Ie, pp. 598 to 600.

Mixtures of anionic surfactants and alkyl polyglucosides, the preferred non-ionic surfactants in the context of the invention, as well as their use in liquid body cleansing agents, are already known per se, for example from EP A-70 074.

The alkylpolyglucosides described therein are in principle also suitable within the scope of the present invention; as are the mixtures of sulfosuccinates and alkylpolyglucosides known from EP-A 358 216.

The liquid body cleansing agents according to the invention can of course contain all the usual substances used in such agents.

-7-

These include complexing agents, dyes, preservatives, pH regulators, viscosity regulators such as inorganic salts, insofar as they are not already contained in the surfactant starting mixtures, fragrances, pearlescent agents, thickeners, humectants, vegetable and animal oils such as jojoba oil, etc.

A list of such additives can also be found in Schrader, I.e., for foam and shower gel additives on pages 596 to 620 and for shampoos on pages 695 to 722.

Particularly suitable additives for shampoos are hair conditioning agents. As such, in particular cationic polymers are used, preferably in an amount between 0.1 to 2, in particular 0.25 to 1.25 wt.% of the total composition.

The use of cationic polymers with alkylpolyglucoside surfactants is already known from EP-A 337 354; the cationic polymers listed there on pages 3 to 7 are also suitable as conditioning additives in the compositions according to the invention.

Further conditioning additives are the known protein hydrolysates, for example in an amount of 0.25 to 5% by weight, preferably 0.5 to 2.5% by weight of the total composition.
Water-soluble collagen or water-soluble collagen derivatives are also suitable.

Finally, as is also already known, various other polysiloxanes can also be used as conditioning agents in the liquid body cleansing agents according to the invention.

The preferred proportion is between about 0.5 and about 5, in particular 1 to 3% by weight of the total composition. Both highly volatile and non-volatile cyclic or linear polysiloxanes are suitable, for example the silicone oils known by the trivial name "dimethicone" or "phenyldimethicone" and "cyclomethicone".

Also suitable, for example, are the silicone derivatives described in EP-A 398 177, which are used there in combination with alkyl polyglucosides in liquid detergent compositions.

It is also expedient to use triglycerin and/or diglycerin as an additional conditioner and moisturizer, preferably in an amount of about 0.2 to about 6% by weight, based on the total composition.
If the compositions according to the invention are shampoos, they can also contain dyes for the direct or oxidative coloring of hair, i.e. so-called tinting or coloring shampoos.

The following examples serve to illustrate the invention.
The products according to the invention are prepared by stirring the individual components together in water, whereby premixes of different components can also be used.

6.0 6.0 (wt.%) 4.0 4.0 6.0 6.0 1.5 1.5 0.5 0.5 3.0 _

-9- Example IA and IBt Shampoo Base Formula

IA IB

Disodium lauryl ether sulfosuccinate

Alpha-Cj.-C^g-Olefinsulfonate

C _g -C,,-alkyl polyglucoside (PG =<1,4)

Lauryldimethylamine oxide

Laurylhydroxysultain

Dimethylpolysiloxane

(Dimethicone)

Laurylmethicone Copolyol - 3.0

("Dow Coming Q2-5200")

Triethylene glycol distearate 3.0 3.0

Water ad 100.0 100.0

In a comparative test on 12 people with comparable hair structure, the hair of 6 subjects was washed with composition IA and the other 6 subjects with composition IB and the condition of both the wet and dried hair was checked and assessed "blindly" by 2 hairdressers each.

-10-

The consistent result was the following assessment:

IA IB

Wet Hair: Heavy Soft

Dry hair: Too oily; Light and soft;

little volume fullness and shine

This assessment clearly shows the superiority of the composition according to the invention.

Example 2: Shampoo for long hair

Disodium lauryl ether sulfosuccinate 6.00 (wt.%)

Caprylyl/Caprylglucoside 5.00

Sodium-C. .-Cj^g-olefin sulfonate 4.00

Dimethyllaurylamine oxide 1.50

Lauryl hydroxysultaine 0.50

Glyceryl caprate 1.00

Laurylmethicone Copolyol 0.55

Amodimethicone 0.10

Cationic polymer (Polyquaternium 7) 2.10

Triethylene glycol distearate 3.00

Citric acid 0.25

Complexing agent 0.20

Preservatives (parabens) 0.25

Perfume 1.00

Water ad 100.00 Washing your hair with this shampoo resulted in soft, loose hair with volume and shine.

-11- Example 3: Shampoo for fine hair

Disodium lauryl ether sulfosuccinate 8.0 (wt.%)

Cg-C^^-alkylpolyglucoside (P.G.: 1.5) 6.0

Diethyllaurylamine oxide 2.0

Lauryl hydroxysultaine 3.0

Sodium lauroyl sarcosinate 2.0

Laurylmethicone Copolyol 0.2

Triglycerol 0.2

Cationic polymer (Polyquaternium 7) 0.5

Polyethylene glycol-5-octanoate 0.5

Polyethylene glycol-60-sorbitan tristearate 1.0

Citric acid 0.4

Preservatives (parabens) 0.3

Complexing agent 0.5

Perfume 0.5

Water ad 100.0

This shampoo also gave fine hair fullness, shine and softness.

4. Shower gel

Sodium lauryl ether sulfate 20.0 wt.%)

Lauryldimethylamine oxide 2.5

Coconut fatty acid monoethanolamide 2.5

Cocoamidopropyl betaine 3.0

Cn-C, . -Fatty acid monoglyceride 2.5

Laurylmethicone Copolyol 2.5 ("Dow Coming Q2-5200")

Perfume 0.5

Preservative 0.2

Dye q.s. Water ad 100.00

After using this shower gel, you will notice a pleasant, soft skin feeling.

Claims (7)

Expectations 1. Liquid aqueous body cleansing agent based on about 5 to about 50% by weight, calculated on the total composition, of at least one anionic surfactant, characterized in that it contains about 0.05 to about 5% by weight, calculated on the total composition, of at least one long-chain alkylmethicone copolyol of the formula CH. CH-,- Si &mdash; ³ I CH-CH, 1 ³ 0&mdash; Si R &mdash;J 0 — Si — CH. 0- Si- CH. CH 3, wherein R is an alkyl group having 8 to 20 carbon atoms, R is a polyether group having 1 to 60 ethylene oxide and/or propylene oxide units, and x and y are a number from 1 to 500 . 2. Liquid body cleansing agent according to claim 1, characterized in that R represents a cetyl, lauryl or cocoyl radical. 3. Liquid body cleansing agent according to claim 1 or 2, characterized in that x is a number from 60 to 245 and y is a number from 1 to 25. -2- 4. Liquid body cleansing agent according to one or more of the preceding claims, characterized in that the polyether group R has 12 ethylene oxide units, 18 ethylene oxide and propylene oxide units each or 24 ethylene oxide and propylene oxide units each. 5. Liquid body cleansing agent according to one or more of the preceding claims, characterized in that the polyether radical R is a group (CH ₂ ) _n -O-(C ₂ H ₄ 0) _m - (C ₃ HgO) ₂ X, in which η is 0 to 5 and the sum of m+z is 1 to 60, and X is H or a Cl-C4-alkyl group. 6. Liquid body cleansing agent according to one or more of the preceding claims, characterized in that it additionally contains about 1 to about 15 l by weight, calculated on the total composition, of at least one non-ionic surfactant. 7. Liquid body cleansing agent according to claim 6, characterized in that it contains about 2.5 to about 10% by weight of an alkyl polyglucoside of the formula RO-(R ¹ O) _n -Z^ wherein R is an alkyl group having 8 to 18 carbon atoms, R is an ethylene or propylene group, Z is a saccharide residue having 5 to 6 carbon atoms, η is a number from 0 to 10, and χ is a number between 1 and 2.5.