JP2001213740A - Detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a detergent capable of keeping the head skin clean, and having good performance of removing pegs of pores of the head skin, while satisfying the indispensable condition as detergents such as foaming property and washing property. SOLUTION: The detergent composition is characterized containing at least one kind of the nonionic surface-active agent and the ionic surface-active agent which have liquid appearance at 25 deg.C and which have an HLB in the range of 6-10 and a fatty acid isopropanol amide in which the number of average carbon of acyl group is 8-20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is excellent in removing keratotic plugs from pores on the scalp while satisfying essential conditions as a cleaning agent such as foaming property and detergency, and is capable of keeping the scalp clean. It relates to a possible cleaning composition.

[0002]

2. Description of the Related Art In order to keep hair beautiful, it is important for hair care to keep the scalp and hair clean. The scalp and hair are the most easily soiled parts of the body, and sebum is constantly secreted from sebaceous glands. A sebum film is formed by mixing with sweat. In addition, since the scalp and hair are exposed to the outside, they are constantly in a state where they are easily stained with dust and the like, and microorganisms propagate.If the dirty state is left unattended, the sebum film etc. will be rancid and irritate the scalp. In order to keep the scalp and hair clean, since various substances enter through the pores and weaken the hair roots and cause hair loss,
Hair is washed by shampoo.

[0003] However, it is often difficult to remove keratotic plugs clogging the pores of the scalp with conventional shampoos alone, and clogging of the plugs causes various dermatitis and the like. Also, clogging of the horn plug hinders the penetration of active ingredients such as a hair restorer into the hair root, which is a cause of the inability to exhibit its effect. Therefore, there is a strong demand from consumers for a product having an effect of easily removing a horn plug clogged in pores and keeping the scalp clean.
JP-A-120532 proposes a composition for removing keratotic plugs in pores of the scalp by blending an ester derivative of dicarboxylic acid.

[0004]

However, in the above-mentioned technology, emphasis is placed on the effect of improving dandruff as compared with conventional shampoos and the like.
The effective effect is less than 50%, and has not been sufficiently satisfied. Therefore, an object of the present invention is to provide foaming,
It is an object of the present invention to provide a cleaning agent which has an excellent action of removing keratotic plugs on the scalp and can keep the scalp clean while satisfying the essential conditions as a cleaning agent such as detergency.

[0005]

Under such circumstances, the present inventors have conducted intensive studies and as a result, have found that a nonionic surfactant having specific physical properties, an ionic surfactant, and a specific fatty acid isopropanol are used. The present inventors have found that the above object can be achieved by combining with an amide, and have completed the present invention.

That is, the present invention provides at least one nonionic surfactant having a liquid appearance at 25 ° C. and an HLB in the range of 6 to 10, an ionic surfactant, and an average carbon number. A fatty acid isopropanolamide having 8 to 20 acyl groups.

[0007]

Embodiments of the present invention will be described below in detail.

The nonionic surfactant used in the present invention has a liquid appearance at 25 ° C., and has an HLB of 6-1.
At least one nonionic surfactant selected from the range of 0. A material having a non-fluid property at 25 ° C., such as a solid or a paste, has a poor effect of dissolving sebum, which is a keratotic component, and does not exhibit a sufficient effect. Further, the HLB is in the range of 6 to 10, and the particularly preferred HLB is in the range of 7 to 9. When the HLB is less than 6, the basic performance as a cleaning agent such as foaming property is inferior. When the HLB is more than 10, the keratotic plug component cannot be removed, and the effect of the invention is not exhibited.

Examples of these nonionic surfactants include polyoxyethylene derivatives of higher alcohols (primary, secondary, linear, branched, saturated, and unsaturated) and polyoxyethylene derivatives of alkylphenols. Ether type and higher fatty acid esters of polyoxyethylene,
Polyoxyethylene glyceryl higher fatty acid ester, polyoxyethylene sorbitan higher fatty acid ester, polyoxyethylene sorbite higher fatty acid ester, polyoxyethylene trimethylolpropane higher fatty acid ester, polyoxyethylene derivative of hydrogenated castor oil, polyoxyethylene hydrogenated castor oil Ester type nonionic surfactants such as higher fatty acid esters and higher fatty acid esters of glycerin and sorbitan are exemplified.

Specifically, polyoxyethylene oleyl ether having 5 to 10 moles of ethylene oxide added, polyoxyethylene nonylphenyl ether having 3 to 8 moles of ethylene oxide added, and 4 moles of ethylene oxide added
A polyoxyethylene octyl phenyl ether of from 7 to 7,
Polyoxyethylene lauryl ether having 3 to 7 ethylene oxide moles, 2 to 2 ethylene oxide moles
6 polyoxyethylene secondary alkyl ether, polyoxyethylene dilaurate having 5 to 13 ethylene oxide addition moles, polyoxyethylene monoisostearate having 5 to 9 ethylene oxide addition moles, polyoxyethylene having 10 to 15 ethylene oxide addition moles Diisostearate, polyoxyethylene monooleate having ethylene oxide addition moles of 5 to 9, polyoxyethylene dioleate having ethylene oxide addition moles of 10 to 15, polyoxyethylene glyceryl monoisostearate having ethylene oxide addition moles of 5 to 10, Polyoxyethylene glyceryl triisostearate having an ethylene oxide addition mole number of 15 to 30, ethylene oxide addition mole number of 1 to 1
6 polyoxyethylene glyceryl monooleate, polyoxyethylene glyceryl triolate having 13 to 30 moles of ethylene oxide added, polyoxyethylene trimethylolpropane trimyristate having 12 to 25 moles of ethylene oxide added, and 2 moles of ethylene oxide added
0 to 30 polyoxyethylene trimethylolpropane triisostearate, ethylene oxide addition mole 1
0-30 polyoxyethylene hydrogenated castor oil, ethylene oxide added mole number 15-30 polyoxyethylene hydrogenated castor oil monoisostearate, ethylene oxide added mole number 2-5 polyoxyethylene monosorbate sorbitan, ethylene oxide added mole number 2-7 polyoxyethylene sorbitan tetraoleate, sorbitan sesquiisostearate, sorbitan monoisostearate, sorbitan monooleate, diglyceryl diisostearate, diglyceryl dioleate, tetraglyceryl monooleate, hexaglyceryl monooleate, diisostearin Polyoxyethylene polyoxypropylene cetyl having 1 to 20 moles of decaglyceryl acid, sorbitan monolaurate, ethylene oxide and propylene oxide Ether and the like, can be selected and used these one or two or more appropriately.

Of these nonionic surfactants, preferred are higher alcohols (primary, secondary linear, branched, saturated,
It may be either unsaturated. ) Polyoxyethylene derivatives, alkylphenol polyoxyethylene derivatives,
Higher fatty acid esters of polyoxyethylene glyceryl and higher fatty acid esters of polyoxyethylene sorbitan are particularly preferred. Polyoxyethylene oleyl ether having 5 to 10 moles of ethylene oxide added and polyoxyethylene nonyl having 3 to 8 moles of ethylene oxide added are particularly preferable. Phenyl ether, polyoxyethylene octyl phenyl ether having 4 to 7 ethylene oxide addition moles, polyoxyethylene lauryl ether having 3 to 7 ethylene oxide addition moles, polyoxyethylene secondary alkyl ether having 2 to 6 ethylene oxide addition moles, ethylene oxide addition It is a polyoxyethylene glyceryl triisostearate having 15 to 30 moles.

The amount of these nonionic surfactants in the composition is 0.5 to 10% by mass (hereinafter simply referred to as%), and more preferably 1.0 to 5%. 0.
If it is less than 5%, a good keratotic plug-removing effect may not be obtained, and if it is more than 10%, stickiness of the scalp or hair may be caused, or foaming as a cleaning agent may be inhibited, so that it is preferable in touch. May not be.

The ionic surfactant in the present invention may be a cationic surfactant, but an anionic surfactant and an amphoteric surfactant are preferred from the viewpoints of detergency and foamability. Specific examples of preferred surfactants include alkyl sulfate type surfactants, alkyl ether sulfate type surfactants, olefin sulfonate type surfactants, phosphate ester type surfactants, and alkyl ether carboxylate type surfactants. Surfactants, amino acid salt type surfactants (sarcosine salt type, β-alanine salt type, glutamate type, aspartate type etc.), sulfosuccinate type surfactants, taurine type surfactants, sulfobetaine type amphoteric Surfactants, alkyl betaine-type amphoteric surfactants, amidopropyl betaine-type amphoteric surfactants, imidazolinium betaine-type amphoteric surfactants and the like can be mentioned.

These ionic surfactants can be used alone or in admixture of two or more. Usually, it is preferably incorporated in the detergent composition in an amount of 5 to 30%, particularly preferably 10 to 30%. ~ 20%.

The acyl group of the fatty acid isopropanolamide of the present invention has an average carbon number of 8 to 20, preferably 1
2 to 18 acyl groups. Examples of the fatty acid isopropanolamide include, for example, undecylenic acid isopropanolamide, lauric acid isopropanolamide, myristic acid isopropanolamide, coconut oil fatty acid isopropanolamide, palm kernel oil fatty acid isopropanolamide, isostearic acid isopropanolamide, and the like. Examples thereof include those having an average carbon number of 12, such as lauric acid isopropanolamide, coconut oil fatty acid isopropanolamide, and palm kernel oil fatty acid isopropanolamide, and acyl group fatty acids such as isostearic acid isopropanolamide.

The mixing amount of these fatty acid isopropanolamides is preferably 0.5 to 5 in the total amount of the detergent composition.
%, More preferably 1.0 to 4.0%. 0.5%
If the amount is smaller, foaming and foam retention may not be sufficient, and may not function as a detergent. On the other hand, when it exceeds 5%, the viscosity of the detergent composition becomes high, a precipitate is generated, and a problem occurs in use. These fatty acid isopropanolamides can be used alone or in combination of two or more.

In the cleaning composition of the present invention, the fatty acid isopropanolamide may be precipitated in a crystalline state in a storage state at a low temperature. Storage stability can be improved. In addition, by blending the polyhydric alcohol, the viscosity is less likely to change depending on the temperature, that is, the viscosity becomes constant when the consumer uses it depending on the season, and it becomes easy to use.

Specific examples of the polyhydric alcohol include propylene glycol, 1,3-butylene glycol, dipropylene glycol, glycerin, hexylene glycol, isoprene glycol, polyethylene glycol and the like. Is preferably 0.5 to 10%, more preferably 1.0 to 5%.

The detergent composition of the present invention further comprises components usually contained in cosmetics such as alcohols, higher alcohols, lanolin derivatives, oils and fats, silicones and polyethylene glycols, as long as the effects of the present invention are not impaired. Oily components such as fatty acid esters, moisturizing components such as collagen, pearlescent agents such as fatty acid ethylene glycol, water-soluble polymer compounds (including nonionic, anionic, cationic and amphoteric), pigments, fragrances, sterilization Agents, anti-inflammatory agents, chelating agents, preservatives, pH adjusters, antioxidants,
An ultraviolet absorber, a plant extract, and the like can be appropriately added.

As is clear from the above, the hair cosmetic composition of the present invention has an effect of removing keratotic plugs in pores on the scalp while satisfying the essential conditions as a detergent such as foamability and detergency. The cleaning composition of the present invention is not particularly limited in form and dosage form as long as it is used for such a purpose. As a specific form, for example, it can be used for various dosage forms such as solid, liquid, aerosol foam, and mist.

[0021]

Next, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples. First, test methods and evaluation methods adopted in each example will be described prior to the examples.

1. Detergency test 5% × 5cm wool muslin cloth on chloroform solution of 7% lanolin and 0.005% Sudan III 0.4
of the contaminated cloth was placed in an approximately 100 mL glass cylinder containing 40 mL of a 3% detergent solution, and shaken in a constant temperature bath at 40 ° C. for 15 minutes.
Rinse the contaminated cloth well in running water, dry, examine the reflectance,
The cleaning rate was determined by the following equation.

Cleaning rate (%) = 100 × (reflectance after cleaning−reflectance before cleaning) / (reflectance of original cloth−reflectance before cleaning)

The evaluation criteria were set as follows. ◎ ・ ・ ・ Excellent cleaning performance Cleaning rate 85% or more ○ ・ ・ ・ Good cleaning performance Cleaning rate 70% to less than 85% △ ・ ・ ・ Normal cleaning performance 55% to less than 70% × ・ ・ ・ Poor cleaning performance Cleaning Rate less than 55%

2. Foaming test 40 in a cylindrical cylinder with a stirrer in a 2500 mL container
400m artificial hard water (70ppm calcium carbonate)
L, and after adding 40 g of the test sample, 1 at 4500 rpm.
After stirring for minutes, the foam volume was measured. The evaluation criteria were set as follows. ：: Excellent foaming (bubble volume 1500 mL or more) ○: Good foaming (bubble volume 1200 mL or more, 1500 m)
L: Less than foaming: Normal (foam volume 800 mL or more, 1200 mL)
×: Poor foaming (foam volume less than 800 mL)

3. The keratotic plug removal effect About the panelists of 10 men and women, the top of the hair of each paneler is divided into the left and right from the middle, the cleaning composition is applied only on the right side before shampooing, and the scalp is massaged for 5 minutes and then shampooed. Used for 5 days. After use for 5 days, the state of the keratin plugging the pores was observed by an expert using a micro video scope (100 times) and compared with the left scalp without using the product of the present invention. Evaluation,
The evaluation was carried out on a 5-point scale according to the following criteria, and the average score was determined. [Evaluation] [Content] 5 points: Very effective 4 points: Somewhat effective 3 points: No effect 2 points: Somewhat worse 1 point: Significantly worse [Judgment] [Average point] ◎: 4.5 points or more ○: 3.5 or more and less than 4.5 points Δ: 2.5 or more and less than 3.5 points ×: less than 2.5 points

4. Degree of improvement in scalp condition The above 10 panelists were evaluated for scalp condition improvement after 5 days of use, compared to the left scalp without using the product of the present invention. The evaluation was carried out in five steps according to the following criteria, and the average score was obtained and judged. [Evaluation] [Content] 5 points: Very good 4 points: Somewhat good 3 points: No effect 2 points: Somewhat bad 1 point: Very bad [Judgment] [Average point] ：: 4.5 points or more ○: 3.5 or more and less than 4.5 points Δ: 2.5 or more and less than 3.5 points ×: less than 2.5 points

Examples 1 to 6 and Comparative Examples 1 to 3 (Shampoos) Shampoos were prepared according to the conventional methods according to the composition shown in Table 1 and their cleaning properties, foaming properties, keratotic plug removal effects and scalp condition were evaluated. The improvement was examined, and the results are shown in Table 1.

[0029]

[Table 1]

As is clear from Table 1, all the shampoos of Examples 1 to 6 using the components of the present invention exhibited excellent performance.

On the other hand, Comparative Example 1 lacking any of the essential components
Nos. 3 to 3 were inferior in any of the detergency, foaming property, keratotic plug removal effect, and scalp condition, and could not achieve the object of the present invention.

Example 7 (hair shampoo) (%) Polyoxyethylene glyceryl triisostearate (20EO) 1.5 Polyoxyethylene (20EO) sodium lauryl sulfate 14.0 Lauric amide Propyl betaine 2.5 • Monoisopropanolamide laurate 1.0 • 1,3-butylene glycol 2.0 • Salicylic acid 0.2 • Disodium edetate 0.2 • Citric acid 0.2 • O- [2-chloride Hydroxy-3- (trimethylammonio) propyl] hydroxyethylcellulose 0.3 L-menthol 0.3 silk extract 0.5 disodium L-ascorbic acid sulfate 0.2 D-pantothenyl alcohol 0. 1 ・ Carrot extract 0.5 ・ Karamugi extract 0.5 ・ Sabo Souekisu 0.5 - calamus root extract 0.5-hydrolyzed collagen solution 0.5 - purple assembly extract 0.5 Dye (No. 203 Yellow) Fine quantity and Perfume Appropriate amount Water Balance

A hair shampoo having the above composition was prepared according to a conventional method, and was evaluated for detergency, foaming property, keratotic plug removal effect, and scalp condition. As a result, Example 7 was excellent in all characteristics.

Example 8 (dandruff shampoo) (%) • Polyoxyethylene glyceryl triisostearate (20EO) 1.5 • Ammonium lauryl sulfate 10.0 • Polyoxyethylene (3) sodium lauryl ether sulfate 0-betaine lauryl dimethylaminoacetate 5.0-coconut oil fatty acid monoisopropanolamide 1.0-dipropylene glycol 2.0-biamine (trade name, manufactured by APC) 1.0-cationized cellulose derivative (trade name: polymer JR-400 (manufactured by UCC)) 0.2 ・ Ethylene glycol dimyristate 2.0 ・ Zinc pyrithione 0.5 ・ Highly polymerized polyethylene glycol (trade name: Polyox WSR-301 [manufactured by UCC]) 0.1 ・Citric acid 0.1 ・ Preservative 0.1 ・ Dye ・Fee proper quantity and water balance

A dandruff shampoo having the above composition was prepared according to a conventional method, and the cleansing property, the foaming property, the keratotic plug removing effect and the improvement of the scalp condition were evaluated. As a result, Example 8 was excellent in all characteristics.

Example 9 (foam shampoo) (stock solution) (%) • polyoxyethylene lauryl ether (3EO) 1.5 • polyoxyethylene (3EO) lauric amide ether sodium sulfate 0-Laurylamidopropyldimethylaminoacetic acid betaine 5.0-Coconut oil fatty acid methyltaurine sodium 5.0-Coconut oil fatty acid monoisopropanolamide 1.0-Coconut oil fatty acid sucrose ester 3.0-Amino-modified silicone aqueous emulsion (Trade name: SM8702C [manufactured by Toray Dow Corning Silicone Co., Ltd.]) 1.0-Biamine (trade name, manufactured by APC) 1.0-Ethanol 2.0-Preservative 0.1-Dye / Fragrance Appropriate amount- Purified water balance (propellant)-Liquefied petroleum gas 7.0-Dimethyl ether 3.0

A foam-like shampoo having the above composition was prepared by a conventional method, and the cleaning property, the foaming property, the keratotic plug removing effect and the improvement of the scalp condition were evaluated. As a result, Example 9 was excellent in all characteristics.

[0038]

EFFECT OF THE INVENTION The cleaning composition of the present invention is excellent in removing keratotic plugs from pores on the scalp and cleans the scalp while satisfying the essential conditions as a cleaning agent such as foamability and detergency. It has the remarkable effect of keeping.

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Claims (1)

[Claims] 1. It has a liquid appearance at 25.degree.
At least one nonionic surfactant in which B is in the range of 6 to 10, an ionic surfactant, and an average carbon number of 8;
A fatty acid isopropanolamide having from 20 to 20 acyl groups.