JPH0641583A - Detergent composition - Google Patents

Abstract

PURPOSE:To provide a detergent composition having high foamabuility and cleaning power against dirts caused by silicone oil, etc., and having very little stimulation to the skin and hair. CONSTITUTION:The detergent composition contains 2-30wt.% one or more multivalent metal salts (A) of anion surfactants and 0.5-5wt.% one or more ethyleneglycol mono or diesters (B) of 16-22C aliphatic carboxylic acids and its pH is 5-8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent composition, and more specifically, it has a high foaming property and a high detergency against dirt such as silicone oil which is difficult to remove from hair and skin by conventional detergents. The present invention relates to a cleansing composition characterized by having extremely low irritation to the skin and hair.

[0002]

2. Description of the Related Art A cleaning agent for hair, face and body is used for the purpose of cleaning stains adhering to hair and skin and keeping it clean. It is no exaggeration to say that the main function of these detergents is the surfactant, and the choice of the surfactant controls the quality of the detergent. The main function that the cleaning agent should have is to prevent excessive degreasing and to have a good cleaning property. Must have a fine, rich lather. Easy to rinse. Must be mild with no irritation to eyes, skin or hair. Etc.

Conventionally, as an activator used in detergents, anionic, amphoteric and nonionic ones have been used depending on the application, but from the viewpoint of detergency and foaming, anionic surfactants are used. The agent was widely used as the main component.
As the anionic surfactant used as the main cleaning agent, there are various types of structures such as alkyl sulfate ester salt, alkyl ether sulfate ester salt, alkyloylalkyl taurine salt, and acyl amino acid salt. Alkyl taurine salts and acyl amino acid salts
It has been widely used in recent years from the viewpoint of mildness to eyes and skin.
Most of these anionic surfactants are used in the form of sodium salts, and some are partially used as triethanolamine salts or ammonium salts in order to improve the solubility. However, anionic surfactants composed of these monovalent counterions are
Although it shows a good cleaning effect on hydrocarbon stains such as sebum, it has been widely used in hair cosmetics such as hair mousses, makeup cosmetics such as foundations, and body cosmetics such as sun oil. It was unsuitable for washing and did not have a good detergency capable of removing it completely. Further, regarding foaming, there is a drawback that it is extremely bad in a situation where dirt such as hydrocarbon oil or silicone oil exists.

As a countermeasure against these problems, it has been tried to increase the concentration of the active agent. However, it may cause thickening of the system, deterioration of usability, and irritation to the skin. There are also examples in which other surfactants such as amphoteric and nonionic are combined, but on the contrary, foaming and detergency may be reduced. That is, the present invention is
Provided is a detergent composition which has a high foaming property and a high detergency with respect to stains such as silicone oil which have been difficult to remove from the conventional detergents from the hair and the skin, and has a significantly low irritation to the skin and hair. This is a technical issue.

[0005]

Means for Solving the Problems As a result of intensive studies to achieve the above technical problems, the present inventors have found that a polyvalent metal salt (A) of a specific anionic surfactant and a carbon number of 16 are used. To 22 ethylene glycol mono- or diester of fatty acid (B) in a specific amount, and the pH of the system
By setting the specific area to, the surface activity such as foaming property and cleaning property is better than monovalent metal salt such as sodium salt, triethanol salt, ammonium salt and polyvalent metal salt of anionic surfactant. And, the skin irritation is extremely low, and it was found that the stain can be easily separated by applying a cleaning agent comprising this combination to the cleaning of hair and skin, and based on this finding, the present invention was completed. I arrived.

The structure of the present invention will be described in detail below. The polyvalent metal salt (A) of the anionic surfactant used in the present invention is an alkyl sulfate ester salt, an alkyl ether sulfate ester salt, an alkylamide sulfate salt, an alkyl sulfonate, an acyl sulfonate, an alkyl sulfosuccinate. , Alkyl phosphates, alkyl amide phosphates, alkyloyl alkyl taurine salts, acyl amino acid salts and alkyl ether carboxylates. Also,
General formula (1):

(Wherein R 1 is an alkyl or alkenyl group having an average carbon number of 7 to 19, R 2 is hydrogen or a carbon number 1)
To 3 alkyl groups, Q is hydrogen or --COOH, Z
Is

[Chemical 2] or

Embedded image where l is 0 to 5, m is 0 to 1, n is 0 to 3 and M is a polyvalent metal ion. ), Those having an amide group in the structural formula are more effective, and examples thereof include an alkylamide sulfate, an alkyloylalkyltaurine salt, and an acylamino acid salt.
In the present invention, any one kind or two or more kinds of these anionic surfactants can be selected and used. The counterion of the polyvalent metal salt (A) of the anionic surfactant used in the present invention is a polyvalent metal, and more preferably magnesium. Further, in the present invention, the compounding amount of the polyvalent metal salt (A) of these anionic surfactants is 2 to 30% by weight. When the content is less than 2% by weight, foaming and detergency are weak and it is not sufficient as a cleaning agent, and when it exceeds 30% by weight, the stability of the system is impaired and the effectors for stimulation such as protein denaturation rate are insufficient. It doesn't get lower.

In the ethylene glycol mono- or diester (B) of a fatty acid having 16 to 22 carbon atoms used in the present invention, the preferred ester is myristate, stearate, oleate or behenate, and more preferably distearate. In the present invention, any one kind or two or more kinds may be selected and used from these. In the present invention, these carbon numbers are 1
The amount of the ethylene glycol mono- or diester (B) of the fatty acid of 6 to 22 is 0.5 to 5% by weight. When the amount is less than 0.5% by weight, factors related to irritation such as protein denaturation rate are not sufficiently lowered, while when it exceeds 5% by weight, the stability of the system is remarkably deteriorated.

The cleaning composition of the present invention has a pH of 5 to 8, and at other pH, desired low irritation may not be obtained, and the color tone and stability of the system may deteriorate remarkably over time. . The pH can be adjusted with an alkali such as caustic soda or triethanolamine, an acid such as hydrochloric acid or citric acid, and various buffer solutions.

In the present invention, in addition to the above-mentioned essential components, components generally used in known detergent compositions can be added within a qualitative and quantitative range that does not impair the effects of the present invention. For example, anionic surfactants other than polyvalent metal salts, higher alcohols, liquid paraffin, oils such as ester oil, moisturizing components such as propylene glycol, glycerin, and polyglycerin, water-soluble polymers such as methyl cellulose and hydroxyethyl cellulose, animals and plants. Natural extracts and their derivatives, organic acids such as citric acid and lactic acid, inorganic salts such as sodium chloride and potassium chloride, preservatives, bactericides, antioxidants, UV absorbers, pigments and fragrances, etc. are added as necessary. it can.

[0010]

EXAMPLES In order to further understand the present invention, examples will be described in detail below, but the present invention is not limited to these examples. All compounding amounts are% by weight. still,
Prior to this, the test method and evaluation method adopted in each example will be described.

(1) Stability test Each of the prepared samples was allowed to stand at 50 ° C. for one month to cause color burning, turbidity,
A stability test was carried out by visually observing for precipitation or separation. The evaluation method was performed in three stages according to the following criteria. A: Good stability: no color burn, turbidity, precipitation or separation is observed. Δ: Slightly poor stability: slight color burn and turbidity are observed. X: Poor stability: significant color burn and turbidity, or precipitation and separation.

(2) Foaming test

[Chemical formula 2] 400ppm of 1ppm sample solution with 70ppm artificial hard water
It was prepared and the amount of foaming was measured using a cylindrical cylinder with a stirrer at a temperature of 40 ° C. The evaluation method was performed in four stages according to the following criteria. ◎ ・ ・ ・ Foaming extremely good: Foam amount of 2,300 ml or more ○ ・ ・ ・ Foaming amount: Foam amount of 2,000 ml or more but less than 2,300 ml △ ・ ・ ・ Foaming Normal: Foam amount of 1,500 ml or more but less than 2,000 ml × ・ ・ ・ Bubbling Poor: less than 1,500 ml of foam

(3) Detergency test (silicone oil removing ability)

[Chemical formula 3] / MgO = 3/1, sample concentration 1 with 5 ° DH artificial hard water
% Solution was prepared and the wool surge cloth contaminated with silicone oil (dimethylpolysiloxane 20cs) was washed. Washing was carried out at a temperature of 40 ° C. using a tergotometer (JIS K-3317), and the washing efficiency was obtained from the ratio of the amount of silicone oil present in the contaminated cloth before and after washing. The amount of silicone oil present in the wool surge was defined as the weight of the silicone oil extracted by the Soxhlet extraction method. Cleaning efficiency (%) = 100 × (Ro-Rw) / Ro Ro: Extraction amount of silicone oil from contaminated cloth before cleaning Rw: Extraction amount of silicone oil from contaminated cloth after cleaning Evaluation method is 3 steps according to the following criteria I went there. Good cleaning power: Cleaning efficiency 70% or more Fair cleaning power: Cleaning efficiency 50% or more to less than 70% Poor cleaning power: Cleaning efficiency less than 50%

(4) Detergency sensory test Sensory evaluation of cream removal ability by cleaning was conducted by 10 panelists. The sunscreen cream prepared according to the formulation shown below was applied to the arm of a subject, and after 2 hours, it was washed with the detergent composition. [Water-resistant sunscreen cream formulation] 2-Ethylhexyl-p-dimethylaminobenzoate 5.0 Vaseline 0.2 Organic silicone resin (Average formula

[Chemical 9] Molecular weight about 3,000) 15.0 Decamethylcyclopentasiloxane 21.0 Dimethylpolysiloxane (Molecular weight about 300,000) 8.0 Polyoxyalkylene-modified organopolysiloxane 3.5 Distearylmethylammonium chloride 1.2 Glycerin 5.0 1, 3-Butylene glycol 5.0 Bee gum 1.8 Fragrance Suitable amount Ion-exchanged water Residual evaluation method was performed in three stages according to the following criteria. ◯: Good cleaning property Δ: Neither can be said ×: Poor cleaning property

(5) Protein denaturation rate By an aqueous high performance liquid chromatographic method, the ovalbumin denaturation rate when the sample was added to an ovalbumin pH7 buffer solution to a sample concentration of 1% was determined using the absorption peak at 220 nm. Measured. Ho: 220 nm absorption peak height of ovalbumin Hs: 220 when a sample is added to ovalbumin buffer solvent
The height of the nm absorption peak was evaluated in four steps according to the following criteria. ◎ ・ ・ ・ Very low irritation to eyes and skin: Degeneration rate 20
Less than% ○ ・ ・ ・ Low irritation to eyes and skin: Degeneration rate 20% or more
Less than 40% △: Moderate irritation to eyes and skin: Degeneration rate of 40% or more
Less than 60% × ... Strongly irritating to eyes and skin: Degeneration rate of 60% or more

(6) Hand Roughness Test For each sample, a hand roughening test was conducted by 5 panelists, 5 males and 5 females. One of the left and right hands of the panel is immersed in an aqueous solution having a sample concentration of 5% and a temperature of 35 ° C., and the other hand is immersed in water of the same temperature for 10 minutes, twice a day.
The test was continuously performed for 2 days, and the difference between the rough skin conditions of the left and right hands was visually evaluated. The evaluation method was performed in four stages according to the following criteria. ◎ ・ ・ ・ Hand roughness is extremely weak (0 to 1 out of 10 people have hand roughening on the sample side) ○ ・ ・ ・ Hand roughness is slightly weak (2 to 4 people out of 10 have hand roughening on the sample side) △: Slightly rough hand (5 to 7 out of 10 people had rough hands on the sample side) × ... Remarkably strong rough hands (8 to 10 people out of 10 had rough hands)

Examples 1 to 4 and Comparative Examples 1 to 6 The detergent compositions of Examples 1 to 4 and Comparative Examples 1 to 6 having the blending compositions shown in Tables 1 to 3 were prepared, and their stability and stability were improved. Evaluations of foamability, detergency, detergency sensory test, protein denaturation rate, and hand roughness test are shown in Tables 1 to 3.

[0018]

[Table 1]

[0019]

[Table 2]

[0020]

[Table 3]

As is clear from Tables 1, 2 and 3, the examples of the present invention were superior to the comparative examples in all of stability, foaming property, detergency, protein denaturation rate and hand roughness test. The performance was shown.

Example 5 Body Washing Agent A body washing agent having the following composition was prepared and Example 1
It evaluated by the method similar to ~ 4. (% By weight) Calcium lauryl-L-glutamate 15.0 Ethylene glycol distearate 2.5 Glycerin 2.0 pH adjuster Appropriate amount Perfume Appropriate amount Ion-exchanged water Residual pH of this body cleaning agent is 6.4 It was excellent in stability, foaming property and detergency, had a low rate of protein denaturation, and had very low irritation to the skin.

Example 6 Hair shampoo A hair shampoo having the following composition was prepared and evaluated in the same manner as in Examples 1 to 4. (Wt%) Polyoxyethylene (EO average 3 mol) Lauryl amide ether sulfate magnesium 10.0 Cocoyl aminoacetate betaine 10.0 Ethylene glycol dipalmitate 3.2 pH adjuster Adequate preservative Adequate purified water Residual The shampoo for hair has a pH of 5.8, foamability,
The detergency was excellent, the protein denaturation rate was small, and the irritation to the skin was extremely weak.

Example 7 Hair Shampoo A hair shampoo having the following composition was prepared and evaluated in the same manner as in Examples 1 to 4. (% By weight) Lauroyl methyl taurine calcium 6.0 Lauroyl methyl taurine magnesium 7.0 Cationized cellulose ether 0.3 Ethylene glycol monostearate 2.8 pH adjuster Appropriate amount Fragrance Appropriate amount Ion-exchanged water Residual shampoo for this hair Has a pH of 6.2, stability,
It was excellent in foamability and detergency, had a low rate of protein denaturation, and had very low irritation to the skin.

Example 8 Face Wash A face wash having the following composition was prepared and evaluated in the same manner as in Examples 1 to 4. (Wt%) cocoyl-magnesium L-glutamate 15.0 2-cocoyl-N-carboxymethyl-10.0 N-hydroxyethyl imidazolium betaine ethylene glycol monobehenate 2.0 diglycerin 3.0 pH adjuster suitable Quantity Fragrance Suitable quantity Ion-exchanged water Residue This face wash had a pH of 6.8, was excellent in foaming properties and detergency, had a low protein denaturation rate, and had extremely low irritation to the skin.

Example 9 Bubble Bath A bubble bath having the following composition was prepared, and Examples 1 to 1 were prepared.
Evaluation was performed in the same manner as in 4. (% By weight) Magnesium lauryl sulfate 25.0 Triethanolamine lauryl sulfate 18.0 Calcium lauroyl sarcosinate 8.0 Ethylene glycol distearate 1.2 Propylene glycol 10.0 pH adjuster Appropriate amount Perfume Appropriate amount Dye Appropriate amount Ion Exchanged water residue This bubble bath had a pH of 7.05, was excellent in stability, foamability, and detergency, had a low protein denaturation rate, and had extremely low irritation to the skin.

[0027]

The detergent composition of the present invention has a high foaming property and a high detergency against dirt such as silicine oil, which is difficult to remove from hair and skin by the conventional detergents, and the skin. A detergent composition having extremely low irritation to hair and hair and excellent stability.

[Chemical 4]

[Chemical 5]

[Chemical 6]

[Chemical 7]

[Chemical 8]

Continuation of front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display area C11D 1:02)

Claims (4)

[Claims] 1. A polyvalent metal salt (A) of an anionic surfactant is contained in an amount of 2 to 30% by weight, and an ethylene glycol mono- or diester of a fatty acid having a carbon number of 16 to 22 is added in an amount of 0.
A cleaning composition comprising 5 to 5% by weight and having a pH of 5 to 8. 2. A polyvalent metal salt (A) of an anionic surfactant is an alkyl sulfate ester salt, an alkyl ether sulfate ester salt, an alkylamide sulfate salt, an alkyl sulfonate, an acyl sulfonate, an alkyl sulfosuccinate. The detergent composition according to claim 1, wherein the detergent composition is selected from the group consisting of a salt, an alkyl phosphate, an alkyl amide phosphate, an alkyloyl alkyl taurine salt, an acyl amino acid salt, and an alkyl ether carboxylate. . 3. A polyvalent metal salt (A) of an anionic surfactant has the general formula (1): (In the formula, R1 is an alkyl group or an alkenyl group having an average of 7 to 19 carbon atoms, R2 is hydrogen or 1 to 3 carbon atoms.
Alkyl group, Q is hydrogen or --COOH, and Z is Or [Chemical 3] , L is 0 to 5, m is 0 to 1, n is 0 to 3,
M is a polyvalent metal ion. And a compound represented by the formula (1).
The cleaning composition described. 4. The cleaning composition according to claim 1, 2 or 3, wherein the polyvalent metal of the polyvalent metal salt (A) of the anionic surfactant is magnesium.