JP3114370B2 - Detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent composition which has low irritation, foaming properties, stability over time, and excellent usability.

[0002]

2. Description of the Related Art In recent years, there has been a demand for a detergent composition which is less irritating, such as "friendly to skin and hair", due to an increase in consumers' awareness of safety such as rough skin and damage to hair. Attempts have been made to use hypoallergenic surfactants as such detergent compositions, and such surfactants include amide ether sulfate anionic surfactants. Examples of the detergent composition using an amide ether sulfate type anionic surfactant include a detergent composition in which an acyl glutamate type anionic surfactant is combined (JP-A-2-235999), an acyl-β- Detergent composition combining an alaninate-type anionic surfactant (JP-A-2-222493), and detergent composition combining a sulfosuccinate-type anionic surfactant (JP-A-2-23229)
No. 8), a detergent composition comprising a combination of an alkyl succinate type anionic surfactant (JP-A-62-1293).
No. 90), a detergent composition combining an alkyl ether carboxylate type anionic surfactant (Japanese Unexamined Patent Publication No.
-95100).

[0003]

A conventional detergent composition using an amide ether sulfate type anionic surfactant uses an alkali metal salt such as a sodium salt or an organic ammonium salt such as a triethanol ammonium salt. . Although the detergent composition using the sodium salt of the amide ether sulfate type anionic surfactant has low irritation, it is not preferable to contact the protein at a high concentration, and the detergent composition having a lower irritation. Things were sought. Further, a detergent composition using a triethanolammonium salt of an amide ether sulfate type anionic surfactant is preferable because it has a very low irritation, but has a drawback that it is easily colored with time. Further, the detergent composition using the amide ether sulfate type anionic surfactant has a drawback that the foam is not elastic and the foam is not persistent.

[0004] The present invention has solved the above-mentioned problems and has a low irritation property.
An object of the present invention is to provide a detergent composition having excellent foaming properties, stability over time, and feeling during use.

[0005]

The present invention provides the following a),
A cleaning composition comprising b), wherein a) + b) is 5 to 40% by weight, and the weight ratio of a) and b) is 10/1 to 1/10. a) Amide ether sulfate type anionic surfactant represented by the formula (1) b) Acylalkyl taurate type anionic surfactant represented by the formula (2) or acyl isethiode represented by the formula (3) Nate type anionic surfactant

[0006]

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[0007]

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[0008]

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The amide ether sulfate type anionic surfactant represented by the formula (1) of a) has an aliphatic acyl group in which R ¹ CO has 10 to 22 carbon atoms, for example, a lauroyl group, a myristoyl group, Palmitoyl group, stearoyl group, oleoyl group, cocoyl group and the like can be mentioned. When the number of carbon atoms is 9 or less, irritation to hair and skin is increased, and when the number of carbon atoms is 23 or more, foaming property is reduced. R ² is hydrogen or an alkyl group having 1 to 3 carbon atoms, and examples thereof include a methyl group, an ethyl group, and a propyl group. n is 2 to 15, n
If it is less than 2, irritation to hair and skin becomes strong, and if it exceeds 15, the foaming property decreases. M ¹ is 1/2 calcium, 1
/ 2 magnesium.

The acylalkyltaurate type anionic surfactants represented by the formula (2) in b) are those wherein R ³ CO is an aliphatic acyl group having 10 to 22 carbon atoms, such as a lauroyl group or a myristoyl group. And a palmitoyl group, a stearoyl group, an oleoyl group, a cocoyl group and the like. When the number of carbon atoms is 9 or less, irritation to hair and skin is increased, and when the number of carbon atoms is 23 or more, foaming property is reduced. R ⁴ has 1 to 3 carbon atoms
And a methyl group, an ethyl group, and a propyl group. Examples of M ² include lithium, sodium, potassium, カ ル シ ウ ム calcium, マ グ ネ シ ウ ム magnesium, ammonium, triethanol ammonium, diethanol ammonium, monoethanol ammonium and the like.

The acyl isethionate type anionic surfactant represented by the formula (3) of b) has a structure in which R ⁵ CO has 1 carbon atom.
0 to 22 aliphatic acyl groups, for example, lauroyl group, myristoyl group, palmitoyl group, stearoyl group, oleoyl group, cocoyl group and the like. When the number of carbon atoms is 9 or less, strong irritation to hair and skin is strong. Has 2 carbon atoms
If it is 3 or more, the foaming property is reduced. Lithium as the M ^3,
Sodium, potassium, 1/2 calcium, 1/2 magnesium, ammonium, triethanol ammonium, diethanol ammonium, monoethanol ammonium, and the like.

A) + b) is 5 to 40% by weight,
If the amount is less than 40% by weight, the foaming property is inferior. The weight ratio of a) and b) is 10/1 to 1/10, but 1
If it exceeds 0/1, the durability of the foam decreases, and if it is less than 1/10, the stability over time decreases.

[0013] The cleaning composition of the present invention may further contain components generally incorporated therein, for example, amphoteric surfactants such as aminoacetic acid betaine-type amphoteric surfactants, amidobetaine-type amphoteric surfactants, and imidazoline-type amphoteric surfactants. Non-ionic surfactants such as alkyl polyoxyethylene ether type non-ionic surfactants, higher fatty acid polyoxyethylene ester type non-ionic surfactants, higher fatty acid polyhydric alcohol ester type non-ionic surfactants Foaming agents such as fatty acids and higher alcohols, humectants such as glycerin and ethylene glycol, oils such as squalane, jojoba oil, olive oil, castor oil, lanolin, lecithin, cationic modified cellulose ether derivatives, and polyvinylpyrrolidone derivatives. Ammonium salt, polyacrylic acid derivative quaternary ammonium salt Polyamide derivative quaternary ammonium salt, diallyldimethylammonium chloride polymer, copolymer of diallyldimethylammonium chloride and acrylamide, cationic polymer compound such as alkylpolyethyleneimine, and other natural extracts of animals and plants, flavors, coloring agents, preservatives And the like can be appropriately added as long as the effects of the present invention are not impaired.

[0014]

EXAMPLES The present invention will be specifically described with reference to examples. Examples 1 to 8 and Comparative Examples 1 to 12 The formulations shown in Tables 1 to 3 were prepared, and the performance as a body shampoo was evaluated by the following method. The results are shown in Tables 1 to 3.
Shown in

(1) Skin irritation Evaluation was made based on the protein denaturation rate. That is, using an aqueous high-performance liquid chromatography, using a pH7 buffer solution having a concentration of 0.025% by weight of ovalbumin and measuring the height of the absorption peak at 220 nm when the sample was added to a sample concentration of 1%, The protein denaturation rate was determined from the following equation. Protein denaturation rate = [(H0−HS) / H0] × 100 H0: height of absorption peak when no sample was added HS: height of absorption peak when sample was added In the following four steps according to protein denaturation rate evaluated. Very low skin irritation (Protein denaturation rate of less than 30%) Low skin irritation (Protein denaturation rate of 30% to less than 60%) Moderate skin irritation (Protein denaturation rate of 60% to less than 80%) Skin irritation Strong (80% or more protein denaturation rate)

(2) Foaming property An aqueous solution having a sample concentration of 1% was prepared and subjected to the Rossmiles method.
At 25 ° C., the foam height was measured immediately after charging the sample and 5 minutes later. A foam having a foam height of 150 mm or more immediately after the introduction of the sample and a foam sustainability of 90% or more determined by the following formula was evaluated as a good foaming detergent. Persistence of foam = [(foam height after 5 minutes) / (foam height immediately after sample introduction)] x 100

(3) Feeling of slickness after rinsing The fingers and forearms were washed using 20 women as panelists and 5 ml of the composition taken on a bath sponge.
The slimy feeling after rinsing three times while flowing with 1 liter of hot water at ℃ was evaluated. 4 if you do not feel slimy
The average value of 20 people was calculated, with 3 points if you felt that there was almost no slimming feeling, 2 points if you felt that the slimming feeling was slight, and 1 point if you felt that the slimming feeling was persistent,
Those having an average value of 3.0 or more were evaluated as detergents having no slimy feeling.

(4) Refreshing feeling after rinsing Washing fingers and forearms using 20 women as panelists and 5 ml of the composition taken on a bath sponge
The freshness after rinsing three times while flowing with 1 liter of hot water at ℃ was evaluated. 4 points if you feel refreshed, 3 points if you feel slightly refreshed, 2 points if you feel little refreshed, 1 point if you feel completely refreshed The average value of 20 persons was determined, and those having an average value of 3.0 or more were evaluated as cleanser having a refreshing feeling after washing.

(5) Stability over time The sample was stored at -5 ° C., 25 ° C., and 45 ° C. for one month, and its appearance was observed. ：: Good stability (transparent or slightly turbid, no change in appearance) △: Slightly poor stability (slightly turbid or colored) ×: Poor stability (precipitated, solidified or markedly colored)

[0020]

[Table 1]

[0021]

[Table 2]

[0022]

[Table 3]

From Tables 1 to 3, it can be seen that the cleaning compositions of Examples 1 to 8 of the present invention have low irritation, a sufficient refreshing feeling after use, and are excellent in foaming properties and stability over time. it is obvious. Comparative Example 1 containing only the component a) has a low foam retention rate.
a) Comparative Example 2 M ¹ is sodium component only equation (1) is highly irritating, sustained rate of foam is also low. Comparative Example 3, in which only component a) is used and M ¹ in formula (1) is triethanolammonium, has poor stability over time and a low foam retention rate. Comparative Example 4 in which M ^{1 in the} formula (1) is sodium has strong irritation. Comparative Example 5 in which M ^{1 in the} formula (1) is triethanolammonium has poor temporal stability. a) + b)
However, Comparative Example 6 containing less than 5% by weight has a low foaming property and does not provide a refreshing feeling after rinsing. Comparative Example 7 in which a) + b) exceeds 40% by weight has strong irritation, and the slimy feeling after rinsing is somewhat persistent. Comparative Example 8 in which the weight ratio of a) and b) exceeds 10/1 has a low foam retention rate. The weight ratio of a) and b) is 1 /
Comparative Example 9 of less than 10 has a persistent slimy feeling after rinsing,
Poor stability over time. Comparative Example 10 in which lauryl sulfate sodium salt was used in place of a) and Comparative Example 11 in which polyoxyethylene (3 mol) lauryl ether sulfate sodium salt was used in place of a) were highly irritating and poor in usability. Poor stability over time. Comparative Example 12 using polyoxyethylene (3 mol) lauryl ether sulfate magnesium salt instead of a) is highly irritating.

Example 9 A facial cleansing foam composition was prepared according to the formulation shown in Table 4 and evaluated. Table 4 shows the results. When this facial cleansing foam composition was evaluated, it was low in irritation, no slimy feeling at the time of use, and a refreshing feeling was obtained after use, there was no skin tightness, foaming properties, and stability over time were excellent. .

[0025]

[Table 4]

The method for evaluating the facial cleansing foam composition was the same as that of Examples 1 to 8 in terms of skin irritation, foaming properties, and stability over time, and the following methods were used for other items. (1) Sliminess at the time of rinsing Twenty women were panelists, the face was washed with 5 ml of the composition, and the slimming at the time of rinsing was evaluated. 4 points if you feel no slimy feeling, 3 points if you feel almost slimy
The average score of 20 or more was evaluated as a composition without a slimy feeling, with 2 points if you felt that the slimy feeling was slight and 1 point if you felt that the slimy feeling was persistent. did.

(2) Refreshing Feeling After Washing the Face Twenty women were panelists, washed with 5 ml of the composition, and the refreshing feeling after rinsing was evaluated. 4 points if you feel refreshed, 3 points if you feel slightly refreshed
20 points, 2 points if you feel that there is almost no refreshing feeling, and 1 point if you feel that there is no refreshing feeling.
The average value of the names was determined, and an average value of 3.0 or more was evaluated as a composition having a refreshing feeling after washing the face.

(3) Feeling of Skin Tightening after Facial Washing Twenty women were panelists, washed with 5 ml of the composition, and evaluated for skin firming after rinsing. 4 points if you feel that there is no feeling of tightness, 3 points if you feel that there is almost no feeling of tightness, 2 points if you feel that there is a slight feeling of tightness, 1 point if you feel a feeling of tightness ,
The average value of 20 persons was determined, and an average value of 3.0 or more was evaluated as a composition having no skin tightness after washing the face.

Example 10 A hair shampoo composition was prepared according to the formulation shown in Table 5 and evaluated. Table 5 shows the results. When this hair shampoo composition was evaluated, it was found to have low irritation, good finger passage during use, good combability after use, and excellent conditioning effects, foaming properties, and stability over time.

[0030]

[Table 5]

The methods for evaluating the hair shampoo compositions were as follows: skin irritation, foaming, and stability over time.
The method was the same as that described above, and the other items were determined by the following method. (1) Finger passing at the time of hair washing 20 women were panelists, and finger passing at the time of washing with 5 ml of the composition was evaluated. An average of 20 people, with 2 points for feeling that the finger passage was smooth and the hair did not get caught, 1 point for feeling that the hair caught a little finger, and 0 point for feeling that the finger passage was very bad, an average of 20 people Values were determined, and an average value of 1.5 or more was evaluated as a composition that was good for finger washing during hair washing.

(2) Combing after Hair Washing Twenty women were panelists, and their combability after washing and drying with 5 ml of the composition was evaluated. Two points when the hair felt smooth and there was no squeaky feeling in the hair, one point when the hair felt that the hair got stuck on the comb, and a point when the hair felt very poor, The average value of 20 persons was determined, and an average of 1.5 or more was evaluated as a composition having good combability after washing the hair.

(3) Conditioning Effect after Hair Washing Twenty women were panelists, and the conditioning effect after washing and drying with 5 ml of the composition was evaluated. 2 points when you feel that the conditioning effect is excellent, 1 point when you feel that the conditioning effect is slightly obtained,
0 if you feel that the conditioning effect cannot be obtained
As points, an average value of 20 persons was obtained, and an average value of 1.5 or more was evaluated as a composition having a good conditioning effect after shampooing.

Example 11 A body shampoo composition was prepared according to the formulation shown in Table 6 and evaluated by the following method. Table 6 shows the results. When this body shampoo composition was evaluated, it had low irritation, no slimy feeling at the time of use, a sufficient refreshing feeling was obtained after use, no skin firmness, no foaming,
Excellent in stability over time.

[0035]

[Table 6]

The body shampoo composition was evaluated by the methods described in Examples 1 to 8 for skin irritation, foaming property, and stability over time.
The method was the same as that described above, and the other items were determined by the following method. (1) Sliminess at the time of rinsing Twenty women were panelists, and 5 ml of the composition was lathered on a sponge for bathing, the body was washed, and the sliminess at the time of rinsing was evaluated. Score 4 points if you feel no sliminess, 3 points if you feel little sliminess, 2 points if you feel a little sliminess, and 1 point if you feel slimy , Find the average of 20 people and find the average
3.0 or more was evaluated as a composition having no slimy feeling.

(2) Refreshing feeling after rinsing Twenty women were panelists, and 5 ml of the composition was lathered on a bath sponge, the body was washed, and the refreshing feeling after rinsing was evaluated. 4 if you feel refreshed
The average value of 20 people was calculated, with 3 points when they felt slightly refreshed, 2 points when they felt little refreshing, and 1 point when they felt no refreshing at all. The composition having an average value of 3.0 or more was evaluated as a composition having a refreshing feeling after washing.

(3) Feeling of Skin Tightness after Rinse Twenty women were panelists, 5 ml of the composition was foamed on a sponge for bathing, the body was washed, and the skin feeling after rinsing was evaluated. 4 points if you feel that there is no feeling of tightness, 3 points if you feel that there is almost no feeling of tightness, 2 points if you feel that there is a slight feeling of tightness, 1 point if you feel a feeling of tightness The average value of 20 persons was determined, and an average value of 3.0 or more was evaluated as a composition without a sense of tightness.

Example 12 A hand soap composition was prepared according to the formulation shown in Table 7 and evaluated. Table 7 shows the results. When this hand soap composition was evaluated, it had low irritation, no slimy feeling at the time of use, sufficient refreshing feeling after use, no skin tightness, excellent foaming properties, and excellent stability over time. Was.

[0040]

[Table 7]

The evaluation method of the hand soap composition was the same as that of Examples 1 to 8 with respect to skin irritation, foaming property, slimy feeling during rinsing, refreshing feeling after rinsing, and stability over time. The following method was used for the item (1). (1) Feeling of skin tightness after rinsing Twenty women were panelists, and their fingers and forearms were washed with 5 ml of the composition, and the feeling of skin tightness after rinsing was evaluated. 4 points if you feel that there is no feeling of tightness, 3 points if you feel that there is almost no feeling of tightness, 2 points if you feel that there is a slight feeling of tightness, 1 point if you feel a feeling of tightness , Find the average of 20 people and find the average
A composition of 3.0 or more was evaluated as a composition having no feeling of tension.

Example 13 A cleansing foam composition was prepared according to the formulation shown in Table 8 and evaluated. Table 8 shows the results. When this cleansing foam composition was evaluated, the irritation was low,
There was no slimy feeling during use, a sufficient moist feeling was obtained after use, no skin tightness, excellent foaming properties, and excellent stability over time.

[0043]

[Table 8]

The method of evaluating the cleansing foam composition was as described in the above Examples for skin irritation, foaming property and stability over time.
It is the same as the method of 1-8, and the following methods were used for other items. (1) Sliminess at the time of rinsing Twenty women were panelists. After having their faces wet with a foundation, each was washed with 5 g of the composition, and the slimming at the time of rinsing was evaluated. Score 4 points if you feel no sliminess, 3 points if you feel little sliminess, 2 points if you feel a little sliminess, and 1 point if you feel slimy The average value of 20 persons was determined, and an average value of 3.0 or more was evaluated as a composition having no slimy feeling.

(2) Moist feeling after rinsing Twenty women were panelists. After having their faces wet with a foundation, they were washed with 5 g of the composition, and the moist feeling after rinsing was evaluated. 4 points if you feel moist, 3 points if you feel a little moist,
If you feel that there is almost no moist feeling, 2 points, if you feel that there is no moist feeling as 1 point, determine the average value of 20 people, and after washing the average value of 3.0 or more with a moist composition after washing evaluated.

(3) Feeling of Skin Tightness after Rinse Twenty women were panelists, each having their face wet with a foundation, washed with 5 g of the composition, and evaluated for a feeling of skin tightening after rinsing. . 4 points if you feel that there is no feeling of tightness, 3 points if you feel that there is almost no feeling of tightness, 2 points if you feel that there is a slight feeling of tightness, 1 point if you feel a feeling of tightness The average value of 20 persons was determined, and an average value of 3.0 or more was evaluated as a composition without a sense of tightness.

Example 14 A dishwashing detergent composition was prepared according to the formulation shown in Table 9 and evaluated. Table 9 shows the results. When this dishwashing detergent composition was evaluated, it was low in irritation, had excellent detergency, and was excellent in foaming properties and stability over time.

[0048]

[Table 9]

The evaluation method of the dishwashing detergent composition was the same as that of Examples 1 to 8 in terms of skin irritation, foaming property, and stability with time, and the following methods were used for other items. . (1) Detergency A detergency test was carried out using a Rinatsu tester in accordance with the detergency evaluation method of JIS K 3370, and evaluated by the following criteria by comparison with test results obtained using an index detergent solution for judging detergency. …: Good washability (clearly superior) △: Normal washability (almost no difference) ×: Poor washability (clearly poor)

[0050]

EFFECTS OF THE INVENTION The cleaning composition of the present invention has low irritation, excellent foaming properties, stability over time, and excellent usability, so that it is a hair shampoo composition, a body shampoo composition, and a dishwashing detergent composition. Etc. can be used.

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁷ identification code FI C11D 1:28 1:14) (58) Investigated field (Int.Cl. ⁷ , DB name) C11D 1/37 A61K 7/075 A61K 7/50 CA (STN) CAOLD (STN) REGISTRY (STN)

Claims (1)

(57) [Claims] 1. The composition contains the following a) and b), a) + b) is 5 to 40% by weight, and the weight ratio of a) and b) is 10/1 to 1/1.
10. A cleaning composition, which is 10. a) Amide ether sulfate type anionic surfactant represented by the formula (1) b) Acylalkyl taurate type anionic surfactant represented by the formula (2) or acyl isethiode represented by the formula (3) Nate type anionic surfactant Embedded image Embedded image