JP6620622B2 - Body cleaning composition - Google Patents

Description

  The present invention relates to a body cleanser composition that can provide good quick foaming properties and foam quality even when using hard water, and can suppress or eliminate the feeling of picking up after washing, and can give a refreshing feeling. .

In the body cleaning composition, not only the detergency for removing dirt, but also foam is regarded as important. For example, fine and dense foam acts as a cushioning material between the skin and hands and towels when rubbing the skin, and has the effect of reducing friction on the skin, and the fine foam makes it easier to scrape dirt from pores. Effects such as increased detergency can be expected. Furthermore, satisfactory foaming is required, for example, satisfaction can be obtained by quickly and abundant foaming. For these reasons, fatty acid salts are widely used as a cleaning component to be blended in a body cleaning composition because good foam quality (especially fine and dense foam) can be obtained quickly.
However, if the water to be used contains a large amount of minerals such as calcium ions and magnesium ions, the fatty acid forms salts with these metal ions, so that there is a problem that foaming ease and foam quality are lowered.

Thus, attempts have been made to solve this problem by combining various compounds with fatty acid salts. In addition, while fatty acid salts have high detergency, one of the problems is that they have high degreasing power. On the other hand, an acylamino acid type anionic surfactant is mentioned as a mild cleaning component with respect to skin.
However, although the acylamino acid type anionic surfactant can reduce the burden on the skin, the ease of foaming and foam quality are not sufficiently satisfactory as compared with fatty acid salts.

  In addition, in the body cleaning composition, in addition to the cleaning power and foam, the condition of the washed-out skin is also important. A characteristic of fatty acid salts is that a feeling of firmness of the skin is felt after use. Furthermore, when the hardness of the water used is high, the feeling of tension is felt even stronger. Such a feeling of tension is not a generally preferred feeling. In addition, when acylamino acid anionic surfactants that can reduce the burden on the skin are the main cleaning ingredients, it becomes difficult to feel a sense of tension, but it feels slippery. is not. That is, in the body cleaning composition, in addition to the cleaning power and foam, it is also important that it is difficult to feel a feeling of being sticky or sticky after washing. It is.

  For example, Patent Document 1 discloses a skin cleansing composition comprising a fatty acid, an acylated amino acid surfactant such as coconut oil fatty acid methyl taurine sodium and lauroyl sarcosine sodium, and a water-insoluble solid powder such as mica and talc. Things are listed. Although this composition suppressed the feeling of being washed up, the quick foaming property and foam quality were insufficient when the hardness of the water used was high.

  Patent Document 2 describes a powdery body washing composition in which a fatty acid salt and an acylglycine salt are blended. This composition has a feeling of tightness after washing and a good foam quality, but when the hardness of water used is high, the foamability is insufficient.

Patent Document 3 shows that a combination of a fatty acid salt, a sugar alcohol, edetic acid, and the like can improve foaming when the hardness of water used is high, and can suppress a feeling of tension. However, this method does not provide a refreshing feeling after washing.
As described above, it has been difficult to develop a body cleansing composition that satisfies all of the refreshing feeling as well as the rapid foaming property, good foam quality, and suppression of the feeling of tension even when using hard water.

JP-A-8-3030 JP 2007-302625 A JP 2007-39350 A

The present invention is a body cleansing composition that can provide good quick foaming properties and foam quality even when using hard water, and can further suppress or eliminate the feeling of picking up after washing and can give a refreshing feeling. For the purpose of provision.
In addition, in the present invention, “good foaming property can be obtained” can be said to be excellent in foaming ease, and “good foaming property can be obtained” means, for example, fine and dense foam (creamy) Is obtained.

  As a result of intensive studies, the present inventors have found that a body cleansing composition containing a specific anionic surfactant and a specific fatty acid salt in a specific ratio can achieve the above object.

（式（１）中、Ｒ^１ＣＯは炭素数８〜２２の脂肪族アシル基を示し、Ｒ^２は単結合または炭素数１〜４の直鎖もしくは分岐鎖のアルキレン基を示し、Ｒ^３は炭素数１〜４の直鎖または分岐鎖のアルキレン基を示し、Ｍ^１はアルカリ金属原子、アルカノールアミンを示す。）

（式（２）中、Ｒ⁴ＣＯは炭素数８〜２２の脂肪族アシル基を示し、ｎは１〜２の整数を示し、Ｍ²はアルカリ金属原子、アルカノールアミンを示す。） That is, the present invention includes (a) component: 0.1 to 20% by mass of the surfactant represented by the formula (1), and (b) component: 10 to 50% by mass of the fatty acid salt having 8 to 22 carbon atoms. (C) component: 0.1-40 mass% of surfactant represented by Formula (2) is contained, and mass ratio ((a) / (b)) of (a) component and (b) component Is a body cleaning composition, wherein the mass ratio of the component (a) to the component (c) ((a) / (c)) is 0.05 to 1 It is.

(In the formula (1), R ¹ CO represents an aliphatic acyl group having 8 to 22 carbon atoms, R ² represents a single bond or a linear or branched alkylene group having 1 to 4 carbon atoms, and R ³ represents represents a linear or branched chain alkylene group having 1 to 4 carbon atoms, M ¹ is shown an alkali metal atom, an alkanolamine.)

(In formula (2), R ⁴ CO represents an aliphatic acyl group having 8 to 22 carbon atoms, n represents an integer of 1 to ² , and M ² represents an alkali metal atom or an alkanolamine.)

According to the body cleaning composition of the present invention, good quick foaming properties and foam quality can be obtained even when using hard water, and the feeling of tension can be suppressed or eliminated after washing, giving a refreshing feeling. Can do.
In the present specification, “hard water” refers to water having an American hardness of 120 ppm or more.

Embodiments of the present invention will be described below.
The body cleaning composition of the present invention contains at least the following components (a), (b) and (c).

[(A) component]
The component (a) used in the present invention is a surfactant represented by the formula (1).
R ¹ CO in the formula (1) represents an aliphatic acyl group having 8 to 22 carbon atoms, preferably 8 to 18 carbon atoms. The aliphatic acyl group includes not only an acyl group derived from a saturated or unsaturated fatty acid having 8 to 22 carbon atoms, but also an acyl group derived from a mixed fatty acid containing two or more of these fatty acids. Examples thereof include coconut oil fatty acid acyl group, palm kernel oil fatty acid acyl group, caproyl group, lauroyl group, myristoyl group, palmitoyl group, stearoyl group, oleoyl group, and behenyl group. Lauroyl group, myristoyl group, coconut oil fatty acid acyl group, and palm kernel oil fatty acid acyl group are preferable. Particularly preferred are a lauroyl group, a coconut oil fatty acid acyl group, and a palm kernel oil fatty acid acyl group.

R ² in the formula (1) represents a single bond or a linear or branched alkylene group having 1 to 4 carbon atoms. Examples of R ² include a methylene group, an ethylene group, an n-propylene group, an isopropylene group, an n-butylene group, and an isobutylene group, and an ethylene group and an n-propylene group are preferable. That is, examples of R ² OH in formula (1) include a monohydroxyethyl group, a monohydroxypropyl group, a monohydroxyisopropyl group, a monohydroxybutyl group, and a 2-hydroxybutyl group. A monohydroxyethyl group and a monohydroxypropyl group are preferred.

R ³ in formula (1) represents a linear or branched alkylene group having 1 to 4 carbon atoms. Examples of R ³ include a methylene group, an ethylene group, an n-propylene group, an isopropylene group, an n-butylene group, and an isobutylene group, and an ethylene group and an n-propylene group are preferable. That is, examples of R ³ COOH in formula (1) include a monocarboxymethylene group, a monocarboxyethylene group, a monocarboxypropylene group, a monocarboxyisopropylene group, a monocarboxybutylene group, and a monocarboxyisobutylene group. A monocarboxyethylene group is preferred.

M ¹ in the formula (1) represents an alkali metal atom or an alkanolamine. Examples of the alkali metal atom include sodium and potassium. Examples of the alkanolamine include monoethanolamine, diethanolamine, and triethanolamine. Of these, sodium, potassium, and triethanolamine are preferable.

  Specific examples of the surfactant represented by the formula (1) include lauroyl hydroxyethylalanine sodium, lauroyl hydroxyethylalanine triethanolamine, lauroyl hydroxypropylalanine triethanolamine, cocoyl hydroxyethylalanine sodium, and the like. .

  In the present invention, the component (a) can be used by appropriately selecting one or more of the compounds encompassed by the above formula (1).

[Component (b)]
The component (b) used in the present invention is a fatty acid salt having 8 to 22 carbon atoms.
10-20 are preferable and, as for carbon number of a fatty acid, 12-18 are especially preferable. Examples of the fatty acid having 8 to 22 carbon atoms include lauric acid, myristic acid, palmitic acid, isopalmitic acid, stearic acid, isostearic acid, and oleic acid. Moreover, the mixed fatty acid which is a mixture of fatty acids can be used, and examples of the mixed fatty acid include coconut oil fatty acid, palm kernel oil fatty acid, and beef tallow fatty acid. Preferred are lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, coconut oil fatty acid and palm kernel oil fatty acid, and particularly preferred are lauric acid, myristic acid, palmitic acid and stearic acid.

Examples of the counter ion forming the salt include alkali metal atoms such as sodium and potassium, and organic amines such as monoethanolamine, diethanolamine, and triethanolamine. Sodium, potassium and triethanolamine are preferable, and potassium is particularly preferable.
In the present invention, the component (b) can be appropriately selected from one or more of the above fatty acid salts.

[Component (c)]
The component (c) used in the present invention is a surfactant represented by the formula (2) and is an acylmethyl monocarboxylate.
R ⁴ CO in the formula (2) represents an aliphatic acyl group having 8 to 22 carbon atoms, preferably 8 to 18 carbon atoms. The aliphatic acyl group includes not only an acyl group derived from a saturated or unsaturated fatty acid having 8 to 22 carbon atoms, but also an acyl group derived from a mixed fatty acid containing two or more of these fatty acids. Examples thereof include coconut oil fatty acid acyl group, palm kernel oil fatty acid acyl group, caproyl group, lauroyl group, myristoyl group, palmitoyl group, stearoyl group, oleoyl group, and behenyl group. Lauroyl group, myristoyl group, coconut oil fatty acid acyl group, and palm kernel oil fatty acid acyl group are preferable. Particularly preferred are a lauroyl group, a coconut oil fatty acid acyl group, and a palm kernel oil fatty acid acyl group.

N in Formula (2) shows the integer of 1-2.
M ² represents an alkali metal atom or an alkanolamine. Examples of the alkali metal atom include sodium and potassium. Examples of the alkanolamine include monoethanolamine, diethanolamine, and triethanolamine. Of these, sodium, potassium, and triethanolamine are preferable.

  Specific examples of the surfactant represented by the formula (2) include, for example, lauroylmethylalanine triethanolamine, sodium lauroylmethylalanine, lauroylmethylglycine triethanolamine, lauroylsarcosine triethanolamine, myristoylmethylalanine triethanolamine. , Sodium myristoyl methylglycine, sodium coconut oil fatty acid methylalanine, coconut oil fatty acid sodium sarcosine, coconut oil fatty acid methylglycine triethanolamine and the like.

  In the present invention, the component (c) can be used by appropriately selecting one or more of the compounds encompassed by the above formula (2).

Next, the content of each component in the body cleaning composition of the present invention will be described.
(A) Content of a component is 0.1-20 mass% with respect to a body cleaning composition, Preferably it is 0.5-15 mass%, Most preferably, it is 1-10 mass%. . When the content of the component (a) is too small or too large, the foaminess at the time of washing may deteriorate.

  (B) Content of a component is 10-50 mass% with respect to a body cleaning composition, Preferably it is 20-40 mass%, Most preferably, it is 25-35 mass%. When the content of the component (b) is too small, foaming ease and creaminess of the foam may be lowered. When the content of the component (b) is too large, the surfactant is precipitated at low temperature and the stability is lowered. May cause problems.

  (C) Content of a component is 0.1-40 mass% with respect to a body cleaning composition, Preferably it is 0.5-30 mass%, Most preferably, it is 1-20 mass%. . When the content of the component (c) is too small, the quick foaming property at the time of washing may not be sufficient, and when the content of the component (c) is too large, the surfactant is precipitated and stable at a low temperature. Problems such as decreased performance may occur.

  In the body cleaning composition of the present invention, the mass ratio ((a) / (b)) of the component (a) to the component (b) is 0.01 to 0.8, preferably 0.1 to 0.00. 4. When the mass ratio ((a) / (b)) is too large, suppression of the feeling of tension may be insufficient. When the mass ratio ((a) / (b)) is too small, the refreshing feeling may be insufficient.

  Moreover, mass ratio ((a) / (c)) of the component (a) and the component (c) is 0.05 to 1, preferably 0.15 to 0.6. When the mass ratio ((a) / (c)) is too large, the quick foam property and the stiffness of the foam may not be sufficient. If the mass ratio ((a) / (c)) is too small, the stiffness of the foam may not be sufficient.

The body cleansing composition of the present invention can be produced according to a usual method. The body cleansing composition of the present invention may further contain a solvent. Examples of the solvent include water, lower alcohols such as ethanol, and lower alcohol aqueous solutions, and water is particularly preferable.
In the body cleaning composition of the present invention, the total content of the components (a) to (c) and a solvent such as water is 100% by mass or less.

As long as the body cleaning composition of the present invention is intended for body cleaning, the use form such as liquid or gel is not limited. For example, the body cleaning composition can be used as a body shampoo, facial cleanser, and hand soap. .
Further, the body cleansing composition of the present invention, if necessary, within the range not impairing the effects of the present invention, other surfactants and moisturizers, oils, water-soluble polymers, preservatives, bactericides, You may contain the various components generally used for hair and body washing | cleaning agents, such as a pH adjuster.

Examples of other surfactants include cationic surfactants, anionic surfactants (excluding the components (a) and (c)), amphoteric surfactants, and nonionic surfactants. Among them, it is preferable to contain an amphoteric surfactant or a nonionic surfactant.
Examples of amphoteric surfactants include sodium cocoamphoacetate, lauramidopropyl betaine, cocamidopropyl betaine, sodium lauraminodiacetate, etc., and nonionic surfactants include, for example, sorbitan laurate, sorbitan palmitate, Sorbitan fatty acid esters such as sorbitan oleate, sorbitan stearate, sorbitan polyoxyethylene laurate, sorbitan polyoxyethylene palmitate, sorbitan polyoxyethylene oleate, sorbitan polyoxyethylene stearate; glycerin fatty acid esters such as glyceryl stearate Polyglycerin laurate; polyglycerin lauryl ether; sucrose fat such as sucrose laurate and sucrose stearate Acid esters; polyoxyalkylene alkyl ethers such as laureth-4; polyoxyalkylene esters such as PEG-4 lauryl acid and PEG-7 glyceryl cocoate; and alkylolamides such as coconut oil fatty acid diethanolamide It is done. In particular, among the nonionic surfactants, glyceryl stearate can stabilize the formulation system of a body cleanser composition such as a facial cleanser, and therefore it may be preferable to blend for this purpose.
Content of other surfactant is 0.1-20 mass% with respect to a body cleaning composition, Preferably it is 0.5-15 mass%, Most preferably, it is 1-10 mass%. is there.

Examples of the humectant include glycerin, propylene glycol, 1,3-butylene glycol, diglycerin, sorbitol and the like.
Examples of the oil component include hydrocarbon oils such as liquid paraffin, solid paraffin, and petrolatum; ester oils such as isopropyl myristate, octyldodecyl myristate, isopropyl palmitate, and diisopropyl sebacate; straight silicone oil such as dimethylpolysiloxane and poly Examples thereof include silicone oils such as modified silicone oils into which ether groups, amino groups, fatty acid amide groups and the like have been introduced.
Examples of the water-soluble polymer include nonionic polymers such as starch, methylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, guar gum, and xanthan gum; anionic polymers such as carboxymethyl starch, carboxymethylcellulose, alginic acid, and gum arabic; Cationic starch; dimethyldiallylammonium chloride / acrylamide copolymer (polyquaternium-7), cationized cellulose (polyquaternium-10), dimethyldiallylammonium chloride / acrylic acid copolymer (polyquaternium-22), acrylamide / acrylic acid / chlorinated And cationic polymers such as dimethyldiallylammonium copolymer (polyquaternium-39).

Examples of the preservative and fungicide include benzoic acid or a salt thereof, parabens such as paraoxybenzoic acid, methyl paraoxybenzoate, and propyl paraoxybenzoate, and phenoxyethanol.
Examples of the pH adjuster include organic acids such as citric acid and sodium citrate and salts thereof, potassium hydroxide, sodium hydroxide, triethanolamine and the like.

[Examples 1 to 12 and Comparative Examples 1 to 8]
Hereinafter, the present invention will be specifically described with reference to Examples and Comparative Examples.
Based on the blending ratio (% by mass) described in Table 1 and Table 2, body cleansing compositions were prepared according to conventional methods.
The body cleansing compositions obtained in Examples and Comparative Examples were used as samples and evaluated as follows, and the results are summarized in Tables 1 and 2.

(1) Quick foaming (ease of foaming when washed with hard water)
Twenty men and women (24 to 47 years old) were panelists, and the speed of foaming was evaluated when a sample of 5 g was foamed by hand using water at a hardness of 150 and 40 ° C. The total score of 20 people was determined by 2 points when feeling foaming was fast, 1 point when feeling foaming was slightly fast, and 0 point when feeling foaming was slow, and evaluated as follows.
A: Total score of 35 or more; foaming is very fast.
A: The total score is 30 or more and less than 35; foaming is fast.
Δ: Total score of 20 points or more and less than 30 points; foaming is slow.
X: The total score is less than 20; foaming is very slow.

(2) Foam density 200 g body wash composition aqueous solution (diluted with water of 1% by mass and hardness 150) at 40 ° C. is put in a bowl, and is rotated at 800 rpm with a hand mixer (manufactured by Kaiin Co., Ltd., DK5031). Whisked for 1 minute. Transfer the contents of the bowl to a 500 mL graduated cylinder, and place a float (fluorescent synthetic ball No. 15, weight 10 g) with a weight (5 g) on the foam until the center line of the float sinks by a scale equivalent to 100 mL. The bubble density was evaluated according to the following criteria.
A: Passing time 15 seconds or more; foam density is very high.
○: Passing time 10 seconds or more and less than 15 seconds; foam density is high.
Δ: Passing time 5 seconds or more and less than 10 seconds; foam density is low.
X: Passing time: 0 second or more and less than 4 seconds; the bubble density is very low.

(3) Refreshing feeling 20 males and females (24-47 years old) are panelists, put 5 g of sample on their hands, wash their hands with water at 40 ° C. with a hardness of 150, and wipe off the moisture with a towel. Based on the number of panelists evaluated as having a refreshing feeling, the following criteria were used.
A: 18 to 20 people; feels refreshingly strong.
○: 11 to 17 people; feel a little refreshed.
Δ: 7 to 10 people; it is difficult to feel a refreshing feeling.
X: 0 to 6 people; no refreshing feeling.

(4) Suppression of tension After 20 males and females (24-47 years old) are panelists, 5 g of sample is put on their hands, their hands are washed with water at 40 ° C. with a hardness of 150, and water is wiped off with a towel. Based on the number of panelists evaluated as having no skin tightness, the following criteria were used.
A: 18 to 20 people; little or no feeling of tension.
○: 11 to 17 people;
Δ: 7 to 10 people;
X: 0 to 6 people;

Examples 1-12 were favorable evaluation in any item.
On the other hand, Comparative Example 1 did not contain the component (a), so that the refreshing feeling was good, but the quick foaming property, the foam density, and the suppression of the feeling of sticking were insufficient.
Since Comparative Example 2 does not contain the component (c), the feeling of tension can be suppressed, but the quick foam property, the foam density, and the feeling of refreshing are insufficient.
Since Comparative Example 3 did not contain the component (b), the refreshing feeling and the suppression of the feeling of refreshing were good, but the fast foaming property and foam density were insufficient.
In Comparative Example 4, the component (a) was not included, and an acylmethyl taurine salt was included instead, and the refreshing feeling was good. However, all of quick foaming property, foam density, and suppression of the feeling of tension were insufficient.
Comparative Example 5 does not contain the component (a), contains the component (b), the component (c), and other silica, and any of fast foaming property, bubble density, refreshing feeling, and restraining the feeling of sticking. Was insufficient.

Comparative Example 6 contains lauryldimethylacetate betaine and sucrose fatty acid ester as component (a) and other components, and although it can suppress the feeling of tension, it is insufficient in quick-foaming property, bubble density and feeling of refreshing. It was.
In Comparative Example 7, the mass ratio of the component (a) to the component (c) ((a) / (c)) exceeds the upper limit specified in the present invention. The foam density and the refreshing feeling were insufficient.
In Comparative Example 8, since the mass ratio of the component (a) to the component (b) ((a) / (b)) exceeds the upper limit specified in the present invention, the refreshing feeling and the restraining of the feeling of feeling are good. The rapid foaming property and foam density were insufficient.

  Furthermore, the formulation example of the body cleaning composition of this invention is shown concretely below.

  The body cleanser compositions of these prescription examples provide good quick foaming properties and foam quality even when using hard water, and are excellent in suppressing or eliminating the feeling of skin tightness after washing and imparting a refreshing feeling. Met.

The body cleaning composition of the present invention is suitable for use in body washing, particularly in body washing using hard water, and can obtain good quick foaming properties and foam quality even when using hard water. A feeling of tension can be suppressed or eliminated, and a feeling of refreshing can be imparted.

Claims (1)

(A) component: 0.1-20 mass% of surfactant represented by Formula (1),
(B) Component: 10 to 50% by mass of a fatty acid salt having 8 to 22 carbon atoms,
(C) component: 0.1-40 mass% of surfactant represented by Formula (2) is contained,
The mass ratio ((a) / (b)) between the component (a) and the component (b) is 0.01 to 0.8,
A body cleaning composition, wherein the mass ratio of component (a) to component (c) ((a) / (c)) is 0.05 to 1.

(In the formula (1), R ¹ CO represents an aliphatic acyl group having 8 to 22 carbon atoms, R ² represents a single bond or a linear or branched alkylene group having 1 to 4 carbon atoms, and R ³ represents represents a linear or branched chain alkylene group having 1 to 4 carbon atoms, M ¹ is shown an alkali metal atom, an alkanolamine.)

(In formula (2), R ⁴ CO represents an aliphatic acyl group having 8 to 22 carbon atoms, n represents an integer of 1 to ² , and M ² represents an alkali metal atom or an alkanolamine.)