JP2014172881A - Body detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a body detergent composition giving fresh feeling and moist feeling to the skin while giving no stretch feeling nor sliminess feeling after washing, and having excellent foamability even under coexistence of an oily component.SOLUTION: A body detergent composition contains (a) 0.1 to 10 mass% of a salt of acylmethyl-β-alanine and a taurine salt, (b) 2 to 10 mass% of an acylmethyl taurine salt-type anionic surfactant, (c) 10 to 50 mass% of a fatty acid salt having a carbon number of 8 to 22, (d) 5 to 25 mass% of a divalent to tetravalent alcohol having a carbon number of 3 to 6 and (e) 15 to 84.9 mass% of water.

Description

  The present invention relates to a body cleansing composition such as a body soap, a hand soap, and a face wash.

  Conventionally, fatty acid salts have been used as main cleaning ingredients in body cleansers such as body soaps, hand soaps, and facial cleansers. This fatty acid salt is excellent in foaming, foam quality and detergency, and has a feature of imparting a refreshing feel. However, there is a problem that the skin is made to feel tight by forming a salt with calcium ions or magnesium ions contained in water. In addition, due to the high detergency, not only dirt on the skin but also natural moisturizing factors are removed, and the moist feeling of the skin is impaired.

In order to solve such a problem, the combined use of an amino acid surfactant and a fatty acid salt, which is a gentle cleaning component for the skin, has been proposed.
Patent Document 1 describes a detergent composition in which a fatty acid salt, an N-acylmethyl taurate salt, a polyoxyethylene alkyl ether, and a monoglycerin fatty acid ester are combined. However, in this composition, the feeling of refreshing was alleviated, but the feeling of refreshing and moist was not fully satisfactory. In addition, the slimy feeling derived from the N-acylmethyl taurine salt remained, and a smooth finish could not be obtained.

  Patent Document 2 describes a detergent composition containing sodium myristic acid, N-coconut fatty acid acylglutamic acid, dipropylene glycol, and glycerin. However, in this composition, although there was a moist feeling, the refreshing feeling was not fully satisfactory. Moreover, the slimy feeling derived from N-coconut fatty acid acylglutamic acid and a polyhydric alcohol remained, and a smooth finish could not be obtained.

  Patent Document 3 describes a detergent composition containing N-lauroylmethyltaurine, N-methyltaurine sodium, soap, and glycerin. However, in this composition, although the moist feeling was improved, the refreshing feeling was not fully satisfactory. Moreover, the N-methyl taurine sodium of N-lauroylmethyl taurine and the slimy feeling derived from glycerin remained, and the smooth finish was not able to be obtained.

  Thus, even if the problem of fatty acid salt is solved to some extent, another problem arises, and there is a refreshing feeling and a moist feeling, but a body cleansing composition that can feel a feeling of tension and sliminess Was desired.

  Also, when washing the skin to which oil has adhered, for example, when washing the skin after using a sunscreen containing silicone oil, liquid fatty acid, liquid ester oil, liquid hydrocarbon, etc. on the skin, foaming (foaming) In some cases, cleaning was difficult.

JP 2002-155295 A International Publication No. 2004/061060 JP 2000-178590 A

  The present invention relates to a body cleanser composition such as a body soap, hand soap, and facial cleanser, and more specifically, after washing using the composition, the skin is refreshed and moisturized while being refreshed. It is possible to provide a body cleansing composition which can feel a feeling of sensation and a feeling of sliminess and is excellent in foaming property even in the presence of an oil component.

  As a result of intensive studies, the present inventors have found that the salt of acylmethyl-β-alanine and taurine salt represented by the following formulas (I) and (II), the acylmethyl taurine salt type anion represented by formula (III) The above-mentioned problems have been solved by a body cleansing composition containing a specific surfactant, a predetermined fatty acid salt, a predetermined alcohol, and water in a specific ratio.

（式中のＲ^１ＣＯは炭素数８〜２２のアシル基を示し、Ｘ^＋は式（II）で表される。）

（式中のＭ^１はアルカリ金属原子、１／２アルカリ土類金属原子、アンモニウム、有機アンモニウムを示す。）
（ｂ）式（III）で示されるアシルメチルタウリン塩型陰イオン性界面活性剤を２〜１０質量％、

（式中のＲ^２ＣＯは炭素数８〜２２のアシル基を示す。Ｍ^２はアルカリ金属原子、アルカノールアミンまたは塩基性アミノ酸を示す。）
（ｃ）炭素数８〜２２の脂肪酸塩を１０〜５０質量％、
（ｄ）炭素数３〜６の２〜４価アルコールを５〜２５質量％、
（ｅ）水を１５〜８４．９質量％
含有することを特徴とする身体洗浄剤組成物である。なお、上記（ａ）〜（ｅ）成分の合計は１００質量％である。 That is, the present invention
(A) 0.1 to 10% by mass of a salt of acylmethyl-β-alanine and taurine salt represented by formulas (I) and (II),

(R ¹ CO in the formula represents an acyl group having 8 to 22 carbon atoms, and X ⁺ is represented by formula (II).)

(M ¹ in the formula represents an alkali metal atom, a 1/2 alkaline earth metal atom, ammonium, or organic ammonium.)
(B) 2 to 10% by mass of an acylmethyl taurine salt type anionic surfactant represented by the formula (III),

(R ² CO in the formula represents an acyl group having 8 to 22 carbon atoms. M ² represents an alkali metal atom, an alkanolamine or a basic amino acid.)
(C) 10 to 50% by mass of a fatty acid salt having 8 to 22 carbon atoms,
(D) 5 to 25% by mass of a 3 to 6 carbon dihydric or tetrahydric alcohol,
(E) 15-84.9 mass% of water
It is a body cleaning composition characterized by containing. In addition, the sum total of the said (a)-(e) component is 100 mass%.

  According to the body cleansing composition of the present invention, after washing using the composition, the skin can feel a refreshing and moist feeling, and can feel a sense of lack of firmness and sliminess. Even in the presence of an oil component, an effect of excellent foaming properties can be obtained.

  Hereinafter, embodiments of the present invention will be described. The body cleansing composition of the present invention comprises (a) component acylmethyl-β-alanine and taurine salt, (b) acylmethyltaurine type anionic surfactant, (c) component fatty acid salt, ( d) The component alcohol and (e) water. Hereinafter, each component will be described.

[(A) component]
The component (a) used in the present invention is a salt of acylmethyl-β-alanine and taurine salt represented by the above formulas (I) and (II). RCO ^{1 in} the formula of formula (I) is an acyl group having 8 to 22 carbon atoms, such as lauroyl group, myristoyl group, palmitoyl group, stearoyl group, and oleoyl group. Moreover, the acyl group derived from a mixed fatty acid can be used, and examples of the mixed fatty acid include coconut oil fatty acid and palm kernel oil fatty acid. Preferred examples of the acyl group include lauroyl group, myristoyl group, coconut oil fatty acid acyl group, and palm kernel oil fatty acid acyl group. More preferred are a lauroyl group, a coconut oil fatty acid acyl group, and a palm kernel oil fatty acid acyl group. If the carbon number of R ¹ CO is 7 or less, the creamy property of the foam may be lowered, and if the carbon number is 23 or more, the foaming property may be lowered.

X ⁺ in the formula (I) is a taurine salt represented by the above formula (II). M ¹ in the formula (II) represents an alkali metal atom, a 1/2 alkaline earth metal atom, ammonium, or organic ammonium. Specifically, sodium, potassium as alkali metal atoms, 1/2 magnesium, 1/2 calcium as 1/2 alkaline earth metal atoms, monoethanolammonium, diethanolammonium, triethanolammonium, arginine as organic ammonium And lysine hydrochloride. Sodium, potassium, 1/2 magnesium and 1/2 calcium are preferable, and sodium and potassium are particularly preferable.

  The salt of acylmethyl-β-alanine and taurine salt represented by formula (I) and formula (II) can be obtained, for example, by the following method. An acylmethyl-β-alanine sodium aqueous solution is prepared by acylating sodium N-methyl-β-alanine with a fatty acid chloride in the presence of alkali, preferably in the presence of sodium hydroxide. This aqueous solution of acylmethyl-β-alanine contains sodium chloride, and in order to remove it, the aqueous layer is acidified with an acid such as sulfuric acid, so that acylmethyl-β-alanine and sodium chloride in the oil layer are removed. Separate and purify the aqueous layer. To this acylmethyl-β-alanine, a taurine salt as a target counter ion is charged 1.0 to 1.2 times the number of moles of acylmethyl-β-alanine, so that acylmethyl-β-alanine and taurine salt are mixed. Salts can be prepared. The salt of acylmethyl-β-alanine and taurine salt represented by formula (I) and formula (II) prepared by this method has an aqueous solution pH of 6-8.

  In the composition of the present invention, the content of the component (a) is usually 0.1 to 10% by mass, preferably 0.3 to 7% by mass, and more preferably 1 to 4% by mass. If the content of the component (a) is less than 0.1% by mass, the feeling of tension due to the fatty acid salt may not be improved. If the content of the component (a) exceeds 10% by mass, the refreshing feeling due to the fatty acid salt may be inhibited. There is a risk that.

[Component (b)]
The component (b) used in the present invention is an acylmethyl taurine salt type anionic surfactant represented by the above formula (III). R ² CO in the formula (III) is an acyl group having 8 to 22 carbon atoms, for example, a lauroyl group, a myristoyl group, a palmitoyl group, a stearoyl group, or an oleoyl group. Moreover, the acyl group derived from a mixed fatty acid can be used, and examples of the mixed fatty acid include coconut oil fatty acid and palm kernel oil fatty acid. Preferred examples of the acyl group include lauroyl group, myristoyl group, coconut oil fatty acid acyl group, and palm kernel oil fatty acid acyl group. More preferred are a lauroyl group, a coconut oil fatty acid acyl group, and a palm kernel oil fatty acid acyl group. If the carbon number of R ² CO is 7 or less, the foamy creaminess and the foaming property in the presence of an oil component may be lowered, and if the carbon number is 23 or more, the foaming property may be lowered.

M ² in the formula (III) represents an alkali metal atom, an alkanolamine or a basic amino acid, and examples thereof include sodium, potassium, monoethanolammonium, diethanolammonium, triethanolammonium, arginine, and lysine hydrochloride.

  In the composition of the present invention, the content of the component (b) is usually 2 to 10% by mass, preferably 5 to 8% by mass. If the content of the component (b) is less than 2% by mass, the foaming property in the presence of the oily component may be lowered, and if the content of the component (b) exceeds 10% by mass, there will be a problem in stability over time. There is a fear.

[Component (c)]
The component (c) used in the present invention is a fatty acid salt having 8 to 22 carbon atoms. Examples of the fatty acid salt having 12 to 22 carbon atoms include caprylate, caprate, laurate, myristate, palmitate, isopalmitate, stearate, isostearate and oleate. Of these, one or more of them can be used. Moreover, the mixed fatty acid which is a mixture of fatty acid salts can be used, and examples thereof include coconut oil fatty acid salt, palm kernel oil fatty acid salt, and beef tallow fatty acid salt. Preferably, laurate, myristate, palmitate, stearate, oleate, coconut oil fatty acid salt, palm kernel oil fatty acid salt, more preferably laurate, myristate, palmitate , Stearate.

  Examples of the counter ion forming the fatty acid salt include sodium, potassium, ammonium, monoethanolammonium, diethanolammonium, and triethanolammonium. Preferred are sodium, potassium and triethanolammonium, and more preferred is potassium.

  In the composition of the present invention, the content of the component (c) is usually 10 to 50% by mass, preferably 20 to 40% by mass, and more preferably 27 to 35% by mass. When the content of the component (c) is less than 10% by mass, the foamability and foam creaminess may be lowered, and when the content of the component (c) exceeds 50% by mass, there may be a problem in handling properties. .

  The ratio (c) / (a) of the component (a) to the component (c) is preferably 3 to 120, particularly preferably 10 to 40. If (c) / (a) exceeds 120, the improvement effect of the feeling of tension may be reduced, and if it is less than 3, it may be difficult to feel the feeling of refreshing.

[Component (d)]
The component (d) used in the present invention is a divalent to tetravalent alcohol having 3 to 6 carbon atoms. Examples of such alcohol include glycerin, diglycerin, 1,3-butylene glycol, propylene glycol, dipropylene glycol, and isopentyl diol. Glycerin, 1,3-butylene glycol, and propylene glycol are preferable, and glycerin is more preferable.

  Content of (d) component in the composition of this invention is 5-25 mass% normally, Preferably it is 7-20 mass%, More preferably, it is 10-15 mass%. When the content of the component (d) is less than 0.5% by mass, the moist feeling may be poor, and when the content of the component (d) exceeds 25% by mass, the refreshing feeling may be lowered and the feeling of slimness may be generated. There is.

  The ratio (c) / (d) of the component (d) to the component (c) is preferably 1 to 7, particularly preferably 1.5 to 3. If (c) / (d) exceeds 7, it may be difficult to feel a moist feeling.

In the body cleaning composition of the present invention, other components generally used in body cleaning agents can be appropriately blended as long as the effects of the present invention are not impaired.
Examples of such components include amphoteric surfactants such as imidazolinium betaine type amphoteric surfactants and sulfobetaine type amphoteric surfactants, higher fatty acid alkanolamide type nonionic surfactants, and amine oxide type nonionic surfactants. Surfactants, nonionic surfactants such as polyoxyethylene alkyl ether type nonionic surfactants, cationic surfactants such as alkyltrimethylammonium chloride and dialkyldimethylammonium chloride, and foam increasing agents such as higher alcohols Pearl gloss imparting agents such as ethylene glycol distearate and triethylene glycol distearate, thickeners such as methylcellulose, hydroxypropylmethylcellulose, carboxyvinyl polymer, xanthan gum, polyethylene glycol, amino acids, tan Moisturizers such as sucrose hydrolysates, oils such as squalane, jojoba oil, olive oil, castor oil, lanolin, lecithin, silicone derivatives such as highly polymerized methylpolysiloxane, dimethylsiloxane methyl (polyoxyethylene) siloxane copolymer, Preservatives such as parabens, bactericides such as salicylic acid, isopropylmethylphenol, triclosan, zinc pyrithione, piroctone olamine, pH adjusters such as citric acid and sodium citrate, metal ions such as edetate and hydroxyethanediphosphonic acid Sequestrants, UV absorbers such as 2-methoxyhexyl paramethoxycinnamate, oxybenzone, 2-ethylhexyl paradimethylaminobenzoate, antioxidants such as dibutylhydroxytoluene and tocopherol acetate, extract extracts from animals and plants , Mention may be made of dyes, perfumes and the like.

Hereinafter, the present invention will be described more specifically with reference to examples and comparative examples.
Body cleansing compositions of Examples-1 to 12 shown in Table 1 and Comparative Examples-1 to 15 shown in Table 2 were prepared and evaluated by the following methods. In Tables 1 and 2, “Na” represents sodium.

(1) Refreshing feeling after use Ten men and women of 20 to 50 years old were panelists, and the refreshing feeling when the face was washed with 3 g of the body cleaning composition was evaluated. 2 points for feeling refreshed, 1 point for feeling slightly refreshed, 0 for feeling unsatisfactory, and the following 4 levels from the total score of 20 people evaluated.

(Evaluation criteria)
◎: Very refreshing feeling (30 points or more in total)
○: Feel refreshed (total score 20 points or more and less than 30 points)
Δ: Feel a little refreshed (total score of 10 points or more and less than 20 points)
×: Feeling refreshed (total score less than 10)

(2) Feeling of tension after use Ten men and women of 20 to 50 years old were panelists, and the feeling of feeling when they were washed with 3 g of the body cleaning composition was evaluated. Two points are given when the feeling of tension is not felt so much, one point when the feeling of feeling is slightly felt, and 0 points when a feeling of tension is felt. evaluated.

(Evaluation criteria)
◎: There is no feeling of tension (total of 30 points or more)
○: Does not feel a sense of tension (total 20 points or more and less than 30 points)
△: Slightly felt (total 10 or more and less than 20)
×: Feeling a sense of tension (total score less than 10)

(3) Moist feeling after use Ten men and women of 20 to 50 years old were panelists, and the moist feeling when the face was washed with 3 g of the body cleaning composition was evaluated. 2 points for feeling moist, 1 point for feeling slightly moist, 0 for feeling less moist, from the total score of 20 people to the next 4 levels evaluated.

(Evaluation criteria)
◎: I feel very moist (more than 30 points in total)
○: feels moist (total 20 points or more and less than 30 points)
Δ: Slightly moist feeling (total score of 10 points or more and less than 20 points)
×: Does not feel moist (total score less than 10 points)

(4) Lusty feeling after use Ten men and women of 20 to 50 years old were panelists, and the slimy feeling when the face was washed with 3 g of the body cleaning composition was evaluated. 2 points when the feeling of sliminess was not felt so much, 1 point when the feeling of sliminess was felt slightly, and 0 points when the feeling of sliminess was felt. It was rated in 4 grades.

(Evaluation criteria)
◎: No feeling of sliminess (total score of 30 points or more)
○: Does not feel slimy (total 20 points or more and less than 30 points)
Δ: Slightly feel a feeling of sliminess (total score of 10 points or more and less than 20 points)
X: Feeling slimy (less than 10 points in total)

(5) Foamability in the presence of oily components 10 males and females 20 to 50 years old are used as panels, and 3 g of an oily sunscreen composition having the following composition is used on the face. The foaming property (foaming) when the face was washed using was evaluated. 2 points when feeling foaming is good, 1 point when feeling foaming is slightly good, 0 point when feeling foaming is bad, and from the total score of 20 people, Three grades were evaluated.

(Evaluation criteria)
○: Foaming property is good (total score 30 points or more)
Δ: Slightly good foaming properties (total 20 or more and less than 30)
×: Poor foaming property (total point less than 20 points)

  * Sunscreen composition: cyclopentasiloxane: 57.7% by mass, titanium oxide: 20% by mass, water: 10% by mass, dimethicone: 5% by mass, ethanol: 5% by mass, PEG-9 polydimethylsiloxyethyl dimethicone: 1% by mass, PEG-10 dimethicone: 1% by mass, methyl paraben: 0.2% by mass, propyl paraben: 0.1% by mass.

  From the results shown in Table 1, in Examples-1 to 12, after washing, the skin has a refreshing feeling and moist feeling, but it can feel a feeling of firmness and sliminess, and it occurs even in the presence of oily components. It turns out that it is a body cleaning composition excellent in foamability.

  On the other hand, since Comparative Example-1 shown in Table 2 does not contain the component (a), a feeling of tension and a feeling of sliminess were felt. Since Comparative Example-2 did not contain the component (b), the foamability in the presence of the oil component was poor. Since Comparative Example-3 did not contain the component (c), the moist feeling was not satisfactory.

  In Comparative Examples 4 and 5, since the content of the component (a) was outside the specified range of the present invention, the refreshing feeling and the slimy feeling were not satisfactory. In Comparative Example-6, since the content of the component (b) exceeds the specified upper limit according to the present invention, the refreshing feeling, the feeling of feeling, and the feeling of moistness are not satisfactory. In Comparative Example-7, since the content of the component (b) was less than the specified lower limit according to the present invention, the foaming property in the presence of the oil component was not satisfactory.

  In Comparative Example-8, since the content of the component (d) exceeded the specified upper limit according to the present invention, the refreshing feeling was poor and the feeling of slimness was felt. In Comparative Example-9, since the content of the component (d) was less than the specified lower limit according to the present invention, the moist feeling was not satisfactory. In Comparative Example-10, since the content of the component (c) exceeded the specified upper limit according to the present invention, a feeling of tension was felt and the feeling of moistness was poor. In Comparative Example-11, since the content of the component (c) was less than the specified lower limit according to the present invention, the refreshing feeling was poor.

  In Comparative Examples 12 to 15, since the component (a) was changed to another compound, it was not satisfactory or poor in any of moist feeling, tight feeling and slimy feeling.

Claims (1)

(A) 0.1 to 10% by mass of a salt of acylmethyl-β-alanine and taurine salt represented by formulas (I) and (II),

(R ¹ CO in the formula represents an acyl group having 8 to 22 carbon atoms, and X ⁺ is represented by formula (II).)

(M ¹ in the formula represents an alkali metal atom, a 1/2 alkaline earth metal atom, ammonium, or organic ammonium.)
(B) 2 to 10% by mass of an acylmethyl taurine salt type anionic surfactant represented by the formula (III),

(R ² CO in the formula represents an acyl group having 8 to 22 carbon atoms. M ² represents an alkali metal atom, an alkanolamine or a basic amino acid.)
(C) 10 to 50% by mass of a fatty acid salt having 8 to 22 carbon atoms,
(D) 5 to 25% by mass of a 3 to 6 carbon dihydric or tetrahydric alcohol,
(E) 15-84.9 mass% of water
A body cleanser composition comprising: