JP5577058B2 - Washing soap - Google Patents

Description

  The present invention relates to a cleaning agent.

  Conventionally, anionic surfactants such as alkyl sulfates, sulfonates, and higher fatty acid salts have been widely used for skin cleansing agents as a main component because of their high foaming characteristics. However, these anionic surfactants have a problem that they feel refreshed and soft, although a refreshing feel can be obtained after washing. A skin cleaning method (Patent Document 1) has been proposed as a method of reducing the feeling of tension after washing and giving moisturized moisture, by applying a detergent containing a high amount of polyhydric alcohol directly to the skin without foaming. . However, in skin cleansing agents, it is common to apply foaming agents to the face after lathering and cleansing while massaging, so the original usage method of applying directly without lathering is not made. In many cases, the effect was not exhibited.

On the other hand, the “foam-type detergent”, which is filled with a detergent composition in a former container and discharged in the form of foam, can be washed while being massaged with fine foam and has little friction on the skin. It is widely used because it is simpler than foaming the agent. Foam type detergent is also used by directly applying foam discharged from the former container to the skin, so if polyhydric alcohol is mixed in the detergent, it is expected to get moist moist after washing. Is done.
However, when polyhydric alcohol is highly blended in the cleaning material, the viscosity of the composition increases, and when used in a former container, the foam dischargeability is deteriorated. In particular, there was a problem that the foam was rough and the shape retention was poor at low temperatures (Patent Documents 2 and 3). For this reason, it was not possible to highly blend polyhydric alcohol in the cleaning composition filled in the former container.

JP 2001-172168 A JP 2004-137247 A JP 2008-94903 A

  The object of the present invention is to contain a large amount of polyhydric alcohol and realize a moist and moist wash after washing, while the viscosity of the washing agent is low, and it is fine and fine even at low temperatures, even when filled in a former container An object of the present invention is to provide a cleaning agent capable of obtaining a suitable foam.

  The present inventors have found that a cleaning agent that solves the above problems can be obtained by combining a specific anionic surfactant and a polyhydric alcohol having different IOB values.

The present invention includes the following components (A) to (E):
(A) an anionic surfactant having a sulfate group,
(B) a higher fatty acid salt or an ether carboxylic acid type surfactant,
(C) a polyhydric alcohol having an IOB value of 3.4 or more and less than 6.
(D) an IOB value of 0.1 or more and less than 3.4, a polyhydric alcohol or an alcohol represented by the general formula (1),
R ¹ — (OCH ₂ CH ₂ ) _n —OH (1)
(In the formula, R ¹ represents an alkyl group or alkenyl group having 1 to 5 carbon atoms, and n represents a number of 2 to 200)
(E) containing water, the mass proportion of the components (A) to (D)
{(A) + (B)} = 1 to 10% by mass,
(C) = 30-60% by mass,
(D) / (C) = 0.01-1
It is intended to provide a cleaning agent in which a former is filled with a cleaning material.

The cleaning agent of the present invention contains a large amount of polyhydric alcohol and realizes a moist and moist after-washing, while the viscosity of the cleaning agent is low, and it is finely used even when filled in a former container or at a low temperature. Good foam is obtained, and the detergency and stability are also excellent.
In addition, since the detergent of the present invention can be used by directly applying the foam discharged from the former container to the skin, it can take advantage of the prescription characteristics of the detergent containing a high concentration of polyhydric alcohol. .

The anionic surfactant of component (A) used in the present invention has a sulfate group.
Examples of such anionic surfactants include alkyl sulfates, polyoxyalkylene alkyl ether sulfates or salts thereof. Those having a linear or branched alkyl group having 6 to 22 carbon atoms are preferred. Among these, from the viewpoint of low irritation, polyoxyalkylene alkyl ether sulfate is preferable, and polyoxyethylene (average added mole number 0.5 to 8) alkyl ether sulfate is particularly preferable.
In addition, examples of the salt of component (A) include alkali metals such as sodium and potassium; ammonium, mono-, di-, and tri-carbon alkanolamines; basic amino acids such as lysine and arginine.

Component (B) used in the present invention is a higher fatty acid salt or an ether carboxylic acid type surfactant.
The higher fatty acid preferably has a linear or branched alkyl group having 6 to 22 carbon atoms.
The ether carboxylic acid type surfactant is a group of compounds having a hydrophobic group and a carboxyl group via a polyoxyethylene chain or glycol ether unit. For example, alkyl ether acetic acid or a salt thereof, alkyl hydroxy ether acetic acid or The salt, alkyl amide ether acetic acid, or its salt is mentioned. Each of them is represented by the following general formula.

(Wherein R ² , R ³ and R ⁴ each represent an alkyl group or alkenyl group having 10 to 18 carbon atoms, m represents an average number of 0.5 to 10 and X represents a hydrogen atom or an alkali metal. , Ammonium, alkanolamine or basic amino acid)

Examples of the salt of component (B) include the same salts as the salt of component (A), alkali metals such as sodium and potassium; ammonium, mono-, di-, or tri-carbon alkanolamines; lysine, Examples include basic amino acids such as arginine.
As the component (B), a higher fatty acid salt is preferable, and a higher fatty acid salt having 10 to 18 carbon atoms is particularly preferable in terms of high foamability and good maintenance of foam during washing.

In the present invention, fine bubbles can be discharged from the former container by using a combination of (A) an anionic surfactant having a sulfate group and (B) a higher fatty acid salt or an ether carboxylic acid type surfactant. it can.
In the present invention, the content of components (A) and (B) in the cleaning material is preferably 0.5 to 10% by mass, more preferably 1 to 4% by mass, and particularly preferably 1.5 to 3% by mass.

Moreover, content of component (A) and (B) in a washing | cleaning material is 1-10 mass% in total, Preferably it is 2-8 mass%, Most preferably, it is 3-5 mass%. When the total content of components (A) and (B) is 1% by mass or more, the detergency and foam maintenance performance are good, and when the content is 10% by mass or less, the foam can be discharged from the former container at a low temperature. Excellent in stability.
Further, the mass ratio of the components (A) and (B) is (A) / (B) being 0.1 or more and good stability at low temperature storage, and when it is 9 or less, a moist and moist feeling after washing. can get. Furthermore, (A) / (B) = 0.1-4 is preferable from a viewpoint of coexistence of a refreshing feeling and a moist feeling, Especially preferably, it is 0.15-3, More preferably, it is 0.2-2.

The polyhydric alcohol of component (C) used in the present invention has an IOB value of 3.4 or more and less than 6. By using such a polyhydric alcohol, it is possible to realize a moist and moist feeling after washing.
Here, the IOB means an organic conceptual diagram (Akira Fujita, prediction of organic compounds and an organic conceptual diagram, chemistry area Vol. 11, No. 10 (1957) 719-725) and an organic value. This represents a ratio of values (Inorganic Organic Balance), and is obtained by the following equation.

  Specific examples of the component (C) include glycerin (IOB = 5.0); sorbitol (IOB = 5.0), sucrose (IOB = 4.4), maltitol (IOB = 4.4), mannitol (IOB) = 5.0), sugar alcohols such as xylitol (IOB = 5.0), and polyoxyethylene glycoside derivatives such as polyoxyethylene (20) methyl glycoside (IOB = 3.4). Of these, glycerin, sorbitol, and polyoxyethylene glycoside derivatives are preferred in that the skin feel after use is good. In particular, when glycerin or sorbitol is used, the skin feel after use is not sticky and a moist and moist feeling is felt.

  In the present invention, the content of the component (C) in the cleaning material is 30 to 60% by mass. When it is 30% by mass or more, the feeling of moisture after washing is good, and when it is 60% by mass or less, the foam dischargeability from the former container at a low temperature is excellent. Furthermore, 35-50 mass% is preferable and 38-48 mass% is especially preferable at the point of coexistence of the discharge property of foam and the moist feeling after washing | cleaning.

The polyhydric alcohol of the component (D) used in the present invention and the alcohol represented by the general formula (1) have an IOB value of 0.1 or more and less than 3.4.
Such polyhydric alcohols or alcohols can be combined with the polyhydric alcohol of component (C) to lower the liquid viscosity of the cleaning material, particularly at low temperatures, and produce fine fine bubbles from the former container. Can be obtained.
The polyhydric alcohol of the component (C) can obtain a particularly high moisturizing effect among the polyhydric alcohols. However, when blended in the cleaning material, the viscosity becomes high and the texture of the foam discharged at a low temperature becomes rough. Therefore, it is difficult to blend a large amount alone. In the present invention, by combining the component (D) together with the component (C), the viscosity of the cleaning material can be lowered, and the polyhydric alcohol of the component (C) can be blended in a large amount.

  Specific examples of component (D) include linear or branched glycols, monoalkyl mono, di, or trialkyl glycol ethers, polyethylene glycol, polypropylene glycol, and polyoxyethylene glycol. Among these, 1,3-butylene glycol (IOB = 2.5), isoprene glycol (IOB = 2.0), propylene glycol (IOB = 3.3), dipropylene glycol (IOB = 1.8), etc. Glycol having 2 to 10 carbon atoms; diethylene glycol monoethyl ether (IOB = 1.6), polypropylene glycol having a molecular weight of 100 to 10,000, polyethylene glycol having a molecular weight of 100 to 10,000, and an average added mole number of oxyethylene of 4 -20 polyoxyethylene diglyceryl ether is preferable, and isoprene glycol, 1,3-butylene glycol, and diethylene glycol monoethyl ether are particularly preferable.

In the present invention, the total content of the component (D) in the cleaning material is preferably 0.5 to 30% by mass, more preferably 1 to 15% by mass, and particularly preferably 2 to 10% by mass.
Moreover, content of a component (D) is determined by the mass ratio with a component (C), and it is (D) / (C) = 0.01-1 that a polyhydric alcohol (C) and (D ) Has a large effect of reducing the viscosity of the cleaning material, the foam obtained from the former container is fine, and the visibility is good. Furthermore, mass ratio (D) / (C) = 0.05 to 0.8 is preferable and 0.1 to 0.5 is particularly preferable in that the effect of reducing the viscosity of the cleaning material is high.

Among the components (D), (D1) a polyhydric alcohol having an IOB value of 0.1 or more and less than 1.8, and (D2) a polyhydric alcohol having an IOB value of 1.8 or more and less than 3.4. It is preferable to use in combination because the effect of lowering the liquid viscosity of the cleaning material is further increased, and compared with the case where only the component (D1) is contained, the formation of precipitates at low temperatures and the turbidity of the solution can be suppressed. .
Specific examples of (D1) include diethylene glycol monoethyl ether, polypropylene glycol having a molecular weight of 400 or more, particularly diethylene glycol monoethyl ether (IOB = 1.6), polypropylene glycol-9 (IOB = 0.67). Is preferred.
Specific examples of (D2) include 1,3-butylene glycol, isoprene glycol, propylene glycol, dipropylene glycol, polypropylene glycol having a molecular weight of less than 400, polyethylene glycol having a molecular weight of 100 to 10,000, and the like. In particular, isoprene glycol (IOB = 2.0) and 1,3-butylene glycol (IOB = 2.5) are preferable.

  The mass ratio of the components (D1) and (D2) is such that (D1) / (D2) is 9 or less, and the formation of precipitates and turbidity of the solution during storage at low temperatures are less likely to occur. The effect of reducing the liquid viscosity is sufficient. Further, (D1) / (D2) = 0.2 to 5 is preferable, and 0.4 to 1 is particularly preferable.

The cleaning material used in the present invention can further contain (F) an amphoteric surfactant, improve the maintenance performance of foam during cleaning, and improve the massage feeling.
Specific examples of such amphoteric surfactants include amphoteric compounds such as carbobetaines, sulfobetaines, imidazolium betaines, amide betaines, phosphobetaines, amine oxides, etc. having a hydrocarbon group of 7 to 23 carbon atoms. A surfactant is preferred. Of these, carbobetaines, sulfobetaines, amidebetaines, and amine oxides are more preferable, and lauramidopropylbetaine and laurylhydroxysulfobetaine are particularly preferable.

  The component (F) is preferably contained in the cleaning material in an amount of 1 to 20% by mass, more preferably 3 to 15% by mass, and particularly preferably 7 to 13% by mass. In the case where the component (F) is 20% by mass or less, the viscosity of the cleaning material is low, the fineness of the foam discharged from the former container is fine and good, and the effect of improving the foam maintenance property by 1% by mass or more is remarkable. And the feeling of massage by the foam during washing becomes good.

  The cleaning material used in the present invention can further contain (G) a nonionic surfactant having a glucose skeleton, and can improve the cleaning power. Specific examples of the component (G) include alkyl glycosides represented by the following general formula (2).

R ⁵ − (OR ⁶ ) _x −G _y (2)
[Wherein, R ⁵ represents a linear or branched alkyl group having 8 to 18 carbon atoms, an alkenyl group, or an alkylphenyl group, R ⁶ represents an alkylene group having 2 to 4 carbon atoms, and G represents a glucose skeleton. Represents a residue, x represents a number with an average value of 0 to 5, and y represents a number with an average value of 1 to 10]

R ⁵ preferably has 10 to 14 carbon atoms from the viewpoint of solubility, foamability and detergency. R ⁶ is an alkylene group having 2 to 4 carbon atoms, and an alkylene group having 2 to 3 carbon atoms is preferable from the viewpoint of solubility in water.
The component (G) is preferably contained in the cleaning material in an amount of 0.5 to 5% by mass, more preferably 0.8 to 4% by mass, and particularly preferably 1 to 3% by mass, since the cleaning power is remarkably improved.

The cleaning material used in the present invention can further contain (H) a nonionic surfactant having a branched alkyl group, and can suppress the formation of precipitates and turbidity of the solution during low-temperature storage.
Specific examples include mono-, di-, tri-fatty acid polyoxyalkylene glyceryl, polyoxyethylene castor oil (including hydrogenated castor oil), mono-, di-, tri-fatty acid polyoxyethylene castor oil (including hydrogenated castor oil), and the like. Among these, those having a branched alkyl group having 6 to 22 carbon atoms are preferable. Examples of polyoxyalkylene include polyoxyethylene and polyoxypropylene, with polyoxyethylene being preferred. Furthermore, fatty acid polyoxyethylene hydrogenated castor oil and fatty acid polyoxyethylene glyceryl are preferable, and in particular, the total number of repeating units of polyoxyethylene is 3 to 30 on average, polyoxyethylene hydrogenated castor oil, polyoxyethylene isostearate Glyceryl is preferred.
The component (H) is contained in the cleaning material in an amount of 0.1 to 3% by mass, more preferably 0.1 to 2% by mass, particularly 0.2 to 1% by mass, which improves the stability of the cleaning material at low temperatures. Can be preferred.

  In the present invention, (E) water is preferably contained in the cleaning material in an amount of 30 to 60% by mass, particularly 40 to 50% by mass. Within this range, the foam discharged from the former container is fine at low temperatures, and a moist and moist feeling after washing can be obtained.

  In addition to the above components, the cleaning agent used in the present invention, if necessary, further components used in ordinary cleaning compositions, for example, lanolin and its derivatives, esters such as isopropyl myristate, coconut oil, etc. Oils such as triglycerides of fatty acids; moisturizers such as polyglycerol fatty acid esters; fungicides such as triclosan and trichlorocarbanilide; anti-inflammatory agents such as dipotassium glycyrrhizinate and tocopherol acetate; anti-dandruff agents such as zinc pyrithione and octopirox; methyl parabens Preservatives such as butylparaben; chelating agents such as ethylenediaminetetraacetic acid or salts thereof, hydroxyethanediphosphonic acid or salts thereof; pH adjusting agents such as citric acid and succinic acid; salts such as sodium chloride; Perfumes, dyes, UV absorbers, antioxidants, etc. It can be blended in s not range.

The cleaning material used in the present invention can be produced by mixing all the components by an ordinary method. The viscosity at 5 ° C. is preferably 60 mPa · s or less, more preferably 5 to 50 mPa · s, particularly 5 to 30 mPa · s, because the foam discharged from the former container is fine and the shape retention is good. Therefore, it is preferable.
In the present invention, the viscosity is 5 ° C. using a B-type (Brookfield) viscometer, with a predetermined rotation speed (100 mPa · s or less is 60 rpm, 100 mPa · s or more is 30 rpm), and measurement time is 1 minute. Measured.

The cleaning material thus obtained is filled in the former container. The former container has a porous film, and examples of the porous film include a sponge, a sintered body, and a net. Among these porous membranes, when the cleaning liquid remaining on the membrane is clogged by drying and solidifying, the solidified product can be immediately dissolved by the flow of bubbles at the next discharge, so that clogging can be eliminated. A thin net is preferred. The net is preferably 50 to 500 mesh, and particularly preferably 200 to 400 mesh in order to produce good foam. Moreover, nylon, polyester, etc. are mentioned as a preferable material of such a mesh.
The container preferably has a plurality of such films, and in particular, from the viewpoints of economy, foam stability, and the like, it is preferable that there are two.

  The former container may be any one as long as it mixes a certain amount of cleaning liquid with a certain amount of air and discharges it in a foam state. A squeeze foamer used by pressing the body of a soft container described in Japanese Patent Publication No. 52-16567 or the like; for example, Japanese Utility Model Publication No. 3-7963, Japanese Utility Model Publication No. 62-103458 And a pump former used by pressing the head of a cap provided with a pump mechanism described in JP-A-7-315463 with a finger.

  The cleaning agent of the present invention can be a face washing foam, a cleansing foam, a makeup remover foam, a shaving foam, a shampoo foam, a body washing foam, or the like. In particular, it is useful as a cleansing foam and a makeup removal foam.

  The cleaning agent of the present invention is used by taking the foam discharged from the former container, applying it directly to the skin as it is without diluting it with water, massaging it by applying well, and then rinsing with water.

Examples 1-19, Comparative Examples 1-9
Liquid detergent compositions having the compositions shown in Tables 1 and 2 were prepared and filled in a former container (160 mL [YF-9413, manufactured by Yoshino Kogyo Co., Ltd.]) to produce a detergent. About the obtained cleaning agent, liquid viscosity, discharge property at low temperature, solution state at low temperature, skin feel after cleaning, maintenance of foam during cleaning, and cleaning power were evaluated by the following methods. The results are shown in Tables 1 and 2 together.

(Evaluation method)
(1) Liquid viscosity:
At 5 ° C., a B type (Brookfield) viscometer (TVB-10 type viscometer, manufactured by Toki Sangyo Co., Ltd.) was used. 1, the liquid viscosity was measured at a predetermined rotation speed (60 rpm for 100 mPa · s or less, 30 rpm for 100 mPa · s or more) in a measurement time of 1 minute.

(2) Dischargeability at low temperature:
Ten professional evaluators evaluated the state of foam discharged from the former container at 5 ° C visually by the following (I) 5-level evaluation criteria, and had the average score (II) 4-level determination criteria According to the above, the foam dischargeability at low temperature was determined.

(I) Five-level evaluation criteria;
Score 4: Fine texture of foam and uniform throughout.
Rating 3; Although the texture of the foam is fine, slightly coarse bubbles are mixed.
Rating 2: The texture of the bubbles is fine, but slightly coarse bubbles are mixed.
Score 1; fine texture of bubbles, but many coarse bubbles are mixed.
Score 0: The texture of the foam is rough.
(II) 4-step criteria;
A: Average score of 3.0 or more.
○: Average score of 2.0 or more and less than 3.0.
Δ: Score average of 1.0 or more and less than 2.0.
X: Score average less than 1.0.

(3) Solution state at low temperature:
Each cleaning material was stored at −5 ° C. for 1 week, then visually evaluated, and determined according to the following four-step criteria.
A: No precipitation or turbidity occurs.
○: The solution is slightly turbid but translucent.
Δ: Turbidity is strong, but no separation is visually confirmed.
X: Separation such as precipitation is visually confirmed.

(4) Skin feel after washing:
10 professional evaluators actually used the cleaning agent, and sensory evaluation of the skin feel after cleaning was performed according to the following (I) 5-level evaluation criteria, and the average value of the score (II) 4-level determination Skin feel was determined according to standards.

(I) Five-level evaluation criteria;
Rating 4: Feels moist.
Score 3; I feel a little moist.
Score 2; feels slightly moist.
Score 1; feels slightly moist.
Score 0: I do not feel moist.
(II) 4-step criteria;
A: Average score of 3.0 or more.
○: Average score of 2.0 or more and less than 3.0.
Δ: Score average of 1.0 or more and less than 2.0.
X: Score average less than 1.0.

(5) Maintaining foam during cleaning:
Ten professional evaluators actually used each cleaning agent, and the number of evaluators who answered that the feel of foam during massage was good was determined according to the following evaluation criteria.
A: 8 or more people.
○: 6 to 7 people.
Δ: 3 to 5 persons.
X: 2 or less.

(6) Detergency (make-up removal):
The forearm part to which oily solid lipstick was applied at a ratio of 10 mg / 5 cm ² was washed with 1 g of foam discharged from the former container for 30 seconds, and the amount of the remaining lipstick was visually determined according to the following evaluation criteria.
◎; almost completely falls.
○: Almost falls.
Δ: Slightly falls.
X: No fall at all.

Claims (8)

The following components (A) to (E):
(A) an anionic surfactant having a sulfate group,
(B) a higher fatty acid salt or an ether carboxylic acid type surfactant,
(C) a polyhydric alcohol having an IOB value of 3.4 or more and less than 6.
(D) an IOB value of 0.1 or more and less than 3.4, a polyhydric alcohol or an alcohol represented by the general formula (1),
R ¹ — (OCH ₂ CH ₂ ) _n —OH (1)
(In the formula, R ¹ represents an alkyl group or alkenyl group having 1 to 5 carbon atoms, and n represents a number of 2 to 200)
(E) containing water, the mass proportion of the components (A) to (D)
{(A) + (B)} = 1 to 10% by mass,
(C) = 30-60% by mass,
(D) / (C) = 0.01-1
A cleaning agent in which a former is filled with a cleaning material.   The cleaning agent according to claim 1, wherein the component (C) is glycerin or sorbitol, and the content is 30 to 60% by mass. Component (D) is
The cleaning according to claim 1 or 2, wherein (D1) a polyhydric alcohol having an IOB value of 0.1 or more and less than 1.8, and (D2) a polyhydric alcohol having an IOB value of 1.8 or more and less than 3.4. Agent.   The cleaning agent according to claim 3, wherein the component (D1) / (D2) is 0.2 to 5.   The cleaning agent according to any one of claims 1 to 4, wherein the viscosity of the cleaning material at 5 ° C is 60 mPa · s or less. Further, the cleaning agent according to any one of claims 1 to 5 containing (F) amphoteric surfactant.   The cleaning agent according to claim 1, further comprising (G) a nonionic surfactant having a glucose skeleton.   The cleaning agent according to any one of claims 1 to 7, further comprising (H) a nonionic surfactant having a branched alkyl group.