TW201404408A - Liquid cleansing agent in non-gas foaming container - Google Patents

Abstract

The present invention provide a liquid cleansing agent in a non-gas foaming container, of which the foam has delicate and creamy texture, good slidability to the skin, no sticky feeling during rinsing, and may bring good usage feeling for making skin softer after washing, and have good dispensing property. The liquid cleansing agent in a non-gas foaming container contains the following ingredients: (A) N-acyl amino acids or its salts in 2-10 wt.% for the acid; (B) amphoteric surfactant in 0.2-3 wt.%; (C) glycerin in 5-28 wt.%; and (D) polyethylene glycol with quantity average molecular weight of 1500-20000 in 2-8 wt.%, wherein the mass ratio for the contents of ingredient (A) and ingredient (B) ((B)/(A)) is above 0.05 and below 1.5; the total content of ingredient (C) and ingredient (D) is 10-30 wt.%; and, the viscosity of the liquid cleansing agent below 25 deg C is 1-20 mPa·s.

Description

Liquid detergent filled in a gas-free foaming container

This invention relates to a liquid detergent incorporating a non-gas foamer container.

A detergent for skin cleansing, such as a body wash, has been required to be less irritating to the skin in recent years, and has a good foam quality, a feeling of use, and the like. N-mercapto acid amino acid salt is an anionic surfactant with low skin irritation, but compared with other anionic surfactants such as fatty acid salts, alkyl sulfate salts or polyoxyethylene alkyl sulfates. There is room for improvement in foam quality or feeling of use, and various detergents using the N-mercapto acid amino acid salt have been developed so far.

For example, Patent Document 1 discloses a detergent obtained by using 2 to 30% by mass of a thiol glutamic acid-based surfactant and a hydrated and heat-generating substance such as glycerin, and adding water during application. Gives the skin a warmth and improves foaming. Further, in Patent Document 2, a detergent obtained by using 3 to 20% by mass of a specific polyol and a tackifier in an amount of 3 to 30% by mass of an alkanolamine salt of a mercapto amino acid is obtained. The quality of the foam and good use.

On the other hand, Patent Document 3 discloses that the N-mercapto-amino acid-based anionic active agent is contained in an amount of 1 to 5% by mass, the amphoteric surfactant is used in an amount of 1 to 5% by mass, and the polyol is 30 to 50% by mass. Further, Patent Document 4 discloses that a N-mercaptoamino acid type anionic surfactant and an amphoteric surfactant are set to a specific amount ratio, and A detergent having a polyethylene glycol having a specific average molecular weight is used, and the above-mentioned detergents all attempt to improve the foam quality and improve the low-temperature stability and the like.

[Previous Technical Literature] [Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open Publication No. 2004-292584

[Patent Document 2] Japanese Patent Laid-Open Publication No. 2004-137247

[Patent Document 3] Japanese Patent Laid-Open Publication No. 2010-59247

[Patent Document 4] Japanese Patent Laid-Open Publication No. 2009-120546

The present invention provides a liquid detergent filled in a gas-free foaming container, which comprises the following components (A), (B), (C) and (D): (A) N-decylamino acid or Salt - 2 to 10% by mass based on acid, (B) amphoteric surfactant - 0.2 to 3% by mass, (C) glycerol - 5 to 28% by mass, and (D) a number average molecular weight of 1,500 to 20,000 Ethylene glycol -2 to 8 mass%, and the mass ratio of the content of the component (A) to the acid content of the component (B) ((B)/(A)) is 0.05 to 1.5, the component (C) and the component The total content of (D) is 10 to 30% by mass, and the viscosity of the liquid detergent at 25 ° C is 1 to 20 mPa. s.

However, the detergent described in Patent Document 1 contains a large amount of glycerin, and when it is used, it generates heat and brings a feeling of warmth, so that it has a feeling of heat and skin irritation, and There are also problems specific to aerosols that are subject to disposal or disposal. Further, the detergent disclosed in Patent Document 2 has a texture roughness or elasticity which is improved in foam, but there is a problem in the ease of diffusion of the foam or the soft touch of the skin after washing. Further, in the case of the detergent described in Patent Document 3, the foam is in the form of an emulsifiable emulsion and imparts a moist feeling to the skin. However, due to the type of the polyol used or the combination or content thereof, the foam is used. There is still room for improvement in the degree of emulsification, and the foam is not sufficient for the slidability or push-opening of the skin, and there is also a decrease in the foaming property of the foam from the container, and a decrease in the texture of the foam. . Further, in the case of the detergent of Patent Document 4, there is also a possibility that the flushing time is caused by the ratio of the amount of the N-mercaptoamino acid type anionic surfactant to the amphoteric surfactant. The stickiness is increased, and it is difficult to improve the feeling of use.

As described above, although a detergent which uses N-mercapto acid amino acid and exhibits various properties has been developed, the detergent which is used for discharging from a gas-free foaming container has not yet achieved the following, that is, the texture is fine. It is a creamy foam with good slidability to the skin and easy to push open. It also has excellent spit-out properties. It has less stickiness when washing, and makes the skin softer after washing.

Accordingly, the present invention provides a liquid detergent which is filled in a gas-free foaming container, which has a fine foam texture and a good slidability of the foam to the skin, has no stickiness when washed, and the skin is soft after washing. Brings a good sense of use and also has good spit.

Therefore, the inventors of the present invention have developed an injection containing N-mercaptoamino acid, which also has excellent foam quality, feeling of use, and good discharge property, from the viewpoint of reducing the irritation to the skin. Various studies were carried out without a liquid detergent for a gas foaming container, and it was found that N- was used at a specific content and total amount and at a specific ratio. Mercapto amino acid, amphoteric surfactant, glycerin and polyethylene glycol of a specific number average molecular weight, and adjust the viscosity to a specific range, thereby obtaining a high-performance foam and also a skin strip after washing A liquid detergent which is excellent in use feeling and excellent in spoutability.

According to the present invention, not only the irritation to the skin is lowered, but also the texture is fine and creamy, and the skin is also excellent, and the skin is soft and smooth after washing, and the skin is soft after washing. It has a feeling of use and is excellent in spoutability, and can be easily extruded from a gas-free foaming container.

Hereinafter, the present invention will be described in detail.

The liquid detergent filled in the gas-free foaming container of the present invention contains N-10 mercapto acid or a salt (A) in an amount of 2 to 10% by mass based on the acid. Good foaming and detergency can be achieved by containing the component (A) in a specific amount. From the viewpoint of foaming property and the like, the mercapto group of the N-decylamino acid or the salt thereof (A) is preferably a compound having a linear or branched fatty acid having a saturated or unsaturated carbon number of 8 to 18. More preferably, it is a saturated or unsaturated fatty acid having a linear or branched chain having 8 to 16 carbon atoms, and more preferably a saturated or unsaturated fatty acid having a linear or branched chain having 8 to 14 carbon atoms. . Examples of such a fatty acid include caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, and oleic acid. Among these fatty acids, lauric acid, myristic acid, palmitic acid, oleic acid, and more preferably lauric acid are preferable in terms of foam quality or storage stability. Further, the thiol group of the N-mercaptoamino acid may be a mixed fatty acid derived from the above fatty acid, and is obtained, for example, from coconut oil, palm kernel oil or the like. Among them, those obtained by using coconut oil fatty acid or palm kernel fatty acid as a raw material are preferable, and those obtained by using coconut oil fatty acid as a raw material are more preferable.

N-decylamino acid or its salt from the viewpoint of the high-quality foam of the foam which is excellent in the slidability of the skin, and the feeling of softness and moistness of the skin after washing. The amino acid moiety of (A) is preferably selected from the group consisting of glycine acid, a neutral amino acid of alanine, and an acidic amino acid selected from the group consisting of glutamic acid and aspartic acid, more preferably an acidic amine. The base acid is further preferably glutamic acid. Further, the amino acid moiety may be either D, L or a mixture of D and L, preferably L.

The above N-methylamino acid or a salt thereof (A) may be used alone or in combination of two or more. Among them, N-Lauryl glutamic acid is preferred from the viewpoints of a high-quality foam which is easy to push open by the foam to the skin, and a good feeling of softness and moistness after washing. N-myristyl glutamic acid, N-cocoyl glutamic acid, N-palmit fatty acid glutamic acid, N-lauroyl aspartic acid, N-cocoyl glycine, N- Cocopropyl alanine or a salt thereof, more preferably N-lauric acid glutamic acid, N-myristyl glutamic acid, N-cocoyl glutamic acid, N-palmit fatty acid glutamine Acid, N-lauric acid aspartic acid, N-cocoyl glycyl acid or the like, more preferably N-lauric acid glutamic acid, N-myristyl glutamic acid, N - cocoyl glutamic acid, N-lauric acid aspartic acid or a salt thereof, and more preferably N-cocoyl glutamic acid, N-lauroyl aspartic acid or such The salt is further preferably N-cocoyl glutamic acid or a salt thereof.

Examples of the salt of the above-mentioned N-mercaptoamino acid or a salt thereof (A) include an alkali metal salt such as sodium or potassium, and an alkaline earth metal salt such as calcium or magnesium, from the viewpoint of ensuring foaming property or foam quality. Aluminum, zinc and other inorganic salts; ammonium salts; monoethanolamine, diethanolamine, triethanolamine, AMP (2-amino-2-methyl-1-propanol), 2-amino-2-hydroxymethyl- An organic amine salt such as 1,3-propanediol; or other organic salt such as arginine, lysine, histidine or ornithine. The salt of N-decylamino acid or a salt thereof (A) is preferably an alkali metal salt, a triethanolamine salt or a arginine salt, more preferably sodium, in terms of irritation to the skin or ease of availability. The salt, the potassium salt, the triethanolamine salt, the arginine salt, and more preferably the sodium salt, the potassium salt, and more preferably the sodium salt.

Further, in the case of formulating N-mercaptoamino acid, it is used by neutralizing with a base. Examples of the base to be neutralized include sodium hydroxide, potassium hydroxide, monoethanolamine, triethanolamine, diethanolamine, ammonia, AMP (2-amino-2-methyl-1-propanol), and 2-amine. Base-2-hydroxymethyl-1,3-propanediol, lysine, arginine, histidine, sodium acetate, potassium acetate, etc., in terms of foaming or foaming, skin irritation or ease of access In other words, it is preferably selected from the group consisting of sodium hydroxide, potassium salt, arginine salt, and triethanolamine salt, and is selected from the group consisting of sodium hydroxide, potassium hydroxide, arginine, and triethanolamine, and more preferably selected from sodium hydroxide. One or two bases of potassium hydroxide. Further, the pH of the liquid detergent may be a final desired value, and if necessary, sodium hydroxide, potassium hydroxide, triethanolamine, ammonia, lysine, arginine, and histidine may be additionally used. Such as the usual various bases. Further, in any case, in order to adjust the pH of the liquid detergent, it is also possible to additionally use hydrochloric acid, sulfuric acid, phosphoric acid, acetic acid, citric acid, malic acid, lactic acid, fumaric acid, succinic acid or the like. Various acids.

The N-mercaptoamino acid or its salt (A) is acid-based in the present invention from the viewpoint of obtaining excellent foaming property and high foam quality, and a good feeling of use after washing. The liquid detergent to be charged in the gas-free foaming container is 2% by mass or more and 10% by mass or less, more preferably 3% by mass or more, still more preferably 8% by mass or less, and still more preferably 6% by mass or less. The content of the N-mercaptoamino acid or the salt thereof (A) in terms of acid is 2 to 10% by mass, more preferably 2 to 8% by mass, still more preferably 3 to 6% by mass.

The liquid detergent filled in the gas-free foaming container of the present invention contains the amphoteric surfactant (B) in an amount of 0.2% by mass or more and 3% by mass or less. The component (B) is contained in a specific amount, and together with the specific amount of glycerin (C) and a polyethylene glycol (D) having a specific number average molecular weight, whereby a foam having a creamy texture and a fine texture can be obtained. And it has a good quality foam with good slidability and good pushability, and it is sticky when it is rinsed. Suppresses and softens the touch of the skin after washing. The amphoteric surfactant (B) is preferably selected from the group consisting of alkyl sulfobetaine, alkyl hydroxy sulfobetaine, alkyl carboxy betaine, alkyl decyl hydroxy sulfobetaine, alkyl hydrazine. One or more of aminoamine type betaines and alkyl imidazoline type betaines. Among them, from the viewpoint of achieving a high-quality foam having a good push-opening property and a good feeling of use for obtaining a soft skin after washing, it is more preferably selected from an alkyl group having an alkyl group having 8 to 14 carbon atoms. One or two or more kinds of amidinopropyl betaine and an alkylhydroxysultaine are further preferably an alkylhydroxysultaine, and more preferably a lauryl hydroxysultaine.

An amphoteric surfactant can be obtained from the viewpoint of obtaining a cream having a creamy texture and a fine texture, and having a good slidability to the skin and a good quality of the foam, and achieving a foaming feeling during the rinsing to suppress the foam. The content of B) is 0.2% by mass or more and 3% by mass or less, preferably 0.4% by mass or more, and more preferably 1% by mass or more, based on the liquid detergent to be charged into the gas-free foaming container of the present invention. The content of the amphoteric surfactant (B) is preferably 2.5% by mass or less, more preferably 2.4% by mass or less, and still more preferably 2% by mass, from the viewpoint of improving the foaming property and further suppressing the stickiness after washing. the following. The content of the amphoteric surfactant (B) is in the liquid washing of the gas-free foaming container of the present invention from the viewpoint of taking into consideration the foam quality, the feeling of good after washing, and the feeling of stickiness during washing. The amount of the detergent is preferably from 0.4 to 2.5% by mass, more preferably from 1 to 2.4% by mass, still more preferably from 1 to 2% by mass.

In the liquid detergent filled with the gas-free foaming container of the present invention, it has excellent foaming property, foaming property with fine texture and fine texture, and good foam sliding property and high pushability. The content of the above-mentioned component (A) in terms of acid content and component (B) from the viewpoint of effectively suppressing the stickiness during rinsing and also obtaining a good feeling of use in which the skin is soft after washing. Mass ratio ((B)/(A)) is 0.05 or more and 1.5 In the following, it is preferably 0.18 or more, more preferably 0.15 or more, and still more preferably 0.2 or more. From the viewpoint of improving the foam quality and further suppressing the stick-slip feeling after washing, it is preferably 1.1 or less, more preferably It is 0.5 or less, more preferably 0.4 or less, still more preferably 0.35 or less. Further, the mass ratio of the content of the component (A) to the content of the component (B) ((B)/(A)) is 0.05 to 1.5, preferably 0.08 to 1.1, more preferably 0.15 to 0.5. It is preferably 0.2 to 0.4, and more preferably 0.2 to 0.35.

The liquid detergent filled in the gas-free foaming container of the present invention contains glycerin (C) in an amount of 5 mass% or more and 28 mass% or less. By containing the component (C) in a specific amount together with a specific amount of the component (A), the component (B), and the component (D), a good viscosity can be imparted and the foam durability can be improved, and a creamy foam can be achieved. A foam that has good slidability and a good push-out property, and has a good feeling of use when the skin is soft and moist. Moreover, the discharge property from the gas-free foaming container can be improved.

The content of glycerin (C) is not contained in the present invention in terms of improving the foam durability and imparting excellent foam quality, and ensuring that the skin after washing is soft and has a good moist feeling and good spouting property. The liquid detergent of the foaming container is 5% by mass or more and 28% by mass or less, preferably 10% by mass or more, more preferably 12% by mass or more, and further preferably 25% by mass or less, more preferably 23.5% by mass. %the following. Further, the content of the glycerin (C) is 5 to 28% by mass, preferably 10 to 25% by mass, and more preferably 12 to 23.5% by mass, based on the liquid detergent to be charged into the gas-free foaming container of the present invention.

The liquid detergent filled in the gas-free foaming container of the present invention contains polyethylene having a number average molecular weight of 1,500 to 20,000 measured by a GPC method (Gel Permeation Chromatograph) using polystyrene as a standard. The diol (D) is 2% by mass or more and 8% by mass or less. By containing the polyethylene glycol (D) having a specific number average molecular weight in the above amount, the foam discharged from the gas-free foaming container can be made into a creamy state. A foam having fine texture and shape retention, and good foam slidability and good pushability. Moreover, it is possible to maintain good spitting properties from a gas-free foaming container. The number average molecular weight of the component (D) is preferably 2,000 or more, more preferably 2,500 or more, still more preferably 3,000 or more, and preferably 12,000 or less, from the viewpoint of having the above-mentioned good foam quality and discharge property. More preferably, it is 10,000 or less, further preferably 9,500 or less, and still more preferably 9000 or less. Further, the number average molecular weight of the component (D) is preferably from 2,000 to 12,000, more preferably from 2,500 to 10,000, still more preferably from 2,500 to 9,500, and still more preferably from 3,000 to 9000.

The foam which is spouted from the gas-free foaming container is an excellent foam having a creamy texture and a shape retaining property, and maintains good foam sliding property, and has a better push-opening quality and a good feeling of use after washing. The content of the polyethylene glycol (D) is 2% by mass or more and 8% by mass or less in the liquid detergent filled in the gas-free foaming container of the present invention, from the viewpoint of ensuring good discharge property. It is preferably 2.5% by mass or more, and preferably 5% by mass or less, more preferably 4.5% by mass or less. Further, the content of the polyethylene glycol (D) is 2 to 8% by mass, preferably 2 to 5% by mass, more preferably 2.5 to 4.5, in the liquid detergent of the gas-free foaming container of the present invention. quality%.

In the liquid detergent filled with the gas-free foaming container of the present invention, the foam which is discharged from the gas-free foaming container is a fine foam having a creamy texture and a shape retaining property, and prevents the foam from solidifying and imparting From the viewpoint of excellent foam quality with good foam opening property, the viewpoint of obtaining a soft touch of the skin after washing, and preventing the pump from being excessively high to ensure good discharge property, the above component (C) The total amount of the component (D) is 10% by mass or more and 30% by mass or less, preferably 12% by mass or more, and more preferably 15% by mass in the liquid detergent filled in the gas-free foaming container of the present invention. % or more, and preferably 27% by mass or less, more preferably 26% by mass or less. Further, the total content of the component (C) and the component (D) is washed in the liquid filled with the gas-free foaming container of the present invention. The amount of the agent is 10 to 30% by mass, preferably 12 to 27% by mass, more preferably 15 to 26% by mass.

The liquid detergent to be charged into the gas-free foaming container of the present invention preferably further contains a glyceryl ether (E) having a linear or branched alkyl group having 8 to 12 carbon atoms. By containing the specific glycerin ether (E), foaming property and foam durability can be further improved. In view of improving foaming property and foam durability, the component (E) is more preferably a linear or branched alkyl group having 8 to 10 carbon atoms, and further preferably has a carbon number of 8 The alkyl group of the chain or branch, and more preferably the alkyl group having a branch.

The content of the glyceryl ether (E) is preferably 0.1% by mass or more and 1.5% by mass or less, more preferably 0.2% by mass or more, and still more preferably from the viewpoint of more effectively improving the foaming property and the foaming durability. 0.3% by mass or more, and more preferably 1% by mass or less, further preferably 0.7% by mass or less.

The liquid detergent to be charged into the gas-free foaming container of the present invention is preferably a liquid form in which the above components are dissolved or dispersed by using water as a medium. As water, distilled water or ion-exchanged water can be used in terms of not affecting storage stability. The water content, in addition to the purified water such as ion-exchanged water, is also included in the content of the water contained in the formulated ingredients, the spouting or foaming property from the container, the retention of good foam quality, and the storage stability. In the liquid detergent of the present invention, it is preferably 40% by mass or more, more preferably 45% by mass or more, further preferably 55% by mass or more, and more preferably 85% by mass or less, more preferably 80% by mass or less, more preferably 75% by mass or less, and the remainder of the other components contained as needed in addition to the above components (A) to (D).

The pH of the liquid detergent of the present invention is preferably in the range of pH 4.5 to 9.5, more preferably pH 4.5 to the viewpoint of good foaming property of the component (A) and reduction of irritation to the skin. 8.5. When the component (A) is an N-mercapto acid amino acid or a salt thereof, it is preferably in the range of pH 4.5 to 8.0, more preferably pH 5.0 to 7.5, and further preferably pH 5.5. ~6.5. In the pH value, 100 ml of the liquid detergent was filled in a beaker, and the temperature was adjusted to 25 ° C in a thermostat at 25 ° C, and then the pH measurement electrode was immersed for 3 minutes to measure.

The liquid detergent of the present invention may contain an anionic property other than the component (A) such as an alkyl sulfate or a salt thereof, a polyoxyethylene alkyl ether sulfate or a salt thereof, or a fatty acid salt, without departing from the effects of the present invention. Surfactant. The content of the fatty acid salt in the liquid detergent of the present invention is preferably 0.5% by mass or less, more preferably from the viewpoint of good spitting, inhibition of skin irritation, and soft skin feel after washing. 0.1% by mass or less, more preferably 0.01% by mass or less, and it is preferably not contained in the case where it is inevitably mixed. The liquid detergent of the present invention is selected from the group consisting of alkyl sulfates or salts thereof, and polyoxyethylene alkyl ether sulfates or salts thereof in terms of inhibition of skin irritation and foaming. The content of the anionic surfactant other than (A) is preferably less than the total content of the component (A) of the present invention, preferably 7% by mass or less, more preferably 4% by mass or less, still more preferably 1% by mass. % or less is preferably not contained unless it is inevitably mixed. Further, in the liquid detergent of the present invention, the content of the anionic surfactant selected from the group consisting of alkyl sulfate or a salt thereof, and polyoxyethylene alkyl ether sulfate or a salt thereof is set to 0.3% by mass. Hereinafter, or in addition to 0.1% by mass or less, good foaming properties and foam properties can be obtained.

Further, the liquid detergent of the present invention may contain, in addition to the above components, a component used in a usual liquid detergent, such as 1,3-butylene glycol or propylene glycol, insofar as the effects of the present invention are not impaired. (C) and alcohols or polyols other than the component (D). Further, a nonionic surfactant such as an alkyl polyglycoside, a polyoxyethylene alkyl ether or a polyoxyalkylene sorbitan fatty acid ester may be contained in a range which does not impair the effects of the present invention; a coloring agent such as a dye; Plant extracts; preservatives; chelating agents; vitamins; glycyrrhizic acid, glycyrrhizin and derivatives thereof, allantoin and other anti-inflammatory agents; Line absorbent; antioxidants, etc.

The liquid detergent of the present invention may contain an anionic, nonionic or cationic polymeric tackifier in the range which does not impair the effects of the present invention. The content of the polymer tackifier is preferably less than 0.2% by mass, more preferably less than 0.1% by mass, and still more preferably 0.01% by mass in the liquid detergent of the present invention. % or less, and preferably substantially free of a polymeric tackifier. The polymer-based thickener may be one or more selected from the group consisting of carrageenan, sage gum, gelatin, guar gum, cellulose gum, bentonite, cationized guar gum, and cationized cellulose.

The liquid detergent of the present invention filled with a gas-free foaming container is at 25 ° C from the viewpoint of ensuring the good texture and fineness of the spouted foam and the shape retaining property of the foam, and also ensuring good spoutability. The viscosity is 1~20mPa. s, preferably 2~15mPa. s, more preferably 3~13mPa. s, and further preferably 5 to 11 mPa. s. Further, the viscosity can be obtained by using a Brookfield viscometer (Tokyo Industry, TVB-10) at 25 ° C, a rotor of No. 1 and rotating at a number of revolutions of 60 r / min, and measuring the rotation start. Viscosity after 60 seconds.

The liquid detergent filled in the gas-free foaming container of the present invention can be produced according to a conventional method using the above respective components. Further, the liquid detergent is preferably used for skin cleansing, and more preferably used as hand lotion, facial cleanser or shower gel. The liquid detergent composition of the present invention is used to wash the skin by a usual skin cleansing method. As a washing method, there is a method of washing by hand, a sponge made of a chemical fiber such as cotton or nylon, a towel, a bristle brush, or the like, thereby reducing the irritation to the skin and effectively utilizing the present invention. From the viewpoint of the foam performance and the feeling of use of the invention, it is preferred to use a method of washing by hand directly in the hands. Moreover, the liquid detergent incorporating the gas-free foaming container of the present invention has low irritation and good foaming and foaming properties. Good, you can get the soft touch of the skin after washing, so it is suitable for the skin of infants and young children selected from sensitive skin, dry skin, mixed skin and thin cuticle. It is more suitable for sensitive skin and dry. Wash skin and skin in infants and young children. Here, the term "sensitive skin" as used in the present invention refers to a skin in which the nerve fibers extend into the epidermis and directly below the stratum corneum, and the perceptual allergy state of the sensory stimulation is easily perceived. Specifically, it refers to mild external stimuli (temperature, humidity, dust, allergens, etc.) that are susceptible to perceptual nervousness, and feels irritating, such as burning, stinging, itching, etc. due to the use of cosmetics or external stimuli. Skin. In addition, infants refer to infants and young children, infants refer to children from 0 days to less than one year old, and children refer to children from 1 year old to pre-school, and are more suitable for children under 5 years old in the present invention.

The liquid detergent of the present invention which is incorporated in the gas-free foaming container is obtained by filling the above liquid detergent into a gas-free foaming container of a type which is discharged by a foam. The N-mercaptoamino acid of the component (A) or a salt thereof has a slightly deficient property such as a creamy emulsion level as compared with the fatty acid soap, but the liquid is filled in the gas-free foaming container. When the detergent is discharged from the container, it is excellent in spouting property, and the foam is fine and creamy, and the foam has good slidability to the skin, and the foam is excellent in pushing property, and is not washed out like fatty acid soap. After the discomfort, the skin after washing can have a soft feeling of use. The non-gas type foam discharge container may be any one that can be spouted by mixing with air, and for example, a pump bubbling container that is discharged by pressing a pump head or by squeezing a container The squeezing foaming container which is spouted by the main body part is specifically, for example, a yoke container manufactured by Yoshino Industrial Co., Ltd., and a foaming container manufactured by Daiwa can. Further, for example, a foaming container described in JP-A-H07-315463, JP-A-H08-230961, and JP-A-2005-193972 can be used. Among them, from the viewpoint of the convenience in the environment in which the liquid detergent is used, it is preferred that the pumping container is spouted by pressing the pump head to further improve the foam quality. In order to have a porous membrane filter on the discharge channel. The porous membrane filter is preferably a filter of 100 to 400 mesh, more preferably a filter of 200 to 400 mesh, from the viewpoint of obtaining a finer texture and finer foam. The filter sheet having a mesh size of 200 to 305 is preferably one or three sheets of the porous filter sheet disposed on the discharge flow path, and more preferably two sheets. Further, in the mixing ratio of the liquid detergent to the air in the pumping container, the density of the discharged foam (the quality of the liquid detergent / from the viewpoint of obtaining a good foam amount and easy to clean the foam of the skin) The volume of air is preferably from 0.03 to 0.14 g/cm ³ , more preferably from 0.05 to 0.11 g/cm ³ .

With regard to the above-described embodiment of the present invention, the following liquid detergent filled in a gas-free foaming container is further disclosed.

[1] A liquid detergent filled in a gas-free foaming container, which comprises the following components (A), (B), (C) and (D): (A) N-decylamino acid or The salt is 2% by mass or more and 10% by mass or less based on the acid, (B) the amphoteric surfactant is 0.2% by mass or more and 3% by mass or less, (C) glycerin is 5% by mass or more and 28% by mass or less, and (D) The mass average molecular weight is 25% by mass or more and 8% by mass or less of the polyethylene glycol of 1,500 to 20,000, and the mass ratio ((B)/(A)) of the content of the component (A) to the component (B) is 0.05 or more. 1.5 or less, the total content of the component (C) and the component (D) is 10% by mass or more and 30% by mass or less, and the viscosity of the liquid detergent at 25 ° C is 1 to 20 mPa. s.

[2] The liquid detergent containing the gas-free foaming container according to the above [1], wherein the content of the component (A) is 2% by mass or more and 10% by mass or less, preferably 3% by mass or more, and It is preferably 8% by mass or less, more preferably 6% by mass or less.

[3] The liquid detergent according to the above [1] or [2], which is filled with a gas-free foaming container, wherein the component (A) preferably has a straight or saturated unsaturated carbon number of 8 to 18 The mercapto group of the chain or branched fatty acid is more preferably a mercapto group having a linear or branched fatty acid having a saturated or unsaturated carbon number of 8 to 16, and more preferably having a carbon number of 8 to 12. A saturated or unsaturated sulfhydryl group having a linear or branched fatty acid.

[4] The liquid detergent filled in the gas-free foaming container according to any one of the above [1] to [3] wherein the component (A) is selected from the group consisting of N-lauric acid glutamic acid, N- Myristyl glutamic acid, N-cocoyl glutamic acid, N-palmit fatty acid glutamic acid, N-lauroylaspartic acid, N-cocoylglycine, N-coco One or more of mercaptoalanine and the salts thereof are preferably selected from the group consisting of N-cocoyl glutamic acid, N-mylainyl aspartic acid, and one of the salts thereof. Kind or more than two.

[5] The liquid detergent filled in the gas-free foaming container according to any one of the above [1] to [4] wherein the component (A) is N-decyl acid amino acid or a salt thereof.

[6] The liquid detergent filled in the gas-free foaming container according to any one of the above [1] to [5] wherein the content of the component (B) is 0.2% by mass or more and 3% by mass or less. It is preferably 0.4% by mass or more, more preferably 1% by mass or more, and is preferably 2.5% by mass or less, more preferably 2.4% by mass or less, still more preferably 2% by mass or less.

[7] The liquid detergent of the gas-free foaming container according to any one of the above [1] to [6] wherein the component (B) is preferably selected from the group consisting of alkyl sulfobetaines and alkyl groups. Hydroxysulfobetaine, alkylcarboxybetaine, alkylguanidino hydroxysulfobetaine, alkylguanamine amine beet One or more of a base and an alkyl imidazoline type betaine, more preferably one selected from the group consisting of alkyl sulfobetaine or alkyl hydroxy sulfobetaine having an alkyl group having 8 to 14 carbon atoms The species or two or more kinds are further preferably lauryl hydroxysultaine.

[8] The liquid detergent filled in the gas-free foaming container according to any one of the above [1] to [7], wherein the mass ratio of the content of the component (A) to the component (B) ((B) / (A)) is 0.05 or more and 1.5 or less, preferably 0.08 or more, more preferably 0.15 or more, further preferably 0.2 or more, and more preferably 1.1 or less, more preferably 0.5 or less, still more preferably 0.4 or less. More preferably, it is 0.35 or less.

[9] The liquid detergent filled in the gas-free foaming container according to any one of the above [1] to [8], wherein the content of the component (C) is 5% by mass or more and 28% by mass or less. It is preferably 10% by mass or more, more preferably 12% by mass or more, and is preferably 25% by mass or less, and more preferably 23.5% by mass or less.

[10] The liquid detergent filled in the gas-free foaming container according to any one of the above [1] to [9] wherein the content of the component (D) is 2% by mass or more and 8% by mass or less. It is preferably 2.5% by mass or more, and preferably 5% by mass or less, more preferably 4.5% by mass or less.

[11] The liquid detergent of the gas-free foaming container according to any one of the above [1] to [10] wherein the component (D) has a number average molecular weight of 1,500 to 20,000, preferably 2,000. 12000, more preferably 2500~10000, further preferably 2500~9500, and even more preferably 3000~9000.

[12] The liquid detergent filled in the gas-free foaming container according to any one of the above [1] to [11], wherein the total content of the component (C) and the component (D) is 10% by mass or more. 30% by mass or less, preferably 12% by mass or more, more preferably 15% by mass or more, and still more preferably 27% by mass or less, and still more preferably 26% by mass or less.

[13] The liquid detergent charged in the gas-free foaming container according to any one of the above [1] to [12] further comprising (E) a linear or branched alkane having a carbon number of 8 to 12. The glyceryl ether of the base is 0.1% by mass or more and 1.5% by mass or less.

[14] The liquid detergent containing the gas-free foaming container according to the above [13], wherein the content of the component (E) is 0.1% by mass or more and 1.5% by mass or less, preferably 0.2% by mass or more, more preferably It is preferably 0.3% by mass or more, and preferably 1% by mass or less, more preferably 0.7% by mass or less.

[15] The liquid detergent filled in the gas-free foaming container according to any one of the above [1] to [14] wherein the water content is 40% by mass or more and 85% by mass or less, preferably 45. The mass% or more is more preferably 55% by mass or more, and is preferably 80% by mass or less, and more preferably 75% by mass or less.

[16] The liquid detergent filled in a gas-free foaming container according to any one of the above [1] to [14], which has a viscosity of 1 to 20 mPa at 25 ° C. s, preferably 2~15mPa. s, more preferably 3~13mPa. s, and further preferably 5 to 11 mPa. s.

[17] The liquid detergent filled in the gas-free foaming container according to any one of the above [1] to [16], which has a pH of 4.5 to 9.5, preferably a pH of 4.5 to 8.5.

[18] The liquid detergent of the gas-free foaming container according to any one of the above [1] to [16] wherein the component (A) is an N-mercapto acid amino acid or a salt thereof, and The pH is 4.5 to 8.0, more preferably 5.0 to 7.5, and still more preferably 5.5 to 6.5.

[19] Use of a liquid detergent filled in a gas-free foaming container according to any one of [1] to [18] above, which is for washing the skin.

[20] A liquid filled in a gas-free foaming container according to any one of [1] to [18] above The use of body detergents for the manufacture of skin cleansers.

[21] The use of a liquid detergent filled in a gas-free foaming container according to any one of the above [1] to [18], which is used for washing selected from sensitive skin, dry skin, mixed skin, Oily skin and skin in infant skin.

[22] The use of a liquid detergent filled in a gas-free foaming container according to any one of the above [1] to [18], which is used for directly washing the skin by hand in the hands.

[Examples]

Hereinafter, the present invention will be specifically described based on examples. In addition, as long as it does not show especially in a table, the content of each component shows the mass %.

[Examples 1 to 21, Comparative Examples 1 to 10]

According to the compositions shown in Tables 1 to 3, each liquid detergent was produced by a usual method, and the viscosity and pH were measured according to the methods described below, and each evaluation was performed. The results are shown in Tables 1 to 3.

Further, the raw materials of the respective liquid detergents are as follows.

‧Coco glutamate glutamate: trade name "Amisoft CS-11 (F), molecular weight 359", Ajinomoto Co., Ltd.

‧Lauryl hydroxy sulfobetaine solution (30%): trade name "Amphitol 20HD", Kao Corporation

‧Laurylpropyl propyl betaine (30%): trade name "Amphitol 20AB", Kao Corporation

‧Glycerin (100%): trade name "Dense glycerin", Kao Corporation

‧Polyethylene glycol 10000: trade name "PEG-10000", number average molecular weight = 10000, Sanyo Chemical Industry Co., Ltd.

‧Polyethylene glycol 6000: trade name "PEG # 6000", number average molecular weight = 8600, Nippon Oil Co., Ltd.

‧Polyethylene glycol 4000: trade name "PEG-4000S", number average molecular weight = 3400, Sanyo Chemical Industry Co., Ltd.

‧ PEG 600: trade name "PEG-600 (-G)", number average molecular weight = 600, Sanyo Chemical Industry Co., Ltd.

‧2-ethylhexyl glyceryl ether: Kao Corporation

‧Propanediol: Asahi Glass Co., Ltd.

Determination of Viscosity

The measurement was carried out at 25 ° C using a Brookfield viscometer (Dongji Industry, TVB-10). In the rotor system, No. 1 was used, and the rotation was performed at a number of revolutions of 60 r/min, and the viscosity after 60 seconds from the start of the rotation was determined, and the viscosity of the liquid detergent was recorded.

"Determination of pH"

100 ml of the obtained liquid detergent was placed in a beaker and adjusted to 25 ° C in a 25 ° C thermostatic chamber. The electrode for pH measurement was immersed in a sample adjusted to a constant temperature for 3 minutes, and the pH was measured.

Spitness

The obtained liquid detergent is filled in a pump bubbling container manufactured by Yoshino Industrial Co., Ltd., which is spouted by pressing the pump head (the size of the mesh membrane of the porous membrane filter provided on the discharge flow path is one 200 mesh hole and In one piece of 305 meshes, the amount of pressing was twice discharged at room temperature of 25 ° C (about 1 g of discharge per one time, and the amount of air was about 13 cm ³ ), and the second press was evaluated by the following five grades. The state of the bubble spit out.

A: There is no mixing of large bubbles, and it seems that the size of the foam is uniform, the foam has shape retention and the texture is fine.

B: There are a few large bubbles mixed in, but it seems that the size of the foam is roughly uniform, the foam is conformal and the texture is fine.

C: There is a large bubble, and the size of the foam is not uniform, but the foam has shape retention.

D: There are many large bubbles mixed in, the size of the foam is not uniform, the shape retention of the foam is low, and the foam texture is rough.

As shown in Tables 1 to 3, Comparative Example 3 in which the content of the component (D) is 8% by mass or more, Comparative Examples 4 and 5 in which the total content of the component (C) and the component (D) is 30% by mass or more The spit foam has a large bubble mixed in and the foam looks uneven, the foam texture is very rough and the foam has no conformality, so the degree of creamyness of the foam described below, the pushability of the foam, and the washing are described. After the end of the skin, the feeling of touch and the viscous feeling during washing, the evaluation of the spitability was evaluated as a liquid detergent of A~C.

"The degree of creamy foam, the degree of the push of the foam"

For the liquid detergent with the discharge property of A to C, the evaluation of the degree of the creaminess of the foam and the degree of the pushability of the foam were evaluated by the following five methods using the following professional methods. . The average scores of the evaluations are shown in Tables 1 to 3.

The method of use is in a room at room temperature of 25 ° C and a relative humidity of 40%, and the liquid detergent of the examples and the comparative examples is filled in a pump bubbling container manufactured by Yoshino Industrial Co., Ltd., which is spouted by pressing the pump head. In the size of the mesh membrane of the porous membrane filter on the discharge channel, one piece of 200 mesh holes and one piece of 305 mesh holes, two presses (about 1 ml of discharge per press, about 13 cm ³ ) are discharged. On the dry palm, use the spit foam and rub the palms with both hands to clean the palms for about 7 seconds. Thereafter, it was sufficiently rinsed with tap water (25 ° C) and wiped with a dry towel.

(1) Evaluation criteria for the degree of creamy foam: the foam has a creamy feel

5: I feel strongly

4: I feel

3: Slightly felt

2: I don't feel much

1: not felt

(2) Evaluation criteria for the goodness of the push-out of the foam: the skin of the foam is good to be slid and the foam is better for the skin.

5: I feel strongly

4: I feel

3: Slightly felt

2: I don't feel much

1: not felt

"The presence or absence of stickiness during rinsing, the softness of the skin after washing"

Further, five professional inspectors used the following methods to evaluate the softness of the skin during washing and the softness of the skin after washing by using the following methods. The average scores of the evaluations are shown in Tables 1 to 3.

The method of use is in a room at room temperature of 25 ° C and a relative humidity of 40%, and the liquid detergent of the examples and the comparative examples is filled in a pump bubbling container manufactured by Yoshino Industrial Co., Ltd., which is spouted by pressing the pump head. In the size of the mesh membrane of the porous membrane filter on the discharge channel, one piece of 200 mesh holes and one piece of 305 mesh holes, two presses (about 1 ml of discharge per press, about 13 cm ³ ) are discharged. On the palm of your hand, use a spit of foam to cleanse the face. Thereafter, it was sufficiently rinsed with tap water (25 ° C) and wiped with a dry towel.

(3) Evaluation criteria for the softness of the skin after washing: the skin after washing has a soft feeling

5: I feel strongly

4: I feel

3: Slightly felt

2: I don't feel much

1: not felt

(4) Evaluation criteria for the presence or absence of stickiness during rinsing: the skin does not stick when rinsing

5: I feel strongly

4: I feel

3: Slightly felt

2: I don't feel much

1: not felt

As shown in Tables 1 to 3, the liquid detergent of the example is higher in texture and finer in the form of emulsifiable oil than the liquid detergent of the comparative example, and the foam has good pushability and is sticky at the time of washing. Slip feels suppressed and a good sense of use after washing can be achieved in a balanced manner.

Claims (7)

A liquid detergent filled in a gas-free foaming container, which comprises the following components (A), (B), (C) and (D): (A) N-decylamino acid or a salt thereof The acidity is 2% by mass or more and 10% by mass or less, (B) the amphoteric surfactant is 0.2% by mass or more and 3% by mass or less, (C) glycerin is -5 mass% or more and 28% by mass or less, and (D) The mass average molecular weight is 1,500 to 20,000 PEG-2 mass% or more and 8% by mass or less, and the mass ratio of the component (A) to the component (B) ((B)/(A)) is 0.05 or more. Further, the content of the component (C) and the component (D) is preferably 10% by mass or more and 30% by mass or less, and the viscosity of the liquid detergent at 25 ° C is 1 to 20 mPa. s. A liquid detergent filled in a gas-free foaming container according to the first aspect of the invention, wherein the component (A) is an N-mercapto acid amino acid or a salt thereof. A liquid detergent filled with a gas-free foaming container according to claim 1 or 2, wherein the sulfhydryl group of the component (A) is selected from the group consisting of lauric acid, myristic acid, coconut oil fatty acid and palm kernel fatty acid. One or more fatty acids. A liquid detergent filled in a gas-free foaming container according to claim 1 or 2, wherein the amino acid moiety of the component (A) is one selected from the group consisting of glutamic acid and aspartic acid or 2 kinds. A liquid detergent filled in a gas-free foaming container according to the first or second aspect of the invention, wherein the component (B) is a alkyl guanylpropyl beet selected from the group consisting of an alkyl group having 8 to 14 carbon atoms. One or more of a base, an alkylsulfobetaine, and an alkylhydroxysultaine. A liquid detergent filled in a gas-free foaming container according to the second aspect of the invention, wherein the component (B) is lauryl hydroxysultaine. A liquid detergent filled in a gas-free foaming container according to claim 1 or 2, which further contains (E) 0.1% by mass of a glyceryl ether having a linear or branched alkyl group having 8 to 12 carbon atoms. The above is 1.5% by mass or less.