JP2010047541A - Foamable cleansing oil and skin care method using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a detergent that is useful for cleansing and face washing by one agent, includes an oil as a base, has good makeup-removing effect and excellent foamability. <P>SOLUTION: The detergent composition in the form of a solution includes 50-90 mass% of an oily raw material composed of one or more oils liquid at a normal temperature and 10-50 mass% of a surfactant composed of one or more nonionic surfactants. The oily component contains a nonpolar oil and/or a polyhydric alcohol fatty acid ester. One or more of the anionic surfactants are selected from an alkyl ether carboxylic acid or a salt thereof. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

Field of use

  The present invention relates to a cleaning composition. The detergent composition of the present invention is useful as a cosmetic, particularly as a face wash.

  Skin care is usually done by a multi-step procedure that includes cleansing, facial cleansing, use of lotion, use of milky lotion, and use of cosmetic liquids. Use cosmetics with different dosage forms.

  After the makeup cosmetic is floated and / or removed with a cleansing material, washing with a foaming cleansing material is sometimes referred to as double face washing. Makeup cosmetics usually contain a lot of oily ingredients, and there are also cosmetics that have the advantage of being so-called waterproof type and difficult to remove, and may not be completely removed with just a regular facial cleanser. . The use of the cleansing agent has the advantage that the makeup stains can be lifted and removed, so there is no need to rub the skin excessively during makeup removal, and there is less irritation to the skin.

  From such a viewpoint, double face washing should be recommended, but on the other hand, it is complicated to use two agents, a cleansing material and a face wash. Therefore, several dosage forms for enabling cleansing and face washing with one agent have been proposed. The method to make one agent is based on the formulation of cleansing material, based on the formulation based on oil (liquid oil at normal temperature), and on the basis of the formulation of cleaning material, based on water based components It can be roughly divided into the method of doing.

  Patent Document 1 discloses that an average degree of polymerization of ethylene oxide of ethylene oxide is 6 to 16 as a cleaning agent based on a soap component that can make up makeup and foam by adding water. A skin cleanser characterized by containing a polyoxyethylene diisostearate and an alkali metal salt or triethanolamine salt (amide type surfactant) of a higher fatty acid is disclosed.

For the same purpose, Patent Document 2 has (a) 50 to 90% by mass of a normal temperature liquid oil component and (b) 10 to 30% by mass of an oil-soluble anionic surfactant as a cleaning agent based on oil. An oily skin cleanser characterized in that it contains and can be foamed by adding water is disclosed.
Japanese Patent No. 3375687 JP 2005-239616 A

  The inventors of the present invention have been researching on cleansing agents that are cleansable and foamable based on oil. And when the above-mentioned oily skin cleansing agent was examined, the foaming evaluation test presented in the specification was under conditions different from the actual method of use. In some cases, it was not dissolved in the solution, or precipitation of components was observed. Therefore, the present inventors have various requirements to be required as a one-component cleaning composition based on oil as well as makeup-removing effect and foaming under practical conditions for various formulations. As a result of diligent research on the present invention, the present invention has been completed.

The present invention provides the following:
1) Contains 50 to 90% by mass of an oily component composed of one or more liquid oils at room temperature, and one or more anionic surfactants and 10 to 50% by mass of a surfactant composed of one or more nonionic surfactants. , Cleaning composition.
2) The cleaning composition according to which the oil component contains a nonpolar oil and / or a polyhydric alcohol fatty acid ester, and the nonpolar oil and / or the polyhydric alcohol fatty acid ester is 40% by mass or more.
3) The composition according to 1) or 2), wherein at least one of the anionic surfactants is selected from alkyl ether carboxylic acids or salts thereof.
4) One or more of the nonionic surfactant is selected from the group consisting of fatty acid-N-methyl monoethanolamide, fatty acid diethanolamide, and alkyl glycol hydroxypropyl ether. Composition.
5) The emulsification foaming agent of an oil-based detergent composition containing 1 or more of anionic surfactant and 1 or more of nonionic surfactant.
6) A method for producing a cleaning composition, comprising a step of mixing one or more liquid oils at room temperature, one or more anionic surfactants, and one or more nonionic surfactants.
7) Cleansing the subject with a cleansing effective amount of the composition according to any one of 1) to 4), and treating the cleansed subject with an effective foaming amount of the composition and water. A method for cleaning an object, comprising the steps of mixing and foaming and cleaning.
8) A skin care method including the cleaning method according to 7).

[Oil raw material]
In the cleaning composition of the present invention, an oily raw material is used.
In the present invention, the term “oil-based raw material” includes fats and oils, waxes, hydrocarbons, higher fatty acids, higher alcohols, esters, silicones, polyhydric alcohols, polyhydric alcohol ethers, alkyl glyceryl ethers. .

  In the present invention, the oily raw material contains at least one oil that is liquid at normal temperature (oil that is liquid at normal temperature may be referred to as “oil”). Oil is familiar with makeup stains and has the function of floating makeup stains. If the cleaning composition does not have such a function, the cleansing function (make-up stains such as eye makeup and waterproof formulas) becomes insufficient.

  In the present invention, various oils acceptable as cosmetics can be used. The raw material is not particularly limited, and may be petroleum oil, vegetable oil, or synthetic oil. Only 1 type of oil may be used and 2 or more types may be mixed and used for it. Examples of oils that can be used in the present invention include mineral oil (liquid paraffin), polyhydric alcohol fatty acid ester (for example, tri (caprylic acid / capric acid) glyceryl), squalane, fatty acid ester (isopropyl myristate, cetyl octanoate). ), Vegetable oils (hemp oil, jojoba oil, olive oil, palm oil, palm kernel oil, almond oil, evening primrose oil, wheat germ oil, rosehip oil, etc.).

  In the present invention, both nonpolar oils and polar oils can be used as the oil, but the cleaning composition of the present invention can also be used when mixed with water and foamed for cleaning. Therefore, from the viewpoint of foaming and foam quality, nonpolar oils (for example, mineral oil (liquid paraffin), hydrocarbons) and polyhydric alcohol fatty acid esters (for example, tri (caprylic / capric) glyceryl) are preferable. More preferred are nonpolar oils.

As a particularly preferred example of the oil used in the present invention, a mineral oil (liquid paraffin) which is a nonpolar oil can be mentioned. From the viewpoint of easy solidification and better foaming when mixed with water, the mineral oil Among them, it is preferable to use one having a relatively high viscosity. The viscosity (37.8 ° C.) of such mineral oil is 5.80 mm ² / S or more, preferably 8.75 mm ² / S or more, more preferably 11.7 mm ² / S or more ( In another unit system, it is 45 SUS or more, preferably 55 SUS or more, more preferably 65 SUS or more.) Examples of suitable mineral oils are density (15.0 ° C.) 0.832 to 0.855 g / cm ³ , specific gravity (20/20 ° C.) 0.830 to 0.853, viscosity (37.8 ° C.) Examples thereof include 80 to 15.7 mm ^{2 /} S (45.0 to 80.0 SUS) and a flash point of 140 ° C. or higher. In addition, the measurement of these physical property values is based on a standard method used when expressing the standard value of mineral oil in this field.

  Preferred specific examples of other oils include octyl stearate, PEG-8 glyceryl isostearate, PEG-20 glyceryl triisostearate, PEG-20 glyceryl diisostearate, PEG-20 glyceryl isostearate, eucalyptus oil, straight silicone oil, Cyclic dimethyl silicone (for example, cyclopentasiloxane) can be mentioned.

  In the present invention, the oily raw material is 50 to 90% by mass, preferably 60 to 85% by mass, more preferably 65 to 80% by mass in the composition (the total amount is 100% by mass). The oil component preferably contains a nonpolar oil and / or a polyhydric alcohol fatty acid ester. In this case, the content of the nonpolar oil and / or the polyhydric alcohol fatty acid ester in the entire composition is: In a composition, it is 40 mass% or more, Preferably it is 50 mass% or more, More preferably, it is 55 mass% or more. In addition, when showing the content of a compounding component by this invention except a special case, it is a value (mass%) when the composition whole quantity is 100 mass% as usual in this field | area.

  In the present specification, the term “aliphatic group” may be a linear aliphatic group or an aliphatic group having a branched chain, unless otherwise specified. It may be saturated or unsaturated. In addition, the term “fatty acid” in the present specification refers to an aliphatic-carboxylic acid unless otherwise specified, and includes linear fatty acids and branched fatty acids, and includes saturated fatty acids and unsaturated fatty acids.

[Surfactant]
In the cleaning composition of the present invention, a surfactant is used. In the cleaning composition of the present invention, at least one anionic surfactant and at least one nonionic surfactant are used as the surfactant component. Anionic surfactants alone are not sufficient as a cleaning agent in terms of foaming and foam quality, but by adding nonionic surfactants, when mixed with water, a relatively high viscosity and creamy foam can be obtained. Can do.

  In the present invention, various anionic surfactants acceptable as cosmetic ingredients can be used. The hydrophilic group moiety is, for example, carboxylate, sulfate, sulfonate, or phosphate, and a water-soluble salt (for example, sodium salt, potassium salt, triethanolamine salt) may be used as a counter ion. The lipophilic group part is, for example, an alkyl group or an isoalkyl group, and the structure may have an ester bond or an ether bond. Only 1 type may be used for an anionic surfactant, and 2 or more types may be mixed and used for it.

  From the viewpoint of excellent hard water resistance, little irritation, and biodegradability, preferred examples of the anionic surfactant include polyoxyethylene alkyl ether carboxylic acid represented by the following formula or a salt thereof. it can.

RO (CH ₂ CH ₂ O) _n CH ₂ COOM
In the formula, R represents an aliphatic group having 8 to 18 carbon atoms, preferably a linear aliphatic group having 8 to 14 carbon atoms;
n represents an integer of 2 to 14, preferably 3 to 10;
M represents H, Na, or K, preferably H or Na.

  More specific examples include laureth-6 carboxylic acid and its sodium salt, laureth-7 carboxylic acid and its sodium salt, laureth-11 carboxylic acid and its sodium salt, laureth-13 carboxylic acid and its sodium salt, trideceth 7 carboxylic acids and their sodium salts. Particularly preferred examples are sodium trideceth-4 carboxylate and sodium trideceth-7 carboxylate.

  In the present invention, various nonionic surfactants acceptable as cosmetic ingredients can be used. The hydrophilic group portion is, for example, a polyhydric alcohol or a polyoxyethylene chain, and the lipophilic group portion is, for example, a fatty acid (alkyl group or isoalkyl group) or a higher alcohol. There may be an ester bond or an ether bond in the structure. Only 1 type may be used for a nonionic surfactant, and 2 or more types may be mixed and used for it.

  Less irritating, synergistically with oily raw materials or anionic surfactants, thickens the composition itself or a mixture of the composition with water, can make soap more suitable, and synergistically increase foam From the viewpoint that it can be used, preferred examples of the nonionic surfactant include fatty acid diethanolamide, fatty acid N-methylethanolamide, fatty acid glycol hydroxypropyl ether, and more specific examples include coconut oil fatty acid diethanolamide ( Cocamide DEA), coconut oil fatty acid N-methylethanolamide (cocamide methyl MEA), lauryl glycol hydroxypropyl ether, (lauryl / myristyl) glycol hydroxypropyl ether. Other examples include palm kernel fatty acid diethanolamide (palm kernel fatty acid amide DEA), palm oil fatty acid monoethanolamide (cocamide MEA), lauric acid monoisopropanolamide (lauramide MIPA), polyoxyethylene (5) coconut fatty acid mono Examples include ethanolamide (PEG-6 cocamide), polyoxyethylene (2) lauric acid monoethanolamide (PEG-3 lauramide), polyoxypropylene (1) coconut fatty acid monoisopropanolamide (PPG-2 cocamide).

  In this invention, surfactant component is 10-50 mass% in a composition, Preferably it is 15-40 mass%, More preferably, it is 20-35 mass%. A person skilled in the art can design the ratio of the anionic surfactant to the nonionic surfactant in various ranges. However, from the viewpoint of excellent hard water resistance and biodegradability, the ratio of saponification It is preferable to contain more anionic surfactant than nonionic surfactant from the viewpoint that it is solidified at the time and can be sufficiently foamed in the form of a solid soap in the palm without using a net or the like for foaming.

[Other ingredients]
In addition to the oily raw material and the surfactant component, other components can be added to the cleaning composition of the invention as long as their stability and effectiveness are not significantly impaired. Examples of components that can be added include chelating agents (eg, citric acid or salts thereof, EDTA or salts thereof), solvents (eg, ethanol), humectants (eg, glycerin, propylene glycol), viscosity adjusters, water-insoluble polishing. There are agents, antiseptics, fungicides, fragrances, and coloring agents.

[Property of agent, saponification, phase transition, etc.]
The cleaning composition of the present invention may be in the form of oil or gel, and may be in a state in which other components are dissolved in the oily raw material or in a dispersed state (emulsion or suspension).

  The cleaning composition of the present invention can be used for cleansing as it is. In the present invention, when referring to the cleansing composition, “cleansing effective amount” refers to an amount sufficient to lift and / or remove makeup stains.

  The cleaning composition of the present invention can be mixed with water, foamed and used for cleaning. With regard to the cleaning composition in the present invention, the term “effective amount for foaming” refers to an amount sufficient for foaming when mixed with water.

  The cleaning composition of the present invention that is oily can first be made W / O type by mixing with water, and can be made O / W type by adding water, and further water is added. It can be made to foam. In some cases, the addition of water may cause foaming via phase transition, which is referred to as saponification in the present invention.

During the saponification, the cleaning composition of the present invention may be solidified depending on the formulation. Such an embodiment that can be solidified is a particularly preferred example of the cleaning composition of the present invention.
The cleansing function of the cleaning composition of the present invention is easy to apply (preferably having a suitable viscosity and easy to take in the hand), easy to adapt (smooth and easy to stretch, and quickly adapts to makeup) Good), hypoallergenic (good without irritation), makeup remover (makeup floats well and does not remain on the skin), easy to wash away (washable quickly when rinsed with water) ) And skin condition (there is no residual feeling and it should be washed cleanly). In addition, the facial cleansing function is saponified (it should be familiar with water and easily saponified), foaming / volume (good enough to have foam and a sense of volume), foam quality (very foamy) ), Hypoallergenic (preferably non-stimulated), dirt removal (preferably cleanable), ease of washing (preferably cleanable quickly and thoroughly), and It can be evaluated based on the skin condition (a clean feeling is good without any crispness). For more specific evaluation methods, reference can be made to the Examples section of this specification.

  The cleaning composition of the present invention is used for cleansing, mixed with water, foamed and used for cleaning. That is, the cleaning composition of the present invention is for cleansing and foam cleaning.

The cleaning composition of the present invention can be produced by sequentially dissolving or dispersing each component in oil using a conventional production apparatus.
The cleaning composition of the present invention can be suitably used as a facial cleanser, but can also be used as a cleaning agent for whole body, a cleaning agent for baby, and a cleaning agent for hair and scalp. It is also useful as a pet cleaning agent.

The cleaning composition of the present invention can be used as a cleansing cosmetic or as a soap for cleaning, and cleansing and cleaning can be performed with a single agent.
The cleaning composition of the present invention can reduce the labor of skin care.

  The cleaning composition of the present invention is excellent in the feeling of use.

[Method]
With the formulation shown in the table below, a normal temperature liquid oil and a surfactant were mixed and stirred at room temperature to prepare a uniform cleaning composition.

Evaluation test method:
A professional evaluation panel applied W / O emulsified foundation to the entire face, and then made point makeup using eyeliner and mascara. After drying for about 30 minutes, 5 ml of the test sample was taken and spread over the entire face to familiarize the foundation, and then rinsed off with warm water. Evaluation of the cleansing fee at this time was evaluated according to the following evaluation criteria.

  Further, 5 ml of the test sample was taken, and an appropriate amount of water was added to saponify, and further an appropriate amount of water was added to foam. It was applied to the entire face and then rinsed off with warm water. The evaluation with respect to the face wash at this time was evaluated according to the following evaluation criteria.

    Evaluation criteria:

Stability test:
A stability test was evaluated according to the following criteria by placing 10 ml of a test sample in a screw tube bottle, placing it in a thermostatic oven at each temperature of 0 ° C. and 50 ° C., and observing it for one week.

    Evaluation criteria:

[result]
The results are shown in the table below.

  Good results were obtained in all of Examples 1-5. These formulations were stable with no components deposited at 0 ° C. and 50 ° C. Example 5 is considered to be one of the most preferred embodiments of the present invention from the viewpoint of lower irritation (eye irritation, skin irritation) without impairing the cleaning function and cleansing function of the other examples. It was.

It is the photograph shown about the undiluted | stock solution, the soap, and foaming of one example of the cleaning composition of this invention. It is solid in the photo of soap.

Preferred examples of other oils, octyl stearate, Yu Kari oil, straight silicone oils, cyclic dimethyl silicone (e.g., cyclopentasiloxane) and the like.

Claims (8)

50 to 90% by mass of an oily component composed of one or more liquid oils at room temperature, and 10 to 50% by mass of a surfactant composed of one or more anionic surfactants and one or more nonionic surfactants.
A cleaning composition comprising: The oil component contains nonpolar oil and / or polyhydric alcohol fatty acid ester,
The cleaning composition according to claim 1, comprising 40% by mass or more of the nonpolar oil and / or polyhydric alcohol fatty acid ester.   The composition according to claim 1 or 2, wherein one or more of the anionic surfactants is selected from alkyl ether carboxylic acids or salts thereof.   The composition according to any one of claims 1 to 3, wherein at least one of the nonionic surfactants is selected from the group consisting of fatty acid-N-methyl monoethanolamide, fatty acid diethanolamide, and alkyl glycol hydroxypropyl ether. .   An emulsifying foaming agent for an oily detergent composition, comprising one or more anionic surfactants and one or more nonionic surfactants.   A method for producing a cleaning composition, comprising a step of mixing one or more liquid oils at room temperature, one or more anionic surfactants, and one or more nonionic surfactants. A cleansing effective amount of the composition according to any one of claims 1 to 4 is cleansed, and the cleansed target is mixed with an effective amount of foaming of the composition and water. A method for cleaning a target, the method including a step of foaming and cleaning.   A skin care method comprising the cleaning method according to claim 7.