JP2010077097A - Oil-based liquid cleansing composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a transparent oil-based liquid cleansing composition which can be used under conditions in which hands or a face is wet. <P>SOLUTION: An oil-based liquid cleansing composition containing an oil (A), a dextrin fatty acid ester (B), an 8-10C fatty acid/polyglycerol ester (C), and an anionic surfactant (D). <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an oily liquid cleansing composition.

Oil-based cleansing agents are on the market for the purpose of removing skin stains and makeup cosmetics. This was developed mainly for the purpose of exerting a cleansing effect, and many liquid products have been developed. Conventional oil-based cleansing materials, when used on skin wet with water, have the disadvantage that the cleansing power is remarkably reduced because they become an emulsion or suspension and become cloudy. However, in recent years, oily liquid cleansing compositions that do not emulsify or thicken even when about 10% of water is mixed have been developed and can be used in wet environments such as bathrooms and washstands. It is marketed as a possible product.
The liquid oil-based cleansing composition having the above functions is pre-mixed with water or designed to solubilize a large amount of water. It was. The low viscosity oily liquid cleansing composition is difficult to remove from the hand and hangs down from the fingers, and is difficult to apply to the target part during use (Japanese Patent Application Laid-Open No. 2004-75566). Moreover, since the low-viscosity oil-based liquid cleansing composition does not easily remain on the application part during cleansing, it acts directly on the skin, which leads to irritation to the skin and discomfort during use.
As a technique for thickening an oily liquid cleansing composition, a technique for thickening with (behenic acid / eicosanedioic acid) glyceryl to prevent dripping from the fingers during use is disclosed (Patent Document 2). Japanese Patent No. 3729836). However, there is a problem that the transparency of the preparation is low. The present applicant has also proposed a cleansing composition (Japanese Patent Application No. 2008-88155) that exhibits cleansing power even when the amount of moisture mixed in increases during use.
Furthermore, techniques for thickening oily cosmetics with dextrin fatty acid esters are known (Patent Document 3 Japanese Patent Laid-Open No. 9-124435, Patent Document 4 Japanese Patent Laid-Open No. 2003-104839). (Patent Document 5 Japanese Patent Application Laid-Open No. 2003-111024) is also known, but it is a technique for transparently thickening an oily liquid cleansing composition with a dextrin fatty acid ester that can be used in an environment where hands and face are wet. Is not known.

JP 2004-75566 A Japanese Patent No. 3729836 JP-A-9-124435 JP 2003-104839 A JP 2003-1113024 A

  It is an object of the present invention to provide a transparent oily liquid cleansing composition that can be used in an environment where the hands and face are wet.

The main configuration of the present invention is as follows.
(1) Oily liquid characterized by containing oil (A), dextrin fatty acid ester, (B), fatty acid having 8 to 10 carbon atoms, polyglycerin ester (C) and anionic surfactant (D) Cleansing composition.
(2) The composition for oily liquid cleansing according to (1), wherein the transmittance of light having a wavelength of 750 nm is 75% or more.
(3) (1) or (2), wherein the viscosity is 300 to 1,000 mPa · s when measured with a B-type viscometer (rotor 1, 12 rpm, 30 seconds) at 25 ° C. Oily liquid cleansing composition.
(4) The dextrin fatty acid ester (B) is any one or more of dextrin palmitate, (palmitic acid / 2-ethylhexanoic acid) dextrin, and myristate dextrin. (1) to (3) The composition for oil-based liquid cleansing in any one.
(5) Anionic surfactant (D) is difatty acid acylglutamic acid lysine salt, polyoxyethylene alkyl ether sulfate, N-fatty acid acylmethyl taurate, fatty acid salt, N-fatty acid acyl glutamate, N-fatty acid acyl It is any one or more of methyl alanine salt, N-fatty acid acylalanine salt, N-fatty acid acyl sarcosine salt, N-fatty acid acyl isethionate, alkylsulfosuccinate, and alkyl phosphate (1) to (4) The oily liquid cleansing composition according to any one of (4).
(6) The anionic surfactant (D) is any one or more of difatty acid acylglutamic acid lysine salt, fatty acid salt, N-fatty acid acylglutamate salt, and N-fatty acid acylmethylalanine salt, The composition for oil-based liquid cleansing according to any one of (1) to (5), which is used.
(7) 40 to 95% by mass of oil (A), 0.5 to 5% by mass of dextrin fatty acid ester (B), 1 to 40% by mass of C8 to C10 fatty acid and polyglycerol ester (C) And 0.1 to 1% by weight of an anionic surfactant (D), 0.1 to 3% by weight of water, and 1 to 40% by weight of a nonionic surfactant other than (C). The composition for oil-based liquid cleansing according to any one of (1) to (6).

The oily liquid cleansing composition of the present invention comprises four components: an oil agent (A), a dextrin fatty acid ester (B), a fatty acid having 8 to 10 carbon atoms and a polyglycerol ester (C), and an anionic surfactant (D). By including, it was possible to ensure transparency and provide an oily liquid cleansing having a viscosity excellent in usability such as coating properties.
In particular, by using the dextrin fatty acid ester (B) and the anionic surfactant (D) in combination, an oily liquid cleansing having transparency and appropriate viscosity can be realized. In addition, it was possible to realize transparency with a viscosity of 300 to 1,000 mPa · s at 25 ° C. and a transmittance of light having a wavelength of 750 nm of 75% or more.
The oily liquid cleansing composition of the present invention can sufficiently exhibit cleansing power even when used in a state where water adheres to the hand or face.

  The oily liquid cleansing composition of the present invention comprises four components: an oil agent (A), a dextrin fatty acid ester (B), a fatty acid having 8 to 10 carbon atoms and a polyglycerol ester (C), and an anionic surfactant (D). contains. By including these five components, an oily liquid cleansing with a viscosity that can ensure transparency and has excellent usability such as coating properties has been developed. The viscosity is 300 to 1,000 mPa · s at 25 ° C. As for transparency, the transmittance of light having a wavelength of 750 nm is 75% or more. In addition to these four components, water, a nonionic surfactant (E) other than the B component, a cationic surfactant (F), and an amphoteric surfactant (G) can be blended. And even if the water | moisture content of the grade adhering to a hand or a face mixes, cleansing power is fully exhibited. It is a cleansing agent that can be used as it is without being dried even during face washing.

[Component A]
Examples of the component (A) constituting the oil used in the present invention include ester oils, animal and vegetable oils, hydrocarbon oils, silicone oils, higher fatty acids, and higher alcohols.

In particular, an ester of a monovalent fatty acid and a monovalent higher alcohol is preferable in order to exhibit the water resistance function of the oily liquid cleansing composition. Examples of esters of monovalent fatty acids and monovalent higher alcohols used in the present invention include cetyl 2-ethylhexanoate, ethyl 2-ethylhexanoate, stearyl 2-ethylhexanoate, isostearyl 2-ethylhexanoate, Examples include octyl isononanoate, isononyl isononanoate, isopropyl myristate, isodecyl isononanoate, isopropyl palmitate, octyl palmitate, hexyl laurate, octyl isopalmitate, and the like.
Animal and vegetable oils such as olive oil and jojoba oil, hydrocarbon oils such as liquid paraffin and squalane, silicone oils such as methylpolysiloxane and methylphenylpolysiloxane, higher fatty acids such as isostearic acid and oleic acid, and higher alcohols Examples include octyldodecanol and oleyl alcohol.

  The blending amount of the oil used in the present invention is preferably 40 to 95% by mass with respect to the total amount of the oily liquid cleansing composition. If it is less than 40% by mass, the effect of raising the makeup cosmetic from the skin will be poor, and if it exceeds 95% by mass, it will be difficult to wash off after the makeup cosmetic is familiarized.

[B component]
A dextrin fatty acid ester is used as the component (B) constituting the oily liquid cleansing composition of the present invention. For example, dextrin palmitate, (palmitic acid / 2-ethylhexanoic acid) dextrin, dextrin myristate and the like can be mentioned. As for the compounding quantity of dextrin fatty acid ester, 0.5-5 mass% is preferable. If it is less than 0.5% by mass, sufficient viscosity is difficult to obtain, and if it exceeds 5% by mass, it becomes difficult to dissolve transparently and the preparation tends to be too hard.

[C component]
As (C) component which comprises the oil-based liquid cleansing composition of this invention, C8-C10 fatty acid and polyglycerol ester are used. This is a nonionic surfactant. For example, pentacaprylic acid pentadecapolyglycerin, hexacaprylic acid eicosaglycerin, octacaprylic acid eicosaglycerin, decaprylic acid pentaeicosaglycerin, pentaisononanoic acid pentadecapolyglycerin, hexaisononanoic acid eicosaglycerin, heptaisononanoic acid eico Saglycerin, octaisononanoic acid eicosaglycerin, decaisononanoic acid pentaeicosaglycerin, pentacapric acid pentadecapolyglycerin, pentadecacaprylic acid eicosaglycerin, hexacapric acid eicosaglycerin, octacapric acid eicosaglycerin, decacapric acid Examples include pentaeicosaglycerin. The HLB is preferably 5 to 15 and more preferably 6 to 13 from the viewpoint of compatibility with the oil and dispersibility in water. The esterification degree of the fatty acid is preferably 5 to 12, and the polymerization degree of the polyglycerol is preferably 15 to 25.

The fatty acid having 8 to 10 carbon atoms and the ester of polyglycerin are preferably blended in the range of 1 to 40%, particularly 5 to 25% with respect to the total composition of the cleansing composition of the present invention. When the amount is less than 1%, the cleaning properties and washing properties of the composition are insufficient, and when the amount is more than 40%, “the fluidity is poor and the oily liquid cannot be maintained”, “stimulation to the skin during use, etc.” There is a possibility that a problem will occur.
A composition containing a fatty acid having 8 to 10 carbon atoms and an ester of polyglycerin can solubilize a large amount of water and has excellent dispersibility in water, so it is used in oily liquid cleansing cosmetics. By doing so, cleansing power is not impaired even if the skin is wet.

[D component]
An anionic surfactant is used as the component (D) constituting the oily liquid cleansing composition of the present invention. For example, difatty acid acyl glutamic acid lysine salt, polyoxyethylene alkyl ether sulfate, N-fatty acid acylmethyl taurine salt, fatty acid salt, N-fatty acid acyl glutamate, N-fatty acid acylmethylalanine salt, N-fatty acid acylalanine salt, N-fatty acid acyl sarcosine salts, N-fatty acid acyl isethionates, alkyl sulfosuccinates, alkyl phosphates and the like can be mentioned.

  The anionic surfactant is preferably blended in the formulation as an aqueous solution. When an anionic surfactant is directly blended, it becomes difficult to disperse uniformly. The compounding amount of the anionic surfactant is preferably 0.1 to 1% by mass. If it is less than 0.1% by mass, it is difficult to obtain the effect of transparently dispersing the dextrin fatty acid ester, and if it is 1% by mass or more, an anionic surfactant may be precipitated.

[Other ingredients]
For the oily liquid cleansing of the present invention, the component (C) is preferably blended as an aqueous solution. By doing so, a highly polar (C) component can be effectively disperse | distributed to the composition for oil-based liquid cleansing. Specifically, the component (C) is 30% aqueous solution of dilauroyl glutamic acid lysine sodium, 30% aqueous solution of cocoylmethylalanine sodium, 30% aqueous solution of cocoylmethylalanine triethanolamine, 30% aqueous solution of potassium cocoylglutamate, 30% aqueous solution of potassium laurate It is preferable to add as.
In order to exhibit the cleansing effect, the amount of water added is preferably as small as possible. The blending amount of water is preferably less than 3% by mass. In the Example mentioned later, (C) component will mix | blend 0.6% and water 1.4%.

As other components constituting the oily liquid cleansing composition of the present invention, as long as the effects of the present invention are not impaired, the (E) component is a nonionic surfactant other than fatty acid having 8 to 10 carbon atoms and polyglycerol ester. A cationic surfactant can be blended as the agent and the component (F), and an amphoteric surfactant can be blended as the component (G). Nonionic surfactants (E) other than fatty acid having 8 to 10 carbon atoms and polyglycerin ester include polyglyceryl diisostearate, polyglyceryl isostearate, polyglyceryl laurate, polyglyceryl myristate, polyglyceryl palmitate, polyglyceryl stearate, poly Examples include oxyethylene hydrogenated castor oil, polyoxyethylene sorbitan fatty acid ester, sorbitan fatty acid ester, sucrose fatty acid ester, and polyoxyethylene glycerin fatty acid ester. (E) As for the compounding quantity of a component, 1-40 mass% is preferable.
Examples of the cationic surfactant (F) include a 30% aqueous solution of stearyltrimethylammonium chloride.

[viscosity]
The viscosity of the oily liquid cleansing composition of the present invention is 300 to 1,000 mPa · s when measured with a B-type viscometer (rotor 1, 12 rpm, 30 seconds) at 25 ° C. If it is less than 300 mPa · s, the viscosity is too low, and application to the target site is not easy.

[transparency]
The oily liquid cleansing composition of the present invention has high transparency, and when filled into a cylindrical glass bottle having a diameter of 4 cm, a background image (ruled lines printed on paper) can be recognized through the bottle. When measured using an absorptiometer for the oily liquid cleansing composition of the present invention, the transmittance of visible light having an optical path length of 1 cm and a wavelength of 750 nm is 75% or more with respect to purified water.

  The oily liquid cleansing compositions of Examples 1 to 7 and Comparative Examples 1 to 8 shown in Tables 1 and 2 were prepared by the following production method. A is an oil agent, B is a dextrin fatty acid ester, C is an ester of a fatty acid having 8 to 10 carbon atoms and polyglycerin, D is an anionic surfactant, E is a nonionic surfactant, F is a cationic surfactant, H Is purified water.

(Manufacturing method)
Components 1 to 3 are heated and mixed at 80 ° C., and components 4 to 14 heated and mixed at 80 ° C. are added thereto, and cooled while stirring.

(Evaluation methods)
The appearance, stability, viscosity, makeup removal when mixing water and water in Examples 1 to 7 and Comparative Examples 1 to 8 and ease of application to the target site were evaluated according to the following criteria. The results are shown in Tables 1 and 2.

(1) Appearance The transparency of the oily liquid cleansing composition was visually evaluated according to the following criteria.
Transparent: When filled into a cylindrical glass bottle having a diameter of 4 cm, a background image (ruled lines printed on paper) can be recognized through the bottle.
Turbidity: When a cylindrical glass bottle with a diameter of 4 cm is filled, a background image (ruled lines printed on paper) cannot be recognized through the bottle.

(2) Visible light transmittance The oily liquid cleansing composition was put in a quartz cell having an optical path length of 1 cm, and the transmittance at a wavelength of 750 nm was measured with a spectrophotometer (HITACHI U-2000A) using purified water as a control sample.

(3) Stability The oily liquid cleansing composition was stored at 40 ° C. for 2 weeks, and the stability was evaluated according to the following criteria.
○: Stable (no change).
X: Sedimentation or separation occurred.

(4) Viscosity At 25 ° C., the viscosity was measured with a B-type viscometer (rotor 1, 12 rpm, 30 seconds).

(5) Makeup removal when water was mixed In order to reproduce the wet state of the hands, the oily liquid cleansing compositions described in Examples and Comparative Examples and water were mixed at a weight ratio of 10: 3.
Red lipstick was applied to the whole surface of artificial skin bioskin manufactured by bealux, and 0.1 g of the water mixed sample was dropped. It was applied with a finger for 30 seconds to draw a circle with a diameter of about 4 cm, and then washed with tap water.
The makeup removal was evaluated according to the following criteria.
○: The lipstick did not remain and fell clean.
X: Remaining lipstick was observed.

(6) “Ease of application to target site”
By adjusting the viscosity of the oily liquid cleansing composition and making it difficult to drip from the hand, the ease of application to the site to be applied (target site) is improved.
The panelists evaluated the “ease of application to the target site” during use. The cleansing composition used by each panel was 2 ml and applied to the face.
○: 4 or more out of 5 responded that “application to the target site is easy”.
Δ: 3 out of 5 responded that “application to the target site is easy”.
X: 2 or less of 5 responded that “application to the target site is easy”.

[Discussion]
(1) The oily liquid cleansing compositions of Examples 1 to 7 containing an anionic surfactant as component (D) are all transparent and have a light transmittance of 75% or more at 750 nm and are stable. It had a viscosity of 300 mPa · s or more, was excellent in makeup removal when mixed with water, and was easily applied to the target site.
(2) Comparative Examples 1 to 3 which do not contain the anionic surfactant (D) component are turbid, sedimentation occurs at 40 ° C. for 2 weeks, the viscosity does not reach 300 mPa · s, and it is applied to the face Was not easy.
(3) Comparative Example 4 containing no fatty acid having 8 to 10 carbon atoms and polyglycerin ester (C) was highly transparent, but the viscosity did not reach 300 mPa · s, and it was easy to apply to the face It wasn't. Moreover, it was inferior to makeup removal when water was mixed.
(4) In Comparative Example 5 which does not contain the dextrin fatty acid ester as the component (B), the viscosity did not reach 300 mPa · s, and application to the face was not easy.
(5) In Comparative Example 6 in which the cationic surfactant (F) was blended in place of the anionic surfactant (D), turbidity occurred, the viscosity did not reach 300 mPa · s, and application to the face was not easy There wasn't.

Claims (7)

  An oily liquid cleansing composition comprising an oil (A), a dextrin fatty acid ester, (B), a fatty acid having 8 to 10 carbon atoms, a polyglycerol ester (C), and an anionic surfactant (D) object.   2. The oily liquid cleansing composition according to claim 1, wherein the transmittance of light having a wavelength of 750 nm is 75% or more.   3. The oily liquid cleansing according to claim 1, wherein the viscosity is 300 to 1,000 mPa · s when measured with a B-type viscometer (rotor 1, 12 rpm, 30 seconds) at 25 ° C. Composition.   The dextrin fatty acid ester (B) is one or more of dextrin palmitate, (palmitic acid / 2-ethylhexanoic acid) dextrin, and dextrin myristate, according to any one of claims 1 to 3. Oily liquid cleansing composition.   Anionic surfactant (D) is difatty acid acylglutamic acid lysine salt, polyoxyethylene alkyl ether sulfate, N-fatty acid acylmethyl taurine salt, fatty acid salt, N-fatty acid acyl glutamate, N-fatty acid acylmethylalanine salt N-fatty acid acylalanine salt, N-fatty acid acyl sarcosine salt, N-fatty acid acyl isethionate, alkyl sulfosuccinate, alkyl phosphate, or any one of a plurality thereof. An oily liquid cleansing composition according to claim 1.   The anionic surfactant (D) is any one or more of di-fatty acid acylglutamic acid lysine salt, fatty acid salt, N-fatty acid acylglutamate salt, and N-fatty acid acylmethylalanine salt, and these aqueous solutions are used. The oily liquid cleansing composition according to any one of claims 1 to 5.   40 to 95% by mass of oil (A), 0.5 to 5% by mass of dextrin fatty acid ester (B), 1 to 40% by mass of C8 to C10 fatty acid and polyglycerol ester (C) 1 to 1% by mass of an anionic surfactant (D), 0.1 to 3% by mass of water, and 1 to 40% by mass of a nonionic surfactant other than (C). Item 7. The oily liquid cleansing composition according to any one of Items 1 to 6.