JP2013028550A - Oil-based cosmetic - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oil-based cosmetic which has controlled viscosity increase and controlled liquid separation over time and exhibits an excellent storage stability.SOLUTION: The oil-based cosmetic includes (A) aluminum corn starch octenylsuccinate, (B) dextrin fatty acid ester and/or 12-hydroxystearic acid and (C) an anhydride of an inorganic salt. Preferably, the component (C) is one or more kinds selected from the group consisting of anhydrous calcium chloride, anhydrous magnesium chloride, anhydrous calcium sulfate and anhydrous magnesium sulfate.

Description

  The present invention relates to an oily cosmetic. More specifically, the present invention relates to an oily cosmetic material having excellent storage stability.

  By applying a heat generation effect to cosmetics, when applied, it gives skin activation by comfort and blood circulation, and at the same time, it enhances the cleanliness and cleanability of skin and crevice by its thermal effect it can. Various studies have been made on cosmetics having such a heat generating action.

  For example, a cosmetic that applies heat when a polyalkylene glycol derivative and activated zeolite come into contact with water (see Patent Document 1), and a pack that uses heat generated when calcined gypsum comes into contact with water (see Patent Document 2) Is disclosed. Patent Document 3 discloses a non-aqueous system containing specific oils, inorganic salts or inorganic oxides such as magnesium chloride, calcium chloride, magnesium sulfate, and nonionic surfactants and / or cationic surfactants. Cosmetics are disclosed, and it is stated that when applied to skin and hair by mixing with water at the time of use, excellent conditioning effects (moisture, smoothness, etc.) can be obtained by improving the sorption property of the modifying ingredients. Has been.

  A study has also been made on the persistence of the exothermic action. In Patent Document 4, as an exothermic cosmetic that maintains the exothermic action, has no stickiness during use, is excellent in touch, and has excellent safety, Disclosed is a cosmetic comprising synthetic hydrotalcite and / or a calcined product thereof containing a sticky agent, a polyhydric alcohol and / or polyoxyalkylene glycol adduct that generates heat in contact with water, and anhydrous silicic acid and / or hydrous silicic acid. Has been. For exothermic control, it is described that it is preferable to use the polyhydric alcohol or polyoxyalkylene glycol adduct, anhydrous silicic acid or hydrous silicic acid together with synthetic hydrotalcite or a fired product thereof. Examples of the sticking agent include hydroxypropyl cellulose, octenyl succinic acid corn starch ester aluminum salt, synthetic aluminum silicate, and kaolin. Patent Document 5 describes that, by combining polyethylene glycol having a specific molecular weight with a heat generating agent such as magnesium sulfate, calcium chloride, and magnesium chloride, moderate heat generation is maintained by contact with moisture.

  On the other hand, in Patent Document 6, as cosmetics having a good heat generation effect and excellent storage stability, inorganic substances such as magnesium sulfate and calcium chloride are 1% by weight to 40% by weight, and polyhydric alcohol is 40% by weight. Cosmetics containing 0.1 wt.% Of polyglyceryl-10 (behenic acid / eicosanedioic acid), which is a gelling or solidifying agent of alcohol, are disclosed. It is described that it is preferable to add (behenic acid / eicosanedioic acid) polyglyceryl-10 for excellent storage stability.

Japanese Patent Application Laid-Open No. 6-1000041 JP 57-114506 A JP-A-11-228332 Japanese Patent No. 4550201 JP 2011-88915 A JP 2006-219465 A

  However, it is possible to produce oily cosmetics with excellent heat generation by taking these prior arts into consideration, but the viscosity may increase during storage or the oil (non-aqueous component) may be separated. Thus, it was found that the formulation stability was not yet sufficient.

  The subject of this invention is providing the oil-based cosmetics which are suppressed in the viscosity increase and liquid separation with time, and are excellent in storage stability.

  As a result of repeated studies to solve the above problems, the present inventors have found that (A) octenyl succinic acid corn starch ester aluminum, (B) dextrin fatty acid ester and / or 12-hydroxystearic acid, and (C) inorganic acid It has been found that when a salt anhydride is combined, an increase in viscosity over time and liquid separation are suppressed, and an oily cosmetic having excellent storage stability can be obtained, and the present invention has been completed.

  That is, the present invention provides an oily cosmetic comprising (A) octenyl succinic acid corn starch ester aluminum, (B) dextrin fatty acid ester and / or 12-hydroxystearic acid, and (C) an inorganic acid salt anhydride, About.

  The oily cosmetic of the present invention exhibits an excellent effect that the increase in viscosity and liquid separation over time are suppressed, and the storage stability is excellent.

  The oily cosmetic of the present invention is greatly used in combination with (A) octenyl succinic acid corn starch ester aluminum, (B) dextrin fatty acid ester and / or 12-hydroxystearic acid, and (C) an inorganic acid salt anhydride. Has characteristics. The oily cosmetic of the present invention is a non-aqueous composition containing the above components, and it is desirable that water is not substantially contained. Here, “substantially contain no water” means “not to add water separately”, and does not exclude a trace amount of water contained in each raw material.

  An inorganic acid salt anhydride (hereinafter sometimes referred to as an inorganic acid salt anhydride) has a property of generating heat due to hydration reaction due to water absorption and moisture absorption. Therefore, it is important to prevent contact between the inorganic acid anhydride and moisture until use, and it is blended in a heat-generating oily cosmetic (also referred to as non-aqueous cosmetic). On the other hand, dextrin fatty acid and / or 12-hydroxystearic acid has been conventionally used as a viscous agent from the viewpoint of solidifying oily cosmetics. However, when dextrin fatty acid and / or 12-hydroxystearic acid is simply added to an oily cosmetic in the presence of an inorganic acid anhydride, the inorganic acid anhydride is aggregated to increase viscosity, and storage stability is improved. It was found that it could not be maintained. Therefore, as a result of the study by the present inventors, surprisingly, when an octenyl succinic acid corn starch ester aluminum, which is a lipophilic powder, is further blended, an appropriate viscosity is obtained, and the viscosity is kept at a high temperature. It was maintained after storage, and it was found that the formulation stability was improved.

(A) Octenyl succinic acid corn starch ester aluminum Octenyl succinic acid corn starch ester aluminum is a cross-linked starch derivative in which octenyl succinic acid is esterified to corn starch and an aluminum salt is added. It is a hydrophobic white powder and has the property of absorbing oil. The average particle diameter is not particularly limited, and for example, “DRY-FLO PC” (manufactured by NATIONAL STARCH and CHEMICAL) can be suitably used as a commercial product.

  (A) Content of a component has preferable 3-60 mass% in cosmetics, 5-50 mass% is more preferable, 10-40 mass% is further more preferable.

(B) Dextrin fatty acid ester and / or 12-hydroxystearic acid Examples of the dextrin fatty acid ester include esters of dextrin and preferably higher fatty acids having 8 to 22 carbon atoms, specifically, ethylhexanoic acid dextrin and laurin. Acid dextrin, dextrin palmitate, dextrin myristate, dextrin stearate, dextrin behenate, coconut oil fatty acid dextrin, (palmitic acid / ethylhexanoic acid) dextrin and the like. In the present invention, one of these dextrin fatty acid esters and 12-hydroxystearic acid can be used alone or in combination of two or more. Of these, dextrin palmitate, (palmitic acid / ethylhexanoic acid) dextrin, and 12-hydroxystearic acid are preferable from the viewpoint of obtaining an appropriate viscosity. Examples of suitable commercially available products include “Leopard KL2”, “Leopard KS2”, “Leopard TL2”, “Leopard TT2” (manufactured by Chiba Flour Mills Co., Ltd.), and “hydroxystearic acid” (manufactured by Kawaken Fine Chemical Co., Ltd.). The

  The content of the component (B) is preferably 0.1 to 20% by mass, more preferably 0.5 to 15% by mass, and still more preferably 1 to 10% by mass with respect to dextrin fatty acid esters in the cosmetic. Regarding 12-hydroxystearic acid, 0.01-5 mass% is preferable, 0.05-3 mass% is more preferable, 0.1-1 mass% is further more preferable. When a plurality of dextrin fatty acid esters are used, the content means the total amount thereof.

(C) Anhydrous salt of inorganic acid salt The inorganic acid salt anhydride used in the present invention is not particularly limited as long as it generates heat when mixed with water and exhibits an appropriate thermal feeling. For example, anhydrous inorganic acid salts such as calcium chloride, magnesium chloride, aluminum chloride, ferric chloride, zinc chloride, calcium sulfate, magnesium sulfate, zinc sulfate, aluminum sulfate, ferrous sulfate, calcium carbonate, sodium carbonate, etc. Illustrated. These can be used alone or in combination of two or more. Of these, anhydrous calcium chloride, anhydrous magnesium chloride, anhydrous calcium sulfate, and anhydrous magnesium sulfate are preferred from the viewpoint of generating heat quickly after mixing with water and providing an appropriate thermal feeling. As a suitable commercial item, "anhydrous magnesium sulfate A" (made by Tomita Pharmaceutical Co., Ltd.) is illustrated.

  (C) As for content of a component, 1-50 mass% is preferable in cosmetics, 3-45 mass% is more preferable, and 5-40 mass% is further more preferable. In addition, when a several compound is used as (C) component, content of (C) component means those total amounts.

  Further, the ratio of the mass of the component (A) to the component (C) [(A) component / (C) component] is preferably 0.1 to 50 from the viewpoint of the balance between the preparation stability and the exothermic effect. 3 to 30 is more preferable, and 0.5 to 20 is more preferable.

  In addition to the components (A) to (C), the oily cosmetic of the present invention is a component that is usually used in cosmetics within a range that does not impair the effects of the present invention, for example, polyhydric alcohols such as ethylene glycol and diethylene glycol; silica Powders such as spherical polyethylene and crystalline cellulose; clay minerals such as kaolin, talc and mica; thickening components such as thickening polymers; oily components such as solid waxes, esters, hydrocarbons, fats and oils, higher fatty acids; Surfactants such as ionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants; powders such as inorganic pigments, organic pigments, pearl pigments; antioxidants, preservatives, ultraviolet rays An absorbent, a plant extract, a fragrance | flavor, etc. can be contained suitably.

  If the oily cosmetics of this invention contain the said (A)-(C) component, it will not specifically limit and can be prepared according to a well-known method. For example, it can manufacture by mixing the said (A)-(C) component and stirring with a disper mill.

  In addition, the oily cosmetic of the present invention is preferably in the form of a paste or gel, more preferably in the form of a paste, from the viewpoint of obtaining good usability during application. In addition, the form is not particularly limited, but it can be a product form filled in a jar container, a tube container, etc., and is preferably used as a facial cleanser, massage cosmetic, shaving agent, body soap, hand soap, etc. Can do.

  Although it does not specifically limit as a usage method, For example, (1) After applying this oily cosmetics to dry skin, the method of making it adapt with the fingertip wet with water; (2) Applying this oily cosmetics to wet skin After that, a method of blending with a dry fingertip or a fingertip wet with water; (3) Taking the oily cosmetic on a dry fingertip, soaking the oily cosmetic and the fingertip in water, and applying to the skin (4) A method of taking the oily cosmetic on a fingertip wetted with water and applying it to the skin to make it familiar can be exemplified. Since the oily cosmetic of the present invention has excellent viscosity even after storage over time, it can be used over a long period of time.

  EXAMPLES Hereinafter, although this invention is demonstrated based on an Example and a comparative example, this invention is not limited at all by these Examples.

Examples 1-14 and Comparative Examples 1-15
The oily cosmetics having the compositions shown in Tables 1 to 4 were prepared by warming the component (B) and the oily components to be uniform, and then charging the powders and stirring them with a disper.

  Next, about the obtained oily cosmetics, the following test examples 1-3 were evaluated. The results are shown in Tables 1 to 4.

Test Example 1 (Properties)
Using a rheometer (manufactured by Sun Kagaku Co., Ltd.), the consistency of the oily cosmetic immediately after preparation was set to a rotor 10Φ mm sphere, needle penetration 20 mm, speed 6 cm / min. Properties were evaluated according to criteria. “◯” indicates viscosity suitable for discharging from a tube having an inner diameter of 6.5Φ, “△” indicates that the tube hangs from the tube or is too hard, and “×” indicates that the tube is liquid or separated. It means that it is not viscous enough to be filled.

[Evaluation criteria for properties]
○: Consistency is 50 gf or more and 150 gf or less Δ: Consistency is less than 50 gf, more than 150 gf x: Consistency cannot be measured, or agent is separated (separation is observed)

Test example 2 (inhibition of increase in consistency)
For oily cosmetics stored for 1 month in a constant temperature bath at 40 ° C., after measuring the consistency in the same manner as in Test Example 1, the consistency variability is calculated from the following formula, and the increase in consistency is controlled according to the following evaluation criteria. evaluated.
Consistency variability (%) = consistency after storage at 40 ° C./consistency immediately after preparation × 100

[Evaluation criteria for suppression of consistency rise]
○: Consistency variability is 90% or more and 150% or less Δ: Consistency variability is more than 150%, 200% or less ×: Consistency variability is more than 200%

Test Example 3 (Liquid separation suppression)
The oily cosmetic stored for 1 month in a 40 ° C. thermostat was visually observed, and the inhibition of liquid separation was evaluated according to the following evaluation criteria.

[Evaluation criteria for liquid separation inhibition]
○: No liquid separation is observed Δ: Some liquid separation is observed ×: Clear liquid separation is observed

  From the above results, it can be seen that the oily cosmetics of the examples maintain good viscosity without occurrence of liquid separation even after storage over time. On the other hand, Comparative Examples 1 to 8 and 14 contain various powders and starches in place of corn starch aluminum octenyl succinate, but all of them show increased consistency after storage over time, and the uniformity of the agent is lost. It has been broken. In Comparative Examples 9 to 11, the (A) component and the (C) component are the same as the oily cosmetic of the present invention, and the adhesive is different, but the consistency increased after storage over time, and the agent The uniformity of was lost. This suggests that the storage stability of the oily cosmetic is improved only when the components (A), (B), and (C) are combined.

  Hereinafter, formulation examples of the oily cosmetic of the present invention will be shown. In addition, content is mass%.

(Formulation Example 1) Cleaner for pores (for nose)
Cetyl octoate 38.7
Ceresin 1.0
Anhydrous magnesium sulfate 15.0
Anhydrous calcium chloride 15.0
(Palmitic acid / ethylhexanoic acid) dextrin 4.0
Polyoxyethylene sorbitan monostearate (20E.O.) 2.0
Polyoxyethylene hydrogenated castor oil 3.0
Octenyl succinic acid corn starch ester aluminum 20.0
l-Menthol 0.5
Spherical polyethylene 0.5
Black iron oxide 0.1
Vitamin E 0.2
Total 100.0

(Prescription Example 2) Body Massage Fee Octildodecanol 1.0
Octyl palmitate 37.0
Anhydrous magnesium sulfate 30.0
Dextrin palmitate 3.0
Octenyl succinic acid corn starch ester aluminum 18.0
Dimethyl distearyl ammonium hectorite 0.5
Glyceryl tribehenate 0.5
l-Menthol 0.5
Vitamin E 0.2
Fragrance 0.3
Crystalline cellulose 8.0
Polyethylene 1.0
Total 100.0

(Prescription example 3) facial massage liquid paraffin 43.0
Vaseline 2.0
Anhydrous magnesium sulfate 25.0
Octenyl succinic acid corn starch ester aluminum 20.0
12-hydroxystearic acid 0.5
N-lauroylmethyl taurine sodium 3.0
l-Menthol 0.5
Neopentyl glycol dicaprate 4.0
Spherical polyethylene 2.0
Total 100.0

  Since the oily cosmetic of the present invention has excellent viscosity even after storage over time, it can be suitably used for facial cleansing agents, massage cosmetics, shaving agents, body soaps, hand soaps, and the like.

Claims (2)

  An oily cosmetic comprising (A) octenyl succinic acid corn starch ester aluminum, (B) dextrin fatty acid ester and / or 12-hydroxystearic acid, and (C) an inorganic acid salt anhydride.   The oily cosmetic according to claim 1, wherein the component (C) is one or more selected from the group consisting of anhydrous calcium chloride, anhydrous magnesium chloride, anhydrous calcium sulfate, and anhydrous magnesium sulfate.