WO2011071079A1 - 皮膚洗浄剤 - Google Patents
皮膚洗浄剤 Download PDFInfo
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- WO2011071079A1 WO2011071079A1 PCT/JP2010/072021 JP2010072021W WO2011071079A1 WO 2011071079 A1 WO2011071079 A1 WO 2011071079A1 JP 2010072021 W JP2010072021 W JP 2010072021W WO 2011071079 A1 WO2011071079 A1 WO 2011071079A1
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- iob
- water
- skin cleanser
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Classifications
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- A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
- A61K8/84—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions otherwise than those involving only carbon-carbon unsaturated bonds
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- A—HUMAN NECESSITIES
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- A61Q19/02—Preparations for care of the skin for chemically bleaching or whitening the skin
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- A—HUMAN NECESSITIES
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- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q5/00—Preparations for care of the hair
- A61Q5/02—Preparations for cleaning the hair
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/04—Carboxylic acids or salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/83—Mixtures of non-ionic with anionic compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/12—Water-insoluble compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/12—Water-insoluble compounds
- C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/12—Water-insoluble compounds
- C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
- C11D3/1246—Silicates, e.g. diatomaceous earth
- C11D3/1253—Layer silicates, e.g. talcum, kaolin, clay, bentonite, smectite, montmorillonite, hectorite or attapulgite
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/12—Water-insoluble compounds
- C11D3/124—Silicon containing, e.g. silica, silex, quartz or glass beads
- C11D3/1246—Silicates, e.g. diatomaceous earth
- C11D3/1253—Layer silicates, e.g. talcum, kaolin, clay, bentonite, smectite, montmorillonite, hectorite or attapulgite
- C11D3/1266—Layer silicates, e.g. talcum, kaolin, clay, bentonite, smectite, montmorillonite, hectorite or attapulgite in liquid compositions
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
- A61K2800/28—Rubbing or scrubbing compositions; Peeling or abrasive compositions; Containing exfoliants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
- A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
- A61K2800/41—Particular ingredients further characterized by their size
- A61K2800/412—Microsized, i.e. having sizes between 0.1 and 100 microns
Definitions
- the present invention relates to a skin cleanser.
- a scrub cleaning agent in which particles are contained in the cleaning agent is known.
- the particles get into the fine irregularities of the skin, such as pores and skin grooves, removing sebum and dirt in the pores and skin grooves, and at the same time making the user feel the feel of the particles . Therefore, the particles in the cleaning agent can give the user a satisfaction that the dirt has been removed.
- Patent Document 1 combines a fatty acid having a specific composition and a salt thereof with water-insoluble particles
- Patent Document 2 includes a higher fatty acid salt, a specific amino acid surfactant, and a water-insoluble solid powder.
- a detergent composition excellent in foamability can be obtained by combining.
- the foam quality is creamy when foamed, so that the particles are entrained in the foam, the graininess of the particles is impaired during washing, and the cleaning effect and washing feeling by the particles cannot be obtained. There was a problem of ending up.
- the grain feeling at the start of cleaning becomes too strong, giving the user a sense of discomfort. There was a problem.
- Patent Document 3 describes a scrubbing detergent composition containing sodium hydrogen carbonate particles having a specific particle size distribution and a fatty acid salt. However, even in this cleaning composition, since the fatty acid salt is used in a controlled particle size range, there is a problem that the particles are involved in the foam during the cleaning and the grain feel is impaired. . In any of Patent Documents 1, 2, and 3, there is no description of modifying the foam quality in actual use and controlling the sustainability of the particles.
- the skin cleanser of the present invention has a foaming property that is the basic performance as a cleansing agent and gentleness to the skin, and has a foam quality that allows the user to continuously feel an appropriate grain feel during use. Can provide a high cleaning feeling and a reliable cleaning effect.
- the present invention maintains the grain feel of moderately strong particles even during foaming, thereby providing the user with a high cleaning feeling and a reliable cleaning effect. It is related with the skin cleansing agent which can provide.
- the present inventors have used a higher fatty acid salt, polyoxyethylene alkyl ether carboxylic acid or a salt thereof, and a specific amphiphile in combination with water-insoluble particles (scrub) to thereby solve the above-described problems. It was found that an agent can be obtained.
- R 1 represents an alkyl group having 11 to 23 carbon atoms
- X represents a hydrogen atom, an alkali metal, ammonium or organic ammonium
- R 1 is preferably a linear alkyl group having 11 to 16 carbon atoms.
- X include alkali metals such as sodium and potassium; ammonium; alkanolamines such as monoethanolamine, diethanolamine and triethanolamine; cations derived from basic amino acids such as arginine and lysine.
- lauric acid More specific examples include lauric acid, myristic acid, palmitic acid, stearic acid, arachidic acid, behenic acid, lignoceric acid, and salts thereof. Lauric acid, myristic acid, palmitic acid, and salts thereof are preferable. Of these, potassium salts of lauric acid, myristic acid and palmitic acid are more preferred.
- the higher fatty acid of component (A) or a salt thereof can be used alone or in combination of two or more.
- the higher fatty acid is contained in the total composition in an amount of 1 to 30% by weight, preferably 1 to 25% by weight, more preferably Is contained in an amount of 2 to 20% by weight. Within this range, quick foaming and good rinsing properties can be obtained.
- the higher fatty acid or its salt of a component (A) does not contain a branched and unsaturated fatty acid.
- the component (B) used in the present invention is polyoxyethylene alkyl ether carboxylic acid or a salt thereof, and those represented by the following general formula (2) are preferable.
- R 2 represents an alkyl or alkenyl group having 10 to 18 carbon atoms
- m represents an average number of 0.5 to 10
- M represents a hydrogen atom or an alkali metal
- R 2 is preferably an alkyl group having 12 to 16 carbon atoms.
- the average added mole number m of ethylene oxide is 0.5 to 10, but preferably 1 to 6.
- Examples of the alkali metal represented by M include sodium and potassium, and an alkali metal hydroxide such as sodium hydroxide or potassium hydroxide can be used for blending.
- an alkali metal hydroxide such as sodium hydroxide or potassium hydroxide can be used for blending.
- potassium hydroxide is preferable because it is used as an aqueous cleaning agent.
- Component (B) can be used singly or in combination of two or more, and it is contained as a polyoxyethylene alkyl ether carboxylic acid in an amount of 0.5 to 10% by weight, preferably 1 to 8% by weight, The content is preferably 2 to 7% by weight. If it is within this range, it is possible to achieve both the slip of the foam, the non-stickiness at the time of rinsing and a refreshing feeling.
- the foam film becomes soft, and it is easy to feel the appropriate scrub grain feeling at the initial use (foaming initial stage).
- Component (C) is an amphiphilic substance having an IOB of 0.25 to 1.2.
- the IOB of component (C) is preferably 0.26 to 1.1, more preferably 0.43 to 0.9.
- the IOB means an organic conceptual diagram (Akira Fujita, prediction of organic compounds and an organic conceptual diagram, chemistry area Vol. 11, No. 10 (1957) 719-725) and an organic value. This represents a ratio of values (Inorganic Organic Balance), and is obtained by the following equation.
- polyoxyethylene alkyl ether, fatty acid polyoxyethylene sorbitan, polyoxyethylene hydrogenated castor oil, and (di) glycerin monoalkyl ether are preferred.
- the component (C) those having a molecular weight of 100 to 550 have the same molecular weight as the component (A) or the component (B), and the molecule of the component (C) is the molecule or component of the component (A). Like the molecule (B), it is considered that it can be aligned along the gas-liquid interface, which is preferable. Furthermore, the structure having a branched alkyl chain, a multi-chain, or a secondary alcohol having an ethylene oxide chain improves fluidity by disturbing the molecules of component (A) and the arrangement of component (B) in the foam film. This is more preferable because it is high and can prevent the foam from being densified by massage.
- Component (C) may be used alone or in combination of two or more, and is contained in the total composition in an amount of 0.1 to 10% by weight, preferably 0.2 to 8% by weight, more preferably 0.3 to 5%. Contains by weight. Within this range, even when the detergent is soaked and foamed, it can be adjusted so as not to have a high foam density (a large foam containing a lot of air, which does not easily become creamy).
- the skin cleaning agent of the present invention aims to maintain the grain feel of water-insoluble particles (D), A dense and thick foam cannot sustain the grain feeling.
- the foam film is formed such that the component (A) molecule and the component (B) molecule are aligned along the gas-liquid interface.
- the component (D) used in the present invention is water-insoluble particles and has an average particle size of 50 to 500 ⁇ m.
- inorganic powders such as titanium oxide, talc, kaolin, bentonite, sodium chloride, silica, and mica titanium, sugars such as silicone powder, silk powder, hemp fiber powder, cellulose or derivatives thereof, polyethylene, polypropylene
- organic powders that are synthetic polymers such as polyethylene oxide, ethylene acrylic acid copolymer, polystyrene, nylon, and acrylic resin.
- a granulated powder in which the above water-insoluble particles are used as primary particles and a plurality of powders are bonded using a binder can also be used.
- the binder include polyvinyl alcohol and / or derivatives thereof, poly (meth) acrylic acid alkali salt, alkali salt of (meth) acrylic acid ester copolymer, alkali salt of acrylic acid / maleic acid copolymer, polyvinylpyrrolidone, and the like.
- Synthetic products such as; semi-synthetic products such as methyl cellulose, ethyl cellulose, carboxymethyl cellulose, hydroxyalkyl cellulose, starch derivatives; and natural polymers such as starch, seaweeds, plant mucilage, and proteins.
- water-insoluble granulated powder is preferred.
- polyvinyl alcohol and / or a derivative thereof is used as a binder, it is considered more preferable because the granulated powder easily disintegrates by rinsing water at the time of rinsing and the rinsing property becomes high.
- More preferable granulated powder is a granulated powder having an average particle diameter of 1 to 70 ⁇ m and granulated with an average particle diameter of 50 to 500 ⁇ m by granulating the primary particles of cellulose using maleic acid-modified polyvinyl alcohol as a binder. It is done.
- These particles are more preferable because the particles are easily disintegrated by rinsing water and tears in the washing process and the rinsing process, so that the skin is less damaged and itchy, and the washability is very good.
- the water-insoluble particles of component (D) have an average particle size (measured with a laser diffraction / scattering particle size distribution measuring apparatus LA-910 (manufactured by Horiba), and the average particle size is a median diameter) of 50 to 500 ⁇ m. Is.
- the average particle size is less than 50 ⁇ m, it is difficult to feel the particles when foamed and the cleaning power against pores and skin grooves is reduced. If the average particle size exceeds 500 ⁇ m, the skin may be uncomfortable during use.
- the average particle diameter is preferably 60 to 400 ⁇ m.
- Component (D) may be used alone or in combination of two or more, and is contained in the total composition in an amount of 1 to 25% by weight, preferably 2 to 15% by weight.
- the skin cleanser of the present invention can further contain (E) a polymer thickener and can improve the dispersion stability of the particles and the usability during use.
- a polymer thickener can improve the dispersion stability of the particles and the usability during use.
- an acrylic acid / alkyl methacrylate copolymer is preferable.
- the polymer thickener of component (E) can be used alone or in combination of two or more, preferably 0.05 to 1.5% by weight in the total composition, 0.2 to 1.2 More preferably, it is contained in an amount of 0.4% to 0.9% by weight. If it is in this range, it can be easily taken from the container, and when mixed with water at the time of use, it is very soluble and easy to extend.
- water accounts for the balance of components (A) to (E), and is preferably contained in an amount of 30 to 90% by weight, more preferably 50 to 80% by weight in the total composition.
- the skin cleanser of the present invention can be stored at a lower temperature by using it in combination with an amphoteric surfactant such as a carboxylic acid type amphoteric surfactant, a sulfonic acid type amphoteric surfactant, and a phosphate ester type amphoteric surfactant. It is possible to ensure the stability of the later component (D) (prevent floating and settling).
- an amphoteric surfactant such as a carboxylic acid type amphoteric surfactant, a sulfonic acid type amphoteric surfactant, and a phosphate ester type amphoteric surfactant.
- the skin cleansing agent of the present invention it is more preferable to use a combination of preferable ranges of each component.
- the skin cleanser of the present invention is (A) 1 to 30% by weight of higher fatty acid or salt thereof, (B) polyoxyethylene alkyl ether carboxylic acid or a salt thereof 0.5 to 10% by weight, (C) Amphiphilic substance selected from polyoxyethylene alkyl ethers having a IOB of 0.25 to 1.2, fatty acid polyoxyethylene sorbitan, polyoxyethylene hydrogenated castor oil, and (di) glycerin monoalkyl ethers 0.1 Up to 10% by weight, (D) 1 to 25% by weight of water-insoluble particles having an average particle size of 50 to 130 ⁇ m and an average particle size of 240 to 500 ⁇ m Containing (Average particle diameter 240 to 500 ⁇ m) / (average particle diameter 50 to 130 ⁇ m) is 1/2 to 1/12,
- the weight ratio of the components (A), (B) and (C) is
- each component can be used 1 type or in combination of 2 or more types.
- the content of component (A) is preferably 1 to 25% by weight, more preferably 2 to 20% by weight, based on the total composition.
- the content of component (B) is preferably 1 to 8% by weight, more preferably 2 to 7% by weight, based on the total composition.
- the content of component (C) is preferably 0.2 to 8% by weight, more preferably 0.3 to 5% by weight, based on the total composition.
- the content of component (D) is 1 to 25% by weight, more preferably 2 to 15% by weight, based on the total composition.
- the content of the component (E) is preferably 0.05 to 1.5% by weight in the total composition, more preferably 0.2 to 1.2% by weight, more preferably 0.4 to 0.9% by weight.
- the skin cleanser of the present invention further includes components used in normal skin cleansers, such as humectants such as sorbitol, oily components, bactericides, anti-inflammatory agents, antiseptics, chelating agents, It can contain a sticking agent, salts, a pearling agent, a fragrance, a cooling sensation agent, a pigment, an ultraviolet absorber, an antioxidant, a plant extract and the like.
- humectants such as sorbitol
- oily components such as bactericides, anti-inflammatory agents, antiseptics, chelating agents
- It can contain a sticking agent, salts, a pearling agent, a fragrance, a cooling sensation agent, a pigment, an ultraviolet absorber, an antioxidant, a plant extract and the like.
- the skin cleanser of the present invention can be produced, for example, by the following method. That is, components (A) and (B) are added and completely dissolved in purified water heated to 70 ° C. or higher. If necessary, a polymer thickener is dispersed in a part of purified water and added to the above solution. The solution is then neutralized with potassium hydroxide. Next, a component (C) and a component (D) are added, it stirs until it becomes completely uniform, and it cools to room temperature, A skin cleansing agent can be obtained.
- the skin cleanser of the present invention is suitable as, for example, a facial cleanser, body soap, hand soap and the like.
- Examples 1-28 and Comparative Examples 1-9 Skin cleansing agents having the compositions shown in Tables 1 to 4 were produced, and foaming, foam feeling, foam bulkiness, graininess of water-insoluble particles, cleaning effect, cleaning feeling, rinsing properties and room temperature stability were evaluated. The results are also shown in Tables 1 to 4.
- components (A) and (B) were added and completely dissolved in about 25% by weight of purified water heated to 70 ° C. or higher.
- component (E) was dispersed in 20% by weight of water and added to the above solution.
- an amount of potassium hydroxide that neutralizes components (A), (B), and (E) was added and stirred until uniform.
- component (C) other than glycerin mono-2-ethylhexyl ether was added and stirred to obtain a uniform solution. After this, it was cooled to room temperature.
- Bubble feel Have 5 professional panelists actually use each skin cleanser, and sensory evaluate the softness of the foam when massaging the face with foamed hands by the five-step evaluation criteria shown in (II), The average value of the scores was obtained.
- Rinsability 5 expert panelists take 1g of each skin cleanser, add a small amount of water, lather and wash the face, then rinse with tap water. The rinsability at that time was subjected to sensory evaluation according to the five-step evaluation criteria shown in (VI), and the average value of each score was determined.
- VI Five-level evaluation criteria; 5; Easy to rinse. 4; 3; Neither can be said. 2; Not easy to rinse. 1: It is not easy to rinse.
- Example 29 skin cleanser (face wash)
- a skin cleanser having the following composition was produced in the same manner as in Production Method (3) of Examples 1 to 28 according to the formulation composition.
- excellent results were obtained in all cases.
- Example 30 (Skin cleanser (whole body cleanser)) A skin cleanser having the following composition was produced in the same manner as in Production Method (2) of Examples 1 to 28 according to the formulation composition. When the above-described evaluation was performed on the obtained skin cleanser, excellent results were obtained in all cases.
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Abstract
Description
なお、特許文献1、2及び3のいずれにも、実使用において泡質を改質し、粒子の持続性をコントロールすることについての記載は存しない。
(A)高級脂肪酸又はその塩 1~30重量%、
(B)ポリオキシエチレンアルキルエーテルカルボン酸又はその塩 0.5~10重量%、
(C)IOBが0.25~1.2の両親媒性物質 0.1~10重量%、
(D)平均粒径50~500μmの水不溶性粒子 1~25重量%
を含有し、成分(A)及び(B)の重量割合が、(A)/(B)=1/2~10/1である皮膚洗浄剤を提供するものである。
成分(A)及び(B)の重量割合は、(A)/(B)=1/2~10/1、好ましくは、1/2~7/1である。1/2未満では、泡質やすすぎ性が悪くなり、スクラブ感は感じられるものの、すすぎ時にぬるついてさっぱりとした洗浄感が損なわれる。また、10/1を超えると、緻密で濃厚な泡になり、粒子が泡の中に紛れてしまい、使用時の粒感を感じにくくなり、洗浄実感を感じにくくなる。
ここで、IOBとは、有機概念図(藤田穆、有機化合物の予測と有機概念図、化学の領域 Vol.11,No.10(1957)719-725)に基づき求められる無機性値及び有機性値の比(Inorganic Organic Balance)を表わすもので、次式により求められるものである。
これらのうち、ポリオキシエチレンアルキルエーテル、脂肪酸ポリオキシエチレンソルビタン、ポリオキシエチレン硬化ヒマシ油、(ジ)グリセリンモノアルキルエーテルが好ましい。
さらに、その構造が分岐アルキル鎖又は多鎖又は第2級アルコールでエチレンオキサイド鎖を有するものが、泡膜における成分(A)の分子や成分(B)の配列を乱すことによる流動性を高める効果が高く、マッサージによる泡の緻密化を防ぐことができるため、より好ましい。
具体的には、POE(5)イソステアリルエーテル(IOB=0.86、分子量490)、POE(5)オクチルドデシルエーテル(IOB=0.81、分子量518)、イソステアリン酸(IOB=0.43、分子量284)、2-オクチルドデカノール(IOB=0.26、分子量298)、POE(3.3)モノアルキル(C12~14)エーテル(IOB=0.89、分子量345)、グリセリンモノ2-エチルヘキシルエーテル(IOB=1.05、分子量204)等が挙げられる。
成分(C)は、成分(A)及び(B)との重量割合が、((A)+(B))/(C)=2/1~30/1、更に2.5/1~10/1となるように含有されると、好ましい泡密度を保つことができる。
具合的には、酸化チタン、タルク、カオリン、ベントナイト、塩化ナトリウム、シリカ、雲母チタン等の無機粉体や、シリコーンパウダー、シルクパウダー、麻繊維パウダー、セルロース又はその誘導体等の糖類や、ポリエチレン、ポリプロピレン、酸化ポリエチレン、エチレンアクリル酸コポリマー、ポリスチレン、ナイロン、アクリル樹脂等の合成高分子である有機粉体が挙げられる。
その中でも、ポリビニルアルコール及び/又はその誘導体を結合剤として用いると、すすぎ時にすすぎ水によって造粒粉体が容易に崩壊し、すすぎ性が高くなるため、より好ましいと考えられる。更に好ましい造粒粉体としては、平均粒径1~70μmであるセルロースの一次粒子を、マレイン酸変性ポリビニルアルコールを結合剤として造粒し、平均粒径50~500μmとした造粒粉体が挙げられる。この粒子は、洗浄過程及びすすぎ過程において、すすぎ水や涙によって容易に粒子が崩壊するため、皮膚の損傷やかゆみの発生が少なく、また、洗い流し性が極めて良好であり、より好ましい。
また、大きな粒子(平均粒径240~500μm、好ましくは平均粒径250~350μm)と小さな粒子(平均粒径50~130μm、好ましくは平均粒径80~120μm)を組み合わせて使用するのが好ましい。更に、大きな粒子と小さな粒子の重量割合が、(平均粒径240~500μm、好ましくは平均粒径250~350μm)/(平均粒径50~130μm、好ましくは平均粒径80~120μm)=1/2~1/12、更には、1/3~1/10であるのが、より洗浄効果が高くなるので好ましい。
成分(D)は、1種又は2種以上を用いることができ、全組成中に1~25重量%、好ましくは、2~15重量%含有される。
具体的には、アクリル酸・メタクリル酸アルキル共重合体が好ましく、例えば、カーボポールETD-2020、カーボポール1342、カーボポール1382、ペムレンTR-1、ペムレンTR-2(以上、ノベオン(NOVEON)社製)等が挙げられる。
(A)高級脂肪酸又はその塩 1~30重量%、
(B)ポリオキシエチレンアルキルエーテルカルボン酸又はその塩 0.5~10重量%、
(C)IOBが0.25~1.2の両親媒性物質 0.1~10重量%、
(D)平均粒子径50~500μmの水不溶性粒子 1~25重量%
を含有し、成分(A)及び(B)の重量割合が、(A)/(B)=1/2~10/1であり、
成分(A)、(B)及び(C)の重量割合が、((A)+(B))/(C)=2/1~30/1であるのが好ましい。
(A)高級脂肪酸又はその塩 1~30重量%、
(B)ポリオキシエチレンアルキルエーテルカルボン酸又はその塩 0.5~10重量%、
(C)IOBが0.25~1.2の両親媒性物質 0.1~10重量%、
(D)平均粒子径50~500μmの水不溶性粒子 1~25重量%、
(E)高分子増粘剤 0.05~1.5重量%
を含有し、成分(A)及び(B)の重量割合が、(A)/(B)=1/2~10/1であり、
成分(A)、(B)及び(C)の重量割合が、((A)+(B))/(C)=2/1~30/1であるのが好ましい。
(A)高級脂肪酸又はその塩 1~30重量%、
(B)ポリオキシエチレンアルキルエーテルカルボン酸又はその塩 0.5~10重量%、
(C)IOBが0.25~1.2であるポリオキシエチレンアルキルエーテル、脂肪酸ポリオキシエチレンソルビタン、ポリオキシエチレン硬化ヒマシ油及び(ジ)グリセリンモノアルキルエーテルから選ばれる両親媒性物質 0.1~10重量%、
(D)平均粒子径50~500μmの水不溶性粒子 1~25重量%、
を含有し、成分(A)及び(B)の重量割合が、(A)/(B)=1/2~10/1であり、
成分(A)、(B)及び(C)の重量割合が、((A)+(B))/(C)=2/1~30/1であるのが好ましい。
(A)高級脂肪酸又はその塩 1~30重量%、
(B)ポリオキシエチレンアルキルエーテルカルボン酸又はその塩 0.5~10重量%、
(C)IOBが0.25~1.2の分岐脂肪酸から選ばれる両親媒性物質 0.1~10重量%、
(D)平均粒子径50~500μmの水不溶性粒子 1~25重量%
を含有し、成分(A)及び(B)の重量割合が、(A)/(B)=1/2~10/1であり、
成分(A)、(B)及び(C)の重量割合が、((A)+(B))/(C)=2/1~30/1であるのが好ましい。
(A)高級脂肪酸又はその塩 1~30重量%、
(B)ポリオキシエチレンアルキルエーテルカルボン酸又はその塩 0.5~10重量%、
(C)IOBが0.25~1.2の分岐高級アルコールから選ばれる両親媒性物質 0.1~10重量%、
(D)平均粒子径50~500μmの水不溶性粒子 1~25重量%
を含有し、成分(A)及び(B)の重量割合が、(A)/(B)=1/2~10/1であり、
成分(A)、(B)及び(C)の重量割合が、((A)+(B)/(C)=2/1~30/1であるのが好ましい。
(A)高級脂肪酸又はその塩 1~30重量%、
(B)ポリオキシエチレンアルキルエーテルカルボン酸又はその塩 0.5~10重量%、
(C)IOBが0.25~1.2であるポリオキシエチレンアルキルエーテル、脂肪酸ポリオキシエチレンソルビタン、ポリオキシエチレン硬化ヒマシ油及び(ジ)グリセリンモノアルキルエーテルから選ばれる両親媒性物質 0.1~10重量%、
(D)平均粒子径50~500μmの水不溶性造粒粉体 1~25重量%
を含有し、成分(A)及び(B)の重量割合が、(A)/(B)=1/2~10/1であり、
成分(A)、(B)及び(C)の重量割合が、((A)+(B))/(C)=2/1~30/1であるのが好ましい。
(A)高級脂肪酸又はその塩 1~30重量%、
(B)ポリオキシエチレンアルキルエーテルカルボン酸又はその塩 0.5~10重量%、
(C)IOBが0.25~1.2であるポリオキシエチレンアルキルエーテル、脂肪酸ポリオキシエチレンソルビタン、ポリオキシエチレン硬化ヒマシ油及び(ジ)グリセリンモノアルキルエーテルから選ばれる両親媒性物質 0.1~10重量%、
(D)平均粒子径50~130μm、及び平均粒子径240~500μmの水不溶性粒子 1~25重量%
を含有し、
(平均粒子径240~500μm)/(平均粒子径50~130μm)が、1/2~1/12であり、
成分(A)及び(B)の重量割合が、(A)/(B)=1/2~10/1であり、
成分(A)、(B)及び(C)の重量割合が、((A)+(B))/(C)=2/1~30/1であるのが好ましい。
成分(A)の含有量は、全組成物中に1~25重量%であるのが好ましく、更には2~20重量%であるのが好ましい。
成分(B)の含有量は、全組成物中に1~8重量%であるのが好ましく、更には2~7重量%であるのが好ましい。
成分(C)の含有量は、全組成物中0.2~8重量%であるのが好ましく、更には0.3~5重量%であるのが好ましい。
成分(D)の含有量は、全組成物中に1~25重量%であり、更には2~15重量%であるのが好ましい。
成分(E)の含有量は、全組成物中に0.05~1.5重量%であるのが好ましく、更には0.2~1.2重量%が好ましく、より好ましくは0.4~0.9重量%である。
また、成分(A)及び(B)の重量割合は、(A)/(B)=1/2~10/1、好ましくは1/2~7/1である。
また、成分(A)、(B)及び(C)の重量割合は、((A)+(B))/(C)=2/1~30/1、更に2.5/1~10/1であるのが好ましい。
(A)高級脂肪酸又はその塩 1~25重量%、
(B)ポリオキシエチレンアルキルエーテルカルボン酸又はその塩 1~8重量%、
(C)IOBが0.25~1.2の両親媒性物質 0.2~8重量%、
(D)平均粒子径50~500μmの水不溶性粒子 2~15重量%
を含有し、成分(A)及び(B)の重量割合が、(A)/(B)=1/2~7/1であり、
成分(A)、(B)及び(C)の重量割合が、((A)+(B))/(C)=2.5/1~10/1であるのが好ましい。
(A)高級脂肪酸又はその塩 1~30重量%、
(B)ポリオキシエチレンアルキルエーテルカルボン酸又はその塩 0.5~10重量%、
(C)IOBが0.25~1.2の両親媒性物質 0.1~10重量%、
(D)平均粒子径50~130μm、及び平均粒子径240~500μmの水不溶性造粒粉体 1~25重量%、
(E)高分子増粘剤 0.2~1.2重量%
を含有し、
成分(D)が、(平均粒子径240~500μm)/(平均粒子径50~130μm)=1/2~1/12であり、
成分(A)及び(B)の重量割合が、(A)/(B)=1/2~7/1であり、
成分(A)、(B)及び(C)の重量割合が、((A)+(B))/(C)=2.5/1~10/1であるのが好ましい。
表1~表4に示す組成の皮膚洗浄剤を製造し、泡立ち、泡の感触、泡の嵩高さ、水不溶性粒子の粒感、洗浄効果、洗浄実感、すすぎ性及び室温安定性を評価した。結果を表1~表4に併せて示す。
(1)実施例1~14、18、22、26、比較例1および3~9については、70℃以上に加熱した精製水約60重量%に、成分(A)及び(B)を添加して完全に溶解させた。次に成分(A)及び(B)を中和する量の水酸化カリウムを添加し、均一になるまで攪拌した。更に成分(C)を添加し、攪拌して均一な溶液とした。この後、これを室温まで冷却した。この溶液に、残部の水とソルビトールとの混合液に成分(D)を分散させた液を添加し、成分(D)が均一に分散するまで攪拌し、目的とする皮膚洗浄剤を得た。
(1)泡立ち:
専門パネリスト5名に各皮膚洗浄剤を実際に使用してもらい、手で泡立てるときの泡立ちについて、(I)に示す5段階評価基準で官能評価させ、それぞれの評点の平均値を求めた。
(I)5段階評価基準;
5;泡立ちが良い。
4;泡立ちがやや良い。
3;どちらともいえない。
2;泡立ちがあまり良くない。
1;泡立ちが良くない。
専門パネリスト5名に各皮膚洗浄剤を実際に使用してもらい、手で泡立てた泡で顔をマッサージする時の泡のやわらかさについて、(II)に示す5段階評価基準で官能評価させ、それぞれの評点の平均値を求めた。
(II)5段階評価基準;
5;泡がやわらかい。
4;泡がやややわらかい。
3;どちらともいえない。
2;泡があまりやわらかくない。
1;泡がやわらかくない。
専門パネリスト5名に各皮膚洗浄剤を実際に使用してもらい、手のひらで30往復させてできた泡の嵩高さついて、(III)に示す5段階評価基準で官能評価させ、それぞれの評点の平均値を求めた。
(III)5段階評価基準;
5;空気を多く含んだ泡(バブリー)。
4;空気をやや多く含んだ泡。
3;空気を含んだ泡。
2;あまり空気を含んでない泡。
1;空気を含んでない泡(クリーミィー)。
専門パネリスト5名により、各皮膚洗浄剤1gを手に取り、少量の水を加えて手で10回擦り合わせて泡立てる。その後、片方の手のひらをもう片方の手の甲に押し当て、その時の水不溶性粒子の粒感について、(IV)に示す5段階評価基準で官能評価させ、それぞれの評点の平均値を求めた。
同様に、30回擦り合わせて泡立てた場合についても評価し、(IV)に示す5段階評価基準で官能評価させ、それぞれの評点の平均値を求めた。
(IV)5段階評価基準;
5;はっきりと粒が感じる。
4;粒が感じられる。
3;少し粒が感じられる。
2;あまり粒が感じられない。
1;まったく粒が感じられない。
人前腕内側部7cm2の円を描き、色彩色差計(ミノルタ社製、CR-200)を用いて測色する(基準色)。20μLのカーボンブラックで黒色に着色したモデルコメド皮脂(表5)を塗布し、30分間放置した後、ステンレス製スパーテルを用いて、表面の余分なモデルコメド皮脂を取り除く。このとき、色差(ΔE1)を測定し、その値が20~25の範囲であることを確認する。(この範囲を超えていた場合は、再びスパーテルを用い、ΔE1値が20~25となるまで余分なモデルコメド皮脂を取り除く。)各皮膚洗浄剤1gを手のひらで30往復させて泡立てた泡を0.5g用い、30回マッサージして洗浄した後、水道水で洗い流した。洗浄後に再び基準色との色差を測色し(ΔE2)、下記式により、洗浄力を求める。各皮膚洗浄剤について5回繰り返し、その平均値を求めた。
専門パネリスト5名により、各皮膚洗浄剤1gを手に取り、少量の水を加えて泡立てて洗顔した後に水道水ですすぐ。タオルドライ後、洗浄実感について、(V)に示す5段階評価基準で官能評価させ、それぞれの評点の平均値を求めた。
(V)5段階評価基準;
5;非常に汚れが落ちた感じがする。
4;汚れが落ちた感じがする。
3;少し汚れが落ちた感じがする。
2;あまり汚れが落ちた感じがしない。
1;まったく汚れが落ちた感じがしない。
専門パネリスト5名により、各皮膚洗浄剤1gを手に取り、少量の水を加えて泡立てて洗顔した後に水道水ですすぐ。そのときのすすぎ性について、(VI)に示す5段階評価基準で官能評価させ、それぞれの評点の平均値を求めた。
(VI)5段階評価基準;
5;すすぎやすい。
4;ややすすぎやすい。
3;どちらともいえない。
2;あまりすすぎやすくない。
1;すすぎやすくない。
各皮膚洗浄剤を容量130mLのガラス瓶に100g入れ、室温で1日間放置させた後、皮膚洗浄剤中の水不溶性粒子の浮遊(もしくは沈降)状態について、(VII)に示す3段階評価基準で目視観察し、評点とした。
(VII)3段階評価基準;
○;水不溶性粒子が均一に分散している。
△;水不溶性粒子が不均一であるが、容易に均一に再分散することができる。
×;水不溶性粒子が不均一であり、再分散することができない。
以下に示す組成の皮膚洗浄剤を配合組成に従い、実施例1~28の製造方法(3)と同様にして、製造した。
得られた皮膚洗浄剤について、上記評価をおこなったところ、いずれも優れた結果が得られた。
(1)ラウリン酸*1 7.0(重量%)
(2)ミリスチン酸*2 2.4
(3)パルミチン酸*3 0.6
(4)ラウレス-4カルボン酸Na*7 4.0
(5)水酸化カリウム 2.9
(6)グリセリンモノ2-エチルヘキシルエーテル*19(IOB=1.05、Mw=204)
2.5
(7)2-オクチルドデカノール*17(IOB=0.26、Mw=298)
1.0
(8)Inducos14/2(平均粒径400μm)*23
2.0
(9)TexPure 400E(平均粒径55μm)*21
10.0
(10)アクリル酸・メタクリル酸アルキル共重合体*27
0.6
(11)ラウリルヒドロキシスルタイン*28 3.0
(12)ソルビトール*29 14.0
(13)精製水 バランス
合計 100.0
以下に示す組成の皮膚洗浄剤を配合組成に従い、実施例1~28の製造方法(2)と同様にして、製造した。
得られた皮膚洗浄剤について、上記評価をおこなったところ、いずれも優れた結果が得られた。
(1)ラウリン酸*1 4.0(重量%)
(2)ミリスチン酸*2 1.5
(3)パルミチン酸*3 0.3
(4)ラウレス-6カルボン酸*6 1.8
(5)水酸化カリウム 2.2
(6)モノカプリン酸グリセリン*18(IOB=1.18、Mw=246)
1.0
(7)崩壊性粒子(平均粒径500μm)*20 5.0
(7)アクリル酸・メタクリル酸アルキル共重合体*27 0.6
(8)ラウリルヒドロキシスルタイン*28 1.5
(9)ソルビトール*29 12.0
(10)精製水 バランス
合計 100.0
Claims (9)
- 次の成分(A)~(D):
(A)高級脂肪酸又はその塩 1~30重量%、
(B)ポリオキシエチレンアルキルエーテルカルボン酸又はその塩 0.5~10重量%、
(C)IOBが0.25~1.2の両親媒性物質 0.1~10重量%、
(D)平均粒径50~500μmの水不溶性粒子 1~25重量%
を含有し、成分(A)及び(B)の重量割合が、(A)/(B)=1/2~10/1である皮膚洗浄剤。 - 成分(A)、(B)及び(C)の重量割合が、((A)+(B))/(C)=2/1~30/1である請求項1記載の皮膚洗浄剤。
- 成分(C)のIOBが0.25~1.2で、分子量が500以下の両親媒性物質である請求項1又は2記載の皮膚洗浄剤。
- 成分(C)が、IOB0.25~1.2であるポリオキシエチレンアルキルエーテル、脂肪酸ポリオキシエチレンソルビタン、ポリオキシエチレン硬化ヒマシ油及び(ジ)グリセリンモノアルキルエーテルから選ばれる1種又は2種以上の両親媒性物質である請求項3記載の皮膚洗浄剤。
- 成分(C)が、IOB0.25~1.2の分岐脂肪酸から選ばれる両親媒性物質である請求項3記載の皮膚洗浄剤。
- 成分(C)が、IOB0.25~1.2の分岐高級アルコールから選ばれる両親媒性物質である請求項3記載の皮膚洗浄剤。
- 成分(D)の水不溶性粒子が、平均粒子径50~130μm、及び平均粒子径240~500μmの水不溶性粒子を含むものである請求項1~6のいずれか1項記載の皮膚洗浄剤。
- 成分(D)の水不溶性粒子が、水不溶性造粒粉体である請求項1~7のいずれか1項記載の皮膚洗浄剤。
- 更に、(E)高分子増粘剤 0.05~1.5重量%を含有する請求項1~8のいずれか1項記載の皮膚洗浄剤。
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Also Published As
Publication number | Publication date |
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US8815787B2 (en) | 2014-08-26 |
TWI481421B (zh) | 2015-04-21 |
EP2510917A4 (en) | 2015-10-14 |
JP2011140485A (ja) | 2011-07-21 |
EP2510917A1 (en) | 2012-10-17 |
CN102647975B (zh) | 2014-07-30 |
JP5562820B2 (ja) | 2014-07-30 |
CN102647975A (zh) | 2012-08-22 |
US20120277137A1 (en) | 2012-11-01 |
EP2510917B1 (en) | 2017-04-19 |
TW201127416A (en) | 2011-08-16 |
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