WO2016117153A1 - スクラブ剤およびその使用方法 - Google Patents
スクラブ剤およびその使用方法 Download PDFInfo
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- WO2016117153A1 WO2016117153A1 PCT/JP2015/071937 JP2015071937W WO2016117153A1 WO 2016117153 A1 WO2016117153 A1 WO 2016117153A1 JP 2015071937 W JP2015071937 W JP 2015071937W WO 2016117153 A1 WO2016117153 A1 WO 2016117153A1
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- activated carbon
- scrub agent
- scrub
- beaker
- sample
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
- A61Q19/10—Washing or bathing preparations
-
- 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
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/06—Powder; Flakes; Free-flowing mixtures; Sheets
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0241—Containing particulates characterized by their shape and/or structure
- A61K8/025—Explicitly spheroidal or spherical shape
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
- A61K8/0241—Containing particulates characterized by their shape and/or structure
- A61K8/0279—Porous; Hollow
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K8/00—Cosmetics or similar toiletry preparations
- A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
- A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
- A61Q19/00—Preparations for care of the skin
-
- 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
- C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
- C11D7/02—Inorganic compounds
-
- 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
- A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
- A61K2800/30—Characterized by the absence of a particular group of ingredients
- A61K2800/33—Free of surfactant
-
- 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
Definitions
- the present invention relates to a scrub agent and a method for using the scrub agent.
- the prior patent document 1 discloses a skin cleanser containing activated carbon made from coconut shell as a raw material.
- the conventional technique has the following problems. That is, microbeads frequently used as a scrub agent are fine and float on water. Therefore, the microbeads are released into the natural environment such as rivers, lakes, and seas through the discharge of the treated liquid without being captured in the sewage sludge at the sewage treatment facility. Microbeads released into the natural environment adsorb various chemical pollutants present in the environment. Microbeads that adsorb chemical contaminants are mistaken for food by aquatic organisms and are taken into the body of aquatic organisms. In this way, there is a problem that microbeads tend to enter the food chain. Further, when activated carbon made from coconut shell or the like is used as a scrub agent, the surface unevenness is large and not spherical, so that necessary skin cells may be removed.
- the present invention has been made in view of the above background, and is intended to provide a scrub agent that easily removes old skin cells and does not easily enter the food chain, and a method for using the scrub agent.
- One embodiment of the present invention is spherical and has a median diameter in the range of 100 to 800 ⁇ m, a peak pore diameter in the range of 0.7 nm to 1.2 nm, and a micropore pore volume of 0.5 cm 3.
- Has activated carbon that is greater than / g The activated carbon is in a scrub agent that satisfies the following condition (1).
- Condition (1) 1 g of the activated carbon sample was sprayed on the surface of a beaker in which 100 g of pure water having a temperature of 20 ° C.
- Another aspect of the present invention resides in a method of using a scrub agent, comprising the step of using the scrub agent and rotating the activated carbon of the scrub agent on the skin surface.
- the scrub agent has activated carbon having a spherical shape and a particle size in a specific range. Therefore, the old skin cells can be removed relatively easily by rotating the activated carbon of the scrub agent on the skin surface. At this time, since the activated carbon is spherical, it is possible to suppress excessive removal of skin cells.
- the peak pore diameter of the activated carbon is in the range of 0.7 nm to 1.2 nm, and the micropore pore volume of the activated carbon is 0.5 cm 3 / g or more. Therefore, the scrub agent is excellent not only in scrub function but also in sebum adsorption ability. Therefore, according to the scrub agent, sebum can be removed by adsorption while removing old skin cells.
- activated carbon satisfies a specific condition (1). Therefore, when the scrubbing agent is poured into sewage together with water, the activated carbon enters the sewage sludge not by the treated liquid (supernatant liquid) but by precipitation in the sewage treatment facility. Therefore, according to the scrub agent, the activated carbon having a scrub function can be suppressed from being released into the natural environment through the discharge of the treated liquid into rivers, lakes, seas, and the like. Therefore, the scrub agent is difficult to enter the food chain.
- the method of using the scrub agent includes a procedure for rotating the activated carbon of the scrub agent on the skin surface. Therefore, according to the method of using the scrub agent, old skin cells can be removed relatively easily with the activated carbon. It is also possible to remove sebum by adsorption while removing old skin cells. Moreover, even when the scrub agent is flushed into the sewage with the water after use, the activated carbon is trapped in the sewage sludge by precipitation in the sewage treatment facility and is not easily released into the natural environment as described above. Therefore, according to the method of using the scrub agent, it is difficult for the scrub agent to enter the food chain, and skin care that is gentle to the natural environment can be performed.
- FIG. 3 is an explanatory view schematically showing the scrub agent of Example 1.
- 4 is an explanatory view schematically showing a scrub agent of Example 2.
- FIG. It is a differential pore volume distribution of each activated carbon and carbide C in an experimental example. It is a photograph which shows the state of each sample bottle after shaking observed in the adsorption test of oleic acid in an experiment example.
- the activated carbon has a spherical shape.
- the spherical shape means not only a true sphere but also a shape equivalent to a sphere, that is, a shape similar to a sphere.
- the provision that the activated carbon is spherical has the significance that the activated carbon rolls smoothly on the skin surface to remove old skin cells by scrubbing and make it difficult to damage the necessary skin cells.
- the activated carbon has a median diameter in the range of 100 to 800 ⁇ m.
- the particle diameter of the activated carbon is less than 100 ⁇ m in terms of median diameter, activated carbon that enters a human pore increases, and the activated carbon may not be smoothly rolled on the skin surface. As a result, the feeling of use of the scrub agent becomes poor.
- the particle diameter of the activated carbon is a median diameter, preferably 110 ⁇ m or more, more preferably 120 ⁇ m or more, further preferably 150 ⁇ m or more, even more preferably 180 ⁇ m or more, and even more preferably.
- the particle diameter of the activated carbon can be 200 ⁇ m or more.
- the particle diameter of the activated carbon is a median diameter, preferably 750 ⁇ m or less, more preferably 700 ⁇ m or less, further preferably 650 ⁇ m or less, even more preferably 600 ⁇ m or less, and even more preferably. It can be 550 ⁇ m or less, and most preferably 500 ⁇ m or less.
- the median diameter of the activated carbon is the particle diameter (diameter) when the volume-based cumulative frequency distribution measured by a laser diffraction / scattering particle size distribution analyzer (Horiba, Ltd., “LA-700”) shows 50%. d50 is referred to.
- the particle size distribution measuring apparatus which can perform a measurement equivalent to this is used.
- the activated carbon satisfies the following condition (1).
- Condition (1) 1 g of activated carbon sample is sprayed on the surface of a beaker in which 100 g of pure water at a temperature of 20 ° C. is placed at a depth of 5 cm, and the beaker is placed in a vacuum desiccator and vacuumed for 20 minutes using a vacuum pump. After pulling, the pure water in the beaker is stirred for 1 minute at a rotation speed of 100 rpm using a stirrer, and when the beaker is allowed to stand for 30 minutes, 95% by mass or more of the sample is precipitated on the bottom of the beaker.
- the fact that the activated carbon satisfies the condition (1) has a meaning that the activated carbon is recovered in the sewage sludge in the sewage treatment facility when most of the activated carbon contained in the scrubbing agent sinks in water.
- activated carbon having a specific gravity smaller than 1 even activated carbon having a specific gravity larger than 1 may float in water if there are many closed pores in the particles of the activated carbon. Therefore, it cannot be accurately determined whether or not most of the activated carbon contained in the scrub agent is submerged in water depending on the specific gravity.
- activated carbon satisfying the condition (1) sinks most of the activated carbon particles in water, so even if the pores opening on the surface of the activated carbon are filled with air, By stirring or the like in the sewage treatment facility, air escapes from the pores, sinks into the water, and is recovered in the sewage sludge.
- condition (1) the activated carbon sample is sprayed on the water surface of the beaker, and the beaker is placed in a vacuum desiccator and evacuated using a vacuum pump. Therefore, the air that has entered the pores in the activated carbon of the sample is surely degassed. That is, it is possible to accurately determine whether most of the activated carbon that the scrub agent has submerged in water in a state where the influence of air that has entered the pores is removed.
- the ultimate pressure is 10 to 50 Pa.
- activated carbon floating in water may be contained without being precipitated at the bottom of the beaker.
- the peak pore diameter of the activated carbon is the pore diameter when the differential pore volume distribution of the activated carbon shows the maximum value.
- the peak pore diameter of the activated carbon is preferably 0.75 nm or more, more preferably 0.8 nm or more, still more preferably 0.85 nm or more, and even more preferably 0.9 nm or more, from the viewpoint of improving sebum adsorption ability. It can be. From the viewpoint of ensuring the mechanical strength of the activated carbon, the peak pore diameter of the activated carbon is preferably 1.18 nm or less, more preferably 1.15 nm or less, and even more preferably 1.13 nm or less.
- the differential pore volume distribution and the micropore pore volume of the activated carbon are maintained under the condition that the pretreatment device (Nippon Bell, “BELSORP-VACII”) is maintained at 300 ° C. and 10 ⁇ 2 kPa or less for 2 hours.
- the pretreatment device Nippon Bell, “BELSORP-VACII”
- an automatic specific surface area / pore distribution measuring device (“BELSORP-miniII” manufactured by Nippon Bell Co., Ltd.) is used to represent the change between the pressure at a constant temperature (77 K) and the adsorption amount of nitrogen gas. It is obtained by creating an adsorption isotherm and calculating by the MP method.
- the specific surface area of the activated carbon can be 1000 m 2 / g or more.
- a scrub agent excellent not only in scrub function but also in sebum adsorption ability can be obtained. Therefore, according to this scrubbing agent, sebum can be removed by adsorption while removing old skin cells.
- the specific surface area of the activated carbon from the viewpoint of improving the sebum adsorption capacity, preferably 1100 m 2 / g or more, more preferably 1200 m 2 / g or more, more preferably 1300 m 2 / g or more, still more preferably 1400 m 2 / g or more. From the viewpoint of increasing the sebum adsorption site, the larger the specific surface area of the activated carbon, the better. However, if the specific surface area of the activated carbon is excessively increased, the yield of the activated carbon is lowered and the economic efficiency is deteriorated. Moreover, the mechanical strength of activated carbon also tends to decrease. Therefore, the specific surface area of the activated carbon is preferably 2400 m 2 / g or less.
- the specific surface area of the activated carbon was determined by using a pretreatment device (“BELSORP-VACII” manufactured by Nippon Bell Co., Ltd.) under conditions of holding at 300 ° C. and 10 ⁇ 2 kPa or less for 2 hours.
- a surface area / pore distribution measuring device (“BELSORP-miniII” manufactured by Nippon Bell Co., Ltd.)
- an adsorption isotherm representing the change in pressure and nitrogen gas adsorption amount under a constant temperature (77K) was created. It is obtained by calculating according to the BET method.
- an automatic specific surface area / pore distribution measuring device becomes unavailable, an automatic specific surface area / pore distribution measuring device capable of performing the same measurement is used.
- the scrub agent can be configured not to contain a surfactant.
- the surfactant is easily adsorbed on the pores of the activated carbon. Therefore, when the surfactant is excessively contained, the pores of the activated carbon are occupied by the surfactant, and the sebum adsorption ability of the activated carbon may be reduced correspondingly.
- the scrub agent does not contain a surfactant, when the scrub agent is used alone, the sebum adsorption ability of the activated carbon is not hindered. It becomes easy to show.
- surfactant mentioned above means what has a role which emulsifies human sebum and dissolves in water. Examples of this type of surfactant include sodium lauryl sulfate and PEG-20 glyceryl oleate.
- the scrub agent can be composed of, for example, activated carbon alone. In this case, it is easy to maximize the scrub function for removing old skin cells and the sebum adsorption function provided in the activated carbon.
- the scrub agent may have a base for dispersing the activated carbon in addition to the activated carbon.
- the base may be a liquid or a semi-solid such as a paste. Specific examples of the base include water, carboxymethyl cellulose gel, and those applied to ordinary skin care products.
- the base those not containing a surfactant can be preferably used. In this case, it is easy to maximize the scrub function for removing old skin cells and the sebum adsorption function provided in the activated carbon.
- an aqueous scrubbing agent with less irritation to the skin by the base and less impact on the natural environment can be obtained.
- the scrub agent can be produced, for example, as follows.
- Spherical carbide powder is obtained by carbonizing spherical resin raw material powder in a carbonization furnace.
- the spherical resin raw material powder for example, a spherical phenol resin powder or the like can be used.
- the median diameter d50 of the spherical resin raw material powder can be about 140 to 1100 ⁇ m.
- carbonization conditions the conditions of hold
- the obtained carbide powder is activated in an activation furnace.
- the activation condition for example, a condition in which water vapor is allowed to flow into the furnace and maintained at a temperature of 850 ° C. for 5 to 24 hours can be exemplified.
- the activated carbon obtained by the activation treatment can be classified so as to have a predetermined particle diameter, if necessary. Thereby, the activated carbon powder applicable to the said scrub agent is obtained.
- the method of using the scrub agent includes a procedure of rotating activated carbon included in the scrub agent on the skin surface.
- the scrub agent may be used by bringing a scrub agent placed on the palm into contact with a predetermined skin surface, holding activated carbon between the palm and the predetermined skin surface, and holding the hand in this state. By moving, the activated carbon can be rolled on the skin surface.
- Example 1 The scrub agent of Example 1 will be described with reference to FIG. As shown in FIG. 1, the scrub agent 1 of this example has activated carbon 10. In this example, the scrub agent 1 is composed of activated carbon 10 alone.
- the activated carbon 10 is spherical and has a median diameter in the range of 100 to 800 ⁇ m.
- the peak pore diameter of the activated carbon 10 is in the range of 0.7 nm to 1.2 nm, and the micropore pore volume of the activated carbon 10 is 0.5 cm 3 / g or more.
- the activated carbon 10 satisfies the following condition (1).
- Condition (1) 1 g of activated carbon 10 sample is sprayed on the surface of a beaker in which 100 g of pure water having a temperature of 20 ° C. is placed at a depth of 5 cm, and the beaker is placed in a vacuum desiccator for 20 minutes using a vacuum pump.
- the specific surface area of the activated carbon 10 is 1000 m 2 / g or more.
- the scrubbing agent 1 of this example has activated carbon 10 having a spherical shape and a particle size within a specific range. Therefore, by rotating the activated carbon 10 included in the scrubbing agent 1 of this example on the skin surface, old skin cells are removed relatively easily. At this time, since the activated carbon 10 has a spherical shape, excessive removal of skin cells can be suppressed.
- the activated carbon 10 satisfies the specific condition (1). Therefore, when the scrub agent 1 of this example is poured into sewage together with water, the activated carbon 10 enters the sewage sludge not by the treated liquid (supernatant liquid) but by precipitation in the sewage treatment facility. Therefore, according to the scrubbing agent 1 of this example, the activated carbon 10 having a scrub function can be prevented from being released into the natural environment through the discharge of the treated liquid into a river, a lake, the sea, or the like. Therefore, the scrub agent 1 of this example is difficult to enter the food chain.
- the scrub agent 1 of this example has the peak pore diameter, micropore pore volume, and specific surface area of the activated carbon 10 within the above-described ranges. Therefore, the scrub agent 1 of this example is excellent not only in the scrub function but also in the sebum adsorption ability.
- the scrub agent 1 of this example is composed of activated carbon 10 alone. Therefore, the scrubbing agent 1 of this example can easily exert the scrub function for removing old skin cells and the sebum adsorbing function provided in the activated carbon 10. Moreover, in this example, the powdery scrub agent 1 is obtained.
- Example 2 The scrub agent of Example 2 will be described with reference to FIG.
- the scrub agent 1 of this example is different from the scrub agent 1 of Example 1 in that it has activated carbon 10 and a base 11 for dispersing the activated carbon 10.
- the base 11 is specifically water.
- Other configurations are the same as those of the first embodiment.
- the scrub agent 1 of this example is easy to remove old skin cells and hardly enters the food chain. Moreover, not only the scrub function but also the sebum adsorption ability is excellent.
- the scrub agent 1 of this example has a base 11 for dispersing the activated carbon 10 in addition to the activated carbon 10. Therefore, in the scrub agent 1 of this example, the activated carbon 10 is easily held in the hand by the base 11 when the scrub agent 1 is placed on the hand. Therefore, the scrub agent 1 of this example is advantageous for improving the handleability and the feeling of use. Moreover, in this example, since the base 11 is water, the water-type scrub agent 1 with little irritation
- Spherical phenol resin powder having a median particle size of 250 ⁇ m is heated to 850 ° C. at a temperature rising rate of 3 ° C./min in a carbonization furnace of an activated carbon manufacturing apparatus (manufactured by MTE) under a nitrogen atmosphere. The temperature was raised and held for 30 minutes for carbonization to obtain a spherical carbide powder. Next, the obtained spherical carbide powder was heated to 850 ° C. at a temperature rising rate of 3 ° C./min in the activation furnace of the activated carbon production apparatus, and then 12 g / min of water vapor was allowed to flow for 5 hours.
- Activation treatment was performed by holding for 10 hours or 24 hours.
- spherical activated carbon powders AC3, AC2, and AC1 having yields of 31.1%, 25%, and 7%, respectively, corresponding to the holding time were obtained.
- the said yield is a ratio (%) of the mass of the obtained activated carbon with respect to the mass of the raw material in an absolutely dry state.
- cedar carbide BC ⁇ Production of cedar carbide BC>
- the cedar crushed material was dried at 120 ° C. until the water content became 12% by mass or less.
- the dried cedar pulverized product was pelletized using a biomass pellet manufacturing apparatus ("EF-BS-150" manufactured by Earth Engineering Co., Ltd.) to obtain cedar pellets.
- the obtained cedar pellets were carbonized in the carbonization furnace of the activated carbon production apparatus by raising the temperature to 850 ° C. at a temperature increase rate of 3 ° C./min and holding for 30 minutes in a nitrogen atmosphere.
- the obtained cedar carbide was pulverized in a mortar to obtain non-spherical and granular cedar carbide BC.
- the median diameter d50 of each activated carbon, carbide C, and cedar carbide BC was measured using a laser diffraction / scattering particle size distribution measuring apparatus (“LA-700” manufactured by Horiba, Ltd.). Moreover, the particle diameter (diameter) d90 when the volume-based cumulative frequency distribution shows 90% was also measured.
- a beaker in which 100 g of pure water having a temperature of 20 ° C. was placed at a water depth of 5 cm was prepared.
- 1 g of the activated carbon sample to be measured was sprayed on the water surface of the beaker and placed in a 9 L vacuum desiccator.
- the air in the pores of the activated carbon floating on the water surface was degassed by evacuating for 20 minutes using a vacuum pump (“DA-5S” manufactured by ULVAC Kiko Co., Ltd.). The ultimate pressure was 33.3 Pa.
- the beaker was taken out from the vacuum desiccator.
- each activated carbon and carbide C was subjected to pretreatment using a pretreatment apparatus (“BELSORP-VACII” manufactured by Nippon Bell Co., Ltd.) at 300 ° C. and 10 ⁇ 2 kPa or less for 2 hours. Then, using an automatic specific surface area / pore distribution measuring device (“BELSORP-miniII”, manufactured by Bell Japan Co., Ltd.), an adsorption isotherm representing the change in pressure and the amount of nitrogen gas adsorbed at a constant temperature (77K) is created. did. Thereafter, the differential pore volume distribution and the micropore pore volume were determined by the MP method.
- FIG. 3 shows the differential pore volume distribution of each activated carbon and carbide C. Cedar carbide BC was incapable of analysis because it had almost no micropores.
- Each activated carbon, carbide C, and cedar carbide BC are pretreated using a pretreatment device (“BELSORP-VACII” manufactured by Nippon Bell Co., Ltd.) at 300 ° C. and 10 ⁇ 2 kPa or less for 2 hours. did. Then, using an automatic specific surface area / pore distribution measuring device (“BELSORP-miniII”, manufactured by Bell Japan Co., Ltd.), an adsorption isotherm representing the change in pressure and the amount of nitrogen gas adsorbed at a constant temperature (77K) is created. did. Then, the specific surface area was calculated
- Activated carbon AC1 was used as a scrub agent for Sample 1.
- Activated carbon AC2 was used as a scrub agent for Sample 2.
- Activated carbon AC3 was used as a scrub agent for Sample 3.
- Carbide C was used as a scrub agent for Sample 4.
- Cedar carbide BC was used as a scrub agent for Sample 5. Note that the scrubbing agents of Sample 4 and Sample 5 are reference examples.
- aqueous solution containing 1000 ppm of oleic acid in a mass ratio was prepared and sufficiently stirred.
- the above aqueous solution: 50 g and the sample scrubbing agent: absolute dry weight 1 g were put in this order in a sample bottle and sealed.
- a shaker TACITEC, “RECIPRO SHAKER NR-1”
- the sample bottle was shaken. Subsequently, the transparency of the sample bottle after shaking was confirmed visually.
- FIG. 4 shows the state of each sample bottle after shaking.
- the liquid in the sample bottle was filtered, the scrubbing agent of the sample was taken out, allowed to stand at a temperature of 25 ° C. for 1 day, and dried.
- the scrubbing agent of the sample after drying was analyzed using a thermogravimetric analyzer (manufactured by RIGAKU, “THERMO PLUS TG8120”). The analysis conditions at this time were such that the temperature was maintained at 105 ° C. for 2 hours in a nitrogen atmosphere, and thereafter heated to 650 ° C.
- the scrub agents of Samples 1 to 3 have activated carbon having a spherical shape and a particle size within a specific range. Further, the scrub agents of Sample 1 to Sample 3 have a higher oleic acid adsorption rate than the scrub agents of Sample 4 and Sample 5. Therefore, it can be said that the scrub agents of Samples 1 to 3 can remove sebum by adsorption while removing old skin cells by the scrub function of activated carbon. As shown in FIG. 4, the sample bottle containing the scrub agent of Sample 1 was transparent, and the sample bottle containing the scrub agent of Sample 3 was almost transparent although a slight cloudiness was observed. there were.
- activated carbon satisfies the condition (1) for the scrub agents of Sample 1 to Sample 3. Therefore, when each scrub agent is poured into sewage together with water, each activated carbon can enter the sewage sludge not by the treated liquid (supernatant liquid) but by precipitation in the sewage treatment facility. Therefore, the scrub agent can suppress the activated carbon having a scrub function from being released into the natural environment through the discharge of the treated liquid into rivers, lakes, seas and the like. Therefore, it can be said that the scrub agent is difficult to enter the food chain.
- the microbead conventionally used as a scrub agent is clear to float on water, it is clear that the condition (1) is not satisfied. It is also clear that the microbeads themselves have no sebum adsorption capacity.
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Abstract
Description
該活性炭は、下記条件(1)を満たしている、スクラブ剤にある。
条件(1):温度20℃の純水100gが水深5cmで入れられたビーカーの水面上に上記活性炭の試料1gを散布し、上記ビーカーを真空デシケーター内に載置して真空ポンプを用いて20分間真空引きした後、上記ビーカー内の純水を撹拌子を用いて回転数100rpmで1分間撹拌し、そのまま上記ビーカーを30分間静置した場合に、上記試料の95質量%以上が上記ビーカーの底に沈殿する。
条件(1):温度20℃の純水100gが水深5cmで入れられたビーカーの水面上に活性炭の試料1gを散布し、ビーカーを真空デシケーター内に載置して真空ポンプを用いて20分間真空引きした後、ビーカー内の純水を撹拌子を用いて回転数100rpmで1分間撹拌し、そのままビーカーを30分間静置した場合に、試料の95質量%以上がビーカーの底に沈殿する。
実施例1のスクラブ剤について、図1を用いて説明する。図1に示されるように、本例のスクラブ剤1は、活性炭10を有している。本例では、スクラブ剤1は、活性炭10単体より構成される。
条件(1):温度20℃の純水100gが水深5cmで入れられたビーカーの水面上に活性炭10の試料1gを散布し、ビーカーを真空デシケーター内に載置して真空ポンプを用いて20分間真空引きした後、ビーカー内の純水を撹拌子を用いて回転数100rpmで1分間撹拌し、そのままビーカーを30分間静置した場合に、試料の95質量%以上がビーカーの底に沈殿する。
実施例2のスクラブ剤について、図2を用いて説明する。本例のスクラブ剤1は、活性炭10と、活性炭10を分散させるためのベース11とを有している点で、実施例1のスクラブ剤1と異なっている。本例では、ベース11は、具体的には、水である。その他の構成は、実施例1と同様である。
以下、実験例を用いてより具体的に説明する。
粒径がメジアン径で250μmである球状のフェノール樹脂粉末を、活性炭製造装置(エム・イー・ティー社製)の炭化炉内で、窒素雰囲気下、昇温速度3℃/分にて850℃まで昇温し、30分間保持することにより、炭化処理し、球状の炭化物粉末を得た。次いで、得られた球状の炭化物粉末を、上記活性炭製造装置の賦活炉内で、昇温速度3℃/分にて850℃まで昇温した後、12g/分の水蒸気を流入させ、5時間、10時間、または、24時間保持することにより、賦活処理した。これにより、上記保持時間に対応して収率がそれぞれ31.1%、25%、7%である球状の活性炭粉末AC3、AC2、AC1を得た。なお、上記収率は、絶乾状態での原料の質量に対する、得られた活性炭の質量の比率(%)のことである。
上記活性炭の作製の途中にて得られた球状の炭化物粉末を炭化物Cとした。
杉破砕物を120℃で含水率12質量%以下になるまで乾燥した。次いで、乾燥された杉粉砕物を、バイオマスペレット製造装置(アースエンジニアリング社製、「EF-BS-150」)を用いて、ペレット化し、杉ペレットを得た。次いで、得られた杉ペレットを、上記活性炭製造装置の炭化炉内で、窒素雰囲気下、昇温速度3℃/分にて850℃まで昇温し、30分間保持することにより、炭化処理した。次いで、得られた杉炭化物を、乳鉢にて粉砕し、非球状で粒状の杉炭化物BCを得た。
レーザー回折・散乱式の粒度分布測定装置(堀場製作所社製、「LA-700」)を用い、各活性炭、炭化物C、杉炭化物BCのメジアン径d50をそれぞれ測定した。また、体積基準の累積度数分布が、90%を示すときの粒子径(直径)d90も併せて測定した。
温度20℃の純水100gが水深5cmで入れられたビーカーを準備した。次いで、このビーカーの水面上に、測定対象の活性炭の試料1gを散布し、9Lの真空デシケーター内に載置した。次いで、真空ポンプ(アルバック機工社製、「DA-5S」)を用いて20分間真空引きすることにより、水面上に浮かぶ活性炭の細孔内の空気を脱気した。なお、到達圧力は、33.3Paとした。次いで、真空解放後、真空デシケーターからビーカーを取り出した。次いで、ビーカー内の純水を撹拌子を用いて回転数100rpmで1分間撹拌し、そのままビーカーを30分間静置した。そして、試料の95質量%以上がビーカーの底に沈殿した場合を、条件(1)を満たすとし、それ以外を条件(1)を満たさないとした。なお、炭化物C、杉炭化物BCは、活性炭ではないため、本確認試験は省略した。
各活性炭、炭化物Cについて、前処理装置(日本ベル社製、「BELSORP-VACII」)を用い、300℃、10-2kPa以下で2時間保持するという条件にて前処理を実施した。そして、自動比表面積/細孔分布測定装置(日本ベル社製、「BELSORP-miniII」)を用い、定温(77K)下での圧力と窒素ガスの吸着量との変化を表す吸着等温線を作成した。その後、MP法により微分細孔容積分布およびミクロ孔細孔容積を求めた。図3に、各活性炭、炭化物Cの微分細孔容積分布を示す。なお、杉炭化物BCは、ミクロ孔細孔がほぼない状態であるため、解析不能であった。
各活性炭、炭化物C、杉炭化物BCについて、前処理装置(日本ベル社製、「BELSORP-VACII」)を用い、300℃、10-2kPa以下で2時間保持するという条件にて前処理を実施した。そして、自動比表面積/細孔分布測定装置(日本ベル社製、「BELSORP-miniII」)を用い、定温(77K)下での圧力と窒素ガスの吸着量との変化を表す吸着等温線を作成した。その後、ISO9277に準拠してBET法により比表面積を求めた。
活性炭AC1を試料1のスクラブ剤とした。活性炭AC2を試料2のスクラブ剤とした。活性炭AC3を試料3のスクラブ剤とした。炭化物Cを試料4のスクラブ剤とした。杉炭化物BCを試料5のスクラブ剤とした。なお、試料4および試料5のスクラブ剤は、参考例である。
試料1~試料5のスクラブ剤について、オレイン酸の吸着率を測定した。なお、オレイン酸は、皮脂を模擬したものである。つまり、本試験により、試料1~試料5のスクラブ剤の皮脂吸着性能を確認することができる。
オレイン酸の吸着率(%)=(600℃のときの重量減少量-105℃のときの重量減少量)×100/(試料のスクラブ剤の絶乾重量)
Claims (6)
- 球状、かつ、粒径がメジアン径で100~800μmの範囲内、ピーク細孔直径が0.7nm~1.2nmの範囲内、ミクロ孔細孔容積が0.5cm3/g以上である活性炭を有しており、
該活性炭は、下記条件(1)を満たしている、スクラブ剤。
条件(1):温度20℃の純水100gが水深5cmで入れられたビーカーの水面上に上記活性炭の試料1gを散布し、上記ビーカーを真空デシケーター内に載置して真空ポンプを用いて20分間真空引きした後、上記ビーカー内の純水を撹拌子を用いて回転数100rpmで1分間撹拌し、そのまま上記ビーカーを30分間静置した場合に、上記試料の95質量%以上が上記ビーカーの底に沈殿する。 - 上記活性炭の比表面積は、1000m2/g以上である、請求項1に記載のスクラブ剤。
- 上記活性炭単体より構成される、請求項1または2に記載のスクラブ剤。
- 上記活性炭を分散させるためのベースを有している、請求項1または2に記載のスクラブ剤。
- 界面活性剤を含んでいない、請求項1~4のいずれか1項に記載のスクラブ剤。
- 請求項1~5のいずれか1項に記載のスクラブ剤を用い、該スクラブ剤が有する上記活性炭を皮膚表面上で回転させる手順を含む、スクラブ剤の使用方法。
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JP2000233916A (ja) * | 1998-12-18 | 2000-08-29 | Futamura Chemical Industries Co Ltd | 球状活性炭及びその製造方法 |
JP2001233722A (ja) | 2000-02-25 | 2001-08-28 | Kanebo Ltd | 化粧料 |
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JP2002212020A (ja) * | 2001-01-19 | 2002-07-31 | Kohjin Co Ltd | スクラブ化粧料 |
JP2006083052A (ja) * | 2004-08-20 | 2006-03-30 | Japan Enviro Chemicals Ltd | 球状活性炭及びその製造法 |
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JP2001233722A (ja) | 2000-02-25 | 2001-08-28 | Kanebo Ltd | 化粧料 |
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JP2006083052A (ja) * | 2004-08-20 | 2006-03-30 | Japan Enviro Chemicals Ltd | 球状活性炭及びその製造法 |
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