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WO2023171641A1 - Éponge antimicrobienne pour produits cosmétiques - Google Patents

Éponge antimicrobienne pour produits cosmétiques Download PDF

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Publication number
WO2023171641A1
WO2023171641A1 PCT/JP2023/008461 JP2023008461W WO2023171641A1 WO 2023171641 A1 WO2023171641 A1 WO 2023171641A1 JP 2023008461 W JP2023008461 W JP 2023008461W WO 2023171641 A1 WO2023171641 A1 WO 2023171641A1
Authority
WO
WIPO (PCT)
Prior art keywords
antibacterial
sponge
cosmetic
oil
essential oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2023/008461
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English (en)
Japanese (ja)
Inventor
宗十 西村
興司 中村
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Taiki Corp Ltd
Original Assignee
Taiki Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Taiki Corp Ltd filed Critical Taiki Corp Ltd
Priority to CN202380025385.4A priority Critical patent/CN118829373A/zh
Priority to KR1020247024392A priority patent/KR20240118182A/ko
Publication of WO2023171641A1 publication Critical patent/WO2023171641A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D34/00—Containers or accessories specially adapted for handling liquid toiletry or cosmetic substances, e.g. perfumes
    • A45D34/04—Appliances specially adapted for applying liquid, e.g. using roller or ball
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D33/00—Containers or accessories specially adapted for handling powdery toiletry or cosmetic substances
    • A45D33/34—Powder-puffs, e.g. with installed container
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
    • C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
    • A—HUMAN NECESSITIES
    • A45—HAND OR TRAVELLING ARTICLES
    • A45D—HAIRDRESSING OR SHAVING EQUIPMENT; EQUIPMENT FOR COSMETICS OR COSMETIC TREATMENTS, e.g. FOR MANICURING OR PEDICURING
    • A45D2200/00—Details not otherwise provided for in A45D
    • A45D2200/10—Details of applicators
    • A45D2200/1009—Applicators comprising a pad, tissue, sponge, or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

Definitions

  • the present invention relates to a cosmetic antibacterial sponge. More specifically, the present invention has an antibacterial cosmetic sponge that is excellent in antibacterial properties, antibacterial maintenance properties, and wash resistance, and the antibacterial cosmetic sponge is suitable for use in cosmetics such as liquid foundations and powder cosmetics.
  • the present invention relates to a cosmetic antibacterial applicator that can be suitably used when applying cosmetics to the skin.
  • the cosmetic antibacterial applicator when cosmetics adhere to the cosmetic antibacterial applicator, the cosmetic antibacterial applicator is generally washed in order to keep the cosmetic antibacterial applicator sanitary.
  • the organic synthetic antibacterial agent is removed from the cosmetic antibacterial applicator along with the adhering cosmetics. Not only will it be impossible to maintain the antibacterial properties of the antibacterial cosmetic applicator, but the organic synthetic antibacterial agent removed from the antibacterial cosmetic applicator will be drained away, raising concerns about the impact on the natural environment.
  • the present invention has been made in view of the above-mentioned prior art, and provides an antibacterial product for cosmetics that has excellent antibacterial properties even without the use of organic synthetic antibacterial agents, and has excellent antibacterial maintenance properties and washing resistance.
  • an antibacterial cosmetic applicator that includes a sponge and the antibacterial cosmetic sponge and can be suitably used, for example, when applying cosmetics such as liquid foundation and powder cosmetics to the skin. The task is to
  • the present invention (1) An antibacterial cosmetic sponge characterized by containing a vegetable essential oil as an essential oil component; (2) The vegetable essential oil according to (1) above, wherein the vegetable essential oil is at least one vegetable essential oil selected from the group consisting of peppermint oil, lavender oil, tea tree oil, eucalyptus oil, lemon oil, hinokitiol oil, and neem oil.
  • the cosmetic antibacterial sponge according to (1) above wherein the vegetable essential oil is contained in the polymer constituting the sponge; (4) The cosmetic antibacterial sponge according to (3) above, wherein the amount of vegetable essential oil is 0.0002 to 0.9 parts by mass per 100 parts by mass of the nonvolatile content of the polymer constituting the sponge; (5)
  • the polymer constituting the sponge is selected from the group consisting of acrylonitrile-butadiene rubber, styrene-butadiene rubber, natural rubber, isoprene rubber, urethane rubber, cellulose, polyvinyl alcohol, thermoplastic polyester, polyolefin, and flexible polyurethane.
  • the cosmetic antibacterial sponge according to (3) above which is at least one polymer; (6)
  • the antibacterial activity value based on the provisions of JIS L-1902 (2015) is 2.0 or more, and the halo width based on the provisions of JIS L-1902 (2015) is not detected in the above (1) to (5).
  • an antibacterial cosmetic sponge that has excellent antibacterial properties without using an organic synthetic antibacterial agent, and also has excellent antibacterial retention and washing resistance, and the antibacterial cosmetic sponge.
  • a cosmetic antibacterial applicator that can be suitably used, for example, when applying cosmetics such as liquid foundations and powder cosmetics to the skin.
  • the cosmetic antibacterial sponge of the present invention is characterized by containing vegetable essential oil as an essential oil component.
  • the cosmetic antibacterial sponge of the present invention contains vegetable essential oils, so it has excellent antibacterial properties even without the use of conventionally used organic synthetic antibacterial agents, and it maintains its antibacterial properties even after washing. It also has excellent antibacterial retention and washing resistance.
  • the antibacterial maintenance property is that the vegetable essential oil is difficult to bleed from the cosmetic antibacterial sponge, and the antibacterial property is maintained by the vegetable essential oil being retained in the cosmetic antibacterial sponge. means quality.
  • wash resistance means the property that antibacterial properties are maintained even after the antibacterial cosmetic sponge is washed.
  • the vegetable essential oil used in the antibacterial cosmetic sponge of the present invention is of natural origin, it is distinguished from commonly used organic synthetic antibacterial agents.
  • Vegetable essential oils include peppermint oil, lavender oil, tea tree oil, eucalyptus oil, lemon oil, hinokitiol oil, and neem oil. These vegetable essential oils may be used alone or in combination of two or more.
  • the vegetable essential oil used in the cosmetic antibacterial sponge of the present invention may contain essential oils other than the above-mentioned vegetable essential oils as long as they do not impede the purpose of the present invention.
  • Peppermint oil contains menthol, menthone, and 1,8-cineole as main components, and other components such as methyl acetate, menthofuran, isomenthone, limonene, and pinene as minor components.
  • the content of each component in peppermint oil cannot be definitively determined as it varies depending on the conditions used when distilling peppermint stems and leaves with steam, but examples include approximately 40-60% by mass of menthol, menthone, etc.
  • Examples include peppermint oil containing as main components about 15 to 25% by mass and about 5 to 10% by mass of 1,8-cineole.
  • Peppermint oil has excellent affinity with the sponge made of the above-mentioned soft foamed resin, can prevent the elution of vegetable essential oils, and can improve washing resistance, so it can be suitably used in the present invention.
  • Lavender oil contains linalyl acetate as a main component at a content of 30 to 40% by mass, and also contains components such as limonene, linalool, geraniol, nerol, cineole, and d-borneol.
  • Tea tree oil contains terpineol, cineole, etc.
  • Eucalyptus oil contains citronellal, cineole, camphene, and pinene.
  • Lemon oil contains d-limonene and citral.
  • Hinokitiol oil contains hinokitiol. Neem oil contains azadirachtin.
  • vegetable essential oils it has excellent compatibility with sponges made of rubbers such as acrylonitrile-butadiene rubber (NBR), styrene-butadiene rubber (SBR), urethane rubber, and soft foamed resins such as flexible polyurethane foam.
  • NBR acrylonitrile-butadiene rubber
  • SBR styrene-butadiene rubber
  • urethane rubber urethane rubber
  • soft foamed resins such as flexible polyurethane foam.
  • Peppermint oil is preferred because it can prevent the elution of vegetable essential oils and improve washing resistance.
  • the vegetable essential oil is contained in the polymer constituting the sponge.
  • the reason why vegetable essential oil is contained in the polymer that makes up the sponge is that the vegetable essential oil is already contained in the polymer that is the raw material for the sponge, and that after the sponge is made, it is added to the polymer that makes up the sponge. This includes the fact that vegetable essential oil has been absorbed, and that after the sponge has been produced, the vegetable essential oil has been adsorbed onto the polymer that makes up the sponge.
  • the vegetable essential oil is preferably contained in advance in the polymer that is the raw material of the sponge.
  • the amount of vegetable essential oil per 100 parts by mass of non-volatile content of the polymer constituting the sponge cannot be determined unconditionally because it varies depending on the type of vegetable essential oil, but it is important from the viewpoint of imparting sufficient antibacterial properties to the sponge.
  • the amount is preferably 0.0002 parts by mass or more, more preferably 0.0015 parts by mass or more, still more preferably 0.0075 parts by mass or more, even more preferably 0.015 parts by mass or more, and the stickiness caused by vegetable essential oils is reduced. From the viewpoint of reducing the amount of oil added to the sponge and suppressing the odor of the vegetable essential oil, it is preferably 0.9 parts by mass or less, more preferably 0.6 parts by mass or less, and even more preferably 0.3 parts by mass or less. , even more preferably 0.15 parts by mass or less, particularly preferably 0.145 parts by mass or less.
  • the nonvolatile content of a polymer means a polymer from which volatile components such as a solvent contained in the polymer have been removed.
  • polymers constituting the sponge include rubbers such as acrylonitrile-butadiene rubber (NBR), styrene-butadiene rubber (SBR), natural rubber (NR), isoprene rubber (IR), and urethane rubber; cellulose such as carboxymethyl cellulose; Examples include polyvinyl alcohol; thermoplastic polyester; polyolefin; thermoplastic resins such as flexible polyurethane; however, the present invention is not limited to these examples. These polymers may be used alone or in combination of two or more.
  • NBR acrylonitrile-butadiene rubber
  • SBR styrene-butadiene rubber
  • NR natural rubber
  • IR isoprene rubber
  • urethane rubber urethane rubber
  • cellulose such as carboxymethyl cellulose
  • examples include polyvinyl alcohol; thermoplastic polyester; polyolefin; thermoplastic resins such as flexible polyurethane; however, the present invention is not limited to these examples. These polymers may be used alone or in combination
  • thermoplastic polyester examples include polyethylene terephthalate and polybutylene terephthalate, but the present invention is not limited to these examples.
  • polyolefin examples include polyethylene, polypropylene, ethylene-propylene copolymer, etc., but the present invention is not limited to these examples.
  • acrylonitrile-butadiene rubber NBR
  • styrene-butadiene rubber SBR
  • natural rubber isoprene rubber
  • urethane rubber urethane rubber
  • soft polyurethane is preferred, from the viewpoint of improving the antibacterial properties of the sponge, acrylonitrile-butadiene rubber (NBR) and styrene-butadiene rubber (SBR) are more preferred, and acrylonitrile-butadiene rubber (NBR) is even more preferred.
  • acrylonitrile-butadiene rubber has excellent affinity with peppermint oil, prevents the elution of vegetable essential oils, improves washing resistance, and improves the antibacterial properties of the sponge. From the viewpoint of achieving this, it is preferable to use acrylonitrile-butadiene rubber (NBR) in combination with peppermint oil.
  • the rubber When using rubber as the polymer, the rubber can be used as latex.
  • Polymers such as thermoplastic resins and cellulose can be used in a form suitable for the polymer, such as a solution, emulsion, or suspension.
  • polyolefin When polyolefin is used as the polymer, the heated and melted polyolefin and vegetable essential oil may be kneaded to obtain a uniform composition.
  • flexible polyurethane a foam of the flexible polyurethane (flexible polyurethane foam) can be used as a sponge.
  • the cosmetic antibacterial sponge of the present invention can be prepared by, for example, preparing a polymer containing vegetable essential oil by mixing vegetable essential oil and a polymer and dispersing the vegetable essential oil in the polymer, and adding the sponge to the polymer.
  • a gas such as air, nitrogen gas, carbon dioxide gas, etc. is mixed into the polymer to have a predetermined expansion ratio, the gas bubbles are dispersed in the polymer, and the polymer in which the bubbles are dispersed is filled into a mold.
  • a method of manufacturing an antibacterial cosmetic sponge by heating to a predetermined temperature (hereinafter referred to as manufacturing method A), a method of manufacturing a cosmetic antibacterial sponge by mixing a polymer, a vegetable essential oil, and a chemical blowing agent such as carbonate or bicarbonate, A method of producing an antibacterial cosmetic sponge by heating the mixture to decompose the chemical foaming agent and foaming the polymer (hereinafter referred to as production method B), after impregnating the sponge with vegetable essential oil, A method for producing an antibacterial cosmetic sponge (hereinafter referred to as production method C) by washing the sponge with a solvent such as water to remove the vegetable essential oil liberated within the sponge.
  • the present invention is not limited to only such methods.
  • manufacturing methods A and B are preferred, and manufacturing method A is more preferred, from the viewpoint of improving the antibacterial durability and wash resistance of the cosmetic antibacterial sponge.
  • manufacturing method A and manufacturing method B are adopted, the vegetable essential oil is dispersed in the polymer, but it may be present on the surface of the polymer.
  • the vegetable essential oil may be used as it is or as a solution in an organic solvent.
  • the type of organic solvent is preferably selected and used appropriately depending on the type of vegetable essential oil. Examples of suitable organic solvents include ethanol, but the present invention is not limited to such examples.
  • the concentration of the vegetable essential oil in the organic solvent solution of the vegetable essential oil is not particularly limited, and it is preferable to adjust the concentration of the vegetable essential oil to suit each production method. In production method C, it is preferable to use a solution of a vegetable essential oil in an organic solvent, and it is more preferable to use an organic solvent solution of a vegetable essential oil in which the concentration of the vegetable essential oil is about 10 to 5000 ppm.
  • gas bubbles are dispersed in the polymer containing vegetable essential oil, from the viewpoint of improving the antibacterial durability and washing resistance of the cosmetic antibacterial sponge. is preferred.
  • the sponge may have either closed cells or open cells, it is preferable to have open cells from the viewpoint of increasing the retention of vegetable essential oil within the sponge.
  • the foaming ratio of the cosmetic antibacterial sponge is not particularly limited, but from the viewpoint of improving usability when the cosmetic antibacterial sponge is used as a cosmetic antibacterial applicator such as a puff, it is preferably about 3 to 10 times. It is preferable that there be.
  • the expansion ratio is a value obtained by dividing the volume of the sponge by the volume of the polymer that is the raw material for the sponge.
  • the diameter of the bubbles contained in the sponge is not particularly limited, but it is usually preferably about 0.01 to 50 ⁇ m.
  • the cosmetic antibacterial sponge of the present invention may contain additives such as a vegetable oil such as olive oil, a coloring agent, and a fragrance, within a range that does not impede the purpose of the present invention.
  • the additive may be contained in the polymer constituting the sponge, or may be contained within the bubbles constituting the sponge.
  • the cosmetic antibacterial sponge of the present invention contains a vegetable oil such as olive oil, the flexibility of the cosmetic antibacterial sponge can be increased.
  • the cosmetic antibacterial sponge of the present invention can be obtained in the manner described above.
  • the cosmetic antibacterial sponge of the present invention has antibacterial properties even without the use of conventional organic synthetic antibacterial agents. Since the antibacterial property can be maintained even after the sponge is washed, it has excellent washing resistance and can be suitably used as an antibacterial applicator for cosmetics.
  • acrylonitrile-butadiene rubber has excellent affinity with peppermint oil, prevents the elution of vegetable essential oils, improves washing resistance, and improves the sponge's washing resistance. From the viewpoint of improving the maintenance of antibacterial properties, it is preferable to use a sponge in which acrylonitrile-butadiene rubber (NBR) and peppermint oil are used together, and air bubbles are dispersed in the acrylonitrile-butadiene rubber (NBR) containing peppermint oil. .
  • the type and content of components such as vegetable essential oils and organic synthetic antibacterial agents in cosmetic antibacterial sponges can be determined using analytical instruments such as liquid chromatography and gas chromatography. More specifically, the types and content of ingredients such as vegetable essential oils and organic synthetic antibacterial agents in cosmetic antibacterial sponges can be determined by, for example, extracting the ingredients contained in cosmetic antibacterial sponges with an extraction solvent. Qualitative and quantitative analysis of each component can be performed by preparing an extract by using gas chromatography and examining the retention time and peak size of each component using gas chromatography. can.
  • the cosmetic antibacterial sponge of the present invention has an antibacterial activity value of 2.0 or more as measured based on the provisions of JIS L-1902 (2015), more specifically, according to the measurement method described in the following examples. , the halo width is not detected, so it has excellent antibacterial retention.
  • the cosmetic antibacterial applicator of the present invention includes the cosmetic antibacterial sponge.
  • cosmetic antibacterial applicators include cosmetic sponge puffs, facial cleansing sponges, and cosmetic chips, but the present invention is not limited to these examples.
  • Cosmetic sponge puffs are sponge puffs that are used to take cosmetics into a sponge puff and apply the cosmetics to human skin.
  • a facial cleansing sponge is a sponge used to pick up a facial cleanser on a sponge and apply the facial cleanser to the skin of a human face.
  • the cosmetic antibacterial applicator of the present invention can be manufactured using, for example, the manufacturing methods A to C of cosmetic antibacterial sponges.
  • an antibacterial cosmetic applicator when manufacturing an antibacterial cosmetic applicator using manufacturing method A of an antibacterial cosmetic sponge, vegetable essential oil is mixed with a polymer, and the vegetable essential oil is dispersed in the polymer.
  • a polymer in which the gas bubbles are dispersed is prepared by mixing a gas such as air into the polymer so that the sponge has a predetermined expansion ratio, and dispersing the gas bubbles in the polymer.
  • a cosmetic antibacterial sponge is formed by filling a mold with an inner surface shape corresponding to a cosmetic antibacterial applicator of a predetermined shape and heating the mold to a temperature of about 80 to 130°C.
  • An antibacterial cosmetic applicator can be produced by removing the antibacterial cosmetic sponge from the mold and cutting it to a predetermined thickness as necessary.
  • an antibacterial cosmetic applicator when manufacturing an antibacterial cosmetic applicator using manufacturing method B of an antibacterial cosmetic sponge, a polymer, a vegetable essential oil, and a chemical foaming agent are mixed, and the resulting mixture is used to form an antibacterial cosmetic applicator into a predetermined shape.
  • the chemical foaming agent is decomposed and the polymer is foamed by heating the mold to a temperature of approximately 80 to 130°C.
  • a cosmetic antibacterial applicator is produced by molding a cosmetic antibacterial sponge containing essential oil, taking out the obtained cosmetic antibacterial sponge from the mold, and cutting it to a predetermined thickness as necessary. It can be made.
  • an antibacterial cosmetic applicator when manufacturing an antibacterial cosmetic applicator using manufacturing method C for an antibacterial cosmetic sponge, the sponge is impregnated with vegetable essential oil to create an antibacterial cosmetic sponge, and then water etc. are added as needed. By washing the cosmetic antibacterial sponge with a solvent of By cutting it into pieces, an antibacterial cosmetic applicator can be produced.
  • the cosmetic antibacterial applicator of the present invention uses the cosmetic antibacterial sponge of the present invention, it has excellent antibacterial properties without using an organic synthetic antibacterial agent, and has excellent antibacterial maintenance and resistance. It also has excellent washability, and can be suitably used, for example, when applying cosmetics such as liquid foundations and powder cosmetics to the skin.
  • Examples 1 to 8 100 parts by mass of NBR latex [manufactured by Nippon Zeon Co., Ltd., product name: NIPOL LX531B, resin solid content: 60 mass%] as a polymer constituting the sponge, sulfur as a vulcanizing agent [manufactured by Hosoi Chemical Co., Ltd.]1.
  • vulcanization accelerator manufactured by Kawaguchi Chemical Co., Ltd., trade name: Accel MZ
  • vulcanization aid manufactured by Uniroyal Co., Ltd., trade name: Trimenbase
  • 1.0 parts by mass 1.5 parts by mass of antioxidant manufactured by Kawaguchi Chemical Co., Ltd., trade name: ANTAGE BHT
  • 3.0 parts by mass of sodium fluorosilicide manufactured by Mitsui Toatsu Chemical Co., Ltd.
  • the vegetable essential oil shown in Table 1 was added to the latex composition in the amount shown in Table 1 per 100 parts by mass of non-volatile content of the NBR latex contained in the latex composition obtained above, so as to obtain a uniform composition.
  • a mixture was prepared by mixing.
  • the mixture By mixing air into the mixture obtained above, the mixture is foamed to 5 times the volume (foaming ratio: 5 times), and then the mixture is injected into an aluminum cylindrical body with an inner diameter of 55 mm. did. Subsequently, this cylindrical body was heated at 120° C. for 25 minutes to obtain a cylindrical sponge.
  • the sponge obtained above was taken out from the cylindrical body, washed with water, dried, cut to a thickness of 8 mm, and the edges were polished to produce an antibacterial cosmetic sponge. All of the obtained cosmetic antibacterial sponges had open cells.
  • CFU colony forming unit
  • test piece was not placed on the agar medium, and after culturing the bacteria in a thermostatic chamber at 37°C for 18 hours in the same manner as described above, the bacteria were washed out by washing the test piece with water, and the number of surviving bacteria was determined. B (CFU/mL) was measured.
  • [Antibacterial activity value] log (number of surviving bacteria B/number of surviving bacteria A)
  • the antibacterial activity value was determined based on the following, and the antibacterial property was evaluated based on the following evaluation criteria. (Evaluation criteria) ⁇ : Antibacterial activity value is 5.5 or more (pass). ⁇ : Antibacterial activity value is 2.0 or more and less than 5.5 (pass). ⁇ : Antibacterial activity value is less than 2.0 (fail).
  • agar medium After mixing 1 mL of Staphylococcus aureus bacterial solution (initial number of bacteria: 1.5 x 10 5 CFU/mL) and 15 mL of agar medium adjusted to approximately 45°C in a Petri dish, the agar medium is cooled to room temperature. It was solidified by this. Excess water was removed by tilting the Petri dish.
  • test piece was placed in close contact with the surface of the agar medium in the petri dish, and the bacteria were cultured for 24 hours in a thermostatic chamber at 37°C.
  • the halo width was determined based on the following, and antibacterial maintenance was evaluated based on the following evaluation criteria. Note that the smaller the halo width is, the better the antibacterial maintenance property is.
  • ⁇ Halo width is not detected (pass).
  • ⁇ The halo width was detected and was less than 1 mm (fail).
  • XX The halo width is 1 mm or more (fail).
  • test piece was immersed in an aqueous solution with a neutral detergent concentration of 0.1% by mass and a water temperature of 40°C for 30 minutes, and then rubbed and washed by hand 100 times. After that, the antibacterial properties and antibacterial maintenance properties of the test pieces were evaluated in the same manner as above.
  • Examples 37-41 100 parts by mass of NBR latex [manufactured by Nippon Zeon Co., Ltd., product name: NIPOL LX531B, resin solid content: 60 mass%] as a polymer constituting the sponge, sulfur as a vulcanizing agent [manufactured by Hosoi Chemical Co., Ltd.]1.
  • vulcanization accelerator manufactured by Kawaguchi Chemical Co., Ltd., trade name: Accel MZ
  • vulcanization aid manufactured by Uniroyal Co., Ltd., trade name: Trimenbase
  • 1.0 parts by mass 1.5 parts by mass of antioxidant manufactured by Kawaguchi Chemical Co., Ltd., trade name: ANTAGE BHT
  • 3.0 parts by mass of sodium fluorosilicide manufactured by Mitsui Toatsu Chemical Co., Ltd.
  • the latex composition was foamed to a volume of 5 times (foaming ratio: 5 times), and then the latex composition was foamed into a mold made of aluminum having an inner diameter of 55 mm. was injected into a cylindrical body. Subsequently, this cylindrical body was heated at 120° C. for 25 minutes to obtain a cylindrical sponge. The sponge obtained above was taken out from the cylindrical body, washed with water, dried, cut to a thickness of 8 mm, and the edges were polished to produce a cosmetic sponge.
  • the cosmetic sponge obtained above was immersed for 1 hour in an ethanol solution of peppermint oil (liquid temperature: 23°C) having the concentration of peppermint oil shown in Table 2, and then the cosmetic sponge was immersed in the ethanol solution (liquid temperature: 23°C).
  • the cosmetic sponge was immersed in the ethanol solution (liquid temperature: 23°C).
  • Remove the cosmetic sponge from the solution wash the cosmetic sponge with water to remove peppermint oil that is free within the cosmetic sponge, and dry the cosmetic sponge for 3 hours in a dryer with an internal temperature of 80°C.
  • a cosmetic antibacterial sponge was created using this method. All of the obtained cosmetic antibacterial sponges had open cells.
  • Comparative examples 1 to 9 Example 1 except that the organic synthetic antibacterial agent shown in Table 3 was used in the amount shown in Table 3 instead of using 0.0002 parts by mass of peppermint oil per 100 parts by mass of nonvolatile content of NBR latex in Example 1.
  • a cosmetic antibacterial sponge was prepared in the same manner as above.
  • each abbreviation of the organic synthetic antibacterial agent means the following.
  • ZPT Zinc pyrithione
  • IPBC Propyl butylcarbamate iodide
  • CCR Chlorocresol
  • the cosmetic antibacterial sponge obtained in Comparative Example 1 uses an organic synthetic antibacterial agent (zinc pyrithione), and a halo width (bacterial growth inhibition width) was observed, and after a washing test, the halo width was A decrease in the amount of antibacterial agents observed in the sample indicates that the organic synthetic antibacterial agent bleeds from the test piece, and there is a risk that the exuded organic synthetic antibacterial agent may come into direct contact with human skin.
  • an organic synthetic antibacterial agent zinc pyrithione
  • the cosmetic antibacterial sponges obtained in each example did not contain organic synthetic antibacterial agents. It can be seen that this method has the advantage of being environmentally friendly because no organic synthetic antibacterial agent is discharged.
  • the cosmetic antibacterial sponge obtained in each example uses lavender oil, tea tree oil, eucalyptus oil, lemon oil, hinokitiol oil, or neem oil, so it has sufficient antibacterial properties to exhibit antibacterial properties. It was confirmed that it showed an activity value, and no halo width was detected. Furthermore, it was confirmed that the antibacterial cosmetic sponges obtained in each example had an antibacterial activity value that was 100 times or more higher than that of the antibacterial cosmetic sponges obtained in each comparative example.
  • the cosmetic antibacterial sponges obtained in each example have excellent antibacterial retention properties since no halo width is detected, and the exudation of the plant essential oil prevents the plant essential oil from coming into contact with human skin. I know what I want. In addition, when the cosmetic antibacterial sponges obtained in each example were washed, the antibacterial properties were maintained even after washing, and the halo width was not detected, indicating excellent antibacterial maintenance properties. It can be seen that it is also excellent.
  • the cosmetic antibacterial sponges obtained in Examples 1 to 7, especially the cosmetic antibacterial sponges obtained in Examples 1 to 6, were prepared by using acrylonitrile-butadiene rubber (NBR) and peppermint oil in combination. It can be seen that this prevents the elution of vegetable essential oils, improves washing resistance, improves the ability to maintain the antibacterial properties of the sponge, and provides an excellent usability.
  • NBR acrylonitrile-butadiene rubber
  • the cosmetic antibacterial sponge of the present invention does not use conventional organic synthetic antibacterial agents, it is not only environmentally friendly and has excellent antibacterial properties, but also exudes vegetable essential oils ( It has excellent antibacterial retention properties because it is difficult to bleed (bleed), and it also has excellent washing resistance because it maintains its antibacterial properties even when washed after being coated with cosmetics such as liquid foundation and powder cosmetics. Therefore, it can be suitably used in cosmetic antibacterial applicators.

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Abstract

L'invention concerne une éponge antimicrobienne pour produits cosmétiques qui contient une huile essentielle végétale en tant que composant d'huile essentielle et qui présente d'excellentes propriétés antimicrobiennes même sans l'utilisation d'un agent antimicrobien synthétique organique et également une excellente aptitude à la rétention de propriétés antimicrobiennes et une excellente aptitude au lavage. L'invention concerne également un applicateur antimicrobien pour produits cosmétiques qui comprend l'éponge antimicrobienne pour produits cosmétiques et qui peut être utilisé de manière appropriée pour, par exemple, appliquer des produits cosmétiques, tels que des fonds de teint liquides et des produits cosmétiques en poudre, sur la peau.
PCT/JP2023/008461 2022-03-08 2023-03-07 Éponge antimicrobienne pour produits cosmétiques Ceased WO2023171641A1 (fr)

Priority Applications (2)

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CN202380025385.4A CN118829373A (zh) 2022-03-08 2023-03-07 化妆用抗菌性海绵
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JPH09241413A (ja) * 1996-03-08 1997-09-16 Suzuki Sogyo Co Ltd 抗菌性を有する軟質合成樹脂発泡体
JP2003511127A (ja) * 1999-10-08 2003-03-25 ザ、プロクター、エンド、ギャンブル、カンパニー 標的表面上へ物質を分散させるための半閉アプリケータ
JP2017160317A (ja) * 2016-03-09 2017-09-14 三井化学産資株式会社 鼠撃退ウレタンフォームおよびその製造方法

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JP3051064B2 (ja) 1996-09-11 2000-06-12 憲司 中村 抗菌性化粧用塗布具
JP6225691B2 (ja) 2013-12-18 2017-11-08 三菱自動車工業株式会社 バッテリ制御装置
JP2017123907A (ja) 2016-01-12 2017-07-20 株式会社東洋クオリティワン 化粧塗布用パフ
JP7361363B2 (ja) * 2019-06-27 2023-10-16 ピアス株式会社 化粧用組成物及び化粧品
JP7348614B2 (ja) * 2019-11-15 2023-09-21 株式会社タイキ 塗布具包装体とその製法

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Publication number Priority date Publication date Assignee Title
JPH09241413A (ja) * 1996-03-08 1997-09-16 Suzuki Sogyo Co Ltd 抗菌性を有する軟質合成樹脂発泡体
JP2003511127A (ja) * 1999-10-08 2003-03-25 ザ、プロクター、エンド、ギャンブル、カンパニー 標的表面上へ物質を分散させるための半閉アプリケータ
JP2017160317A (ja) * 2016-03-09 2017-09-14 三井化学産資株式会社 鼠撃退ウレタンフォームおよびその製造方法

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JP7587296B2 (ja) 2024-11-20

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