WO2021075460A1 - 防臭剤組成物、吸収体及び吸収性物品 - Google Patents
防臭剤組成物、吸収体及び吸収性物品 Download PDFInfo
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- WO2021075460A1 WO2021075460A1 PCT/JP2020/038765 JP2020038765W WO2021075460A1 WO 2021075460 A1 WO2021075460 A1 WO 2021075460A1 JP 2020038765 W JP2020038765 W JP 2020038765W WO 2021075460 A1 WO2021075460 A1 WO 2021075460A1
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- deodorant composition
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- water
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- absorbent resin
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Images
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/84—Accessories, not otherwise provided for, for absorbent pads
- A61F13/8405—Additives, e.g. for odour, disinfectant or pH control
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- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/42—Use of materials characterised by their function or physical properties
- A61L15/46—Deodorants or malodour counteractants, e.g. to inhibit the formation of ammonia or bacteria
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- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
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- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/53—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators characterised by the absorbing medium
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- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
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- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/20—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing organic materials
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- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/24—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/01—Deodorant compositions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/84—Accessories, not otherwise provided for, for absorbent pads
- A61F13/8405—Additives, e.g. for odour, disinfectant or pH control
- A61F2013/8408—Additives, e.g. for odour, disinfectant or pH control with odour control
- A61F2013/8414—Additives, e.g. for odour, disinfectant or pH control with odour control with anti-microbic
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- A—HUMAN NECESSITIES
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- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/15—Absorbent pads, e.g. sanitary towels, swabs or tampons for external or internal application to the body; Supporting or fastening means therefor; Tampon applicators
- A61F13/84—Accessories, not otherwise provided for, for absorbent pads
- A61F13/8405—Additives, e.g. for odour, disinfectant or pH control
- A61F2013/8408—Additives, e.g. for odour, disinfectant or pH control with odour control
- A61F2013/8423—Additives, e.g. for odour, disinfectant or pH control with odour control with molecular sieves; zeolites
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- A—HUMAN NECESSITIES
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- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/10—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing inorganic materials
- A61L2300/102—Metals or metal compounds, e.g. salts such as bicarbonates, carbonates, oxides, zeolites, silicates
- A61L2300/104—Silver, e.g. silver sulfadiazine
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- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/20—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing organic materials
- A61L2300/204—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing organic materials with nitrogen-containing functional groups, e.g. aminoxides, nitriles, guanidines
Definitions
- the present invention relates to a deodorant composition, an absorber and an absorbent article.
- Absorbent articles for absorbing various liquids are used in various applications such as diapers, sanitary materials, agricultural and horticultural materials, and industrial materials.
- an odorous liquid typified by a body fluid (urine, blood, sweat, etc.)
- a foul odor is generated. Therefore, a deodorant component such as zeolite may be used to suppress the generation of odor (see, for example, Patent Document 1 below).
- Silver zeolite is used as such zeolite, but the deodorizing effect is not sufficient, and it is required to improve the deodorizing performance of absorbent articles.
- One aspect of the present invention is to provide a deodorant composition useful for an absorbent article having excellent deodorant performance.
- Another aspect of the present invention is to provide an absorber and an absorbent article using the deodorant composition.
- the present inventors have found that excellent deodorizing performance can be exhibited by using silver zeolite and an organic antibacterial agent in combination, and have invented the invention.
- the first embodiment of one aspect of the present invention provides a deodorant composition used in an absorbent article, which comprises a silver zeolite and an organic antibacterial agent.
- the first embodiment of the present invention it is possible to provide a deodorant composition useful for an absorbent article having excellent deodorizing performance.
- the deodorant composition is colored before it absorbs the liquid, problems such as deterioration of the liquid absorption performance of the deodorant composition and deterioration of the commercial value may occur. Therefore, it is required to suppress the coloring of the deodorant composition, and in particular, it is required to suppress the yellowing of the deodorant composition over time when silver zeolite is used.
- the present inventors improve the deodorant performance as compared with the case where the deodorant component is not used, but the deodorant composition becomes yellow over time. It was found to change (see Reference Example A1 below). On the other hand, the present inventors can suppress the yellowing of the deodorant composition over time while improving the deodorizing performance when the silver zeolite is used in combination with the silver zeolite and the organic antibacterial agent. I found.
- the second embodiment of one aspect of the present invention provides a deodorant composition containing silver zeolite, an organic antibacterial agent, and a water-absorbent resin.
- the second embodiment of the present invention it is possible to suppress yellowing of the deodorant composition over time while providing a deodorant composition useful for an absorbent article having excellent deodorant performance.
- a deodorant composition that gives a low yellowness when held under high temperature and high humidity is useful for an absorbent article having excellent deodorant performance.
- the third embodiment of one aspect of the present invention is a deodorant composition containing silver zeolite and a water-absorbent resin, wherein the deodorant composition has a temperature of 70 ⁇ 2 ° C. and a relative humidity of 90 ⁇ 2.
- a deodorant composition having a yellowness of 20 or less after 1 day of holding at%.
- the third embodiment of the present invention it is possible to provide a deodorant composition useful for an absorbent article having excellent deodorant performance.
- Another aspect of the present invention provides an absorber containing the above-mentioned deodorant composition.
- Another aspect of the present invention provides an absorbent article comprising the above-mentioned absorber.
- a deodorant composition useful for an absorbent article having excellent deodorizing performance it is possible to provide a deodorant composition useful for an absorbent article having excellent deodorizing performance. Further, according to one aspect of the present invention, it is possible to suppress yellowing of the deodorant composition over time while providing a deodorant composition useful for an absorbent article having excellent deodorant performance. Furthermore, according to another aspect of the present invention, it is possible to provide an absorber and an absorbent article using these deodorant compositions.
- each component in the composition means the total amount of the plurality of substances present in the composition when a plurality of substances corresponding to each component are present in the composition, unless otherwise specified.
- “Saline” refers to a 0.9% by mass sodium chloride aqueous solution.
- Room temperature means 25 ° C ⁇ 2 ° C.
- the deodorant composition according to the first embodiment is a deodorant composition used in an absorbent article, and contains silver zeolite and an organic antibacterial agent. According to the deodorant composition according to the first embodiment, it is possible to improve the deodorant performance when silver zeolite is used, and provide a deodorant composition useful for an absorbent article having excellent deodorant performance. be able to. According to the deodorant composition according to the first embodiment, it is possible to improve the deodorizing performance when the deodorant composition absorbs water in an absorbent article.
- the organic antibacterial agent having an antibacterial action has a deodorizing action different from the urease inhibitory action, and the deodorizing performance is improved by the synergistic effect of the deodorizing action of the organic antibacterial agent and the silver urease inhibitory action of silver zeolite. It is estimated that it will improve.
- the cause is not limited to the content.
- the location of the deodorant composition according to the first embodiment in the absorbent article is not particularly limited.
- the deodorant composition according to the first embodiment may be arranged at an arbitrary position of the absorbent article, and may be contained in an arbitrary constituent member of the absorbent article.
- the deodorant composition according to the first embodiment may be contained in an absorbent body of an absorbent article, may be contained in a constituent member other than the absorbent body of the absorbent article, and may be contained in a constituent member of the absorbent article. May exist in between.
- the deodorizing performance when silver zeolite is used can be improved even in a place where the water-absorbent resin does not exist in the absorbent article.
- Body fluids such as urine, blood, and sweat tend to generate odors. Therefore, absorbent articles (diapers, toilet training pants, incontinence pads, sanitary materials, etc.) that are supposed to absorb body fluids are required to have excellent deodorant performance.
- absorbent articles diapers, toilet training pants, incontinence pads, sanitary materials, etc.
- the deodorant composition according to the first embodiment it is possible to improve the deodorizing performance when the deodorant composition absorbs the body fluid in the absorbent article.
- the deodorant composition according to the second embodiment contains silver zeolite, an organic antibacterial agent, and a water-absorbent resin.
- the deodorant composition according to the second embodiment may be a deodorant composition corresponding to the deodorant composition according to the first embodiment. According to the deodorant composition according to the second embodiment, it is possible to suppress yellowing of the deodorant composition over time while improving the deodorant performance when silver zeolite is used, and the absorbency is excellent in deodorant performance. It is possible to suppress yellowing of the deodorant composition over time while providing a useful deodorant composition for the article. According to the deodorant composition according to the second embodiment, the deodorizing performance when the deodorant composition absorbs water can be improved.
- the cause for improving the deodorant performance is the same as the above-mentioned cause for the first embodiment.
- the cause is not limited to the content.
- the deodorant composition according to the second embodiment it is possible to improve the deodorizing performance when the deodorant composition absorbs the body fluid in the absorbent article.
- yellowing occurs one day (24 hours) after the deodorant composition is prepared by mixing silver zeolite, an organic antibacterial agent and a water-absorbent resin. It can be suppressed (for example, the deodorant composition can be kept at a temperature of 70 ⁇ 2 ° C. and a relative humidity of 90 ⁇ 2% to suppress yellowing after 1 day (24 hours)). Further, according to the deodorant composition according to the second embodiment, yellow when 3 days (72 hours) have passed since the deodorant composition was prepared by mixing silver zeolite, an organic antibacterial agent and a water-absorbent resin.
- yellowing for example, it is possible to suppress yellowing after 3 days (72 hours) by keeping the deodorant composition at a temperature of 70 ⁇ 2 ° C. and a relative humidity of 90 ⁇ 2%). ..
- yellowing of the deodorant composition over time before water absorption can be suppressed.
- silver ions contained in silver zeolite can act as a cause of yellowing, it is presumed that yellowing is suppressed by the action of an organic antibacterial agent having an antibacterial action on silver ions.
- the cause is not limited to the content.
- the deodorant composition according to the third embodiment contains silver zeolite and a water-absorbent resin, and the deodorant composition is kept at a temperature of 70 ⁇ 2 ° C. and a relative humidity of 90 ⁇ 2% for one day (24). The yellowness after the lapse of time) is 20 or less.
- the deodorant composition according to the third embodiment may be the deodorant composition according to the first embodiment or the deodorant composition corresponding to the deodorant composition according to the second embodiment. According to the deodorant composition according to the third embodiment, it is possible to improve the deodorant performance when silver zeolite is used, and provide a deodorant composition useful for an absorbent article having excellent deodorant performance. be able to. According to the deodorant composition according to the third embodiment, it is possible to improve the deodorizing performance when the deodorant composition absorbs water in the absorbent article.
- the deodorant composition according to the third embodiment may contain an organic antibacterial agent.
- the above-mentioned yellowness may be 18 or less or 17 or less from the viewpoint of easily improving the deodorizing performance.
- the degree of yellowness may be 16 or less or 15 or less.
- the yellowness may be 5 or more, 8 or more, 10 or more, 15 or more, 16 or more, 17 or more, or 18 or more. The yellowness can be measured by the method described in Examples described later.
- it is a deodorant composition containing silver zeolite and a water-absorbent resin, and the deodorant composition is maintained at a temperature of 70 ⁇ 2 ° C. and a relative humidity of 90 ⁇ 2% for one day. It is also possible to provide a deodorant composition in which the amount of change in yellowness over time is 15 or less. According to such a deodorant composition, it is possible to improve the deodorizing performance when silver zeolite is used, and it is possible to provide a deodorizing agent composition useful for an absorbent article having excellent deodorizing performance. .. Further, according to such a deodorant composition, it is possible to improve the deodorizing performance when the deodorant composition absorbs water in an absorbent article.
- the amount of change in yellowness may be 15 or less, 12 or less, 10 or less, or 9 or less from the viewpoint of easily improving the deodorizing performance.
- the amount of change in yellowness may be 8 or less or 7 or less.
- the amount of change in yellowness may be 5 or more, 7 or more, 8 or more, 9 or more, or 10 or more.
- the deodorant composition according to the present embodiment (the deodorant composition according to the first embodiment, the deodorant composition according to the second embodiment, the deodorant composition according to the third embodiment, and other embodiments.
- the amount of ammonia generated measured by the following procedures (A1) to (A3) is 1500 ppm or less and 1200 ppm or less. , 1000 ppm or less, 800 ppm or less, 500 ppm or less, 450 ppm or less, 400 ppm or less, 200 ppm or less, 100 ppm or less, 50 ppm or less, 30 ppm or less, 10 ppm or less, or 5 ppm or less.
- A1 Urea 25.0 g, sodium chloride 9.0 g, magnesium sulfate heptahydrate 0.6 g, calcium lactate 0.7 g, potassium sulfate 4.0 g, ammonium sulfate 2.5 g, and water (for example, distilled water). Mix to obtain 1000 g of aqueous solution.
- A2 A test solution is obtained by mixing 30.0 g of the aqueous solution and 1.0 mL of a 10 U / mL urease aqueous solution.
- the deodorant composition after swelling is sealed in 900 mL of dry air enclosed in a 2 L bag, and then the bag containing the deodorant composition after swelling is placed at a temperature of 35 ⁇ 2 ° C. and a relative humidity of 60. Hold at ⁇ 2% for 24 hours and measure the amount of ammonia generated.
- the deodorant composition contains silver zeolite, an organic antibacterial agent, and a water-absorbent resin, and the content of silver zeolite is 500 ppm based on the total mass of the water-absorbent resin.
- a water-absorbent resin composition having a content of 1000 ppm and the balance of which is composed of a water-absorbent resin can be used.
- the amount of ammonia generated measured by the following procedures (B1) to (B3) is 2500 ppm or less, 2000 ppm or less, 1500 ppm or less, 1200 ppm or less, 1100 ppm or less, 1000 ppm or less, It may be 800 ppm or less, 700 ppm or less, or 600 ppm or less.
- (B1) Urea 25.0 g, sodium chloride 9.0 g, magnesium sulfate heptahydrate 0.6 g, calcium lactate 0.7 g, potassium sulfate 4.0 g, ammonium sulfate 2.5 g, and water (for example, distilled water). Mix to obtain 1000 g of aqueous solution.
- test solution is obtained by mixing 30.0 g of the aqueous solution and 1.0 mL of a 30 U / mL urease aqueous solution.
- the test solution (described above) is applied to the entire fluff pulp in the absorber obtained by sequentially spraying 1.875 g of fluff pulp, 0.001 g of silver zeolite, 0.005 g of an organic antibacterial agent and 0.625 g of fluff pulp. After permeating 30.0 g of the aqueous solution and 1.0 mL of the urease aqueous solution), the amount of ammonia generated is measured when 24 hours have passed (24 hours have passed since the permeation) at a temperature of 35 ⁇ 2 ° C.
- the deodorant composition according to this embodiment may be in the form of particles.
- the deodorant composition according to the present embodiment can be used as a constituent component of the absorber.
- An absorber can be produced by uniformly supporting or adsorbing the deodorant composition on a fibrous material such as pulp or cloth after dissolving or suspending the deodorant composition in a solvent, if necessary.
- the deodorant composition and the absorber according to the present embodiment can absorb a liquid containing water as a main component (for example, a body fluid such as urine, blood, or sweat).
- diapers for example, paper diapers
- toilet training pants for example, toilet training pants, incontinence pads, sanitary materials (sanitary products, etc.), sweat pads, pet sheets, simple toilet materials, animal excrement treatment materials, agricultural and horticultural materials (water retention). It can be used in agents, soil conditioners, etc.), industrial materials (water-stopping agents, dew condensation inhibitor, etc.), etc.
- the deodorant composition according to the present embodiment may be a water-absorbent resin composition containing a water-absorbent resin, and may not contain a water-absorbent resin. That is, the deodorant composition according to the first embodiment may contain a water-absorbent resin and may not contain a water-absorbent resin.
- the deodorant composition according to the second embodiment is a water-absorbent resin composition containing a water-absorbent resin.
- the water-absorbent resin may contain silver zeolite and / or an organic antibacterial agent.
- the water-absorbent resin may be in the form of particles.
- the water-absorbent resin preferably has a structural unit derived from an ethylenically unsaturated monomer from the viewpoint of easily improving the deodorizing performance and easily suppressing yellowing over time.
- a water-absorbent resin having a structural unit derived from an ethylenically unsaturated monomer can be obtained by polymerizing a monomer composition containing an ethylenically unsaturated monomer.
- the polymerization method of the water-absorbent resin is not particularly limited, and examples thereof include a reverse phase suspension polymerization method, an aqueous solution polymerization method, a bulk polymerization method, and a precipitation polymerization method.
- the water-absorbent resin may be a crosslinked polymer.
- Examples of the ethylenically unsaturated monomer include ⁇ , ⁇ -unsaturated carboxylic acids such as (meth) acrylic acid, maleic acid, maleic anhydride and fumaric acid, and carboxylic acid-based monomers such as salts thereof; Nonionic monomers such as meta) acrylamide, N, N-dimethyl (meth) acrylamide, 2-hydroxyethyl (meth) acrylate, N-methylol (meth) acrylamide, polyethylene glycol mono (meth) acrylate; N, N -Amino group-containing unsaturated monomers such as diethylaminoethyl (meth) acrylate, N, N-diethylaminopropyl (meth) acrylate, diethylaminopropyl (meth) acrylamide, and quaternary products thereof; vinyl sulfonic acid, styrene sulfone.
- carboxylic acids such as (meth) acrylic acid,
- the ethylenically unsaturated monomer can contain at least one (meth) acrylic acid compound selected from the group consisting of (meth) acrylic acid and salts thereof. That is, the water-absorbent resin can have a structural unit derived from at least one (meth) acrylic acid compound selected from the group consisting of (meth) acrylic acid and a salt thereof.
- the ethylenically unsaturated monomer may contain both (meth) acrylic acid and a salt of (meth) acrylic acid.
- salts of ⁇ , ⁇ -unsaturated carboxylic acid include alkali metal salts (sodium salt, potassium salt, etc.), alkaline earth metal salts (calcium salt, etc.) and the like.
- the content of the structural unit derived from the (meth) acrylic acid compound is 50 mol% or more, 70 mol% or more, 90 mol% or more, 95 mol% or more, based on the total amount of the structural units constituting the water-absorbent resin. It may be 97 mol% or more, or 99 mol% or more.
- the structural unit constituting the water-absorbent resin is substantially composed of a structural unit derived from the (meth) acrylic acid compound (substantially 100 mol% of the structural unit constituting the water-absorbent resin is (meth) acrylic. It may be an aspect which is a structural unit derived from an acid compound).
- the medium particle size of the water-absorbent resin may be in the following range.
- the medium particle size may be 200 ⁇ m or more, 250 ⁇ m or more, 300 ⁇ m or more, or 340 ⁇ m or more.
- the medium particle size may be 600 ⁇ m or less, 550 ⁇ m or less, 500 ⁇ m or less, 450 ⁇ m or less, 400 ⁇ m or less, or 350 ⁇ m or less. From these viewpoints, the medium particle size may be 200 to 600 ⁇ m.
- the medium particle size can be measured by the method described in Examples described later. For the medium particle size, the measured value at room temperature can be used.
- the water absorption amount of the physiological saline of the water-absorbent resin may be 10 g / g or more, 20 g / g or more, 30 g / g or more, 40 g / g or more, 50 g / g or more, or 60 g / g or more.
- the water absorption amount of the physiological saline of the water-absorbent resin may be 80 g / g or less, 70 g / g or less, or 60 g / g or less. From these viewpoints, the water absorption amount of the physiological saline of the water-absorbent resin may be 10 to 80 g / g.
- the amount of water absorption can be measured by the method described in Examples described later. As the water absorption amount, a measured value at room temperature can be used.
- Silver zeolite is a zeolite in which silver ions are present in the pores, and can be obtained by ion-exchange some or all of the ion-exchangeable ions in the zeolite with silver ions.
- the silver zeolite may contain metal ions other than silver ions. Examples of metal ions other than silver ions include zinc ions and copper ions.
- the average particle size of silver zeolite may be 0.1 ⁇ m or more, 0.5 ⁇ m or more, 0.8 ⁇ m or more, or 1 ⁇ m or more.
- the average particle size of the silver zeolite may be 10 ⁇ m or less, 5 ⁇ m or less, 4 ⁇ m or less, 3 ⁇ m or less, or 2 ⁇ m or less. From these viewpoints, the average particle size of the silver zeolite may be 0.1 to 10 ⁇ m.
- the average particle size of silver zeolite can be measured by, for example, a laser diffraction / scattering method. As the average particle size of silver zeolite, the measured value at room temperature can be used.
- the content of silver zeolite is preferably in the following range based on the total mass of the water-absorbent resin from the viewpoint of easily improving the deodorizing performance and easily suppressing yellowing over time.
- the content of silver zeolite is preferably 50 ppm or more, 100 ppm or more, 150 ppm or more, 200 ppm or more, 250 ppm or more, 300 ppm or more, 350 ppm or more, 400 ppm or more, 450 ppm or more, or 500 ppm or more.
- the content of silver zeolite is preferably 1000 ppm or less, 900 ppm or less, 800 ppm or less, 700 ppm or less, 600 ppm or less, or 500 ppm or less. From these viewpoints, the content of silver zeolite is preferably 50 to 1000 ppm.
- organic antibacterial agent examples include hydroxamic acid compounds (compounds having a hydroxamic acid skeleton), imidazole compounds (compounds having an imidazole skeleton, excluding compounds corresponding to hydroxamic acid compounds), 1,2-benzoisothiazole-3 (2H). )-On, citric acid, malic acid, tannic acid, glutamic acid, fumic acid, oleic acid, tartrate acid, baikarain, persimmon tannin, pyrogallol, eugenol and the like.
- the imidazole ring of the imidazole compound includes an alkyl group, a hydroxyl group, a carboxyl group, and a cyclic group (benzene ring, thiazole ring, isothiazolin ring, thiazolin ring, isothiazolin ring, benzothiazolin ring, benzoisothiazolin ring, thiazolinone ring, isothiazolinone ring, benzo.
- Substituents such as thiazolinone ring, benzoisothiazolinone ring, etc.), mercapto group, alkoxy group and the like may be bonded.
- the organic antibacterial agent may contain a compound having an amide bond.
- the organic antibacterial agent may contain at least one selected from the group consisting of a compound containing a nitrogen atom and a compound containing a sulfur atom (excluding a compound containing a nitrogen atom).
- the organic antibacterial agent does not have to have a carboxyl group.
- the organic antibacterial agent does not have to have a cyclic structure.
- hydroxamic acid compound at least one selected from the group consisting of hydroxamic acid and hydroxamic acid derivatives (compounds having a hydroxamic acid skeleton (excluding hydroxamic acid)) can be used.
- the hydroxamic acid compound is at least one selected from the group consisting of the compound represented by the following general formula (1) and a salt thereof from the viewpoint of easily improving the deodorizing performance and easily suppressing yellowing over time. It is preferable to include it.
- the salt include alkali metal salts (for example, sodium salts), ammonium salts and the like.
- the organic antibacterial agent may contain a hydroxamic acid compound having no cyclic structure.
- R is a linear alkyl group having 1 to 7 carbon atoms, a branched alkyl group having 3 to 7 carbon atoms, a phenyl group, a hydroxyphenyl group, an amino group, a naphthyl group, a pyridyl group or a butoxy group.
- An aromatic alkyl group having, an alkyl group having a benzamide structure, or an alkyl group having a phenylcarbamoyl group is shown.
- the carbon number of the linear alkyl group or branched alkyl group of R in the formula (1) may exceed 1, and may be 2 or more, 3 or more, 5 or more, or 6 or more.
- the carbon number of the linear alkyl group or the branched alkyl group of R in the formula (1) may be less than 7, 6 or less, 5 or less, 3 or less, or 2 or less.
- Hydroxamic acid compounds include hydroxamic acid, octanohydroxamic acid, acetohydroxamic acid, benzohydroxamic acid, benzenesulfohydroxamic acid, naphthohydroxamic acid, N-methylflohydroxamic acid, salicylhydroxamic acid, hydroxyurea, 2- (4-).
- the imidazole compound examples include a benzimidazole compound (a compound having a benzimidazole skeleton) and an imidazole compound that does not correspond to a benzimidazole compound (an imidazole compound having no benzimidazole skeleton, for example, imidazole).
- a benzimidazole compound a compound having a benzimidazole skeleton (excluding benzimidazole)
- a benzimidazole derivative a compound having a benzimidazole skeleton (excluding benzimidazole)
- the imidazole ring and / or benzene ring in the benzoimidazole compound includes an alkyl group, a hydroxyl group, a carboxyl group, and a cyclic group (benzene ring, thiazole ring, isothiazolin ring, thiazolin ring, isothiazolin ring, benzothiazolin ring, benzoisothiazolin ring, thiazolinone).
- a substituent such as a ring, an isothiazolinone ring, a benzothiazolinone ring, a benzoisothiazolinone ring, etc.), a mercapto group, an alkoxy group, etc. may be bonded.
- Benzimidazole derivatives include thiabendazole (also known as 2- (4-thiazolyl) -benzimidazole), 2-mercaptobenzimidazole, 2-mercapto-5-methoxybenzimidazole, 2-mercapto-5-ethoxybenzoimidazole, 2-mercapto. -5-Methylbenzimidazole, 2-mercapto-5-ethylbenzimidazole, 2-methoxycarbonylaminobenzimidazole, cambendazole, mebendazole, fenbendazole, oxfendazole, oxybendazole, albendazole, albendazole sulfoxide, Examples thereof include triclabenzazole.
- the organic antibacterial agent preferably contains a compound capable of coordinating with silver ions from the viewpoint of further suppressing yellowing over time. It is presumed that by using a compound capable of coordinating with silver ions as an organic antibacterial agent, yellowing is further suppressed by coordinating the organic antibacterial agent with silver ions of silver zeolite. However, the cause is not limited to the content.
- Compounds that can be coordinated to silver ions include hydroxamic acid compounds (acetohydroxamic acid, sodium acetohydroxamic acid, octanohydroxamic acid, sodium octanohydroxamic acid, benzohydroxamic acid, sodium benzohydroxamic acid, salicylhydroxamic acid, etc.), Examples thereof include imidazole compounds (benzoimidazole compounds such as thiabendazole), citric acid, malic acid, tannic acid, glutamate, hydroxamic acid, oleic acid, tartrate acid, baicalene, persimmon tannin, pyrogallol, eugenol and the like.
- hydroxamic acid compounds acetohydroxamic acid, sodium acetohydroxamic acid, octanohydroxamic acid, sodium octanohydroxamic acid, benzohydroxamic acid, sodium benzohydro
- the organic antibacterial agent preferably contains at least one selected from the group consisting of hydroxamic acid compounds and imidazole compounds from the viewpoint of easily improving deodorant performance and easily suppressing yellowing over time.
- the organic antibacterial agent is easy to further improve the deodorant performance, and is easy to suppress yellowing when 3 days (72 hours) have passed since the deodorant composition was prepared (for example, the deodorant composition).
- the organic antibacterial agent tends to suppress yellowing when one day (24 hours) has passed since the deodorant composition was prepared (for example, the deodorant composition has a temperature of 70 ⁇ 2 ° C. and a relative humidity of 90 ⁇ 2).
- the deodorant composition has a temperature of 70 ⁇ 2 ° C. and a relative humidity of 90 ⁇ 2).
- the molecular weight of the organic antibacterial agent is preferably in the following range from the viewpoint of easily improving the deodorizing performance and easily suppressing yellowing over time.
- the molecular weight of the organic antibacterial agent is preferably 68 or more, 70 or more, or 75 or more.
- the molecular weight of the organic antibacterial agent is preferably 400 or less, 350 or less, 300 or less, 250 or less, 230 or less, 210 or less, or 205 or less. From these viewpoints, the molecular weight of the organic antibacterial agent is preferably 68 to 400.
- the molecular weight of the organic antibacterial agent may be 80 or more, 90 or more, 100 or more, 110 or more, 115 or more, 120 or more, 150 or more, 180 or more, or 200 or more.
- the molecular weight of the organic antibacterial agent may be 200 or less, 180 or less, 160 or less, 150 or less, 130 or less, 120 or less, 100 or less, 90 or less, or 80 or less.
- the organic antibacterial agent when the deodorant composition contains a water-absorbent resin, the organic antibacterial agent has an amount of ammonia generated measured by the following procedures (a1) to (a3) of 1500 ppm.
- a1 to (a3) 1500 ppm.
- 1200 ppm or less, 1000 ppm or less, 800 ppm or less, 500 ppm or less, 450 ppm or less, 400 ppm or less, 200 ppm or less, 100 ppm or less, 50 ppm or less, 30 ppm or less, 10 ppm or less, or 5 ppm or less may be given.
- A1 Urea 25.0 g, sodium chloride 9.0 g, magnesium sulfate heptahydrate 0.6 g, calcium lactate 0.7 g, potassium sulfate 4.0 g, ammonium sulfate 2.5 g, and water (for example, distilled water). Mix to obtain 1000 g of aqueous solution.
- A2 A test solution is obtained by mixing 30.0 g of the aqueous solution and 1.0 mL of a 10 U / mL urease aqueous solution.
- A3 Deodorant composition (silver zeolite, organic antibacterial agent, water-absorbent resin, and the content of silver zeolite is 500 ppm based on the total mass of the water-absorbent resin, and the organic antibacterial agent.
- 1.0 g of a water-absorbent resin composition having a content of 1000 ppm and the balance of which is composed of a water-absorbent resin is swollen in the test solution (a mixture of 30.0 g of the above-mentioned aqueous solution and 1.0 mL of a zeolite aqueous solution). Then, the amount of ammonia generated when 24 hours have passed (24 hours have passed since the swelling) at a temperature of 35 ⁇ 2 ° C. is measured.
- the deodorant composition after swelling is sealed in 900 mL of dry air enclosed in a 2 L bag, and then the bag containing the deodorant composition after swelling is placed at a temperature of 35 ⁇ 2 ° C. and a relative humidity of 60. Hold at ⁇ 2% for 24 hours and measure the amount of ammonia generated.
- the organic antibacterial agent has an amount of ammonia generated measured by the following procedures (b1) to (b3) of 2500 ppm or less, 2000 ppm or less, 1500 ppm or less, 1200 ppm or less. 1100 ppm or less, 1000 ppm or less, 800 ppm or less, 700 ppm or less, or 600 ppm or less may be given.
- (B1) Urea 25.0 g, sodium chloride 9.0 g, magnesium sulfate heptahydrate 0.6 g, calcium lactate 0.7 g, potassium sulfate 4.0 g, ammonium sulfate 2.5 g, and water (for example, distilled water).
- a test solution is obtained by mixing 30.0 g of the aqueous solution and 1.0 mL of a 30 U / mL urease aqueous solution.
- the test solution (described above) is applied to the entire fluff pulp in the absorber obtained by sequentially spraying 1.875 g of fluff pulp, 0.001 g of silver zeolite, 0.005 g of an organic antibacterial agent and 0.625 g of fluff pulp.
- the amount of ammonia generated is measured when 24 hours have passed (24 hours have passed since the permeation) at a temperature of 35 ⁇ 2 ° C.
- the content of the organic antibacterial agent is preferably in the following range based on the total mass of the water-absorbent resin from the viewpoint of easily improving the deodorizing performance and easily suppressing yellowing over time.
- the content of the organic antibacterial agent is preferably 100 ppm or more, 200 ppm or more, 300 ppm or more, 400 ppm or more, 500 ppm or more, 600 ppm or more, 700 ppm or more, 800 ppm or more, 900 ppm or more, or 1000 ppm or more.
- the content of the organic antibacterial agent is preferably 3000 ppm or less, 2500 ppm or less, 2000 ppm or less, 1500 ppm or less, 1200 ppm or less, or 1000 ppm or less. From these viewpoints, the content of the organic antibacterial agent is preferably 100 to 3000 ppm.
- the total amount of silver zeolite and organic antibacterial agent is preferably in the following range based on the total mass of the water-absorbent resin from the viewpoint of easily improving the deodorizing performance and easily suppressing yellowing over time.
- the total amount is preferably 150 ppm or more, 200 ppm or more, 300 ppm or more, 400 ppm or more, 500 ppm or more, 600 ppm or more, 700 ppm or more, 800 ppm or more, 900 ppm or more, or 1000 ppm or more.
- the total amount is preferably 5000 ppm or less, 4000 ppm or less, 3000 ppm or less, 2500 ppm or less, 2000 ppm or less, 1500 ppm or less, 1200 ppm or less, or 1000 ppm or less. From these viewpoints, the total amount is preferably 150 to 5000 ppm.
- the content of the organic antibacterial agent is preferably in the following range with respect to 100 parts by mass of silver zeolite from the viewpoint of easily improving the deodorizing performance and easily suppressing yellowing over time.
- the content of the organic antibacterial agent is 10 parts by mass or more, 20 parts by mass or more, 30 parts by mass or more, 50 parts by mass or more, 80 parts by mass or more, 100 parts by mass or more, 120 parts by mass or more, 150 parts by mass or more, 180 parts by mass. It is preferably parts by mass or more, or 200 parts by mass or more.
- the content of the organic antibacterial agent is preferably 2000 parts by mass or less, 1500 parts by mass or less, 1000 parts by mass or less, 800 parts by mass or less, 500 parts by mass or less, 300 parts by mass or less, or 200 parts by mass or less. From these viewpoints, the content of the organic antibacterial agent is preferably 10 to 2000 parts by mass, more preferably 50 to 500 parts by mass, and further preferably 100 to 300 parts by mass.
- the deodorant composition according to the present embodiment may contain inorganic particles of a gel stabilizer; a fluidity improver (lubricant) as other additives.
- examples of the inorganic particles include silica particles such as amorphous silica.
- the absorber according to the present embodiment contains the deodorant composition according to the present embodiment. That is, in the absorber according to the present embodiment, a portion where the silver zeolite and the organic antibacterial agent come into contact with each other (for example, a portion where the silver zeolite and the organic antibacterial agent coexist) exists in any of the absorbers. (At least part of the silver zeolite is in contact with the organic antibacterial agent). For example, the organic antibacterial agent may come into contact with the silver zeolite attached to the fibrous material described later, and the silver zeolite may come into contact with the organic antibacterial agent attached to the fibrous material.
- the content of silver zeolite is preferably in the following range based on the total mass of the absorber from the viewpoint of easily improving the deodorizing performance.
- the content of silver zeolite is preferably 10 ppm or more, 50 ppm or more, 70 ppm or more, 90 ppm or more, 120 ppm or more, 150 ppm or more, 180 ppm or more, 200 ppm or more, 250 ppm or more, or 300 ppm or more.
- the content of silver zeolite is preferably 1000 ppm or less, 900 ppm or less, 800 ppm or less, 700 ppm or less, 600 ppm or less, or 500 ppm or less. From these viewpoints, the content of silver zeolite is preferably 10 to 1000 ppm.
- the content of the organic antibacterial agent is preferably in the following range based on the total mass of the absorber from the viewpoint of easily improving the deodorizing performance.
- the content of the organic antibacterial agent is preferably 30 ppm or more, 60 ppm or more, 90 ppm or more, 120 ppm or more, 150 ppm or more, 200 ppm or more, 250 ppm or more, 300 ppm or more, 400 ppm or more, or 500 ppm or more.
- the content of the organic antibacterial agent is preferably 3000 ppm or less, 2500 ppm or less, 2000 ppm or less, 1800 ppm or less, 1500 ppm or less, 1000 ppm or less, 800 ppm or less, or 700 ppm or less. From these viewpoints, the content of the organic antibacterial agent is preferably 30 to 3000 ppm or 30 to 2000 ppm.
- the total amount of silver zeolite and organic antibacterial agent is preferably in the following range based on the total mass of the absorber from the viewpoint of easily improving the deodorizing performance.
- the total amount is preferably 40 ppm or more, 100 ppm or more, 150 ppm or more, 200 ppm or more, 250 ppm or more, 300 ppm or more, 400 ppm or more, 500 ppm or more, 600 ppm or more, or 800 ppm or more.
- the total amount is preferably 4000 ppm or less, 3500 ppm or less, 3000 ppm or less, 2500 ppm or less, 2000 ppm or less, 1500 ppm or less, or 1200 ppm or less. From these viewpoints, the total amount is preferably 40 to 4000 ppm or 40 to 3000 ppm.
- the absorber according to the present embodiment may contain a fibrous substance, for example, a deodorant composition and a mixture containing the fibrous substance.
- the structure of the absorber may be, for example, a structure in which the deodorant composition and the fibrous material are uniformly mixed, and the deodorant composition is sandwiched between the fibrous material formed in the form of a sheet or a layer. It may be a configuration or another configuration.
- the fibrous material examples include finely pulverized wood pulp; cotton; cotton linter; rayon; cellulose-based fibers such as cellulose acetate; synthetic fibers such as polyamide, polyester and polyolefin; and a mixture of these fibers.
- hydrophilic fibers can be used as the fibrous material.
- the fibers may be adhered to each other by adding an adhesive binder to the fibrous material.
- the adhesive binder include heat-sealing synthetic fibers, hot melt adhesives, and adhesive emulsions.
- the heat-bondable synthetic fiber examples include a total fusion type binder such as polyethylene, polypropylene, and an ethylene-propylene copolymer; a non-total fusion type binder having a side-by-side or core-sheath structure of polypropylene and polyethylene.
- a total fusion type binder such as polyethylene, polypropylene, and an ethylene-propylene copolymer
- non-total fusion type binder having a side-by-side or core-sheath structure of polypropylene and polyethylene.
- hot melt adhesives examples include ethylene-vinyl acetate copolymer, styrene-isoprene-styrene block copolymer, styrene-butadiene-styrene block copolymer, styrene-ethylene-butylene-styrene block copolymer, and styrene-ethylene-propylene-styrene block copolymer.
- a mixture of a base polymer such as amorphous polypropylene and a tackifier, a plasticizer, an antioxidant and the like.
- Examples of the adhesive emulsion include polymers of at least one monomer selected from the group consisting of methyl methacrylate, styrene, acrylonitrile, 2-ethylhexyl acrylate, butyl acrylate, butadiene, ethylene, and vinyl acetate.
- the absorber according to the present embodiment includes silver zeolite, an organic antibacterial agent and a water-absorbent resin, and inorganic particles (excluding silver zeolite, for example, amorphous silica), which are different from the constituents of the deodorant composition according to the present embodiment.
- inorganic particles excluding silver zeolite, for example, amorphous silica
- Pigments, dyes, fragrances, adhesives and the like may be contained.
- the shape of the absorber according to this embodiment may be, for example, a sheet shape.
- the thickness of the absorber (for example, the thickness of the sheet-shaped absorber) may be 0.1 to 20 mm or 0.3 to 15 mm.
- the content of the deodorant composition in the absorber is 2 to 2 to the total of the deodorant composition and the fibrous material from the viewpoint of easily obtaining sufficient absorption characteristics. 95% by mass, 10 to 80% by mass or 20 to 60% by mass is preferable.
- the content of the deodorant composition in the absorber is 0 with respect to the total of the deodorant composition and the fibrous material from the viewpoint of easily obtaining sufficient absorption characteristics. It is preferably 0.01 to 1% by mass, 0.1 to 0.8% by mass or 0.2 to 0.5% by mass.
- the content of the deodorant composition in the absorber is preferably 100 to 1000 g, 150 to 800 g, or 200 to 700 g per 1 m 2 of the absorber from the viewpoint of easily obtaining sufficient absorption characteristics.
- the content of the fibrous substance in the absorber is preferably 50 to 800 g, 100 to 600 g, or 150 to 500 g per 1 m 2 of the absorber from the viewpoint of easily obtaining sufficient absorption characteristics.
- the absorbent article according to the present embodiment includes an absorber according to the present embodiment.
- a deodorant composition containing silver zeolite and an organic antibacterial agent (deodorant composition not included in the absorber); Core wrap that retains the shape and prevents the constituents of the absorber from falling off or flowing; a liquid permeable sheet that is placed on the outermost side of the side where the liquid to be absorbed enters; Is a liquid permeable sheet or the like arranged on the outermost side on the opposite side.
- the absorbent article according to the present embodiment may include an absorbent body, a core wrap, a liquid permeable sheet and a liquid impermeable sheet according to the present embodiment.
- the deodorant composition in the absorbent body of the absorbent article according to the present embodiment may or may not contain a water-absorbent resin.
- the absorbent article according to the present embodiment may include an absorber containing a deodorant composition that does not contain a water-absorbent resin, and a member that contains a water-absorbent resin. That is, the absorbent article according to the present embodiment may contain a water-absorbent resin, and in the absorbent article according to the present embodiment, the water-absorbent resin is different from the silver zeolite and the organic antibacterial agent in the deodorant composition. May be in position.
- the absorbent article include diapers (for example, paper diapers), toilet training pants, incontinence pads, sanitary materials (sanitary napkins, etc.), sweat pads, pet sheets, toilet members, animal excrement treatment materials, and the like.
- FIG. 1 is a cross-sectional view showing an example of an absorbent article.
- the absorbent article 100 shown in FIG. 1 includes an absorbent body 10, core wraps 20a and 20b, a liquid permeable sheet 30, and a liquid permeable sheet 40.
- the liquid permeable sheet 40, the core wrap 20b, the absorbent body 10, the core wrap 20a, and the liquid permeable sheet 30 are laminated in this order.
- the absorber 10 has water-absorbent resin particles 10a made of a water-absorbent resin composition and a fiber layer 10b containing a fibrous material.
- the water-absorbent resin particles 10a are dispersed in the fiber layer 10b.
- the core wrap 20a is arranged on one side of the absorber 10 (upper side of the absorber 10 in FIG. 1) in contact with the absorber 10.
- the core wrap 20b is arranged on the other side of the absorber 10 (lower side of the absorber 10 in FIG. 1) in contact with the absorber 10.
- the absorber 10 is arranged between the core wrap 20a and the core wrap 20b.
- Examples of the core wraps 20a and 20b include tissues, non-woven fabrics, woven fabrics, synthetic resin films having liquid permeation holes, net-like sheets having a mesh, and the like.
- the core wrap 20a and the core wrap 20b have a main surface having the same size as the absorber 10.
- the liquid permeable sheet 30 is arranged on the outermost side on the side where the liquid to be absorbed enters.
- the liquid permeable sheet 30 is arranged on the core wrap 20a in contact with the core wrap 20a.
- Examples of the liquid permeable sheet 30 include non-woven fabrics made of synthetic resins such as polyethylene, polypropylene, polyester and polyamide, and porous sheets.
- the liquid permeable sheet 40 is arranged on the outermost side of the absorbent article 100 on the opposite side of the liquid permeable sheet 30.
- the liquid impermeable sheet 40 is arranged under the core wrap 20b in contact with the core wrap 20b.
- liquid impermeable sheet 40 examples include a sheet made of a synthetic resin such as polyethylene, polypropylene, and polyvinyl chloride, and a sheet made of a composite material of these synthetic resins and a non-woven fabric.
- the liquid permeable sheet 30 and the liquid permeable sheet 40 have, for example, a main surface wider than the main surface of the absorber 10, and the outer edges of the liquid permeable sheet 30 and the liquid permeable sheet 40 are It extends around the absorber 10 and the core wraps 20a, 20b.
- the magnitude relationship between the absorbent body 10, the core wraps 20a and 20b, the liquid permeable sheet 30, and the liquid permeable sheet 40 is not particularly limited, and is appropriately adjusted according to the use of the absorbent article and the like. Further, the method of retaining the shape of the absorber 10 using the core wraps 20a and 20b is not particularly limited, and as shown in FIG. 1, the absorber may be wrapped by a plurality of core wraps, and the absorber is wrapped by one core wrap. But it may be.
- the absorber may be adhered to the top sheet.
- a hot melt adhesive is applied to the top sheet at predetermined intervals in a striped shape, a spiral shape, etc. in the width direction and adhered; starch, carboxymethyl cellulose, polyvinyl alcohol, polyvinylpyrrolidone, etc. Examples thereof include a method of adhering using a water-soluble binder such as a water-soluble polymer.
- a method of adhering by heat-sealing of the heat-sealing synthetic fibers may be adopted.
- Example A1 20 g of water-absorbent resin (Aquakeep SA60S manufactured by Sumitomo Seika Co., Ltd., crosslinked polymer having structural units derived from partially neutralized acrylic acid, water absorption of physiological saline 60 g / g, medium particle size 342 ⁇ m)
- Zeomic HD10N manufactured by Sinanen Zeomic Co., Ltd., silver zeolite (synthetic zeolite) containing silver ion and zinc ion, average particle size 1 to 2 ⁇ m
- octanohydroxamic acid organic antibacterial agent
- octanohydroxamic acid organic antibacterial agent
- the above dry blend was performed by the following method. First, each material to be mixed is put into a container having an internal volume of 1 L at a predetermined ratio, and the above-mentioned is described under the conditions of a rotation speed of 50 rpm and a revolution speed of 50 rpm using a cross rotary mixer manufactured by Meiwa Kogyo Co., Ltd. Each material in the container was mixed by rotating for hours.
- the amount of water absorbed by the physiological saline of the water-absorbent resin was measured by the following procedure. That is, 500 g of saline solution is placed in a beaker having a volume of 500 mL, and then water absorption is performed so that maco does not occur while stirring the saline solution at 600 rpm using a magnetic stirrer bar (8 mm ⁇ ⁇ 30 mm, without ring). 2.0 g of the resin was dispersed in physiological saline. The mixture was left to stand for 60 minutes in a stirred state, and the water-absorbent resin was sufficiently swollen to obtain a swollen gel.
- the contents of the beaker are put into a standard sieve having a mass of Wa [g] and an opening of 75 ⁇ m, filtered, and left for 30 minutes with the standard sieve tilted so as to have an inclination angle of about 30 ° with respect to the horizontal. As a result, excess water was filtered off.
- the medium particle size of the water-absorbent resin was measured by the following procedure. That is, a JIS standard sieve with an opening of 850 ⁇ m, a sieve with an opening of 600 ⁇ m, a sieve with an opening of 500 ⁇ m, a sieve with an opening of 425 ⁇ m, a sieve with an opening of 300 ⁇ m, a sieve with an opening of 250 ⁇ m, a sieve with an opening of 150 ⁇ m, and The saucers were combined in order from the top. 5 g of water-absorbent resin was classified using a continuous fully automatic sonic vibration type sieving measuring instrument (robot shifter RPS-205, manufactured by Seishin Enterprise Co., Ltd.).
- the mass of the particles remaining on each sieve was calculated as a mass percentage with respect to the total amount, and the particle size distribution was obtained.
- the relationship between the mesh size of the sieve and the integrated value of the mass percentage of the particles on the sieve was plotted on logarithmic probability paper by integrating the particles on the sieve in order from the one having the largest particle diameter. By connecting the plots on the probability paper with a straight line, the particle size corresponding to the cumulative mass percentage of 50% by mass was obtained as the medium particle size.
- Example A2 A particulate deodorant composition was obtained in the same manner as in Example A1 except that acetohydroxamic acid was used instead of octanohydroxamic acid.
- the content of silver zeolite was 500 ppm based on the total mass of the water-absorbent resin, and the content of acetohydroxamic acid was 1000 ppm based on the total mass of the water-absorbent resin.
- Example A3 A particulate deodorant composition was obtained in the same manner as in Example A1 except that thiabendazole was used instead of octanohydroxamic acid.
- the content of silver zeolite was 500 ppm based on the total mass of the water-absorbent resin, and the content of thiabendazole was 1000 ppm based on the total mass of the water-absorbent resin.
- Example A1 A particulate deodorant composition was obtained in the same manner as in Example A1 except that octanohydroxamic acid was not used.
- the content of silver zeolite was 500 ppm based on the total mass of the water-absorbent resin.
- urease manufactured by MERCK, derived from tachinata beans, 50% glycerin solution, 1000 U / mL
- aqueous urease solution 10 U / mL
- a test solution was prepared by mixing 30.0 g of the above-mentioned artificial urine and 1.0 mL of the above-mentioned urease aqueous solution. Next, 1.0 g of the deodorant composition was placed in a sterilized petri dish (inner diameter 88 mm) as a sample, and then the above test solution was added to swell the sample. After adding the test solution, the petri dish was promptly sealed in a 2 L tedler bag, and then the air in the bag was evacuated.
- the above 2L tedler bag was stored for 24 hours in a tabletop constant temperature and humidity chamber set at a temperature of 35 ⁇ 2 ° C. and a relative humidity of 60 ⁇ 2%. Then, the amount of ammonia generated was measured using a gas detector tube (manufactured by Gastec Co., Ltd., detector tube: 3 types of ammonia 3L, 3La, 3M). The results are shown in Table 1.
- the test for coloration of the sample over time was performed according to the following procedure. First, 2.0 g of the sample was uniformly placed in a glass container (cylindrical, inner diameter 3 cm, depth 1 cm). The container was stored for 1 or 3 days in a tabletop constant temperature and humidity chamber set at a temperature of 70 ⁇ 2 ° C. and a relative humidity of 90 ⁇ 2%. After the lapse of days, the container was taken out from the constant temperature and humidity chamber and left for a while to cool to room temperature. Then, using the whole amount of the sample, the yellowness was obtained by the same procedure as above. The results are shown in Table 1.
- Example B1 1.875 g of fluff pulp was uniformly sprayed in an area of 60 mm ⁇ 60 mm in a sterile petri dish (inner diameter: 88 mm). Next, 0.001 g of Zeomic HD10N (manufactured by Sinanen Zeomic Co., Ltd., silver zeolite (synthetic zeolite) containing silver ions and zinc ions, average particle size 1 to 2 ⁇ m) was sprinkled near the center of the sterilized petri dish.
- Zeomic HD10N manufactured by Sinanen Zeomic Co., Ltd., silver zeolite (synthetic zeolite) containing silver ions and zinc ions, average particle size 1 to 2 ⁇ m
- the mixture was placed on the fluff pulp by sprinkling 0.005 g of octanohydroxamic acid (organic antibacterial agent).
- An absorber was obtained by further sprinkling 0.625 g of fluff pulp on this mixture (total amount of pulp used: 2.5 g).
- Example B2 An absorber was obtained in the same manner as in Example B1 except that acetohydroxamic acid was used instead of octanohydroxamic acid.
- Example B3 An absorber was obtained in the same manner as in Example B1 except that thiabendazole was used instead of octanohydroxamic acid.
- urease manufactured by MERCK, derived from tachinata beans, 50% glycerin solution, 1000 U / mL
- aqueous urease solution prepared by MERCK, derived from tachinata beans, 50% glycerin solution, 1000 U / mL
- test solution was prepared by mixing 30.0 g of the above-mentioned artificial urine and 1.0 mL of the above-mentioned urease aqueous solution. Next, 30 mL of this test solution was poured into the above-mentioned petri dish, and the test solution was allowed to permeate the entire fluff pulp of the absorber. After the test solution was added, the petri dish was promptly sealed in a 2L tedler bag, and then the air in the bag was evacuated.
- the above 2L tedler bag was stored for 24 hours in a tabletop constant temperature and humidity chamber set at a temperature of 35 ⁇ 2 ° C. and a relative humidity of 60 ⁇ 2%. Then, the amount of ammonia generated was measured using a gas detector tube (manufactured by Gastec Co., Ltd., detector tube: 3 types of ammonia 3L, 3La, 3M). The results are shown in Table 2.
- 10 Absorbent, 10a ... Water-absorbent resin particles, 10b ... Fiber layer, 20a, 20b ... Core wrap, 30 ... Liquid permeable sheet, 40 ... Liquid permeable sheet, 100 ... Absorbent article.
Abstract
Description
(A1)尿素25.0g、塩化ナトリウム9.0g、硫酸マグネシウム7水和物0.6g、乳酸カルシウム0.7g、硫酸カリウム4.0g、硫酸アンモニウム2.5g、及び、水(例えば蒸留水)を混合して1000gの水溶液を得る。
(A2)前記水溶液30.0gと10U/mLのウレアーゼ水溶液1.0mLとを混合して試験液を得る。
(A3)防臭剤組成物1.0gを前記試験液(上述の水溶液30.0gとウレアーゼ水溶液1.0mLとの混合液)に膨潤させた後、温度35±2℃で24時間経過(膨潤してから24時間経過)したときのアンモニアの発生量を測定する。
(B1)尿素25.0g、塩化ナトリウム9.0g、硫酸マグネシウム7水和物0.6g、乳酸カルシウム0.7g、硫酸カリウム4.0g、硫酸アンモニウム2.5g、及び、水(例えば蒸留水)を混合して1000gの水溶液を得る。
(B2)前記水溶液30.0gと30U/mLのウレアーゼ水溶液1.0mLとを混合して試験液を得る。
(B3)フラッフパルプ1.875g、銀ゼオライト0.001g、有機系抗菌剤0.005g及びフラッフパルプ0.625gを順に散布することにより得られる吸収体におけるフラッフパルプの全体に前記試験液(上述の水溶液30.0gとウレアーゼ水溶液1.0mLとの混合液)を浸透させた後、温度35±2℃で24時間経過(浸透してから24時間経過)したときのアンモニアの発生量を測定する。
(a1)尿素25.0g、塩化ナトリウム9.0g、硫酸マグネシウム7水和物0.6g、乳酸カルシウム0.7g、硫酸カリウム4.0g、硫酸アンモニウム2.5g、及び、水(例えば蒸留水)を混合して1000gの水溶液を得る。
(a2)前記水溶液30.0gと10U/mLのウレアーゼ水溶液1.0mLとを混合して試験液を得る。
(a3)防臭剤組成物(銀ゼオライトと、有機系抗菌剤と、吸水性樹脂と、を含み、吸水性樹脂の全質量を基準として、銀ゼオライトの含有量が500ppmであり、有機系抗菌剤の含有量が1000ppmであり、残部を吸水性樹脂が構成する、吸水性樹脂組成物)1.0gを前記試験液(上述の水溶液30.0gとウレアーゼ水溶液1.0mLとの混合液)に膨潤させた後、温度35±2℃で24時間経過(膨潤してから24時間経過)したときのアンモニアの発生量を測定する。
(b1)尿素25.0g、塩化ナトリウム9.0g、硫酸マグネシウム7水和物0.6g、乳酸カルシウム0.7g、硫酸カリウム4.0g、硫酸アンモニウム2.5g、及び、水(例えば蒸留水)を混合して1000gの水溶液を得る。
(b2)前記水溶液30.0gと30U/mLのウレアーゼ水溶液1.0mLとを混合して試験液を得る。
(b3)フラッフパルプ1.875g、銀ゼオライト0.001g、有機系抗菌剤0.005g及びフラッフパルプ0.625gを順に散布することにより得られる吸収体におけるフラッフパルプの全体に前記試験液(上述の水溶液30.0gとウレアーゼ水溶液1.0mLとの混合液)を浸透させた後、温度35±2℃で24時間経過(浸透してから24時間経過)したときのアンモニアの発生量を測定する。
<防臭剤組成物の作製>
(実施例A1)
吸水性樹脂(住友精化株式会社製、アクアキープSA60S、アクリル酸部分中和物に由来する構造単位を有する架橋重合体、生理食塩水の吸水量60g/g、中位粒子径342μm)20gに対して、0.010gのゼオミックHD10N(シナネンゼオミック株式会社製、銀イオン及び亜鉛イオンを含有する銀ゼオライト(合成ゼオライト)、平均粒子径1~2μm)を加えた後、15分間ドライブレンドした。続いて、0.020gのオクタノヒドロキサム酸(有機系抗菌剤)を加えた後、30分間ドライブレンドすることにより粒子状の防臭剤組成物を得た。銀ゼオライトの含有量は、吸水性樹脂の全質量を基準として500ppmであり、オクタノヒドロキサム酸の含有量は、吸水性樹脂の全質量を基準として1000ppmであった。
生理食塩水の吸水量=(Wb-Wa)/2.0
オクタノヒドロキサム酸の代わりにアセトヒドロキサム酸を用いたこと以外は実施例A1と同様にして粒子状の防臭剤組成物を得た。銀ゼオライトの含有量は、吸水性樹脂の全質量を基準として500ppmであり、アセトヒドロキサム酸の含有量は、吸水性樹脂の全質量を基準として1000ppmであった。
オクタノヒドロキサム酸の代わりにチアベンダゾールを用いたこと以外は実施例A1と同様にして粒子状の防臭剤組成物を得た。銀ゼオライトの含有量は、吸水性樹脂の全質量を基準として500ppmであり、チアベンダゾールの含有量は、吸水性樹脂の全質量を基準として1000ppmであった。
オクタノヒドロキサム酸を用いなかったこと以外は実施例A1と同様にして粒子状の防臭剤組成物を得た。銀ゼオライトの含有量は、吸水性樹脂の全質量を基準として500ppmであった。
吸水性樹脂(住友精化株式会社製、アクアキープSA60S、生理食塩水の吸水量60g/g、中位粒子径342μm)をそのまま用いた。
尿素25.0g、塩化ナトリウム9.0g、硫酸マグネシウム7水和物0.6g、乳酸カルシウム0.7g、硫酸カリウム4.0g、硫酸アンモニウム2.5g、及び、蒸留水を混合して各成分を溶解させることにより合計1000gの人工尿を調製した。
上記試料2.0gをガラス製の測定容器(円筒状、内径3cm)に入れた。その試料の黄色度の算出のため、標準用白板を用いて、測色色差計の三刺激値であるX、Y及びZを補正した色差計(Color Meter ZE6000、日本電色工業株式会社製)で測定した。X、Y及びZ(三刺激値)の測定結果に基づき下記式(A)より黄色度の初期値を得た。結果を表1に示す。
黄色度=100×(1.2769×X-1.0592×Z)/Y …(A)
<吸収体の作製>
(実施例B1)
フラッフパルプ1.875gを滅菌シャーレ(内径:88mm)内の60mm×60mmの範囲に均一に散布した。次に、滅菌シャーレの中心付近において、0.001gのゼオミックHD10N(シナネンゼオミック株式会社製、銀イオン及び亜鉛イオンを含有する銀ゼオライト(合成ゼオライト)、平均粒子径1~2μm)を撒いた後、0.005gのオクタノヒドロキサム酸(有機系抗菌剤)を撒くことにより、フラッフパルプ上に混合物を配置した。この混合物上に0.625gのフラッフパルプを更に撒くことにより吸収体を得た(パルプ合計使用量:2.5g)。
オクタノヒドロキサム酸の代わりにアセトヒドロキサム酸を用いたこと以外は実施例B1と同様にして吸収体を得た。
オクタノヒドロキサム酸の代わりにチアベンダゾールを用いたこと以外は実施例B1と同様にして吸収体を得た。
オクタノヒドロキサム酸を用いなかったこと以外は実施例B1と同様にして吸収体を得た。
尿素25.0g、塩化ナトリウム9.0g、硫酸マグネシウム7水和物0.6g、乳酸カルシウム0.7g、硫酸カリウム4.0g、硫酸アンモニウム2.5g、及び、蒸留水を混合して各成分を溶解させることにより合計1000gの人工尿を調製した。
Claims (15)
- 吸収性物品において用いられる防臭剤組成物であって、
銀ゼオライトと、有機系抗菌剤と、を含む、防臭剤組成物。 - 前記吸収性物品が吸水性樹脂を含む、請求項1に記載の防臭剤組成物。
- 銀ゼオライトと、有機系抗菌剤と、吸水性樹脂と、を含む、防臭剤組成物。
- 前記吸水性樹脂が、エチレン性不飽和単量体に由来する構造単位を有する、請求項2又は3に記載の防臭剤組成物。
- 前記エチレン性不飽和単量体が、(メタ)アクリル酸及びその塩からなる群より選ばれる少なくとも一種を含む、請求項4に記載の防臭剤組成物。
- 前記銀ゼオライトの含有量が、前記吸水性樹脂の全質量を基準として50~1000ppmである、請求項2~5のいずれか一項に記載の防臭剤組成物。
- 下記(A1)~(A3)の手順により測定されるアンモニアの発生量が1500ppm以下である、請求項2~6のいずれか一項に記載の防臭剤組成物。
(A1)尿素25.0g、塩化ナトリウム9.0g、硫酸マグネシウム7水和物0.6g、乳酸カルシウム0.7g、硫酸カリウム4.0g、硫酸アンモニウム2.5g、及び、水を混合して1000gの水溶液を得る。
(A2)前記水溶液30.0gと10U/mLのウレアーゼ水溶液1.0mLとを混合して試験液を得る。
(A3)防臭剤組成物1.0gを前記試験液に膨潤させた後、温度35±2℃で24時間経過したときのアンモニアの発生量を測定する。 - 前記有機系抗菌剤が、銀イオンに配位可能な化合物を含む、請求項1~7のいずれか一項に記載の防臭剤組成物。
- 前記有機系抗菌剤がヒドロキサム酸化合物を含む、請求項1~8のいずれか一項に記載の防臭剤組成物。
- 前記有機系抗菌剤の含有量が、前記銀ゼオライト100質量部に対して100~300質量部である、請求項1~9のいずれか一項に記載の防臭剤組成物。
- 銀ゼオライトと、吸水性樹脂と、を含む防臭剤組成物であって、
当該防臭剤組成物を温度70±2℃、相対湿度90±2%に保持して1日経過した際の黄色度が20以下である、防臭剤組成物。 - 前記吸水性樹脂が、(メタ)アクリル酸及びその塩からなる群より選ばれる少なくとも一種の(メタ)アクリル酸化合物に由来する構造単位を有し、
当該構造単位の含有量が、前記吸水性樹脂を構成する構造単位の全量を基準として50モル%以上である、請求項11に記載の防臭剤組成物。 - 有機系抗菌剤を更に含有する、請求項11又は12に記載の防臭剤組成物。
- 請求項1~13のいずれか一項に記載の防臭剤組成物を含有する、吸収体。
- 請求項14に記載の吸収体を備える、吸収性物品。
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EP20876908.3A EP4046611A4 (en) | 2019-10-18 | 2020-10-14 | DEODORIZING COMPOSITION, ABSORBENT BODY AND ABSORBENT ARTICLE |
JP2021552412A JPWO2021075460A1 (ja) | 2019-10-18 | 2020-10-14 | |
KR1020227013159A KR20220066343A (ko) | 2019-10-18 | 2020-10-14 | 방취제 조성물, 흡수체 및 흡수성 물품 |
CN202080072501.4A CN114555138B (zh) | 2019-10-18 | 2020-10-14 | 除臭剂组合物、吸收体及吸收性物品 |
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JP (1) | JPWO2021075460A1 (ja) |
KR (1) | KR20220066343A (ja) |
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JPS59179114A (ja) | 1983-03-31 | 1984-10-11 | Yoichi Yasukawa | 排泄物処理剤 |
JP2004346089A (ja) * | 2003-04-10 | 2004-12-09 | Sumitomo Seika Chem Co Ltd | 吸水性樹脂組成物 |
JP2010075463A (ja) * | 2008-09-26 | 2010-04-08 | Daio Paper Corp | 吸収性物品 |
JP2010094656A (ja) * | 2008-10-20 | 2010-04-30 | Nippon Shokubai Co Ltd | 微粒子が固着してなる吸水剤 |
JP2014023949A (ja) * | 2013-09-28 | 2014-02-06 | Daio Paper Corp | パンツタイプ使い捨ておむつ |
JP2019038882A (ja) * | 2017-08-23 | 2019-03-14 | 花王株式会社 | 吸水性樹脂組成物 |
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FR2755612B1 (fr) * | 1996-11-13 | 1998-12-24 | Atochem Elf Sa | Composition superabsorbante pour articles d'hygiene ne developpant pas d'odeurs incommodantes |
JP2001258934A (ja) * | 2000-03-17 | 2001-09-25 | Sanyo Chem Ind Ltd | 吸水剤、その製法及び吸収性物品 |
JP2003206381A (ja) * | 2002-01-15 | 2003-07-22 | Sumitomo Seika Chem Co Ltd | 吸水性樹脂の着色防止方法 |
JP4199679B2 (ja) * | 2004-01-07 | 2008-12-17 | 株式会社日本触媒 | 吸水性樹脂組成物およびその製造方法、並びに、それらを用いた吸収体、吸収性物品 |
JP4713937B2 (ja) * | 2005-05-09 | 2011-06-29 | 出光テクノファイン株式会社 | 抗菌性組成物、抗菌性成形体、抗菌性組成物含有溶液、洗浄剤、および、畳表 |
EP1779727A4 (en) * | 2004-07-13 | 2010-08-04 | Idemitsu Technofine Co Ltd | ANIBACTERIAL COMPOSITION, ANTIBACTERIAL MOLDING, SOLUTION CONTAINING ANTIBACTERIAL COMPOSITION, DETERGENT, JUDO MAT SURFACE AND TATAMI |
JP2006052205A (ja) * | 2004-07-13 | 2006-02-23 | Idemitsu Technofine Co Ltd | 抗菌性組成物、抗菌性樹脂成形体、抗菌性組成物含有溶液、洗浄剤、畳表および畳 |
JP5632346B2 (ja) * | 2011-09-27 | 2014-11-26 | 大王製紙株式会社 | パンツタイプ使い捨ておむつ |
DE102011088944A1 (de) * | 2011-12-19 | 2013-06-20 | Beiersdorf Ag | Wirkstoffkombinationen aus Silberverbindungen und einer oder mehreren physiologisch unbedenklichen Hydroxamsäure sowie kosmetische oder dermatologischeZubereitungen, solche Wirkstoffkombinationen enthaltend |
KR20190122693A (ko) * | 2017-03-17 | 2019-10-30 | 스미토모 세이카 가부시키가이샤 | 흡수성 수지 조성물, 흡수체 및 흡수성 물품 |
-
2020
- 2020-10-14 KR KR1020227013159A patent/KR20220066343A/ko not_active Application Discontinuation
- 2020-10-14 CN CN202080072501.4A patent/CN114555138B/zh active Active
- 2020-10-14 EP EP20876908.3A patent/EP4046611A4/en active Pending
- 2020-10-14 WO PCT/JP2020/038765 patent/WO2021075460A1/ja active Application Filing
- 2020-10-14 JP JP2021552412A patent/JPWO2021075460A1/ja active Pending
Patent Citations (6)
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JPS59179114A (ja) | 1983-03-31 | 1984-10-11 | Yoichi Yasukawa | 排泄物処理剤 |
JP2004346089A (ja) * | 2003-04-10 | 2004-12-09 | Sumitomo Seika Chem Co Ltd | 吸水性樹脂組成物 |
JP2010075463A (ja) * | 2008-09-26 | 2010-04-08 | Daio Paper Corp | 吸収性物品 |
JP2010094656A (ja) * | 2008-10-20 | 2010-04-30 | Nippon Shokubai Co Ltd | 微粒子が固着してなる吸水剤 |
JP2014023949A (ja) * | 2013-09-28 | 2014-02-06 | Daio Paper Corp | パンツタイプ使い捨ておむつ |
JP2019038882A (ja) * | 2017-08-23 | 2019-03-14 | 花王株式会社 | 吸水性樹脂組成物 |
Also Published As
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CN114555138A (zh) | 2022-05-27 |
CN114555138B (zh) | 2023-03-24 |
KR20220066343A (ko) | 2022-05-24 |
JPWO2021075460A1 (ja) | 2021-04-22 |
EP4046611A4 (en) | 2023-09-06 |
EP4046611A1 (en) | 2022-08-24 |
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