WO2016114273A1 - 殺菌剤及びそれを用いた殺菌方法 - Google Patents
殺菌剤及びそれを用いた殺菌方法 Download PDFInfo
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- WO2016114273A1 WO2016114273A1 PCT/JP2016/050748 JP2016050748W WO2016114273A1 WO 2016114273 A1 WO2016114273 A1 WO 2016114273A1 JP 2016050748 W JP2016050748 W JP 2016050748W WO 2016114273 A1 WO2016114273 A1 WO 2016114273A1
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- disinfectant
- sterilization method
- hydrogen peroxide
- mist
- facility
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Classifications
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/22—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing ingredients stabilising the active ingredients
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
-
- 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
- A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
- A61L2/16—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using chemical substances
- A61L2/20—Gaseous substances, e.g. vapours
-
- 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
- A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
- A61L2/16—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using chemical substances
- A61L2/20—Gaseous substances, e.g. vapours
- A61L2/208—Hydrogen peroxide
-
- 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
- A61L2/00—Disinfection or sterilisation of materials or objects, in general; Accessories therefor
- A61L2/16—Disinfection or sterilisation of materials or objects, in general; Accessories therefor using chemical substances
- A61L2/22—Phase substances, e.g. smokes or aerosols
-
- 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
- A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
- A61L27/50—Materials characterised by their function or physical properties, e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
- A61L27/54—Biologically active materials, e.g. therapeutic substances
-
- 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
- A61L2103/00—Materials or objects being the target of disinfection or sterilisation
- A61L2103/23—Containers other than laboratory or medical, e.g. bottles or mail
-
- 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
- A61L2103/00—Materials or objects being the target of disinfection or sterilisation
- A61L2103/75—Room floors or walls
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
- C01B15/01—Hydrogen peroxide
- C01B15/037—Stabilisation by additives
Definitions
- the present invention relates to a disinfectant containing an aqueous solution containing hydrogen peroxide and a disinfecting method using the disinfectant.
- Aqueous solutions containing hydrogen peroxide are used as various disinfectants. Further, a technique for sterilizing an object by bringing the sterilizer into contact with the object as mist or vapor is applied to sterilization of a clean room for electronic industry, sterilization of a plastic bottle before filling a beverage, or the like. Particularly in recent years, coupled with the widespread use of PET bottles, the required performance for aqueous hydrogen peroxide solutions used for aseptic filling has increased. That is, there are demands for a material that has little residue when hydrogen peroxide and water are evaporated, and a material that has high stability in high temperature or metal storage containers.
- JP 11-47242 A JP 2006-240969 A Special table 2009-507878 JP-A-11-35306
- An object of the present invention is to provide a bactericidal agent in which the stability of hydrogen peroxide is improved regardless of storage conditions, and further, deposits derived from the stabilizer are reduced, and a bactericidal method using the bactericidal agent. .
- the present inventors have developed a disinfectant comprising an aqueous solution containing hydrogen peroxide, an organic phosphonic acid or a salt thereof, and an aluminum salt. It has been found that the deposits derived from the stabilizer in the disinfectant remaining on the paste can be reduced and the residue can be easily removed by washing with water, and that the aseptic filling apparatus can be stably operated. . That is, the present invention is as follows.
- a bactericidal agent comprising an aqueous solution containing hydrogen peroxide, an organic phosphonic acid or a salt thereof, and an aluminum salt.
- n is an integer of 2 to 8
- R is an organic group having 1 to 20 carbon atoms and at least one hetero atom.
- the organic phosphonic acid is 1-hydroxyethylidene-1,1-diphosphonic acid, ethylenediaminetetra (methylenephosphonic acid), diethylenetriaminepenta (methylenephosphonic acid), and bis (hexamethylenetriaminepenta (methylenephosphonic acid)).
- ⁇ 5> The disinfectant according to any one of ⁇ 1> to ⁇ 4>, wherein the concentration of the hydrogen peroxide in the disinfectant is 30% by mass to 50% by mass.
- ⁇ 6> The fungicide according to any one of ⁇ 1> to ⁇ 5>, wherein the concentration of the organic phosphonic acid or a salt thereof in the fungicide is 0.01 to 10 mg / kg.
- ⁇ 7> The fungicide according to any one of ⁇ 1> to ⁇ 6>, wherein the concentration of the aluminum salt in the fungicide is 1 to 1000 ⁇ g / kg in terms of aluminum.
- ⁇ 8> A method for sterilizing an object, comprising bringing the sterilizer according to any one of ⁇ 1> to ⁇ 7> into contact with the object as mist or steam.
- the sterilization method according to ⁇ 8> wherein the temperature of the mist or steam is 30 ° C. to 250 ° C.
- the sterilization method according to ⁇ 8> wherein the mist or vapor is mixed with gas to form a gaseous fluid and contacted with an object.
- the gas is at least one selected from the group consisting of air, nitrogen, oxygen, and ozone.
- ⁇ 12> The sterilization method according to ⁇ 10> or ⁇ 11>, wherein the temperature of the gas used for the mixing is room temperature or higher.
- ⁇ 13> The sterilization method according to any one of ⁇ 10> to ⁇ 12>, wherein the temperature of the gaseous fluid is 30 ° C. to 250 ° C.
- ⁇ 14> The sterilization method according to any one of ⁇ 8> to ⁇ 13>, wherein the object is a packaging container, a food machine, a plastic bottle, or a plastic bottle preform.
- ⁇ 15> The sterilization method according to any one of ⁇ 8> to ⁇ 13>, wherein the object is a closed space.
- ⁇ 16> The sterilization method according to ⁇ 15>, wherein the closed space is an automobile, a clean room for electronic industry, a living space, a medical space, a kitchen, a kitchen, a vehicle, or an aircraft.
- the object is a facility, a mist or steam generator is brought into the facility, a germicide mist or steam is generated by the generator, and the number of bacteria in the facility is reduced.
- ⁇ 18> The sterilization method according to ⁇ 17>, wherein the facility is a toiletry facility, a waste disposal facility, or a barn.
- the stability of hydrogen peroxide in the sterilizing agent is improved, and when the sterilizing agent is brought into contact with an object as mist or vapor, the stabilizer in the sterilizing agent remains attached to the spray nozzle, the evaporator, or the like.
- the deposits derived from the origin are reduced, and the residue can be easily removed by washing with water.
- the disinfectant of the present invention contains an organic phosphonic acid or a salt thereof and an aluminum salt as an active ingredient for stabilizing an aqueous hydrogen peroxide solution. Furthermore, other acid and / or salt may be included as an additive for facilitating the washing property of the evaporation residue adhering to the spray nozzle or the evaporator.
- the organic phosphonic acid or salt thereof used in the present invention is a compound or salt thereof having two or more phosphonic acid groups and one or more heteroatoms in addition to the phosphonic acid group in the molecule.
- n is an integer of 2 to 8
- R is an organic group having 1 to 20 carbon atoms and at least one heteroatom.
- n is more preferably an integer of 2 to 5.
- R is more preferably an organic group having 2 to 17 carbon atoms and 1 to 3 heteroatoms.
- a hetero atom a nitrogen atom and an oxygen atom are preferable.
- the organic phosphonic acid or salt thereof used in the present invention may be used alone or in combination of two or more.
- the aluminum salt used in the present invention include potassium aluminum sulfate, aluminum nitrate, aluminum sulfate, and aluminum oxalate, and potassium aluminum sulfate is particularly preferable.
- the potassium aluminum sulfate preferably used in the present invention may be a hydrate such as dodecahydrate.
- the concentration of the organic phosphonic acid or a salt thereof in the fungicide of the present invention is preferably 0.01 to 10 mg / kg, more preferably 0.1 to 5 mg / kg, still more preferably 0.4 to 1.8 mg / kg. 1.2 to 1.8 mg / kg is particularly preferable.
- concentration of the organic phosphonic acid or the salt thereof is in the above range, the stabilizing effect of hydrogen peroxide is obtained, and the amount of evaporation residue adhering to the evaporator or the spray nozzle is suppressed.
- the concentration of the aluminum salt in the fungicide of the present invention is preferably 1 to 1000 ⁇ g / kg, more preferably 10 to 500 ⁇ g / kg, and particularly preferably 50 to 200 ⁇ g / kg in terms of aluminum.
- concentration of the aluminum salt is in the above range, the effect of stabilizing hydrogen peroxide is obtained, and the amount of evaporation residue adhering to the evaporator and the spray nozzle is suppressed.
- the concentration of hydrogen peroxide in the disinfectant of the present invention is preferably 30% by mass to 50% by mass, and more preferably 30% by mass to 40% by mass. When the concentration of hydrogen peroxide is in the above range, a sterilizing effect by hydrogen peroxide is obtained, and the object is effectively sterilized.
- Heavy metals are known as hydrogen peroxide decomposition components, but the decomposition components contained in an aqueous hydrogen peroxide solution produced industrially are almost limited to Fe, Cr, Ni, and Pd.
- the bactericidal agent of the present invention preferably uses an aqueous hydrogen peroxide solution in which the concentration of Ni and Pd is 0.1 ppb or less and the concentration of Fe and Cr is 5 ppb or less, respectively.
- Such an aqueous hydrogen peroxide solution can be obtained by a known method, and specifically includes a rectification concentration method via a gas-liquid separator and a method of removing metal components with a reverse osmosis membrane or an ion exchange resin. It is done.
- the disinfectant of the present invention is preferably produced by directly adding organic phosphonic acid or a salt thereof and an aluminum salt to an aqueous hydrogen peroxide solution as a raw material. You may make it contact with hydrogen oxide aqueous solution.
- hydrogen peroxide can be stabilized without using various known hydrogen peroxide stabilizers, but stability can be improved by using a required amount of an inorganic phosphate stabilizer in combination. It can also be improved.
- Specific examples include phosphates such as orthophosphoric acid and sodium dihydrogen phosphate, and pyrophosphates such as sodium hydrogen pyrophosphate and sodium pyrophosphate. These may be contained singly or in combination depending on the intended use. May be.
- the method of vaporizing the bactericidal agent of the present invention to produce a bactericide mist or vapor is not particularly limited. Examples include a method using ultrasonic waves and a method using heating.
- the bactericide mist or vapor thus obtained may be used alone or may be sprayed with another gas.
- the bactericidal agent is heated and vaporized to the boiling point or higher by an evaporator, and another gas and a bactericide mist or vapor are mixed to spray a gaseous fluid.
- a well-known apparatus can be used. By mixing and spraying the gas, for example, an uneven object can be more efficiently brought into contact with the mist or vapor of the bactericide.
- gas to be accompanied with the sterilizing agent mist or steam include air, nitrogen, oxygen, and ozone.
- air is preferable because it is inexpensive.
- the temperature of the gas used for mixing is preferably room temperature or higher.
- the temperature of the gaseous fluid such as the sterilizer mist or vapor, or the sterilizer mist or vapor mixed with another gas is preferably 30 to 250 ° C, more preferably 50 ° C to 200 ° C, and even more preferably 100 ° C to 150 ° C. If it is lower than this, sufficient sterilizing ability cannot be obtained, and if it is higher than this, the object to be sterilized may be damaged by heat.
- the amount of bactericidal agent used must be set appropriately according to the sterilization target and the operating temperature.
- the amount of bactericidal mist attached to a 500 ml bottle is 35% peroxidized. It may be 20 ⁇ L or more in terms of aqueous hydrogen solution, and a range of 20 ⁇ L to 100 ⁇ L is preferable. In the range of 20 ⁇ L to 100 ⁇ L in terms of 35% hydrogen peroxide solution, it is preferable to adjust the supply amount of the bactericide, the flow rate of the accompanying gas, and the mist or vapor blowing time of the hydrogen peroxide solution so as to adhere to the bottle.
- Examples of the object include, but are not limited to, a packaging container, a food machine, a PET bottle and / or a PET bottle preform, and a closed space.
- Examples of the closed space include, but are not limited to, automobiles, electronic industry clean rooms, living spaces, medical spaces, kitchens, kitchens, vehicles, and airplanes.
- a hydrogen peroxide aqueous solution mist and / or vapor generator may be brought into the facility to generate a hydrogen peroxide aqueous solution mist and / or vapor, thereby reducing the number of bacteria in the facility.
- Examples of such facilities include toiletries, waste disposal facilities, and barns, but are not limited to these.
- Example preparation method The stability of hydrogen peroxide in the disinfectant is as follows: (a) Immediately after compounding, (b) Assumed after storage of aluminum tank immediately after compounding, (c) Assumed after storage of stainless steel tank after aluminum tank storage, (d) Immediately after compounding The test was carried out in four ways as expected after storage in the stainless steel tank. Explanation of (a): Using an additive shown in Table 1, an aqueous solution having a hydrogen peroxide concentration of 35% by mass and an additive (stabilizer) having a concentration shown in Table 1 was prepared, and this was used as a disinfectant. A sample was used.
- DTPMPA.7Na is diethylenetriaminepenta (methylenephosphonic acid) 7 sodium salt (trade name: DEQUEST 2066 (manufacturer: Italmatch Japan Co., Ltd.)), and HEDP.4Na is 1-hydroxyethylidene-1,1-diphosphonic acid.
- Tetrasodium salt (trade name: DEQUEST 2016 (manufacturer Ital Match Japan Co., Ltd.)) is shown.
- the stability of hydrogen peroxide was evaluated by JIS stability.
- the JIS stability was measured by the method specified in JIS-1463.
- the remaining property of the deposits on the evaporator was evaluated using a simulated evaporator.
- the simulated evaporator used was a simulated reduced scale with reference to a known evaporator.
- a germicide sample was fed to a simulated evaporator heated to 300 ° C. at a constant speed while being mixed with air, and the test was conducted for 80 hours.
- the weight of the simulated evaporator after the test was measured, and the weight difference from before the start of the test was defined as the adhesion amount (mg).
- DTPMPA ⁇ 7Na diethylenetriaminepenta (methylenephosphonic acid) 7 sodium salt
- HEDP ⁇ 4Na 1-hydroxyethylidene-1,1-diphosphonic acid tetrasodium salt
- Example 2 using potassium alum as additive 2 is more stable than hydrogen peroxide in Comparative Example 1 where additive 2 is not used. It turns out that it is excellent in property.
- Comparative Example 1 it can be seen that the stability of hydrogen peroxide in (c) the assumption after storage of the stainless steel tank after storage of the aluminum tank and (d) the assumption after storage of the stainless steel tank immediately after compounding is inferior.
- Example 3 using potassium alum as additive 2 is more stable than hydrogen peroxide in Comparative Example 2 where additive 2 is not used. It turns out that it is excellent in property.
- the present invention improves the stability of hydrogen peroxide in the bactericidal agent, reduces the deposits derived from the stabilizer in the bactericide remaining on the spray nozzle and evaporator, and easily removes the residue by washing with water. As a result, stable operation of the aseptic filling apparatus can be performed without blocking a thin pipe portion such as a nozzle.
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Abstract
Description
例えば、ピロリン酸ナトリウム及びオルトリン酸を安定剤として使用する場合、安定剤の総添加量を40mg/kg以下にするには、分解活性物質濃度を過酸化水素水溶液中5ppb以下のレベルとする必要があった(特許文献2参照)。
すなわち本発明は以下のとおりである。
<2> 前記有機ホスホン酸が、下記一般式(1)で表される化合物である上記<1>に記載の殺菌剤である。
<3> 前記有機ホスホン酸が、1-ヒドロキシエチリデン-1,1-ジホスホン酸、エチレンジアミンテトラ(メチレンホスホン酸)、ジエチレントリアミンペンタ(メチレンホスホン酸)、及びビス(ヘキサメチレントリアミンペンタ(メチレンホスホン酸))よりなる群から選ばれる少なくとも一種である上記<1>または<2>に記載の殺菌剤である。
<4> 前記アルミニウム塩が、硫酸カリウムアルミニウムである上記<1>から<3>のいずれかに記載の殺菌剤である。
<5> 殺菌剤中における前記過酸化水素の濃度が30質量%~50質量%である上記<1>から<4>のいずれかに記載の殺菌剤である。
<6> 殺菌剤中における前記有機ホスホン酸若しくはその塩の濃度が0.01~10mg/kgである上記<1>から<5>のいずれかに記載の殺菌剤である。
<7> 殺菌剤中における前記アルミニウム塩の濃度がアルミニウム換算として1~1000μg/kgである上記<1>から<6>のいずれかに記載の殺菌剤である。
<8> 上記<1>から<7>のいずれかに記載の殺菌剤をミスト又は蒸気として対象物に接触させることを特徴とする対象物の殺菌方法である。
<9> 前記ミスト又は蒸気の温度が30℃~250℃である上記<8>に記載の殺菌方法である。
<10> 前記ミスト又は蒸気を気体と混合してガス状流体とし、対象物に接触させる上記<8>に記載の殺菌方法である。
<11> 前記気体が空気、窒素、酸素、及びオゾンよりなる群から選ばれる少なくとも1種である上記<10>に記載の殺菌方法である。
<12> 前記混合に供する気体の温度が室温以上である上記<10>または<11>に記載の殺菌方法である。
<13> 前記ガス状流体の温度が30℃~250℃である上記<10>から<12>のいずれかに記載の殺菌方法である。
<14> 前記対象物が包装容器、食品機械、ペットボトル又はペットボトルプリフォームである上記<8>から<13>のいずれかに記載の殺菌方法である。
<15> 前記対象物が閉鎖空間である上記<8>から<13>のいずれかに記載の殺菌方法である。
<16> 前記閉鎖空間が自動車、電子工業用のクリーンルーム、居住空間、医療スペース、厨房、調理場、車両または航空機である上記<15>に記載の殺菌方法である。
<17> 前記対象物が施設であり、ミスト又は蒸気の発生装置を施設内に持ち込み、該発生装置により殺菌剤のミスト又は蒸気を発生させ、施設内の菌数を減らすこと特徴とする上記<8>から<13>のいずれかに記載の殺菌方法である。
<18> 前記施設がトイレタリー施設、廃棄物処理施設、又は畜舎である上記<17>に記載の殺菌方法である。
本発明の殺菌剤は、過酸化水素水溶液の安定化のための有効成分として、有機ホスホン酸若しくはその塩とアルミニウム塩とを含む。更に、噴霧ノズルや蒸発器などに付着した蒸発残渣の水洗性を容易にするための添加剤として、その他の酸及び/又は塩を含んでもよい。
本発明で使用される有機ホスホン酸またはその塩の具体例としては、1-ヒドロキシエチリデン-1,1-ジホスホン酸及びその塩(一般式(1)におけるn=2の化合物)、エチレンジアミンテトラ(メチレンホスホン酸)及びその塩(一般式(1)におけるn=4の化合物)、ジエチレントリアミンペンタ(メチレンホスホン酸)(一般式(1)におけるn=5の化合物)、ビス(ヘキサメチレントリアミンペンタ(メチレンホスホン酸))及びその塩(一般式(1)におけるn=5の化合物)が挙げられるが、これらに限定されるものではない。本発明で使用される有機ホスホン酸またはその塩は、1種単独で使用してもよく、2種以上を組み合わせて使用してもよい。上記具体例の構造式を以下に示す。
また、本発明の殺菌剤中におけるアルミニウム塩の濃度は、アルミニウム換算として、1~1000μg/kgが好ましく、10~500μg/kgがより好ましく、50~200μg/kgが特に好ましい。アルミニウム塩の濃度が上記範囲の場合、過酸化水素の安定化効果が得られ、蒸発器や噴霧ノズルに付着する蒸発残渣の量が抑制される。
本発明の殺菌剤中における過酸化水素の濃度は、30質量%~50質量%が好ましく、30質量%~40質量%がより好ましい。過酸化水素の濃度が上記範囲の場合、過酸化水素による殺菌効果が得られ、対象物が効果的に殺菌される。
殺菌剤中の過酸化水素の安定性は、(a)調合直後、(b)調合直後にアルミニウムタンク貯蔵後想定、(c)アルミニウムタンク貯蔵に次いでステンレスタンク貯蔵後想定、(d)調合直後にステンレスタンク貯蔵後想定の4通りで試験した。
(a)の説明:表1に示す添加剤を用い、過酸化水素濃度が35質量%であり、添加剤(安定剤)が表1に記載の濃度である水溶液を調製し、これを殺菌剤サンプルとした。
(b)の説明:(a)の殺菌剤サンプル300ミリリットルにA1070P製テストピース(30mm×30mm×2mm)2枚を入れ、45℃にて24時間静置した。
(c)の説明:(b)の後、A1070P製のテストピースを抜出し、代わりにSUS304L製のテストピース(30mm×30mm×2mm)2枚を入れ、45℃にて24時間静置した。
(d)の説明:(a)の殺菌剤サンプル300ミリリットルにSUS304L製のテストピース(30mm×30mm×2mm)2枚を入れ、45℃にて24時間静置した。
なお、表1に記載されたカリミョウバンは硫酸カリウムアルミニウムを示す。また、DTPMPA・7Naはジエチレントリアミンペンタ(メチレンホスホン酸)7ナトリウム塩(商標名DEQUEST2066(製造業者イタルマッチジャパン株式会社))を示し、同様にHEDP・4Naは1-ヒドロキシエチリデン-1,1-ジホスホン酸4ナトリウム塩(商標名DEQUEST2016(製造業者イタルマッチジャパン株式会社))を示す。
過酸化水素の安定性はJIS安定度により評価した。JIS安定度は、JIS-1463に規定された方法で行った。また蒸発器への付着物の残存性の評価は、模擬蒸発器を用いて評価した。模擬蒸発器は公知の蒸発器を参考に縮小模擬したものを用いた。300℃に加熱した模擬蒸発器に、空気と混合させながら殺菌剤サンプルを一定速度で送液して気化させ、80時間試験した。試験後の模擬蒸発器重量を測定し、試験開始前との重量差を付着量(mg)とした。さらにこれをイオン交換水で水洗、乾燥して再度重量を測定し、試験開始前との重量差を残留量(mg)とした。測定結果を表1に示す。
(模擬蒸発器構造)
・材質:SUS316L
・150mm×23mmφ円筒形気化室先に高さ17mmの円錐形ノズルをつけたもの
(条件)
・過酸化水素の送液流量:1.25mL/min
・空気流量:2.1L/min
・イオン交換水流量:0.5kg/1.5min
・ノズル口のガス流体温度:100~120℃
具体的には、実施例1と実施例5と実施例7と比較例6とを比較してみると、これらはそれぞれ添加剤1と添加剤2の含有量が等しいが、添加剤1として有機ホスホン酸を用いた実施例1、実施例5および実施例7は、添加剤1としてリン酸を用いた比較例6よりも、洗浄性に優れていることがわかる。
次に、実施例2と比較例1とを比較してみると、添加剤2としてカリミョウバンを用いた実施例2は、添加剤2を用いていない比較例1よりも、過酸化水素の安定性に優れていることがわかる。比較例1では、(c)アルミニウムタンク貯蔵に次いでステンレスタンク貯蔵後想定と(d)調合直後にステンレスタンク貯蔵後想定とにおける過酸化水素の安定性に劣ることがわかる。
次に、実施例3と比較例2とを比較してみると、添加剤2としてカリミョウバンを用いた実施例3は、添加剤2を用いていない比較例2よりも、過酸化水素の安定性に優れていることがわかる。比較例2では、(d)調合直後にステンレスタンク貯蔵後想定における過酸化水素の安定性に劣ることがわかる。
更に、実施例4と比較例7とを比較してみると、これらはそれぞれ添加剤1と添加剤2の含有量が等しいが、添加剤1として有機ホスホン酸を用いた実施例4は、添加剤1としてリン酸を用いた比較例7よりも、洗浄性に優れていることがわかる。
Claims (18)
- 過酸化水素、有機ホスホン酸若しくはその塩、及びアルミニウム塩を含有する水溶液を含むことを特徴とする殺菌剤。
- 前記有機ホスホン酸が、1-ヒドロキシエチリデン-1,1-ジホスホン酸、エチレンジアミンテトラ(メチレンホスホン酸)、ジエチレントリアミンペンタ(メチレンホスホン酸)、及びビス(ヘキサメチレントリアミンペンタ(メチレンホスホン酸))よりなる群から選ばれる少なくとも一種である請求項1または2に記載の殺菌剤。
- 前記アルミニウム塩が、硫酸カリウムアルミニウムである請求項1から3のいずれかに記載の殺菌剤。
- 殺菌剤中における前記過酸化水素の濃度が30質量%~50質量%である請求項1から4のいずれかに記載の殺菌剤。
- 殺菌剤中における前記有機ホスホン酸若しくはその塩の濃度が0.01~10mg/kgである請求項1から5のいずれかに記載の殺菌剤。
- 殺菌剤中における前記アルミニウム塩の濃度がアルミニウム換算として1~1000μg/kgである請求項1から6のいずれかに記載の殺菌剤。
- 請求項1から7のいずれかに記載の殺菌剤をミスト又は蒸気として対象物に接触させることを特徴とする対象物の殺菌方法。
- 前記ミスト又は蒸気の温度が30℃~250℃である請求項8に記載の殺菌方法。
- 前記ミスト又は蒸気を気体と混合してガス状流体とし、対象物に接触させる請求項8に記載の殺菌方法。
- 前記気体が空気、窒素、酸素、及びオゾンよりなる群から選ばれる少なくとも1種である請求項10に記載の殺菌方法。
- 前記混合に供する気体の温度が室温以上である請求項10または11に記載の殺菌方法。
- 前記ガス状流体の温度が30℃~250℃である請求項10から12のいずれかに記載の殺菌方法。
- 前記対象物が包装容器、食品機械、ペットボトル又はペットボトルプリフォームである請求項8から13のいずれかに記載の殺菌方法。
- 前記対象物が閉鎖空間である請求項8から13のいずれかに記載の殺菌方法。
- 前記閉鎖空間が自動車、電子工業用のクリーンルーム、居住空間、医療スペース、厨房、調理場、車両または航空機である請求項15に記載の殺菌方法。
- 前記対象物が施設であり、ミスト又は蒸気の発生装置を施設内に持ち込み、該発生装置により殺菌剤のミスト又は蒸気を発生させ、施設内の菌数を減らすこと特徴とする請求項8から13のいずれかに記載の殺菌方法。
- 前記施設がトイレタリー施設、廃棄物処理施設、又は畜舎である請求項17に記載の殺菌方法。
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| JP7136270B2 (ja) | 2017-02-20 | 2022-09-13 | 大日本印刷株式会社 | 殺菌剤ガス化装置及び殺菌剤ガス化装置の洗浄方法 |
| US11872323B2 (en) | 2017-02-20 | 2024-01-16 | Dai Nippon Printing Co., Ltd. | Gasifier for sterilizer and cleaning method of gasifier for sterilizer |
| US11806437B2 (en) | 2017-02-20 | 2023-11-07 | Dai Nippon Printing, Ltd. | Gasifier for sterilizer and cleaning method of gasifier for sterilizer |
| WO2018151308A1 (ja) * | 2017-02-20 | 2018-08-23 | 大日本印刷株式会社 | 殺菌剤ガス化装置及び殺菌剤ガス化装置の洗浄方法 |
| WO2022190894A1 (ja) * | 2021-03-08 | 2022-09-15 | 三菱瓦斯化学株式会社 | 殺菌用過酸化水素水溶液並びにこれを用いた対象物の殺菌方法および殺菌された対象物の製造方法 |
| WO2022244607A1 (ja) * | 2021-05-17 | 2022-11-24 | 国立大学法人京都大学 | 過酸化水素の製造方法 |
| JP7273441B1 (ja) | 2022-10-05 | 2023-05-15 | 株式会社エアレックス | 除染液、並びに、これを使用する除染装置及び除染方法 |
| WO2024075429A1 (ja) * | 2022-10-05 | 2024-04-11 | 株式会社エアレックス | 除染液、並びに、これを使用する除染装置及び除染方法 |
| JP2024054530A (ja) * | 2022-10-05 | 2024-04-17 | 株式会社エアレックス | 除染液、並びに、これを使用する除染装置及び除染方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR102525259B1 (ko) | 2023-04-24 |
| KR20170104447A (ko) | 2017-09-15 |
| TWI703929B (zh) | 2020-09-11 |
| TW201635903A (zh) | 2016-10-16 |
| CN107105641B (zh) | 2021-06-29 |
| CN107105641A (zh) | 2017-08-29 |
| JPWO2016114273A1 (ja) | 2017-10-19 |
| JP6642454B2 (ja) | 2020-02-05 |
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