JPH09249511A - Antimicrobial agent and its production - Google Patents
Antimicrobial agent and its productionInfo
- Publication number
- JPH09249511A JPH09249511A JP8472196A JP8472196A JPH09249511A JP H09249511 A JPH09249511 A JP H09249511A JP 8472196 A JP8472196 A JP 8472196A JP 8472196 A JP8472196 A JP 8472196A JP H09249511 A JPH09249511 A JP H09249511A
- Authority
- JP
- Japan
- Prior art keywords
- silver
- carrier
- powder
- antibacterial agent
- silver compound
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、抗菌剤及びその製
造方法に関する。TECHNICAL FIELD The present invention relates to an antibacterial agent and a method for producing the same.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】台所用
品や風呂場用品等に合成樹脂製品が広く普及している
が、湿気に晒される機会が多いこれらの製品表面にはカ
ビが発生し易く、不快なばかりか不衛生であるという問
題があった。また近年の健康志向に伴って、ろ過材に活
性炭を使用した家庭用の浄水器も広く普及しつつある
が、活性炭によって水道水中の塩素分が除去されるた
め、浄水器内に残留している水道水（浄水）中で細菌や
カビが増殖し易いという問題があった。このような問題
に鑑みて、細菌やカビ等が発生したり増殖したりし易い
製品等には、抗菌剤を用いて抗菌処理を施すようになっ
てきた。2. Description of the Related Art Synthetic resin products are widely used for kitchen appliances, bathroom appliances, etc., but they are often exposed to moisture, and mold is likely to occur on their surfaces. There was a problem that it was not only unpleasant but also unsanitary. In addition, household water purifiers that use activated carbon as a filter medium are becoming widespread due to health consciousness in recent years, but since chlorine components in tap water are removed by activated carbon, they remain in the water purifier. There is a problem that bacteria and mold easily grow in tap water (purified water). In view of such a problem, antibacterial treatment has been started to be applied to products and the like, which are prone to germs and molds and proliferate, by using antibacterial agents.
【０００３】この種の抗菌剤として、硝酸銀等の水溶性
銀化合物の水溶液中に多孔質担体を浸漬して担体に銀化
合物を吸着担持させた後、アルカリ処理する等によって
担持された水溶性銀化合物を不溶性又は難溶性の銀化合
物に変化させたものが知られていたが、長期間に亘って
充分な抗菌性を保持し難いという問題とともに、多孔質
担体に銀化合物を吸着担持させただけのこれらの抗菌剤
では、水溶性銀化合物として硝酸銀を用いた場合、有毒
な硝酸イオンが溶出する虞れもあった。このような抗菌
剤に代わり、酸化銀水溶液に多孔質担体を浸漬して担体
に酸化銀を吸着担持させた抗菌剤が提案された（特開昭
５１−７１２１号）。しかしながら、硝酸銀のように一
度に多量の酸化銀を水に溶解させることは困難であり、
このため担体に多量の酸化銀を吸着担持させようとする
と、担体を酸化銀を含む溶液に長時間浸漬しておかなけ
ればならず、製造効率がきわめて悪いという問題があっ
た。また、酸化銀は多孔質担体には水溶液から吸着担持
され得るが、非多孔質の担体の場合には殆ど担持されな
いという問題もあった。As an antibacterial agent of this type, a water-soluble silver supported by, for example, immersing a porous carrier in an aqueous solution of a water-soluble silver compound such as silver nitrate to adsorb and carry the silver compound on the carrier, and then subjecting it to alkali treatment. It was known that the compound was changed to an insoluble or sparingly soluble silver compound, but with the problem that it was difficult to maintain sufficient antibacterial property for a long period of time, the silver compound was only adsorbed and supported on the porous carrier. In these antibacterial agents, when silver nitrate was used as the water-soluble silver compound, toxic nitrate ions might be eluted. Instead of such an antibacterial agent, an antibacterial agent in which a porous carrier is immersed in an aqueous solution of silver oxide to adsorb and carry silver oxide on the carrier has been proposed (Japanese Patent Laid-Open No. 51-7121). However, it is difficult to dissolve a large amount of silver oxide in water at once like silver nitrate,
Therefore, when trying to adsorb and support a large amount of silver oxide on the carrier, the carrier has to be immersed in a solution containing silver oxide for a long time, resulting in a problem that the production efficiency is extremely poor. Further, silver oxide can be adsorbed and supported from an aqueous solution on a porous carrier, but there is a problem that it is hardly supported on a non-porous carrier.
【０００４】また、水溶性の銀化合物の水溶液に担体を
浸漬した後、焼成して抗菌剤を得る方法も提案されてい
る（例えば特開平５−５８８２９号、特開平６−８７７
１１号等）。しかしながら、これらの方法では担体表面
に均一に銀化合物を吸着担持することはできるものの、
一度の処理で担体に吸着担持できる銀化合物の量には限
度があり、多量の銀化合物を担持させようとすると、担
体を銀化合物の水溶液に浸漬して焼成する操作を繰り返
し行う必要があった。Further, a method of obtaining an antibacterial agent by immersing the carrier in an aqueous solution of a water-soluble silver compound and then firing it has been proposed (for example, JP-A-5-58829 and JP-A-6-877).
No. 11, etc.). However, in these methods, although the silver compound can be uniformly adsorbed and supported on the surface of the carrier,
There is a limit to the amount of silver compound that can be adsorbed and supported on the carrier in one treatment, and when trying to support a large amount of silver compound, it was necessary to repeat the operation of immersing the carrier in an aqueous solution of the silver compound and baking it. .
【０００５】一方、蒸着法や銀鏡反応を利用して担体表
面に銀被膜を形成したものが知られており、この方法で
は担体に担持される銀の有効量を高めることは容易であ
るが、前者は製造に特殊な装置を必要とするという問題
があり、後者は製造過程で劇物に指定されている硝酸銀
やアンモニアを使用するため、製造に使用した廃液を安
全に処理しなければならない問題があった。On the other hand, it is known that a silver coating is formed on the surface of a carrier by utilizing a vapor deposition method or a silver mirror reaction. In this method, it is easy to increase the effective amount of silver supported on the carrier, The former has a problem that it requires a special device for manufacturing, and the latter uses silver nitrate and ammonia that are specified as deleterious substances in the manufacturing process, so the waste liquid used for manufacturing must be safely treated. was there.
【０００６】本発明者等は、上記課題を解決するため
に、銀粉末を担体に付着させた後、焼成して担体表面に
銀被膜を形成させる方法を試みたが、銀粉末が担体に付
着し難く、この結果、担体に充分な量の銀を担持させる
ことができず、抗菌効果の持続性に乏しい抗菌剤しか得
られなかった。また銀粉末を担体に付着せしめて焼成
し、表面に銀被膜を形成させるためには９００℃以上の
高温で焼成する必要があり、焼成に多量のエネルギーを
必要とするとともに、担体の種類によっては焼成時に分
解したり溶融してしまうという問題があった。本発明者
等はこのような問題点に鑑み、更に鋭意研究した結果、
銀粉末に代えて銀化合物粉末を用いた場合、銀粉末を用
いた場合からは予測できない程の多量の粉末を担体に付
着させることができ、この結果、担体に担持される銀の
有効量を高めることができるとともに、銀粉末の場合よ
りもはるかに低温焼成によって担体表面に銀被膜を形成
できることを見出し本発明を完成するに至った。In order to solve the above problems, the present inventors have tried a method of depositing silver powder on a carrier and then firing it to form a silver coating on the surface of the carrier. However, as a result, a sufficient amount of silver could not be supported on the carrier, and only an antibacterial agent having a poor antibacterial effect was obtained. Further, in order to form a silver coating on the surface by adhering silver powder to a carrier and baking, it is necessary to bake at a high temperature of 900 ° C. or higher, which requires a large amount of energy for baking, and depending on the type of carrier. There is a problem that it decomposes or melts during firing. The present inventors, in view of such problems, as a result of further diligent research,
When a silver compound powder is used instead of the silver powder, it is possible to attach a large amount of powder to the carrier, which is unpredictable from the case of using the silver powder, and as a result, the effective amount of silver supported on the carrier is increased. The present invention has been completed, finding that it can be increased and that a silver coating can be formed on the surface of a carrier by firing at a much lower temperature than in the case of silver powder.
【０００７】[0007]
【課題を解決するための手段】即ち本発明の抗菌剤は、
担体表面に、該担体表面に付着せしめた銀化合物粉末を
焼成して形成した銀被膜を有することを特徴とする。ま
た本発明の抗菌剤の製造方法は、担体表面に銀化合物粉
末を付着させた後、焼成して担体表面に銀被膜を形成す
ることを特徴とする。本発明製造方法において用いる粉
末状銀化合物としては、酸化銀粉末及び／又は炭酸銀粉
末が好ましい。That is, the antibacterial agent of the present invention comprises:
It is characterized in that it has a silver coating formed on the surface of a carrier by firing a silver compound powder adhered to the surface of the carrier. Further, the method for producing an antibacterial agent of the present invention is characterized in that after a silver compound powder is attached to the surface of a carrier, it is baked to form a silver film on the surface of the carrier. The powdery silver compound used in the production method of the present invention is preferably silver oxide powder and / or silver carbonate powder.
【０００８】[0008]
【発明の実施の形態】本発明において担体としては、無
機物担体、有機物担体のいずれも使用できるが、１５０
℃以上で分解や溶解しないものが好ましく、特に焼成温
度において分解や溶解しないものが好ましい。好ましい
無機担体としては、例えばケイ酸、ケイ酸アルミニウ
ム、ゼオライト、アルミナ、砂、ガラス等が挙げられ
る。また好ましい有機担体としては、例えばテフロン、
シリコン、ベークライト等の耐熱性樹脂、熱硬化性樹脂
が挙げられる。これら担体の形状は、例えば粉粒状、球
状、板状、繊維状等の任意の形状とすることができる
が、表面に微細な凹凸を有するものが、銀化合物粉末が
付着し易いため、より好ましい。このため担体として例
えばガラス球を用いる場合、表面にスリを入れて表面凹
凸を付与したものを用いることが好ましい。尚、担体が
粉粒状や球状等の場合、担体の粒径は使用目的に応じて
適宜選択することができる。BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, as the carrier, either an inorganic carrier or an organic carrier can be used.
Those that do not decompose or dissolve at a temperature of ℃ or above are preferable, and those that do not decompose or dissolve at the firing temperature are particularly preferable. Examples of preferable inorganic carriers include silicic acid, aluminum silicate, zeolite, alumina, sand, glass and the like. Examples of preferable organic carriers include Teflon,
Examples thereof include heat resistant resins such as silicon and bakelite, and thermosetting resins. The shape of these carriers may be, for example, powdery, spherical, plate-like, fibrous, or the like, but those having fine irregularities on the surface are more preferable because the silver compound powder is easily attached. . Therefore, for example, when glass spheres are used as the carrier, it is preferable to use those having a surface provided with surface irregularities by putting a pickpocket on the surface. When the carrier is powdery or spherical, the particle size of the carrier can be appropriately selected according to the purpose of use.
【０００９】銀化合物粉末としては、酸化銀、炭酸銀、
脂肪酸銀（酢酸銀、安息香酸銀等）、プロテイン銀等が
挙げられ、これらは２種以上を混合して用いることもで
きるが、担体への付着性が良好な酸化銀及び／又は炭酸
銀を用いることが好ましい。銀化合物粉末は、粒径が１
００μ以下が好ましく、１μ以下が特に好ましい。As the silver compound powder, silver oxide, silver carbonate,
Fatty acid silver (silver acetate, silver benzoate, etc.), protein silver and the like can be mentioned. These can be used as a mixture of two or more kinds, but silver oxide and / or silver carbonate having good adhesion to a carrier can be used. It is preferable to use. The particle size of silver compound powder is 1
00μ or less is preferable, and 1μ or less is particularly preferable.
【００１０】担体に銀化合物粉末を付着させる方法とし
ては、例えば担体と銀化合物粉末とを容器に入れて振と
うし付着させる方法、ニーダー等の混合機械を用いて付
着させる方法等が挙げられる。担体への銀化合物粉末の
付着量は、担体の重量の０．１重量％以上となるように
することが好ましく、特に長期に亘る持続性を求める場
合には付着量が担体重量の１０重量％以上となるように
することが好ましい。本発明方法により得られる抗菌剤
は、担体に担持される銀の有効量が高い利点があるが、
担体に担持される銀の有効量を更に高くしたい場合に
は、担体に銀化合物粉末を付着させて焼成する処理を繰
り返して行う方法を採用したり、担体に銀化合物粉末を
付着させる際に、グリセリン等の液体をバインダーとし
て用いる等の方法を採用することが好ましい。Examples of the method for adhering the silver compound powder to the carrier include a method in which the carrier and the silver compound powder are put in a container and shaken to adhere, and a method using a mixing machine such as a kneader. The amount of the silver compound powder adhered to the carrier is preferably 0.1% by weight or more of the weight of the carrier, and particularly when long-term sustainability is required, the amount adhered is 10% by weight of the carrier weight. It is preferable to set it as above. The antibacterial agent obtained by the method of the present invention has the advantage that the effective amount of silver supported on the carrier is high,
When it is desired to further increase the effective amount of silver supported on the carrier, a method of repeating the treatment of depositing the silver compound powder on the carrier and baking, or when depositing the silver compound powder on the carrier is used. It is preferable to adopt a method of using a liquid such as glycerin as a binder.
【００１１】担体に銀化合物粉末を付着させた後、これ
を焼成することにより銀化合物粉末が熱還元され、担体
表面に銀被膜が形成されて本発明の抗菌剤が得られる。
焼成温度は１５０℃以上が好ましいが、４００℃以上が
より好ましい。しかしながら、担体の種類によっては高
温で焼成すると分解したり溶解したりする虞れがあるた
め、焼成温度は４００℃〜１０００℃が好ましい。尚、
本発明において担体として多孔質物質を用いた場合、担
体表面のみならず、多孔質担体の孔内にも銀被膜が形成
されていても良い。After depositing the silver compound powder on the carrier, the silver compound powder is thermally reduced by baking it to form a silver film on the surface of the carrier, whereby the antibacterial agent of the present invention is obtained.
The firing temperature is preferably 150 ° C or higher, more preferably 400 ° C or higher. However, depending on the type of carrier, there is a risk of decomposition or dissolution when baked at a high temperature, so the baking temperature is preferably 400 ° C to 1000 ° C. still,
When a porous substance is used as the carrier in the present invention, the silver coating may be formed not only on the surface of the carrier but also in the pores of the porous carrier.
【００１２】本発明の抗菌剤は、例えば飲料水の殺菌消
毒、水中の藻の増殖抑制、樹脂製品へのカビ等の発生防
止、船底へのフジツボ付着防止、犬猫の糞尿による汚染
防止等の目的で利用することができるが、細菌、バクテ
リア、カビ、微生物等の死滅、発生、増殖の抑止等を図
るものであれば良く、上記の用途のみに限定されるもの
ではない。The antibacterial agent of the present invention can be used for sterilizing and disinfecting drinking water, suppressing the growth of algae in water, preventing the formation of mold and the like on resin products, preventing sticking of barnacles to ship bottoms, and preventing contamination by dog and cat excrement. Although it can be used for any purpose, it is not limited to the above-mentioned applications, as long as it can kill bacteria, bacteria, fungi, microorganisms and the like, and prevent the generation and growth of the bacteria.
【００１３】本発明抗菌剤により例えば水の処理を行う
には、本発明抗菌剤を充填したカラムに水を通液した
り、水中に本発明抗菌剤を浸漬する方法等が挙げられ
る。また家庭用浄水器等に利用する場合、本発明の抗菌
剤の層を活性炭の層とともに配置したり、活性炭と本発
明の抗菌剤を混合して用いる等の方法を採用することが
できる。In order to treat water with the antibacterial agent of the present invention, for example, a method of passing water through a column packed with the antibacterial agent of the present invention or immersing the antibacterial agent of the present invention in water can be mentioned. When used in a household water purifier or the like, a method of arranging a layer of the antibacterial agent of the present invention together with a layer of activated carbon or a method of mixing the activated carbon and the antibacterial agent of the present invention to use can be adopted.
【００１４】更に樹脂製品の処理を行うには、原料樹脂
中に本発明抗菌剤を練り込む方法を採用することができ
る。抗菌剤を練り込む樹脂としては可塑性のあるもので
あれば良く、例えばポリエチレン、ポリプロピレン、ポ
リスチレン、ＡＢＳ樹脂、ポリ塩化ビニル、ＭＭＡ樹脂
等が挙げれる。抗菌剤の樹脂への添加量は任意であり、
練り込み効率、抗菌性能、樹脂強度等を考慮して決定す
る。抗菌剤を練り込んだ樹脂は、球状、ペレット状、板
状、シート状、繊維状等の任意の形態に成形することが
できる。例えば板状、シート状、繊維状に成形する場
合、抗菌剤と樹脂とを予備混合し、エクストリューダー
等の混練機中で樹脂の軟化温度以上の温度で混練し、次
いでダイ等からシート状、板状、繊維状等に押出成形す
れば良い。また抗菌剤を練り込んだ球状、ペレット状樹
脂は、射出成形等によって所定の形状の抗菌性樹脂製品
とすることもできる。また本発明抗菌剤を樹脂製品表面
に塗布した後、塗布表面をヒートプレスする方法によっ
て、抗菌性樹脂製品を得ることもできる。In order to further treat the resin product, a method of kneading the antibacterial agent of the present invention into the raw material resin can be adopted. The resin into which the antibacterial agent is kneaded may be any resin having plasticity, and examples thereof include polyethylene, polypropylene, polystyrene, ABS resin, polyvinyl chloride, MMA resin and the like. The amount of antibacterial agent added to the resin is arbitrary,
It is determined in consideration of kneading efficiency, antibacterial performance, resin strength and the like. The resin in which the antibacterial agent is kneaded can be molded into any shape such as spherical shape, pellet shape, plate shape, sheet shape, and fiber shape. For example, in the case of molding into a plate shape, a sheet shape, or a fibrous shape, an antibacterial agent and a resin are premixed, kneaded in a kneader such as an extruder at a temperature equal to or higher than the softening temperature of the resin, and then a sheet shape from a die or the like. It may be extruded into a plate shape, a fiber shape or the like. In addition, the spherical or pellet resin in which the antibacterial agent is kneaded can be made into an antibacterial resin product having a predetermined shape by injection molding or the like. Further, after applying the antibacterial agent of the present invention on the surface of a resin product, the antibacterial resin product can be obtained by a method of heat pressing the applied surface.
【００１５】本発明の抗菌剤を船底塗料等の塗料中に添
加すると、抗菌性塗料として塗料塗布表面に抗菌性を付
与するために用いることができる。この塗料は油性でも
水性でも良い。また本発明抗菌剤を塗料中に添加する場
合、顔料と同様にして配合して分散させれば良いが、本
発明の抗菌剤は塗料中に添加する場合に限らず、塗料希
釈液中に添加して用いることもできる。When the antibacterial agent of the present invention is added to a paint such as a ship bottom paint, it can be used as an antibacterial paint for imparting antibacterial property to the surface to which the paint is applied. The paint may be oily or water based. When the antibacterial agent of the present invention is added to the paint, it may be blended and dispersed in the same manner as the pigment. However, the antibacterial agent of the present invention is not limited to the case of being added to the paint, and is added to the paint diluent. It can also be used.
【００１６】本発明の抗菌剤は、必要に応じて表面を研
磨して用いることもできる。本発明抗菌剤の表面を研磨
すると、美麗な金属光沢の外観となるため、鑑賞魚用水
槽の防藻剤として水槽内に入れて用いる等、装飾的な目
的も兼ねた用途への利用に好適である。The antibacterial agent of the present invention can be used by polishing the surface, if necessary. When the surface of the antibacterial agent of the present invention is polished, it has a beautiful metallic luster appearance. Therefore, it is suitable for use for a purpose that also has a decorative purpose, such as being used as an algae preventative agent for aquariums for ornamental fish. Is.
【００１７】[0017]
【実施例】以下、実施例、比較例を挙げて本発明を更に
詳細に説明する。尚、実施例、比較例で用いた抗菌剤は
以下のように製造したものである。The present invention will be described below in further detail with reference to examples and comparative examples. The antibacterial agents used in Examples and Comparative Examples were produced as follows.
【００１８】抗菌剤Ａ（本発明品） アルミナ球（粒径３ｍｍ）１００重量部と、酸化銀粉末
（粒径１μ以下）５重量部を、ポリエチレン容器に入れ
て混合し、アルミナ球に酸化銀粉末を付着させた。次い
で８００℃で２時間焼成した。Antibacterial agent A (product of the present invention) 100 parts by weight of alumina spheres (particle size: 3 mm) and 5 parts by weight of silver oxide powder (particle size: 1 μ or less) are put in a polyethylene container and mixed to form silver oxide on the alumina spheres. The powder was deposited. Then, it was baked at 800 ° C. for 2 hours.
【００１９】抗菌剤Ｂ（本発明品） 表面スリ入りガラス球（粒径２ｍｍ）１００重量部に、
酸化銀粉末（粒径１μ以下）２重量部を、ポリエチレン
容器に入れて混合し、ガラス球に酸化銀粉末を付着さ
せ、次いで４００℃で４時間焼成した。Antibacterial agent B (product of the present invention) To 100 parts by weight of glass spheres (particle diameter: 2 mm) containing surface abrasion,
2 parts by weight of silver oxide powder (particle size 1 μm or less) was put into a polyethylene container and mixed, the silver oxide powder was adhered to glass spheres, and then baked at 400 ° C. for 4 hours.
【００２０】抗菌剤Ｃ（本発明品） 海砂１００重量部と炭酸銀粉末（粒径１μ以下）３重量
部を、ポリエチレン容器に入れて混合し、海砂に炭酸銀
粉末を付着させた後、１０００℃で２時間焼成した。Antibacterial agent C (product of the present invention) 100 parts by weight of sea sand and 3 parts by weight of silver carbonate powder (particle size 1 μm or less) were put in a polyethylene container and mixed, and silver carbonate powder was adhered to the sea sand. It was baked at 1000 ° C. for 2 hours.
【００２１】抗菌剤Ｄ（本発明品） ゼオライト（平均粒径１０μ以下）１００重量部と、酸
化銀粉末５重量部を、ポリエチレン容器に入れて混合
し、ゼオライトに酸化銀粉末を付着させた後、４００℃
で８時間焼成した。Antibacterial agent D (product of the present invention) 100 parts by weight of zeolite (average particle size of 10 μm or less) and 5 parts by weight of silver oxide powder are put in a polyethylene container and mixed, and silver oxide powder is adhered to the zeolite. , 400 ° C
It was baked for 8 hours.
【００２２】抗菌剤Ｅ（本発明品） ケイ酸粉末（平均粒径５μ以下）１００重量部と酸化銀
粉末３重量部を、ポリエチレン容器に入れて混合し、ケ
イ酸粉末に酸化銀粉末を付着させた後、５００℃で４時
間焼成した。Antibacterial agent E (product of the present invention) 100 parts by weight of silicic acid powder (average particle size of 5 μ or less) and 3 parts by weight of silver oxide powder are put in a polyethylene container and mixed, and the silver oxide powder is attached to the silicic acid powder. After that, it was baked at 500 ° C. for 4 hours.
【００２３】抗菌剤Ｆ（比較品） ５％硝酸銀水溶液２００重量部中に、ケイ酸粉末（平均
粒径５μ以下）１００重量部を２４時間浸漬した後、担
体を硝酸銀水溶液中から取り出し、硝酸イオン濃度が１
ｐｐｍ以下になるまで脱イオン水で水洗した。次いで１
００℃で５時間乾燥後、８００℃で２時間焼成した。Antibacterial agent F (comparative) After immersing 100 parts by weight of silicic acid powder (average particle size 5 μm or less) in 200 parts by weight of a 5% silver nitrate aqueous solution for 24 hours, the carrier was taken out from the silver nitrate aqueous solution and nitrate ions were added. Concentration is 1
It was washed with deionized water until it became less than ppm. Then 1
After drying at 00 ° C. for 5 hours, it was baked at 800 ° C. for 2 hours.
【００２４】抗菌剤Ｇ（比較品） 酸化銀５重量部を水５００重量部に添加して３時間攪拌
し、この溶液中に表面スリ入りガラス球（粒径２ｍｍ以
下）１００重量部を浸漬した後、ガラス球を酸化銀水溶
液中から取り出して１００℃で５時間乾燥させた後、４
００℃で４時間焼成した。Antibacterial agent G (comparative product) 5 parts by weight of silver oxide was added to 500 parts by weight of water and stirred for 3 hours, and 100 parts by weight of glass beads (particle diameter: 2 mm or less) with surface-powders were immersed in this solution. Then, the glass spheres were taken out from the silver oxide aqueous solution and dried at 100 ° C. for 5 hours, and then 4
It was baked at 00 ° C. for 4 hours.
【００２５】抗菌剤Ｈ（比較品） 抗菌剤Ａと同様の担体１００重量部と、平均粒径約５０
μの銀粉末５重量部をポリエチレン容器に入れて混合し
た後、担体を取り出し、次いでこの担体を８００℃で２
時間焼成した。Antibacterial agent H (comparative product) 100 parts by weight of the same carrier as the antibacterial agent A and an average particle size of about 50
5 parts by weight of silver powder of μ was put in a polyethylene container and mixed, and then the carrier was taken out.
Fired for hours.
【００２６】実施例１〜３、比較例１〜２ 表１に示す抗菌剤１０ｇを内径２cmのステンレスカラム
に充填し、このカラムに水道水を２００ml／分で連続し
て通水し、１日後、１０日後、２０日後の通水液中の銀
イオン濃度を原子吸光分析法により測定した。得られた
結果を表１に示す。Examples 1 to 3 and Comparative Examples 1 and 2 10 g of the antibacterial agent shown in Table 1 was packed in a stainless steel column having an inner diameter of 2 cm, and tap water was continuously passed through this column at 200 ml / min, and after 1 day. The silver ion concentration in the water flow solution after 10 days and 20 days was measured by atomic absorption spectrometry. Table 1 shows the obtained results.
【００２７】[0027]
【表１】 [Table 1]
【００２８】実施例４〜５、比較例３ 表２に示す抗菌剤２ｇをＡＢＳ樹脂１００ｇに練り込ん
だ後、成形機を用いて６０ｍｍ×４０ｍｍ×３ｍｍのプ
レート板を成形した。次いで大腸菌分散液（５×１０5
cells/ml）２００ｇに、上記抗菌剤を練り込んで成形し
たプレート板を浸漬して２４時間振とう接触させ、大腸
菌分散液中の生菌数の経時変化を調べた。結果を表２に
示す。Examples 4 to 5 and Comparative Example 3 After 2 g of the antibacterial agent shown in Table 2 was kneaded into 100 g of ABS resin, a plate plate of 60 mm × 40 mm × 3 mm was molded using a molding machine. Then E. coli dispersion (5 x 10 5
The plate plate formed by kneading the above-mentioned antibacterial agent into 200 g of cells / ml) was immersed and contacted with shaking for 24 hours, and the change with time of the viable cell count in the Escherichia coli dispersion was examined. Table 2 shows the results.
【００２９】[0029]
【表２】 [Table 2]
【００３０】[0030]
【発明の効果】以上説明したように本発明の抗菌剤は、
銀化合物粉末を付着させた担体を焼成して担体表面に銀
被膜を形成してなるものであるため、担体に担持される
銀としての有効量を充分多くすることができ、担体に銀
化合物を吸着ないし担持させた従来の抗菌剤に比べて高
い抗菌効果を長期間持続できる。また本発明方法は、担
体に銀化合物の粉末を付着させ、焼成して銀被膜を形成
するようにしたため、本発明方法によれば、担体を銀化
合物の水溶液に浸漬した後、焼成する等の方法で得られ
る従来の抗菌剤に比べ、銀の担持量の多い抗菌剤を得る
ことができる。しかも本発明方法では、簡単な製造作業
によって担体表面に銀被膜を形成でき、蒸着や銀鏡反応
を利用して銀被膜を形成する方法に比べて安価かつ容易
に銀被膜を有する抗菌剤を製造できる。また製造に用い
る薬品の種類も少なくてすみ、廃棄処分が問題となるよ
うな副生成物の生成もない等の種々の利点を有する。As described above, the antibacterial agent of the present invention is
Since the carrier on which the silver compound powder is adhered is baked to form a silver coating on the surface of the carrier, the effective amount of silver supported on the carrier can be sufficiently increased, and the silver compound can be added to the carrier. A high antibacterial effect can be maintained for a long period of time as compared with conventional antibacterial agents that are adsorbed or supported. Further, in the method of the present invention, the powder of the silver compound is adhered to the carrier and baked to form a silver coating. Therefore, according to the method of the present invention, the carrier is immersed in an aqueous solution of the silver compound and then baked. As compared with the conventional antibacterial agent obtained by the method, an antibacterial agent having a large amount of silver supported can be obtained. Moreover, according to the method of the present invention, a silver coating can be formed on the surface of a carrier by a simple manufacturing operation, and an antibacterial agent having a silver coating can be produced more easily and cheaply as compared with a method of forming a silver coating by utilizing vapor deposition or silver mirror reaction. . In addition, there are various advantages such that the number of kinds of chemicals used for manufacturing is small and there is no generation of by-products that cause a problem of disposal.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 田中 修一 東京都葛飾区堀切４丁目66番１号 ミヨシ 油脂株式会社内 (72)発明者 松本 晁暎 東京都葛飾区堀切４丁目66番１号 ミヨシ 油脂株式会社内 (72)発明者 守屋 雅文 東京都葛飾区堀切４丁目66番１号 ミヨシ 油脂株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shuichi Tanaka 4-66-1, Horikiri, Katsushika-ku, Tokyo Miyoshi Oil & Fat Co., Ltd. (72) Inventor Akiaki Matsumoto 4-66-1, Horikiri, Katsushika-ku, Tokyo Miyoshi Oils and Fats Co., Ltd. (72) Inventor Masafumi Moriya 4-66-1 Horikiri, Katsushika-ku, Tokyo Miyoshi Oils and Fats Co., Ltd.
Claims (3)
銀化合物粉末を焼成して形成した銀被膜を有することを
特徴とする抗菌剤。1. An antibacterial agent having a silver coating formed on the surface of a carrier by baking a silver compound powder adhered to the surface of the carrier.
後、焼成して担体表面に銀被膜を形成することを特徴と
する抗菌剤の製造方法。2. A method for producing an antibacterial agent, which comprises depositing a silver compound powder on the surface of a carrier and then baking the powder to form a silver film on the surface of the carrier.
酸銀粉末である請求項２記載の抗菌剤の製造方法。3. The method for producing an antibacterial agent according to claim 2, wherein the silver compound powder is silver oxide powder and / or silver carbonate powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8472196A JPH09249511A (en) | 1996-03-13 | 1996-03-13 | Antimicrobial agent and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8472196A JPH09249511A (en) | 1996-03-13 | 1996-03-13 | Antimicrobial agent and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09249511A true JPH09249511A (en) | 1997-09-22 |
Family
ID=13838555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8472196A Pending JPH09249511A (en) | 1996-03-13 | 1996-03-13 | Antimicrobial agent and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09249511A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007332131A (en) * | 2006-05-15 | 2007-12-27 | Tottori Univ | Gradually disintegrating antibacterial agent, antibacterial liquid by using the same and device for forming the antibacterial liquid |
| CN103288290A (en) * | 2012-03-01 | 2013-09-11 | 株式会社日立制作所 | Desalination system and desalination treatment method |
| CN106270479A (en) * | 2015-05-21 | 2017-01-04 | 中国石油化工股份有限公司 | A kind of attapulgite-nanometer silver composite inorganic powder and preparation method |
-
1996
- 1996-03-13 JP JP8472196A patent/JPH09249511A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007332131A (en) * | 2006-05-15 | 2007-12-27 | Tottori Univ | Gradually disintegrating antibacterial agent, antibacterial liquid by using the same and device for forming the antibacterial liquid |
| CN103288290A (en) * | 2012-03-01 | 2013-09-11 | 株式会社日立制作所 | Desalination system and desalination treatment method |
| CN106270479A (en) * | 2015-05-21 | 2017-01-04 | 中国石油化工股份有限公司 | A kind of attapulgite-nanometer silver composite inorganic powder and preparation method |
| CN106270479B (en) * | 2015-05-21 | 2018-12-28 | 中国石油化工股份有限公司 | A kind of attapulgite-nano silver composite inorganic powder and preparation method |
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