JPH07118114A - Metallic powder for antimicrobial use and antimicrobial coating composition - Google Patents
Metallic powder for antimicrobial use and antimicrobial coating compositionInfo
- Publication number
- JPH07118114A JPH07118114A JP5264439A JP26443993A JPH07118114A JP H07118114 A JPH07118114 A JP H07118114A JP 5264439 A JP5264439 A JP 5264439A JP 26443993 A JP26443993 A JP 26443993A JP H07118114 A JPH07118114 A JP H07118114A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- silver
- copper
- antibacterial
- antimicrobial
- 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
- 239000000843 powder Substances 0.000 title claims abstract description 62
- 239000008199 coating composition Substances 0.000 title claims abstract description 5
- 230000000845 anti-microbial effect Effects 0.000 title abstract 8
- 229910052709 silver Inorganic materials 0.000 claims abstract description 21
- 239000004332 silver Substances 0.000 claims abstract description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052802 copper Inorganic materials 0.000 claims abstract description 14
- 239000010949 copper Substances 0.000 claims abstract description 14
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 7
- 239000000956 alloy Substances 0.000 claims abstract description 7
- 238000004438 BET method Methods 0.000 claims abstract 3
- 230000000844 anti-bacterial effect Effects 0.000 claims description 50
- 229910052751 metal Inorganic materials 0.000 claims description 27
- 239000002184 metal Substances 0.000 claims description 27
- 238000000576 coating method Methods 0.000 abstract description 15
- 239000011248 coating agent Substances 0.000 abstract description 14
- 238000002156 mixing Methods 0.000 abstract description 6
- 239000002245 particle Substances 0.000 abstract description 5
- 239000004599 antimicrobial Substances 0.000 abstract 1
- 239000003973 paint Substances 0.000 description 19
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 15
- -1 silver ions Chemical class 0.000 description 8
- 235000021355 Stearic acid Nutrition 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 7
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 7
- 239000008117 stearic acid Substances 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 6
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 5
- 229910001431 copper ion Inorganic materials 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 238000011156 evaluation Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- NEIHULKJZQTQKJ-UHFFFAOYSA-N [Cu].[Ag] Chemical compound [Cu].[Ag] NEIHULKJZQTQKJ-UHFFFAOYSA-N 0.000 description 3
- JRBRVDCKNXZZGH-UHFFFAOYSA-N alumane;copper Chemical compound [AlH3].[Cu] JRBRVDCKNXZZGH-UHFFFAOYSA-N 0.000 description 3
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010828 elution Methods 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 229920002635 polyurethane Polymers 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 206010011409 Cross infection Diseases 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 206010041925 Staphylococcal infections Diseases 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 229910001297 Zn alloy Inorganic materials 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 208000015688 methicillin-resistant staphylococcus aureus infectious disease Diseases 0.000 description 2
- 230000035755 proliferation Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 206010029803 Nosocomial infection Diseases 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- FOIXSVOLVBLSDH-UHFFFAOYSA-N Silver ion Chemical compound [Ag+] FOIXSVOLVBLSDH-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- BZHJMEDXRYGGRV-UHFFFAOYSA-N Vinyl chloride Chemical compound ClC=C BZHJMEDXRYGGRV-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、抗菌用金属粉末に関す
るものおよび優れた抗菌性が得られる抗菌性塗料組成物
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antibacterial metal powder and an antibacterial coating composition having excellent antibacterial properties.
【０００２】[0002]
【従来の技術】銀イオンや銅イオンが抗菌性を有するこ
とは古くからよく知られている。しかし、従来までの銀
粉末、または銅粉末では優れた抗菌性が得られず、多く
混合しなければならなかった。従って、少量でも銀イオ
ンの効果が発揮できる色々な方法が考察されてきた。例
えば、ゼオライトを銀イオンで置換したもの（特開平3-
161409号) 、銀のコロイド粒子から成る抗菌材（特開平
4-321628号) 、銀含有物にリン酸含有化合物を共存させ
る方法（特開平3- 38504号) などがある。2. Description of the Related Art It has long been known that silver ions and copper ions have antibacterial properties. However, excellent antibacterial properties were not obtained with the conventional silver powder or copper powder, and a large amount of them had to be mixed. Therefore, various methods have been considered in which the effect of silver ions can be exhibited even in a small amount. For example, one in which zeolite is replaced by silver ion (Japanese Patent Laid-Open No.
161409), an antibacterial material composed of silver colloidal particles
4-321628), and a method in which a phosphoric acid-containing compound is allowed to coexist in a silver-containing material (JP-A-3-38504).
【０００３】[0003]
【発明が解決しようとする問題点】これらの方法は、合
成樹脂に練込み、抗菌性成形物を得るためには効果があ
り、色々なものが商品化されている。しかし、塗料用と
しては、やはり多く混合する必要があり良くないもので
ある。さらに、リン酸などの化合物を含有するものは、
人体に対する安全性についても問題があり、金属で優れ
た性能が得られる材料が望まれていた。[Problems to be Solved by the Invention] These methods are effective for obtaining an antibacterial molded product by kneading into a synthetic resin, and various products have been commercialized. However, it is not good for paints because it needs to be mixed in a large amount. Further, those containing a compound such as phosphoric acid,
There is also a problem with respect to safety for the human body, and there has been a demand for a material that is excellent in performance as a metal.
【０００４】そこで本発明の目的は、塗料に混合して塗
膜を形成した場合、優れた抗菌性を発揮する抗菌用金属
粉末及び抗菌性塗料組成物を提供することにある。Therefore, an object of the present invention is to provide an antibacterial metal powder and an antibacterial paint composition which exhibit excellent antibacterial properties when mixed with a paint to form a coating film.
【０００５】[0005]
【問題を解決するための手段】即ち本発明は、銀または
銅、もしくは銀及び／または銅を容量で５０％以上含有
する合金の粉末で、粒子形状がアスペクト比１０以上の
片状粉末であり、ＢＥＴ法による比表面積値が5000cm2/
g 以上であり、このような抗菌用金属粉末を塗料に容量
で 0.1〜２０％混合すると非常に優れた抗菌効果がある
ことを見出し、本発明を完成した。[Means for Solving the Problems] That is, the present invention is a powder of silver or copper, or an alloy containing silver and / or copper in an amount of 50% or more by volume, which is a flaky powder having an aspect ratio of 10 or more. , BET specific surface area value is 5000cm 2 /
It was g or more, and it was found that mixing 0.1 to 20% by volume of such an antibacterial metal powder in a paint has a very excellent antibacterial effect, and completed the present invention.
【０００６】以下、本発明の細部について説明する。本
発明の金属又は合金の組成は銀及び／または銅を容量で
５０％以上含有することが好ましい。院内感染が社会問
題化しているＭＲＳＡの増殖防止のためには、銀，銅と
もに同じ効果を示したが、銀及び／または銅の含有量が
５０％未満の合金粉末であると優れた抗菌効果が得られ
ない場合がある。銀，銅，銀−銅合金粉末が非常に優れ
た抗菌効果を示すが、銀及び／又は銅の含有量が５０％
以上であれば銅−アルミニウム合金粉末，銅−亜鉛合金
粉末，銀−アルミニウム合金粉末などを使用目的に応じ
て選定することができる。ただし、鉄，ニッケル，コバ
ルトなど硬くする合金組成は、アスペクト比１０以上の
片状粉末を得ることが難しくなり、良くない。The details of the present invention will be described below. The composition of the metal or alloy of the present invention preferably contains 50% or more by volume of silver and / or copper. In order to prevent the proliferation of MRSA, which is a social problem of nosocomial infection, both silver and copper showed the same effect, but an alloy powder having a silver and / or copper content of less than 50% has an excellent antibacterial effect. May not be obtained. Silver, copper, and silver-copper alloy powders have very good antibacterial effect, but the content of silver and / or copper is 50%.
If it is above, copper-aluminum alloy powder, copper-zinc alloy powder, silver-aluminum alloy powder, etc. can be selected according to the purpose of use. However, a hard alloy composition such as iron, nickel, and cobalt is not preferable because it becomes difficult to obtain flaky powder having an aspect ratio of 10 or more.
【０００７】抗菌用金属粉末の粒子形状は、アスペクト
比１０以上の片状粉末であることが必要である。アスペ
クト比とは、粒子直径÷粒子の厚さのことであり、でき
るだけ厚さの薄い片状粉末が好ましい。アスペクト比が
１０より小さいものは、塗料中に多く混合しなければな
らず、また抗菌効果も良くない。工業的に好ましいアス
ペクト比は３０〜５０である。本発明において、粉末の
ＢＥＴ法による比表面積値が5000cm2/g 以上であること
も必要である。The particle shape of the antibacterial metal powder must be a flaky powder having an aspect ratio of 10 or more. The aspect ratio is (particle diameter) / (particle thickness), and flaky powder having the smallest possible thickness is preferable. Those having an aspect ratio of less than 10 must be mixed in a large amount in the paint, and the antibacterial effect is not good. The industrially preferable aspect ratio is 30 to 50. In the present invention, it is also necessary that the BET specific surface area value of the powder is 5000 cm 2 / g or more.
【０００８】ＢＥＴ法比表面積値とは、表面に吸着占有
面積のわかった分子を吸着させるガス吸着法で測定した
粉末の比表面積値のことである。比表面積値が5000cm2/
g 未満であると抗菌効果が弱く、塗料中に金属粉末を多
く混合しなければならない。比表面積値は大きいほど優
れた抗菌効果を示す傾向にあるが、あまり大きくなると
粉末が再凝集したり、塗料中で凝集したり、分散不良を
生じたりする。好ましい比表面積値は7000cm2/g 〜2000
0 cm2/g である。本発明の抗菌用金属粉末を塗料に混合
すると抗菌性塗料組成物となる。The BET specific surface area value is a specific surface area value of a powder measured by a gas adsorption method in which molecules whose adsorption occupied area is known are adsorbed on the surface. Specific surface area of 5000 cm 2 /
If it is less than g, the antibacterial effect is weak and a large amount of metal powder must be mixed in the paint. The larger the specific surface area value, the better the antibacterial effect tends to be. However, if the specific surface area value is too large, the powder reaggregates, aggregates in the paint, or causes poor dispersion. Preferred specific surface area value is 7000 cm 2 / g ~ 2000
It is 0 cm 2 / g. When the antibacterial metal powder of the present invention is mixed with a paint, an antibacterial paint composition is obtained.
【０００９】塗料としては、フェノール, メラミン, ポ
リエステル, エポキシ, ケイ素, ポリウレタン, 塩化ビ
ニル, 酢酸ビニル, アクリル, スチロール, ポリアミド
などの油性塗料から, アクリルエマルジョン, ポリウレ
タンエマルジョンなどをベースにした水性塗料などに使
用できる。抗菌用金属粉末の塗料に対する混合量は、目
的とする抗菌効果や、粉末の比表面積値, 塗装方法, 塗
料組成などによって変える必要があるが、樹脂成分に対
して0.1 ％から効果が認められ２０％まで混合すること
ができる。あまり少なくても十分な抗菌効果が得られ
ず、また、多く混合すると塗膜物性などを悪くする。Examples of paints include oil-based paints such as phenol, melamine, polyester, epoxy, silicon, polyurethane, vinyl chloride, vinyl acetate, acrylic, styrene, and polyamide, and water-based paints based on acrylic emulsion, polyurethane emulsion, etc. Can be used. The amount of antibacterial metal powder mixed with the paint must be changed depending on the desired antibacterial effect, the specific surface area of the powder, the coating method, the paint composition, etc. % Can be mixed. If the amount is too small, a sufficient antibacterial effect cannot be obtained, and if it is mixed in a large amount, the physical properties of the coating film are deteriorated.
【００１０】アスペクト比３０〜４０，比表面積値7000
〜20000cm2/gの抗菌用銀粉末もしくは銅粉末を塗料に混
合する場合の最適配合量は、樹脂成分に対して容量で１
〜４％である。本発明の粉末特性を有する片状粉末は、
ボールミル，ロールミル，スタンプミル，振動ミル，媒
体攪拌ミル，タワーミルなどで、金属粒あるいは金属片
を機械的に片状に展延加工することによって製造でき
る。なお、粉砕加工中にステアリン酸などの高級脂肪酸
を0.01〜１％添加するとアスペクト比の大きい片状粉末
を容易に製造することができる。Aspect ratio 30-40, specific surface area value 7,000
The optimum blending amount when mixing antibacterial silver powder or copper powder of ~ 20000 cm 2 / g into the paint is 1 volume by volume with respect to the resin component.
~ 4%. The flaky powder having the powder characteristics of the present invention is
A ball mill, a roll mill, a stamp mill, a vibration mill, a medium stirring mill, a tower mill, or the like can be used to mechanically spread metal particles or metal pieces into a piece. In addition, when higher fatty acid such as stearic acid is added in an amount of 0.01 to 1% during pulverization, a flaky powder having a large aspect ratio can be easily produced.
【００１１】[0011]
【作用】本発明の抗菌用金属粉末が優れた抗菌効果を発
揮する理由として次のことが考えられる。金属粉末のア
スペクト比が大きいことは塗膜中に金属粉末が塗膜面に
平行に配列しやすくなる。すなわち、少ない混入量でも
金属粉末が被塗装全面を均一に被覆し、銀イオン，銅イ
オンによる抗菌効果が得られやすくなる。金属粉末の比
表面積値が大きいことも、銀イオンあるいは銅イオンの
溶出効果を高めている。すなわち、比表面積値が大きい
ことは、外部雰囲気と接触する機会が多くなり抗菌効果
得られやすくなる。アスペクト比が小さく、比表面積値
の小さい金属粉末は、銀あるいは銅イオンの溶出も少な
く抗菌効果が悪い。アスペクト比が小さく、比表面積値
の大きい金属粉末は塗膜中に平行に配列しなく、また沈
降も早いため、優れた抗菌効果が得られない。アスペク
ト比が大きくても比表面積値が小さい金属粉末は塗膜中
に平行に配列するが、銀あるいは銅イオンの溶出量が少
なく、良い抗菌効果が得られない。The following is considered as the reason why the antibacterial metal powder of the present invention exhibits an excellent antibacterial effect. The large aspect ratio of the metal powder facilitates the arrangement of the metal powder in the coating film parallel to the coating film surface. That is, even with a small mixing amount, the metal powder uniformly coats the entire surface to be coated, and the antibacterial effect of silver ions and copper ions is easily obtained. The large specific surface area of the metal powder also enhances the elution effect of silver ions or copper ions. That is, when the specific surface area value is large, the chance of contact with the external atmosphere increases and the antibacterial effect is easily obtained. The metal powder having a small aspect ratio and a small specific surface area has a poor antibacterial effect due to less elution of silver or copper ions. Since the metal powder having a small aspect ratio and a large specific surface area is not arranged in parallel in the coating film and sediments quickly, an excellent antibacterial effect cannot be obtained. Metal powders having a small specific surface area even if the aspect ratio is large are arranged in parallel in the coating film, but the elution amount of silver or copper ions is small and a good antibacterial effect cannot be obtained.
【００１２】[0012]
【実施例】以下、実施例により、本発明を具体的に説明
するが、これにより本発明の抗菌用金属粉末の使用範囲
が限定されるものではない。なお、文中にある％は全て
容量％である。 実施例(1) アスペクト比１，比表面積値600cm2/gの銀粉末に0.01％
のステアリン酸を添加し、ボールミルで展延加工し、表
１に示す実験 No.1,No.2,No.3,No.4,No.5 の抗菌用銀粉
末を製造した。EXAMPLES The present invention will be described in detail below with reference to examples, but the scope of use of the antibacterial metal powder of the present invention is not limited thereby. All% in the text are% by volume. Example (1) Aspect ratio 1, specific surface area value 0.01% in silver powder of 600 cm 2 / g
Stearic acid was added and spread by a ball mill to produce antibacterial silver powders of experiments No. 1, No. 2, No. 3, No. 4 and No. 5 shown in Table 1.
【００１３】実施例(2) アスペクト比１，比表面積値400cm2/gの銅粉末に0.05％
のステアリン酸を添加し、ボールミルで展延加工し、表
１に示す実験 No.6,No.7,No.8 の抗菌用銅粉末を製造し
た。 実施例(3) アスペクト比１，比表面積値450cm2/gの銀−銅合金粉に
0.02％のステアリン酸を添加し、ボールミルで展延加工
し、表１に示す実験 No.9,No.10 の抗菌用銀−銅粉末を
製造した。Example (2) Aspect ratio 1, specific surface area value 0.05% in copper powder of 400 cm 2 / g
Stearic acid was added and spread by a ball mill to produce antibacterial copper powders of Experiments No. 6, No. 7 and No. 8 shown in Table 1. Example (3) Silver-copper alloy powder with aspect ratio 1 and specific surface area value 450 cm 2 / g
0.02% of stearic acid was added and spread by a ball mill to produce antibacterial silver-copper powders of Experiment Nos. 9 and 10 shown in Table 1.
【００１４】実施例(4) アスペクト比１，比表面積値900cm2/gの銀−アルミニウ
ム合金粉に0.5 ％のステアリン酸を添加し、ボールミル
で展延加工し、表１に示す実験 No.11, No.12,No.13 の
抗菌用銀−アルミニウム粉末を製造した。 実施例(5) アスペクト比１，比表面積値800cm2/gの銅−アルミニウ
ム合金粉に0.2 ％のステアリン酸を添加し、ボールミル
で展延加工し、表１に示す実験 No.14, No.15の抗菌用
銅−アルミニウム粉末を製造した。Example (4) Experiment No. 11 shown in Table 1 was carried out by adding 0.5% of stearic acid to silver-aluminum alloy powder having an aspect ratio of 1 and a specific surface area of 900 cm 2 / g, and spreading it with a ball mill. No. 12, No. 13 antibacterial silver-aluminum powders were produced. Example (5) Experiment No. 14 and No. 14 shown in Table 1 were carried out by adding 0.2% of stearic acid to copper-aluminum alloy powder having an aspect ratio of 1 and a specific surface area value of 800 cm 2 / g, and spreading the mixture with a ball mill. 15 antibacterial copper-aluminum powders were produced.
【００１５】実施例(6) アスペクト比１，比表面積値400cm2/gの銅−亜鉛合金粉
に１％のステアリン酸を添加し、振動ミルで展延加工
し、表１に示す実験 No.16, No.17 の抗菌用銅−亜鉛粉
末を製造した。 実施例(7) 実施例(1) 〜実施例(6) で製造した抗菌用金属粉末をア
クリル塗料に１％混合し、20μm 厚の塗膜を作成し抗菌
力評価試験を実施した。被験菌としてEscherichia coli
を用い、初期菌数 9.2×105 cells/mlでドロップ法によ
り６時間後，24時間後の１ｍl 当りの生菌数を調査し
た。その結果、すべての塗膜とも６時間後には生菌数０
と非常に優れた結果を示した。Example (6) 1% stearic acid was added to a copper-zinc alloy powder having an aspect ratio of 1 and a specific surface area value of 400 cm 2 / g, the mixture was spread by a vibration mill, and the experiment No. 1 shown in Table 1 was used. No. 16, No. 17 antibacterial copper-zinc powder was produced. Example (7) 1% of the antibacterial metal powder produced in Examples (1) to (6) was mixed with an acrylic paint to prepare a 20 μm thick coating film, and an antibacterial activity evaluation test was carried out. Escherichia coli as test organism
The initial number of bacteria was 9.2 × 10 5 cells / ml, and the number of viable bacteria per 1 ml after 6 hours and 24 hours was examined by the drop method. As a result, the number of viable cells was 0 after 6 hours for all coating films.
And showed very good results.
【００１６】実施例(8) 実施例(1) 〜実施例(6) で製造した抗菌用金属粉末をポ
リウレタン塗料に 0.1％, １％，３％混合し、50μm 厚
の塗膜を作成し抗菌力評価試験を実施例(7) と同じ条件
で実施した結果、全ての塗膜とも６時間後には生菌数０
であった。 実施例(9) 実施例(1) 〜実施例(6) で製造した抗菌用金属粉末を水
性アクリルエマルジョンに４％混合し、30μm 厚の塗膜
を作成し、抗菌力評価試験を実施例(7) と同じ条件で実
施した結果、全ての塗膜とも６時間後には生菌数０であ
った。Example (8) The antibacterial metal powders produced in Examples (1) to (6) were mixed in a polyurethane paint at 0.1%, 1% and 3% to prepare a coating film having a thickness of 50 μm. As a result of carrying out the force evaluation test under the same conditions as in Example (7), the viable cell count was 0 after 6 hours for all the coating films.
Met. Example (9) The antibacterial metal powder prepared in Examples (1) to (6) was mixed with 4% of an aqueous acrylic emulsion to form a 30 μm thick coating film, and an antibacterial activity evaluation test was conducted. As a result of carrying out under the same conditions as in 7), the viable cell count was 0 after 6 hours for all the coating films.
【００１７】[0017]
【表１】 [Table 1]
【００１８】比較例(1) 〜比較例(9) 比較のため、表２に示す金属粉末をアクリル塗料に１％
混合し、20μm 厚の塗膜を作成し、抗菌力評価試験を実
施例(7) と同じ条件で実施した結果、表２に示すよう
に、生菌数の減少は認められるが０にはならなかった。Comparative Examples (1) to (9) For comparison, the metal powder shown in Table 2 was added to an acrylic paint at 1%.
After mixing, a coating film having a thickness of 20 μm was prepared, and an antibacterial activity evaluation test was conducted under the same conditions as in Example (7). As a result, as shown in Table 2, a decrease in the viable cell count was observed, but it was not 0 There wasn't.
【００１９】[0019]
【表２】 [Table 2]
【００２０】[0020]
【発明の効果】本発明の抗菌用金属粉末は塗料用として
優れた抗菌効果を示すことから、院内感染が社会的問題
化しているＭＲＳＡ増殖防止のため医療機器をはじめ、
床材、壁材などに塗布して使用できる。また、金属であ
るため、人体に対する毒性も非常に少なく医療分野以外
にも農林水産分野，食品加工分野，寝装分野，電子工業
分野，水処理分野等に使用できる、新しい抗菌用材料で
ある。The antibacterial metal powder of the present invention exhibits an excellent antibacterial effect as a paint, and therefore, it is used for preventing MRSA proliferation, which is a social problem of nosocomial infections, including medical devices.
Can be used by applying it to floors and walls. In addition, since it is a metal, it has very little toxicity to the human body and is a new antibacterial material that can be used in the fields of agriculture, forestry and fisheries, food processing, bedding, electronic industry, water treatment, etc. in addition to the medical field.
Claims (2)
を容量で５０％以上含有する合金の粉末で、粒子形状が
アスペクト比１０以上の片状粉末であり、ＢＥＴ法によ
る比表面積値が5000cm2/g 以上であることを特徴とする
抗菌用金属粉末。1. A powder of silver or copper, or an alloy powder containing 50% or more by volume of silver and / or copper, which is a flaky powder having an aspect ratio of 10 or more, and a specific surface area value by a BET method of 5000 cm. An antibacterial metal powder having a content of 2 / g or more.
を容量で５０％以上含有する合金の粉末で、粒子形状が
アスペクト比１０以上の片状粉末であり、ＢＥＴ法によ
る比表面積値が5000cm2/g 以上である抗菌用金属粉末を
容量で 0.1〜20％含有することを特徴とする抗菌性塗料
組成物。2. A powder of silver or copper, or an alloy powder containing 50% or more by volume of silver and / or copper, which is a flaky powder having an aspect ratio of 10 or more, and a specific surface area value by a BET method of 5000 cm. An antibacterial coating composition containing 0.1 to 20% by volume of antibacterial metal powder of 2 / g or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5264439A JPH07118114A (en) | 1993-10-22 | 1993-10-22 | Metallic powder for antimicrobial use and antimicrobial coating composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5264439A JPH07118114A (en) | 1993-10-22 | 1993-10-22 | Metallic powder for antimicrobial use and antimicrobial coating composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07118114A true JPH07118114A (en) | 1995-05-09 |
Family
ID=17403214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5264439A Pending JPH07118114A (en) | 1993-10-22 | 1993-10-22 | Metallic powder for antimicrobial use and antimicrobial coating composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07118114A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997047822A1 (en) * | 1996-06-14 | 1997-12-18 | Jong Chun Kim | Woven fabric mat and woven fabric mat fastener |
| JPH1017406A (en) * | 1996-07-05 | 1998-01-20 | Catalysts & Chem Ind Co Ltd | Antibacterial agent |
| US5935609A (en) * | 1996-04-05 | 1999-08-10 | Fountainhead Technologies | Self-regulating water purification composition |
| US6254894B1 (en) | 1996-04-05 | 2001-07-03 | Zodiac Pool Care, Inc. | Silver self-regulating water purification compositions and methods |
| JP2007131551A (en) * | 2005-11-08 | 2007-05-31 | Catalysts & Chem Ind Co Ltd | Antibacterial agent |
| JP2007238483A (en) * | 2006-03-07 | 2007-09-20 | Catalysts & Chem Ind Co Ltd | Antibacterial cosmetic |
| JP2011021014A (en) * | 2009-07-16 | 2011-02-03 | Ind Technol Res Inst | Composition having persistent antibacterial property, and antibacterial film and antibacterial spray, obtained by using the same |
| CN101999408A (en) * | 2009-09-03 | 2011-04-06 | 财团法人工业技术研究院 | Long-acting antimicrobial nanowire combination as well as antimicrobial film and spray prepared comprising same |
| WO2016185960A1 (en) * | 2015-05-15 | 2016-11-24 | 三菱電機株式会社 | Antibacterial coating film, article provided with same, method for forming antibacterial coating film, and coating liquid for forming antibacterial coating film |
| CN109550933A (en) * | 2018-12-04 | 2019-04-02 | 苏州市贝特利高分子材料股份有限公司 | A kind of superthin section silver and its chemical synthesis process |
-
1993
- 1993-10-22 JP JP5264439A patent/JPH07118114A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5935609A (en) * | 1996-04-05 | 1999-08-10 | Fountainhead Technologies | Self-regulating water purification composition |
| US6254894B1 (en) | 1996-04-05 | 2001-07-03 | Zodiac Pool Care, Inc. | Silver self-regulating water purification compositions and methods |
| WO1997047822A1 (en) * | 1996-06-14 | 1997-12-18 | Jong Chun Kim | Woven fabric mat and woven fabric mat fastener |
| JPH1017406A (en) * | 1996-07-05 | 1998-01-20 | Catalysts & Chem Ind Co Ltd | Antibacterial agent |
| JP2007131551A (en) * | 2005-11-08 | 2007-05-31 | Catalysts & Chem Ind Co Ltd | Antibacterial agent |
| JP2007238483A (en) * | 2006-03-07 | 2007-09-20 | Catalysts & Chem Ind Co Ltd | Antibacterial cosmetic |
| JP2011021014A (en) * | 2009-07-16 | 2011-02-03 | Ind Technol Res Inst | Composition having persistent antibacterial property, and antibacterial film and antibacterial spray, obtained by using the same |
| CN101999408A (en) * | 2009-09-03 | 2011-04-06 | 财团法人工业技术研究院 | Long-acting antimicrobial nanowire combination as well as antimicrobial film and spray prepared comprising same |
| WO2016185960A1 (en) * | 2015-05-15 | 2016-11-24 | 三菱電機株式会社 | Antibacterial coating film, article provided with same, method for forming antibacterial coating film, and coating liquid for forming antibacterial coating film |
| JPWO2016185960A1 (en) * | 2015-05-15 | 2017-06-08 | 三菱電機株式会社 | Antibacterial coating, article provided therewith, method for forming antibacterial coating, and coating liquid for forming antibacterial coating |
| CN109550933A (en) * | 2018-12-04 | 2019-04-02 | 苏州市贝特利高分子材料股份有限公司 | A kind of superthin section silver and its chemical synthesis process |
| CN109550933B (en) * | 2018-12-04 | 2021-06-29 | 苏州市贝特利高分子材料股份有限公司 | Ultrathin silver sheet and chemical synthesis method thereof |
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