JP2732094B2 - Antibacterial paint - Google Patents

Antibacterial paint

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Publication number
JP2732094B2
JP2732094B2 JP63286203A JP28620388A JP2732094B2 JP 2732094 B2 JP2732094 B2 JP 2732094B2 JP 63286203 A JP63286203 A JP 63286203A JP 28620388 A JP28620388 A JP 28620388A JP 2732094 B2 JP2732094 B2 JP 2732094B2
Authority
JP
Japan
Prior art keywords
oxide
powder
weight
antibacterial
paint
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.)
Expired - Lifetime
Application number
JP63286203A
Other languages
Japanese (ja)
Other versions
JPH02132166A (en
Inventor
雄三 横田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Foil Manufacturing Co Ltd
Original Assignee
Nippon Foil Manufacturing Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Foil Manufacturing Co Ltd filed Critical Nippon Foil Manufacturing Co Ltd
Priority to JP63286203A priority Critical patent/JP2732094B2/en
Publication of JPH02132166A publication Critical patent/JPH02132166A/en
Application granted granted Critical
Publication of JP2732094B2 publication Critical patent/JP2732094B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION 【産業上の利用分野】[Industrial applications]

本発明は、抗菌性に優れた塗膜を得るために用いられ
る抗菌性塗料に関するものである。
The present invention relates to an antibacterial paint used to obtain a coating film having excellent antibacterial properties.

【従来の技術及び発明が解決しようとする課題】2. Description of the Related Art

冷蔵庫等の食料品保存庫や電子レンジ等の加熱調理器
等の内壁は金属製であり、その内表面には一般的に塗膜
が設けられている。この塗膜は内壁表面に金属の錆が発
生するのを防止すると共に、内壁面に美的処理を施すた
めに設けられているものである。 しかし、食料品の菌等が塗膜に付着すると菌が繁殖
し、内壁面が不衛生になるということがあった。また、
内壁面に設けられた塗膜は単に上記の錆の発生の防止等
の役割を果たすだけであり、収納される食料品の腐敗を
積極的に防止するという役割を果たすものではなかっ
た。 そこで、本発明はある特定の物質を含有する抗菌性塗
料を用いて、塗膜を得ることにより、この特定の物質の
作用で塗膜を衛生的に保つと共に収納される食料品の腐
敗を防止しようというものである。
An inner wall of a food storage such as a refrigerator or a cooking device such as a microwave oven is made of metal, and a coating film is generally provided on an inner surface thereof. This coating film is provided to prevent rust of metal from being generated on the inner wall surface and to perform aesthetic treatment on the inner wall surface. However, when bacteria of foodstuffs adhere to the coating film, the bacteria proliferate and the inner wall surface becomes unsanitary in some cases. Also,
The coating film provided on the inner wall only plays a role of preventing the generation of rust and the like, and does not play a role of actively preventing rot of stored foodstuffs. Therefore, the present invention obtains a coating film using an antibacterial paint containing a specific substance, thereby keeping the coating film hygienic by the action of this specific substance and preventing rot of stored foodstuffs. It is to try.

【課題を解決するための手段及び作用】Means and Action for Solving the Problems

即ち、本発明は、放射性鉱物の粉末と銀鉱物粉末と無
機酸化物粉末との混合物を焼成して得られるセラミック
ス粉末を含有してなる抗菌性塗料に関するものである。 本発明において放射性鉱物としては、例えばフェルグ
ソン石,褐廉石,モナズ石等が用いられる。これらは天
然に産するものであり、例えば愛媛県波方地方,福島県
飯坂地方,長野県山口地方,京都府大呂地方,福島県阿
武隅地方,福島県石川地方,岐阜県苗木地方,福岡県小
峠地方,オーストラリア,インド,マレーシア等で産出
するものである。これらの放射性鉱物の組成は、酸化ラ
ジウム,酸化トリウム,酸化ニオビユム,酸化タンタ
ル,酸化イットリウム,酸化セリウム,珪酸,酸化鉄,
酸化アルミニウム,酸化チタニウム,酸化カルシウム,
酸化マンガン,酸化マグネシウム,酸化マンガン,酸化
エルビウム等よりなるものである。この組成中の酸化ト
リウム等から放射線が照射される。従って、放射性鉱物
としては特に酸化トリウム0.05〜2.0重量%を含有する
ものを用いるのが好ましい。酸化トリウムが2.0重量%
を超えると、照射される放射線の量が多くなり、本発明
に係る抗菌性塗料の製造現場の労働環境が悪くなる傾向
が生じる。また、酸化トリウムが0.05重量%未満である
と、照射される放射線の量が少なくなりすぎて、抗菌性
が低下する傾向となる。なお、放射性鉱物の粉末の粒径
は細かいほど好ましく、一般的には0.5μ〜3μ程度が
よい。 本発明において銀鉱物としては、例えばキギン鉱,カ
クギン鉱,シルバニア鉱,ミアジル鉱,ペッツ鉱,アン
ギン鉱,ハリギン鉱,ノルコウギン鉱,タンコウギン
鉱,ポリバス鉱等が用いられる。また、前記の鉱物より
も銀の含有量の少ないものであっても使用しうる。即
ち、銀鉱物の銀の含有量が0.005重量%以上であれば本
発明において使用しうるものである。銀と他の物とを接
触させることにより、その物に対して抗菌効果が得られ
ることは知られているが、銀鉱物中の銀の含有量が0.00
5重量%未満になると、銀の抗菌効果が低下する傾向と
なる。なお、銀鉱物粉末の粒径も細かいほど好ましく、
一般的には0.5μ〜3μ程度がよい。 セラミックス粉末を得る際に用いる無機酸化物粉末と
しては、二酸化珪素,酸化アルミニウム,酸化鉄(II
I),酸化カルシウム,酸化マグネシウム,酸化ナトリ
ウム,酸化カリウム,酸化チタン(IV),三酸化二ホウ
素等の粉末が挙げられる。また、この無機酸化物粉末と
して酸化亜鉛を用いてもよい。この無機酸化物粉末の粒
径も細かいほど好ましく、一般的には1〜10μ程度がよ
い。 そして、上記した放射性鉱物の粉末と、銀鉱物粉末
と、無機酸化物粉末とを混合し、焼成してセラミックス
粉末を得る。セラミックス粉末を得る際における、放射
性鉱物の粉末と銀鉱物粉末と無機酸化物粉末との配合割
合は、以下のとおりであるのが好ましい。即ち、無機酸
化物粉末100重量部に対して、放射性鉱物の粉末5〜100
重量部程度、銀鉱物粉末5〜100重量部程度が好まし
い。放射性鉱物の粉末等が5重量部未満になると、照射
される放射線の量が少なくなる等によって抗菌効果が低
下する傾向となる。また、放射性鉱物の粉末等の量が10
0重量部を超えると、連結剤である無機酸化物粉末の量
が相対的に低下し、セラミックス粉末が得られにくくな
る傾向が生じる。 セラミックス粉末を、従来公知の塗料に含有させて、
本発明に係る抗菌性塗料を得る。セラミックス粉末の含
有量は、抗菌性塗料中に1〜50重量%程度であるのが好
ましい。セラミックス粉末の含有量が1重量%未満であ
ると、照射される放射線の量等が少なくなる傾向が生じ
る。また、セラミックス粉末の含有量が50重量%を超え
ると、得られた塗膜の引張強度が低下する傾向となる。 本発明に係る抗菌性塗料を得るためには、従来公知の
塗料成分中に、セラミックス粉末を添加して、混合すれ
ばよい。従来公知の塗料成分は、一般的に使用されてい
る塗料を用いればよく、樹脂成分又は樹脂成分と有機溶
剤とよりなるものを使用すればよい。具体的には、ボイ
ル油,カタ練りペンイト,調合ペイント,ワニス,エナ
メル等の油性塗料、ラッカー、揮発性ワニス、水性塗
料、尿素樹脂塗料、メラミン樹脂塗料、フェノール樹脂
塗料、アルキッド樹脂塗料、ポリエステル樹脂塗料、ビ
ニル樹脂塗料、エポキシ樹脂塗料、エトキシシラン等の
無機系エトキシ塗料等を用いることができる。 このようにして得られた抗菌性塗料を冷蔵庫等の内壁
面に塗布し、乾燥することにより、抗菌性に優れた塗膜
を得ることができる。本発明に係る抗菌性塗料は上記の
内壁面以外に所望に応じて種々の表面に塗布して用いる
ことができる。
That is, the present invention relates to an antibacterial paint containing a ceramic powder obtained by firing a mixture of a radioactive mineral powder, a silver mineral powder, and an inorganic oxide powder. In the present invention, as the radioactive mineral, for example, fergusonite, brown stone, monazite and the like are used. These are naturally occurring, such as the Namigata region of Ehime prefecture, the Iizaka region of Fukushima prefecture, the Yamaguchi region of Nagano prefecture, the Oro region of Kyoto prefecture, the Abu sumi region of Fukushima prefecture, the Ishikawa region of Fukushima prefecture, the Naegi region of Gifu prefecture, and Fukuoka. It is produced in the Kotoge region of the prefecture, Australia, India, and Malaysia. The composition of these radioactive minerals is radium oxide, thorium oxide, niobium oxide, tantalum oxide, yttrium oxide, cerium oxide, silicic acid, iron oxide,
Aluminum oxide, titanium oxide, calcium oxide,
It is composed of manganese oxide, magnesium oxide, manganese oxide, erbium oxide and the like. Radiation is irradiated from thorium oxide or the like in this composition. Therefore, it is particularly preferable to use a radioactive mineral containing 0.05 to 2.0% by weight of thorium oxide. 2.0% by weight of thorium oxide
When the ratio exceeds, the amount of radiation to be irradiated increases, and the working environment of the manufacturing site of the antibacterial paint according to the present invention tends to deteriorate. On the other hand, when the content of thorium oxide is less than 0.05% by weight, the amount of radiation to be irradiated becomes too small, and the antibacterial property tends to decrease. The finer the particle size of the radioactive mineral powder, the better. Generally, it is preferably about 0.5 to 3 μm. In the present invention, as the silver mineral, for example, kiggin ore, kacgin ore, sylvanianite, miazilite, pez ore, anguine ore, haligin ore, norkoguin ore, tankougin ore, and polybas ore are used. Further, even those having a lower silver content than the above minerals can be used. That is, if the silver content of the silver mineral is 0.005% by weight or more, it can be used in the present invention. It is known that an antibacterial effect can be obtained by bringing silver into contact with another substance, but the content of silver in the silver mineral is 0.00.
If it is less than 5% by weight, the antibacterial effect of silver tends to decrease. The finer the particle size of the silver mineral powder, the better,
Generally, it is preferably about 0.5 μm to 3 μm. Inorganic oxide powders used for obtaining ceramic powders include silicon dioxide, aluminum oxide, iron oxide (II
I), powders of calcium oxide, magnesium oxide, sodium oxide, potassium oxide, titanium (IV) oxide, diboron trioxide and the like. Further, zinc oxide may be used as the inorganic oxide powder. The finer the particle size of the inorganic oxide powder is, the more preferable it is. Then, the above-mentioned radioactive mineral powder, silver mineral powder, and inorganic oxide powder are mixed and fired to obtain a ceramic powder. In obtaining the ceramic powder, the mixing ratio of the radioactive mineral powder, the silver mineral powder, and the inorganic oxide powder is preferably as follows. That is, based on 100 parts by weight of the inorganic oxide powder, 5 to 100 powders of radioactive mineral
About 5 parts by weight of silver mineral powder is preferred. When the amount of the radioactive mineral powder or the like is less than 5 parts by weight, the antibacterial effect tends to decrease due to a decrease in the amount of irradiated radiation. In addition, the amount of radioactive mineral powder
If the amount exceeds 0 parts by weight, the amount of the inorganic oxide powder as the linking agent is relatively reduced, and the ceramic powder tends to be difficult to obtain. Ceramic powder, by including a conventionally known paint,
An antibacterial paint according to the present invention is obtained. The content of the ceramic powder is preferably about 1 to 50% by weight in the antibacterial paint. When the content of the ceramic powder is less than 1% by weight, the amount of the irradiated radiation tends to be reduced. On the other hand, when the content of the ceramic powder exceeds 50% by weight, the tensile strength of the obtained coating film tends to decrease. In order to obtain the antibacterial paint according to the present invention, a ceramic powder may be added to a conventionally known paint component and mixed. As a conventionally known coating component, a commonly used coating may be used, and a resin component or a resin component and an organic solvent may be used. More specifically, oil paints such as boil oil, catalyzer penite, blend paint, varnish, enamel, lacquer, volatile varnish, water-based paint, urea resin paint, melamine resin paint, phenol resin paint, alkyd resin paint, polyester resin Paints, vinyl resin paints, epoxy resin paints, and inorganic ethoxy paints such as ethoxysilane can be used. The thus obtained antibacterial paint is applied to the inner wall surface of a refrigerator or the like and dried to obtain a coating film having excellent antibacterial properties. The antibacterial paint according to the present invention can be used by applying it to various surfaces other than the inner wall surfaces as desired.

【実施例】【Example】

実施例1 まず、下記の組成及び配合からなる組成物を準備し
た。 無機酸化物(粒径2μ) 100重量部 褐廉石(粒径5μ) 40重量部 ハリギン鉱(粒径5μ) 20重量部 なお、前記の無機酸化物は二酸化珪素(シリカ)及び
酸化アルミニウム(アルミナ)を主体とするものであ
る。 この組成物を約1000℃で2日間焼成して、セラミック
スを得、これを粉砕して粒径2μのセラミックス粉末を
得た。 このセラミックス粉末を用いて、下記の組成及び配合
よりなる抗菌性塗料を得た。 常温硬化型尿素樹脂塗料 100重量部 セラミックス粉末(粒径2μ) 50重量部 この抗菌性塗料を鉄板の表面に塗布し常温で放置し
て、鉄板表面に抗菌性の塗膜を得た。 この鉄板の塗膜表面にマグロの切身を置き、それを常
温で放置した。3時間経過後において切身には殆ど変化
が見られなかった。 比較のため、常温硬化型尿素樹脂塗料のみで鉄板表面
に塗膜を設け、その塗膜面にマグロの切身を置き、常温
で放置した。3時間経過後において切身はほぼ全体に亙
って変色していた。 実施例2 まず、下記の組成及び配合からなる組成物を準備し
た。 無機酸化物(粒径2μ) 100重量部 褐廉石(粒径5μ) 40重量部 ハリギン鉱(粒径5μ) 20重量部 なお、前記の無機酸化物は二酸化珪素(シリカ),酸
化アルミニウム(アルミナ)及び酸化亜鉛(亜鉛華)を
終端とするものである。 この組成物を約1000℃で2日間焼成して、セラミック
スを得、これを粉砕して粒径2μのセラミックス粉末を
得た。 このセラミックス粉末を用いて下記の組成及び配合よ
りなる抗菌性塗料を得た。 常温硬化型尿素樹脂塗料 100重量部 セラミックス粉末(粒径2μ) 50重量部 この抗菌性塗料を鉄板の表面に塗布し常温で放置し
て、鉄板表面に抗菌性の塗膜を得た。 これを用いて実施例1と同様の試験をしたところ、抗
菌効果を奏することが判った。
Example 1 First, a composition having the following composition and composition was prepared. Inorganic oxide (particle size 2μ) 100 parts by weight Brown stone (particle size 5μ) 40 parts by weight Haliginite (particle size 5μ) 20 parts by weight The above-mentioned inorganic oxide is composed of silicon dioxide (silica) and aluminum oxide (alumina). ). This composition was baked at about 1000 ° C. for 2 days to obtain a ceramic, which was pulverized to obtain a ceramic powder having a particle size of 2 μm. Using the ceramic powder, an antibacterial paint having the following composition and composition was obtained. Room temperature curable urea resin paint 100 parts by weight Ceramic powder (particle size 2μ) 50 parts by weight This antibacterial paint was applied to the surface of an iron plate and left at room temperature to obtain an antibacterial coating film on the iron plate surface. Tuna cuts were placed on the surface of the coating film of the iron plate and left at room temperature. After three hours, the fillets showed little change. For comparison, a coating film was provided on the surface of an iron plate using only a room temperature-curable urea resin paint, and a tuna cut was placed on the coating film surface and allowed to stand at room temperature. After 3 hours, the fillet had discolored almost entirely. Example 2 First, a composition having the following composition and composition was prepared. Inorganic oxide (particle size 2μ) 100 parts by weight Brown stone (particle size 5μ) 40 parts by weight Haliginite (particle size 5μ) 20 parts by weight The above inorganic oxides are silicon dioxide (silica), aluminum oxide (alumina) ) And zinc oxide (zinc white). This composition was baked at about 1000 ° C. for 2 days to obtain a ceramic, which was pulverized to obtain a ceramic powder having a particle size of 2 μm. Using this ceramic powder, an antibacterial paint having the following composition and composition was obtained. Room temperature curable urea resin paint 100 parts by weight Ceramic powder (particle size 2μ) 50 parts by weight This antibacterial paint was applied to the surface of an iron plate and left at room temperature to obtain an antibacterial coating film on the iron plate surface. When the same test as in Example 1 was performed using this, it was found that an antibacterial effect was exhibited.

【発明の効果】【The invention's effect】

以上説明したように、本発明に係る抗菌性塗料は、そ
の中に、放射性鉱物の粉末と銀鉱物粉末と無機酸化物粉
末との混合物から得られるセラミックス粉末を含有して
いるので、得られた塗膜中の放射性鉱物より放射線が照
射されたり又は銀鉱物等が外気と接触する。従って、こ
の塗膜が設けられた金属板等を、例えば冷蔵庫等の食料
品保存庫の内壁面として使用すると、収納されている食
料品に放射線が照射されたり又は食料品と銀鉱物等とが
接触する。依って、食料品中の菌の生長が抑制され又は
菌が殺滅されるので、食料品の腐敗を防止しうるという
効果を奏する。 また、本発明に係る抗菌性塗料より得られる塗膜は、
そこに菌が付着しても、菌の生長を抑制し又は菌を殺滅
する。従って、この塗膜を設けた金属板等を冷蔵庫等の
内壁面として使用した場合にも、内壁面にカビ等が発生
するのを防止でき、冷蔵庫等の内面を衛生的に保つこと
ができるという効果を奏する。
As described above, the antibacterial paint according to the present invention was obtained because it contains a ceramic powder obtained from a mixture of a radioactive mineral powder, a silver mineral powder, and an inorganic oxide powder. Radiation is irradiated from radioactive minerals in the coating film, or silver minerals or the like come into contact with the outside air. Therefore, when a metal plate or the like provided with this coating film is used as an inner wall surface of a food storage such as a refrigerator, for example, the stored food is irradiated with radiation or the food and the silver mineral are mixed. Contact. Therefore, the growth of the bacteria in the food is suppressed or the bacteria are killed, so that it is possible to prevent the spoilage of the food. Further, the coating film obtained from the antibacterial paint according to the present invention,
Even if the bacteria adhere there, the growth of the bacteria is suppressed or the bacteria are killed. Therefore, even when a metal plate or the like provided with this coating film is used as an inner wall surface of a refrigerator or the like, it is possible to prevent mold or the like from being generated on the inner wall surface, and to keep the inner surface of the refrigerator or the like sanitary. It works.

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】放射性鉱物の粉末と銀鉱物粉末と無機酸化
物粉末との混合物を焼成して得られるセラミックス粉末
を含有してなる抗菌性塗料。
An antibacterial paint containing a ceramic powder obtained by firing a mixture of a radioactive mineral powder, a silver mineral powder and an inorganic oxide powder.
【請求項2】放射性鉱物として、酸化ナトリウム0.05〜
2.0重量%含有するものを用いる請求項(1)記載の抗
菌性塗料。
2. As a radioactive mineral, sodium oxide 0.05-
The antibacterial paint according to claim 1, wherein the paint contains 2.0% by weight.
JP63286203A 1988-11-12 1988-11-12 Antibacterial paint Expired - Lifetime JP2732094B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63286203A JP2732094B2 (en) 1988-11-12 1988-11-12 Antibacterial paint

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63286203A JP2732094B2 (en) 1988-11-12 1988-11-12 Antibacterial paint

Publications (2)

Publication Number Publication Date
JPH02132166A JPH02132166A (en) 1990-05-21
JP2732094B2 true JP2732094B2 (en) 1998-03-25

Family

ID=17701298

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63286203A Expired - Lifetime JP2732094B2 (en) 1988-11-12 1988-11-12 Antibacterial paint

Country Status (1)

Country Link
JP (1) JP2732094B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3108522B2 (en) * 1992-05-08 2000-11-13 松下電器産業株式会社 Antibacterial composite

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52136231A (en) * 1976-05-12 1977-11-14 Jirou Asahina Paint enforced by ionizing radiation
JPS60202162A (en) * 1984-03-28 1985-10-12 Kanebo Ltd Antiseptic and mildewproofing paint composition

Also Published As

Publication number Publication date
JPH02132166A (en) 1990-05-21

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