JP2000143369A - Surface-treating agent and antimicrobial pottery product and its production - Google Patents
Surface-treating agent and antimicrobial pottery product and its productionInfo
- Publication number
- JP2000143369A JP2000143369A JP31435398A JP31435398A JP2000143369A JP 2000143369 A JP2000143369 A JP 2000143369A JP 31435398 A JP31435398 A JP 31435398A JP 31435398 A JP31435398 A JP 31435398A JP 2000143369 A JP2000143369 A JP 2000143369A
- Authority
- JP
- Japan
- Prior art keywords
- silver
- antibacterial
- molybdate
- glaze
- silver molybdate
- 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.)
- Withdrawn
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/5007—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials with salts or salty compositions, e.g. for salt glazing
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/0004—Compounds chosen for the nature of their cations
- C04B2103/0015—Noble metal or copper compounds
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2092—Resistance against biological degradation
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、主としてタイル，
衛生陶器をはじめとする鋳込み製品，和洋食器をはじめ
とする陶磁器製品などの各種窯業製品に、抗菌性を付与
するための技術に関し、詳しくは、抗菌性を付与する手
段としてモリブデン酸銀を用いることを特徴とするもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly relates to tiles,
Regarding the technology for imparting antibacterial properties to various ceramic products such as sanitary ware and other cast products, Japanese and Western tableware and other porcelain products, use silver molybdate as a means to impart antibacterial properties. It is characterized by.
【０００２】[0002]
【従来の技術】抗菌性物質として公知のものに、銀，
銅，亜鉛等の抗菌性金属をセラミックスに担持させたも
のや、銀をゼオライトに担持させたものがある。これら
抗菌性物質は、繊維や合成樹脂等に分散・吸着させ又は
コーティングすることにより広範囲に利用されており、
人体に対する安全性も高いことが知られている。2. Description of the Related Art Known antibacterial substances include silver,
There are ones in which antibacterial metals such as copper and zinc are supported on ceramics, and those in which silver is supported on zeolite. These antibacterial substances are widely used by being dispersed / adsorbed or coated on fibers, synthetic resins, etc.
It is known that safety to the human body is high.
【０００３】例えば特開平６−３４０５１３号公報に
は、釉薬に、金属銀・ハロゲン化銀・酸化銀・水酸化銀
・無機酸の銀塩・有機酸の銀塩のうちから選ばれる銀含
有物質を、金属銀換算で０．０１〜１０wt％混合して成
る抗菌性釉薬組成物に関する技術が開示されている。こ
れを用いて施釉，焼成することにより、製品に抗菌性を
付与することができるとされている。For example, Japanese Patent Application Laid-Open No. 6-340513 discloses that a glaze contains a silver-containing substance selected from metallic silver, silver halide, silver oxide, silver hydroxide, a silver salt of an inorganic acid, and a silver salt of an organic acid. Is disclosed in the art with respect to an antibacterial glaze composition comprising 0.01 to 10% by weight in terms of metallic silver. It is said that antibacterial properties can be imparted to products by glazing and firing using them.
【０００４】[0004]
【発明が解決しようとする課題】一般に、銀等の抗菌性
金属を用いた抗菌性物質による抗菌性能は、タイルや衛
生陶器等の製品表面又は表面近傍に存在する抗菌性物質
によってもたらされるものであり、表面から離れた位置
つまり釉薬内部や製品素地部分に存在する抗菌性物質
は、抗菌性能にほとんど寄与しない。しかるに前記特開
平６−３４０５１３号公報に記載の技術によれば、釉薬
に混合した銀含有物質が、釉薬内部や素地中へ浸透する
ため、釉薬表面又は表面近傍に存在して抗菌性能に寄与
する銀含有物質の割合が配合量に比して非常に少なくな
っている。それ故、銀含有物質の使用量に比べると非常
に弱い抗菌力しか得られていない。そこで、強い抗菌力
を得ようとするには使用量を増やさねばならないが、銀
含有物質は一般に高価であるから、この場合はコスト高
を招くという欠点をもたらす。Generally, the antibacterial performance of an antibacterial substance using an antibacterial metal such as silver is provided by an antibacterial substance existing on or near a product surface such as a tile or sanitary ware. Yes, antibacterial substances present at a position distant from the surface, that is, inside the glaze or on the base material of the product, hardly contribute to antibacterial performance. However, according to the technique described in JP-A-6-340513, the silver-containing substance mixed with the glaze penetrates into the glaze or into the base material, and therefore exists on or near the glaze surface and contributes to antibacterial performance. The ratio of the silver-containing substance is very small as compared with the blending amount. Therefore, only a very weak antibacterial activity is obtained as compared with the amount of the silver-containing substance used. Therefore, in order to obtain a strong antibacterial activity, the amount used must be increased. However, since the silver-containing substance is generally expensive, in this case, there is a disadvantage that the cost is increased.
【０００５】[0005]
【課題を解決するための手段】本発明は、銀を抗菌剤と
して用いて窯業製品に抗菌性能を付与する場合におい
て、少ない使用量で優れた抗菌効果を得ることの可能な
手段を提供するものである。SUMMARY OF THE INVENTION The present invention provides a means for obtaining an excellent antibacterial effect with a small amount of use in imparting antibacterial performance to ceramic products using silver as an antibacterial agent. It is.
【０００６】本発明が、かかる目的のために採用する表
面処理材の特徴とするところは、抗菌剤としてモリブデ
ン酸銀を配合した懸濁液から成ることにある。この場合
におとして、酸化チタンを、モリブデン酸銀に対して１
０〜５０％添加することも可能である。さらに前記懸濁
液は、釉薬とすることが考えられる。The feature of the surface treatment material employed for this purpose in the present invention is that the surface treatment material comprises a suspension containing silver molybdate as an antibacterial agent. In this case, titanium oxide may be added to silver molybdate in one amount.
It is also possible to add 0 to 50%. Further, the suspension may be a glaze.
【０００７】本発明が提供する抗菌性窯業製品の製造方
法の特徴とするところは、懸濁液にモリブデン酸銀を配
合し、さらに所望により酸化チタンを添加して成る表面
処理材を、製品素地の表面に直接塗布したのち、又は、
製品素地の表面に施釉したさらにその上へ塗布したの
ち、焼成することにある。A feature of the method for producing an antibacterial ceramic product provided by the present invention is that a surface treatment material comprising silver molybdate mixed with a suspension and, if desired, titanium oxide is added to the product base. After applying directly to the surface of
After glazing on the surface of the product base and applying it on it, it is to be baked.
【０００８】そして、このようにして得られる本発明に
係る抗菌性窯業製品の特徴とするところは、モリブデン
酸銀、又は、モリブデン酸銀と酸化チタンとを、表面層
に存在させたことにある。この場合、表面層は釉薬層と
することができる。A feature of the antibacterial ceramic product according to the present invention thus obtained is that silver molybdate or silver molybdate and titanium oxide are present in the surface layer. . In this case, the surface layer can be a glaze layer.
【０００９】モリブデン酸銀が高い抗菌効果を発揮する
ことは従来知られていなかった。本発明者らは、モリブ
デン酸銀を窯業製品の表面処理材に配合することにより
優れた抗菌性能が得られ、しかも製品の表面性状に何ら
悪影響を及ぼさないという知見を得て、本発明を完成し
たものである。モリブデン酸銀は高いイオン伝導性を示
すことから、この高いイオン伝導性によって表面層中の
銀イオンが活性化し、その結果、抗菌剤として従来使用
されている金属銀や酸化銀・ハロゲン化銀等の銀化合物
と比べて、非常に高い抗菌性能を発揮するものと考えら
れる。It has not been known that silver molybdate exhibits a high antibacterial effect. The present inventors have obtained the knowledge that excellent antibacterial performance can be obtained by adding silver molybdate to the surface treatment material of ceramic products, and that they have no adverse effect on the surface properties of the product, and completed the present invention. It was done. Since silver molybdate has high ionic conductivity, silver ions in the surface layer are activated by this high ionic conductivity, and as a result, metallic silver, silver oxide, silver halide, etc. which have been conventionally used as antibacterial agents It is considered that the compound exhibits extremely high antibacterial performance as compared with the silver compound.
【００１０】さらに本発明者らは、製品の表面層中に、
モリブデン酸銀と共に酸化チタンを存在させると、抗菌
性能がより向上することを見いだした。酸化チタンのモ
リブデン酸銀に対する機能は現在のところ判然としない
が、酸化チタンは、何らかの作用により、モリブデン酸
銀粒子が表面層の内部すなわち素地側へ沈降するのを阻
止し、その結果、抗菌性を有する銀粒子を表面層の表面
又は表面近傍に集中させるため、抗菌性能が向上するも
のと推測される。そこで、本発明では、酸化チタンを、
モリブデン酸銀に対し１０〜５０％、より好ましくは２
０〜３０％の割合で配合するものとした。酸化チタンの
配合割合が１０％未満であると、抗菌性能の向上に寄与
しないおそれがある。反対に配合割合が５０％を越える
と、白濁やピンホール等の釉の欠点を生じさせるおそれ
がある。[0010] Further, the present inventors have found that in the surface layer of the product,
It has been found that the presence of titanium oxide together with silver molybdate further improves the antibacterial performance. Although the function of titanium oxide for silver molybdate is unknown at present, titanium oxide, by some action, prevents the silver molybdate particles from settling inside the surface layer, that is, the substrate side, and as a result, has an antibacterial property. It is presumed that the antibacterial performance is improved because silver particles having the following are concentrated on or near the surface of the surface layer. Therefore, in the present invention, titanium oxide is
10 to 50%, more preferably 2 to 50% of silver molybdate
It was blended at a ratio of 0 to 30%. If the blending ratio of titanium oxide is less than 10%, it may not contribute to the improvement of antibacterial performance. Conversely, if the compounding ratio exceeds 50%, defects in glaze such as cloudiness and pinholes may be caused.
【００１１】[0011]
【発明の実施の形態】本発明の表面処理材に配合するモ
リブデン酸銀は、銀水溶液とモリブデン水溶液とを撹拌
反応させ、濾過，洗浄，乾燥，粉砕等の諸工程を経て形
成される。このモリブデン酸銀を、釉薬その他の懸濁液
に分散させることにより、本発明に係る表面処理材が得
られる。モリブデン酸銀の配合割合は金属銀換算で外割
りにして０．００１〜１％の範囲とすることが望まし
い。配合量が０．００１％未満であると抗菌性能を発揮
できなくなるおそれがあり、反対に１％を越えると、設
備の金属腐食や黄変等の問題を生じさせるおそれがあ
る。配合するモリブデン酸銀の粒径は２０μｍ以下とす
るのが望ましく、より好ましくは５〜１０μｍの範囲と
する。粒径を小さくすることにより、焼成時にモリブデ
ン酸銀粒子が表面から素地側へ拡散沈降するのを阻止す
ることができる。また、上記表面処理材は、釉薬等の懸
濁液にモリブデン酸銀を混合したものであるから、表面
処理材自体が抗菌作用を有する。BEST MODE FOR CARRYING OUT THE INVENTION Silver molybdate to be incorporated in the surface treatment material of the present invention is formed through various processes such as filtration, washing, drying, and pulverization by agitating a silver aqueous solution and a molybdenum aqueous solution. By dispersing the silver molybdate in a glaze or other suspension, the surface treatment material according to the present invention is obtained. It is desirable that the compounding ratio of silver molybdate is in the range of 0.001 to 1% when calculated in terms of metal silver. If the amount is less than 0.001%, the antibacterial performance may not be exhibited. If the amount exceeds 1%, problems such as metal corrosion and yellowing of the equipment may occur. The particle size of the silver molybdate to be blended is desirably 20 μm or less, more preferably 5 to 10 μm. By reducing the particle size, it is possible to prevent the silver molybdate particles from diffusing and settling from the surface toward the substrate during firing. Further, since the surface treatment material is a mixture of silver molybdate and a suspension of glaze or the like, the surface treatment material itself has an antibacterial effect.
【００１２】なお所望により、モリブデン酸銀に対し、
酸化チタンを１０〜５０％（好ましくは２０〜３０％）
の割合で酸化チタンを添加することにより、抗菌性能を
より一層向上させることができる。If desired, silver molybdate may be
10 to 50% of titanium oxide (preferably 20 to 30%)
By adding titanium oxide at a ratio of 2, the antibacterial performance can be further improved.
【００１３】前記表面処理材を用いて本発明に係る窯業
製品を製造する要領は次の如くである。表面処理材が釉
薬の場合は、例えばタイル，衛生陶器，陶磁器等の窯業
製品の素地の表面に、まず通常の釉薬を塗布し、続いて
この釉薬層上に、モリブデン酸銀を配合した釉薬を塗布
して釉薬層を二層構造としたのち、これを焼成する。あ
るいは、製品素地の表面に、直接、モリブデン酸銀を配
合した釉薬を塗布して焼成することも可能である。The procedure for manufacturing the ceramic product according to the present invention using the above surface treatment material is as follows. If the surface treatment material is a glaze, for example, first apply a normal glaze to the surface of a ceramic product such as a tile, sanitary ware, or porcelain, and then apply a glaze containing silver molybdate on this glaze layer. After coating, the glaze layer has a two-layer structure, which is then fired. Alternatively, it is also possible to apply a glaze containing silver molybdate directly to the surface of the product base and fire it.
【００１４】モリブデン酸銀配合釉薬の塗布方法として
は、スプレー塗布，ミスト掛け，刷毛塗り等が可能であ
る。スプレー塗布，ミスト掛けを採用したときは、釉薬
の塗りむらが防止され、完成した製品にまだら模様を生
じさせないので、意匠的効果が大きい。As a method for applying the glaze containing silver molybdate, spray application, mist application, brush application and the like are possible. When the spray coating and the mist application are adopted, the glaze is prevented from being unevenly applied, and the finished product does not have a mottled pattern, so that the design effect is large.
【００１５】なお表面処理材が釉薬の場合は、これを製
品の全表面に塗布するのではなく、効果的な部位にのみ
塗布することも可能である。例えば、便器や洗面器等の
衛生陶器であれば、水に濡れるボール部や、人体に接触
する上面部のみにモリブデン酸銀配合釉薬を塗布し、底
面部等へは塗布を省略することも妨げない。さらに、例
えば小便器の目皿に対しては、掃除がしにくく、それ
故、黴の発生や雑菌の繁殖を招きやすい裏面部分にの
み、上記モリブデン酸銀配合釉薬を塗布することが考え
られる。When the surface treatment material is a glaze, it may be applied not only to the entire surface of the product but only to an effective portion. For example, in the case of sanitary ware such as a toilet bowl or a wash basin, it is difficult to apply the silver molybdate-containing glaze only to the ball portion that is wetted by water or the top portion that comes into contact with the human body, and to omit the application to the bottom portion and the like. Absent. Further, for example, it is conceivable to apply the above-mentioned silver molybdate-containing glaze only to the back surface portion, which is difficult to clean, for example, on the urinal plate, and is liable to cause mold and germs.
【００１６】[0016]
【実施例】本発明の実施例として、表面処理材をモリブ
デン酸銀を配合した釉薬とし、これを用いて抗菌性タイ
ルを製造する場合を説明する。表面処理材である釉薬の
原料は通常用いられる陶磁器用釉薬原料とすることがで
きる。具体的な調合割合を例示すれば、長石３６．８
％，石灰１３．５％，粘土９．６％，珪砂４０．１％で
ある。EXAMPLE As an example of the present invention, a case where a surface treatment material is a glaze containing silver molybdate and the antibacterial tile is manufactured using the glaze will be described. The raw material for the glaze as a surface treatment material can be a commonly used raw material for a glaze for ceramics. An example of a specific mixing ratio is 36.8 feldspar.
%, Lime 13.5%, clay 9.6%, silica sand 40.1%.
【００１７】準備された前記釉薬原料にモリブデン酸銀
を配合する。配合するモリブデン酸銀は、平均粒径が
３．２〜４．０μｍ、最小・最大粒径の範囲が１〜８μ
ｍ（マイクロトラック粒度分析計を用いたレーザー回折
法による）とし、配合量は金属銀換算で外割りにして
０．００１〜０．１％の範囲である。また所望により酸
化チタンを、モリブデン酸銀の１０〜５０％添加しても
よい。Silver molybdate is mixed with the prepared glaze raw material. Silver molybdate to be blended has an average particle size of 3.2 to 4.0 μm, and a range of minimum and maximum particle sizes of 1 to 8 μm.
m (by a laser diffraction method using a Microtrac particle size analyzer), and the compounding amount is in the range of 0.001 to 0.1% in terms of metal silver. If desired, titanium oxide may be added in an amount of 10 to 50% of silver molybdate.
【００１８】こうして調整したモリブデン酸銀配合釉薬
を、タイル素地に塗布し、焼成することにより、目的と
する抗菌性タイルを得ることができる。The desired antibacterial tile can be obtained by applying the thus-prepared glaze containing silver molybdate to a tile base and firing it.
【００１９】〔抗菌性試験の実施例〕本発明に基づき
製造した抗菌性タイルの抗菌性能を、以下の要領で試験
し確認した。供試体には、１００ｍｍ角のタイル用成形
素地から５０ｍｍ（±２ｍｍ）角の成形素地を切り出し
て試験片とし、前記陶磁器用釉薬原料にモリブデン酸銀
を金属銀換算で０．０２／０．０１／０．００５％配合
した釉薬を、各試験片の表面に表面処理材として塗布
し、焼成したものを用いる。また比較例として、モリブ
デン酸銀に代えてリン酸銀系抗菌剤を、金属銀換算で
０．０２／０．０１／０．００５％配合した釉薬を上記
試験片に塗布し焼成したもの、及び、対照例として、抗
菌剤無添加の釉薬を上記試験片に塗布し焼成したものを
用いる。[Example of antibacterial test] The antibacterial performance of the antibacterial tile manufactured according to the present invention was tested and confirmed in the following manner. A 50 mm (± 2 mm) square forming body was cut out from a 100 mm square forming body for a tile to prepare a test piece, and silver molybdate was used as a raw material for the glaze for ceramics at a ratio of 0.02 / 0.01 in terms of metallic silver. A glaze blended with 0.005% is applied to the surface of each test piece as a surface treatment material and fired. As a comparative example, a glaze in which a silver phosphate-based antibacterial agent was replaced by silver phosphate in an amount of 0.02 / 0.01 / 0.005% in terms of metallic silver was applied to the test piece and baked, and As a control, a glaze without an antimicrobial agent was applied to the test piece and baked.
【００２０】抗菌性能の評価方法は次のとおりである。
前記の如く準備した各試験片を滅菌シャーレに入れ、各
試験片の試験面（施釉面）に、接種用菌液０．５ｍｌ
（菌数１．０〜５．０×１０5 個）を接種したのち、そ
の上に被覆フィルム（例えば、オルガノ製ストマッカー
４００型ポリ袋を４５ｍｍ角に無菌的に切断した形成し
たフィルムなど）を被せて蓋をし、温度３５°Ｃ（±１
°Ｃ），相対湿度９０％以上の条件下で、６時間培養す
る。培養後、被覆フィルムをＳＣＤＬＰ培地１０ｍｌで
洗浄し、当該フィルムに付着している菌を滅菌シャーレ
中に洗い出す。そして、この洗い出し液１ｍｌ中の生菌
数を、ＳＡ培地を使用した寒天平板培養法（３５°Ｃ±
１°Ｃで４０〜４８時間培養）により測定する。測定結
果を表１に示す。The method for evaluating the antibacterial performance is as follows.
Each test piece prepared as described above was placed in a sterile petri dish, and the test surface (glazed surface) of each test piece was 0.5 ml of the inoculum bacterial solution.
(1.0 to 5.0 × 10 5 cells), and then coated thereon with a coating film (eg, a film formed by aseptically cutting an organo Stomacker 400 plastic bag into 45 mm square). Cover and cover, temperature 35 ° C (± 1
(C), cultivation for 6 hours under the condition of relative humidity of 90% or more. After the culture, the coated film is washed with 10 ml of SCDLP medium, and the bacteria adhering to the film are washed out in a sterile petri dish. Then, the viable cell count in 1 ml of the washing solution was determined by the agar plate culture method (35 ° C. ±
(Cultured at 1 ° C for 40 to 48 hours). Table 1 shows the measurement results.
【００２１】[0021]
【表１】 [Table 1]
【００２２】表１に示される数値に基づき、時間経過に
よる生菌数の減少を片対数グラフで表したものが図１及
び図２であり、図１は、本発明に係るモリブデン酸銀配
合釉薬によるもの、図２は比較例のリン酸銀配合釉薬に
よるものである。なお、比較を容易にするため、いずれ
も初期菌数の値を１．０×１０6 に換算している。FIGS. 1 and 2 show semi-logarithmic graphs showing the decrease in the number of viable bacteria over time based on the numerical values shown in Table 1, and FIG. 1 shows the glaze containing silver molybdate according to the present invention. 2 is based on the silver phosphate-containing glaze of the comparative example. In addition, in order to facilitate comparison, the value of the initial bacterial count was converted to 1.0 × 10 6 .
【００２３】表１及び図１，図２から分かるように、本
発明に係るモリブデン酸銀配合釉薬を塗布した抗菌性タ
イルは、リン酸銀系抗菌剤を用いた比較例と比べて、抗
菌性能が向上している。このことから、本発明に係るモ
リブデン酸銀は、従来の抗菌剤よりも強い抗菌力を持
ち、その結果、少ない配合量でも、高い抗菌効果を発揮
させることが可能であると考えられる。As can be seen from Table 1 and FIGS. 1 and 2, the antibacterial tile coated with the silver molybdate-containing glaze according to the present invention has a higher antibacterial performance than the comparative example using the silver phosphate antibacterial agent. Is improving. From this, it is considered that the silver molybdate according to the present invention has stronger antibacterial activity than the conventional antibacterial agent, and as a result, it is possible to exhibit a high antibacterial effect even with a small amount of compounding.
【００２４】〔抗菌性試験の実施例〕次に、モリブデ
ン酸銀と共に酸化チタンを釉薬に配合した場合の抗菌性
能を、試験により確認した。試験要領は、前記抗菌性試
験１とほぼ同じである。供試体には、１００ｍｍ角のタ
イル用成形素地から５０ｍｍ（±２ｍｍ）角の成形素地
を切り出して試験片とし、前記陶磁器用釉薬原料にモリ
ブデン酸銀を金属銀換算で０．００５％配合し、さらに
酸化チタンをモリブデン酸銀に対し、０／１０／２０／
３０％それぞれ添加して調整した釉薬を表面処理材とし
て各試験片の表面に塗布し、焼成したものを用いた。抗
菌性能の評価方法は、前記抗菌性試験１と同一の方法に
よる。試験結果を表２に示す。また、表２の数値に基づ
いて作成したグラフを図３に示す。[Example of antibacterial test] Next, the antibacterial performance when titanium oxide was added to the glaze together with silver molybdate was confirmed by a test. The test procedure is almost the same as the antibacterial test 1. A 50 mm (± 2 mm) square forming body was cut out from a 100 mm square forming body for a tile to form a test piece. The glaze material for ceramics was mixed with 0.005% of silver molybdate in terms of silver metal, Further, titanium oxide was added to silver molybdate in 0/10/20 /
A glaze adjusted by adding 30% each was applied to the surface of each test piece as a surface treatment material and fired. The evaluation method of the antibacterial performance is the same method as in the antibacterial test 1. Table 2 shows the test results. FIG. 3 shows a graph created based on the numerical values in Table 2.
【００２５】[0025]
【表２】 [Table 2]
【００２６】表２及び図３から明らかなとおり、モリブ
デン酸菌を配合した釉薬に、酸化チタンを添加すると、
抗菌力を増大させることができる。従って、酸化チタン
を適量使用することにより、高価なモリブデン酸銀の使
用量を節約しても、所要の抗菌性能を製品に付与するこ
とが可能である。As apparent from Table 2 and FIG. 3, when titanium oxide is added to the glaze containing molybdic acid bacteria,
Antibacterial activity can be increased. Therefore, by using an appropriate amount of titanium oxide, it is possible to impart the required antibacterial performance to the product even if the amount of expensive silver molybdate is saved.
【００２７】[0027]
【発明の効果】本発明に係る表面処理材は、釉薬等に抗
菌性を持つモリブデン酸銀を配合したものであるから、
表面処理材自体が抗菌作用を発揮する。従って、本発明
に係る表面処理材を用いて製造したタイル，衛生陶器，
陶磁器等の抗菌性窯業製品は、表面の釉薬等によって所
望する色調・模様が得られると同時に、半永久的に抗菌
作用を保持して、黴や雑菌の繁殖を抑える。The surface treatment material according to the present invention is obtained by blending antibacterial silver molybdate into a glaze or the like.
The surface treatment material itself exerts an antibacterial effect. Therefore, tiles, sanitary ware,
Antibacterial ceramic products such as ceramics can obtain a desired color tone and pattern by glaze or the like on the surface, and at the same time, retain the antibacterial action semipermanently and suppress the propagation of mold and various germs.
【００２８】本発明に係る表面処理材に配合するモリブ
デン酸銀は、例えばリン酸銀系抗菌剤等の従来の抗菌剤
に比べて、はるかに高い抗菌性能を示すので、従来と同
等の抗菌効果を得るのに必要な銀の使用量を、非常に少
なくすることができる。それ故、コストの大幅削減が可
能であるから、製品価格を低く抑えることができ、抗菌
性窯業製品の普及拡大に多大な貢献を果たす。環境衛生
面に対する関心が深まっている今日、本発明の波及効果
はきわめて大きいと考えられ、多くの要望に応えること
ができるものと言える。The silver molybdate incorporated in the surface treatment material according to the present invention exhibits much higher antibacterial performance than conventional antibacterial agents such as silver phosphate-based antibacterial agents. , The amount of silver required to obtain Therefore, since the cost can be significantly reduced, the product price can be kept low, and it contributes greatly to the spread of antibacterial ceramic products. Now that interest in environmental hygiene is growing, the ripple effect of the present invention is considered to be extremely large, and it can be said that many requests can be met.
【００２９】また、モリブデン酸銀と共に酸化チタンを
添加することにより、抗菌性能を一層向上させることが
できるから、高価な銀の使用量をさらに節約することが
可能である。依って大幅なコストダウンを実現でき、そ
の結果、抗菌性窯業製品の普及拡大を図るのが一層容易
になる。Further, by adding titanium oxide together with silver molybdate, the antibacterial performance can be further improved, so that the amount of expensive silver used can be further reduced. As a result, a significant cost reduction can be realized, and as a result, it becomes easier to promote the spread of antibacterial ceramic products.
【００３０】なお、本発明に係る表面処理材を、製品素
地に施釉して形成した通常の釉薬層の上へ重ねて塗布し
た場合は、耐候性・耐磨耗性に優れた抗菌性窯業製品を
提供できるという利点が得られる。When the surface-treating material according to the present invention is applied over a normal glaze layer formed by glazing a product base, an antibacterial ceramic product excellent in weather resistance and abrasion resistance is obtained. Can be provided.
【図１】 表１に基づいて作成したグラフであって、本
発明に係るモリブデン酸銀配合釉薬の抗菌効果を示すも
のである。FIG. 1 is a graph created based on Table 1, showing the antibacterial effect of the silver molybdate-containing glaze according to the present invention.
【図２】 表１に基づいて作成したグラフであって、従
来のリン酸銀配合釉薬の抗菌効果を示すものである。FIG. 2 is a graph created based on Table 1, showing the antibacterial effect of a conventional silver phosphate-containing glaze.
【図３】 表２に基づいて作成したグラフであって、モ
リブデン酸銀と共に酸化チタンを添加した場合の抗菌効
果を示すものである。FIG. 3 is a graph prepared based on Table 2 and shows an antibacterial effect when titanium oxide is added together with silver molybdate.
フロントページの続き (72)発明者 吉武 俊一 埼玉県大宮市北袋町１丁目297番地 三菱 マテリアル株式会社総合研究所内 (72)発明者 原田 省三 愛知県常滑市鯉江本町５丁目１番地 株式 会社イナックス内 (72)発明者 畑中 郁則 愛知県常滑市鯉江本町５丁目１番地 株式 会社イナックス内 Ｆターム(参考） 4H011 AA02 BA06 BB18 BB20 DA11 DD07 DF02 DF04 DG15 Continued on the front page (72) Inventor Shunichi Yoshitake 1-297 Kitabukuro-cho, Omiya-shi, Saitama Mitsubishi Materials Research Institute (72) Inventor Shozo Harada 5-1-1 Koie-Honcho, Tokoname-shi, Aichi Inax Corporation (72) Inventor Ikunori Hatanaka 5-1-1 Koiehonmachi, Tokoname-shi, Aichi F-term in Inax Co., Ltd. (Reference) 4H011 AA02 BA06 BB18 BB20 DA11 DD07 DF02 DF04 DG15
Claims (8)
懸濁液から成ることを特徴とする表面処理材。1. A surface treatment material comprising a suspension containing silver molybdate as an antibacterial agent.
し、１０〜５０％の割合で酸化チタンを添加した請求項
１に記載の表面処理材。2. The surface treatment material according to claim 1, wherein titanium oxide is added at a ratio of 10 to 50% based on silver molybdate mixed in the suspension.
載の表面処理材。3. The surface treatment material according to claim 1, wherein the suspension is a glaze.
れかに記載の表面処理材を塗布したのち、焼成すること
を特徴とする抗菌性窯業製品の製造方法。4. A method for producing an antibacterial ceramic product, which comprises applying the surface treatment material according to claim 1 to the surface of a product substrate, followed by firing.
へ請求項１乃至３のいずれかに記載の表面処理材を塗布
したのち、焼成することを特徴とする抗菌性窯業製品の
製造方法。5. A method for producing an antibacterial ceramic product, which comprises glazing the surface of a product base material, further applying the surface treatment material according to claim 1, and then firing. .
とを特徴とする抗菌性窯業製品。6. An antibacterial ceramic product comprising silver molybdate in a surface layer.
ンを存在させたことを特徴とする抗菌性窯業製品。7. An antibacterial ceramic product wherein titanium oxide is present together with silver molybdate in the surface layer.
記載の抗菌性窯業製品。8. The antibacterial ceramic product according to claim 6, wherein the surface layer is a glaze layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31435398A JP2000143369A (en) | 1998-11-05 | 1998-11-05 | Surface-treating agent and antimicrobial pottery product and its production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31435398A JP2000143369A (en) | 1998-11-05 | 1998-11-05 | Surface-treating agent and antimicrobial pottery product and its production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000143369A true JP2000143369A (en) | 2000-05-23 |
Family
ID=18052317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31435398A Withdrawn JP2000143369A (en) | 1998-11-05 | 1998-11-05 | Surface-treating agent and antimicrobial pottery product and its production |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000143369A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008058707A3 (en) * | 2006-11-13 | 2008-10-02 | Plansee Se | Antimicrobial agent |
| WO2011092522A3 (en) * | 2010-02-01 | 2011-11-24 | Giltech Limited | Anti-microbial glass composition |
| CN102502841A (en) * | 2011-11-07 | 2012-06-20 | 河北联合大学 | Method for preparing silver molybdate microspheres and nano rods |
| JP2014141493A (en) * | 2014-02-17 | 2014-08-07 | Sumitomo Electric Ind Ltd | Antibacterial ceramic industry product, ceramic industry surface treatment agent and manufacturing method of antibacterial ceramic industry product |
| WO2019053037A1 (en) * | 2017-09-15 | 2019-03-21 | Hecosol Gmbh | Anti-microbial coating |
| CN109942277A (en) * | 2019-04-24 | 2019-06-28 | 同曦集团有限公司 | A kind of negative ion antibiotic ceramic tile and preparation method thereof |
| CN111704481A (en) * | 2020-07-07 | 2020-09-25 | 佛山市三水普朗克新型材料有限公司 | Production process of antibacterial polished brick, preparation method of antibacterial agent and antibacterial polished brick |
| CN114538907A (en) * | 2022-03-25 | 2022-05-27 | 广东溢达纺织有限公司 | Antibacterial functional ceramic tile prepared from textile waste and preparation method thereof |
-
1998
- 1998-11-05 JP JP31435398A patent/JP2000143369A/en not_active Withdrawn
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|---|---|---|---|---|
| US9162013B2 (en) | 2006-11-13 | 2015-10-20 | Plansee Se | Substance with an antimicrobial effect |
| EP2428118A2 (en) | 2006-11-13 | 2012-03-14 | Guggenbichler, Joseph Peter | Antimicrobial agent |
| WO2008058707A3 (en) * | 2006-11-13 | 2008-10-02 | Plansee Se | Antimicrobial agent |
| EP2428118A3 (en) * | 2006-11-13 | 2012-10-10 | Guggenbichler, Joseph Peter | Antimicrobial agent |
| WO2011092522A3 (en) * | 2010-02-01 | 2011-11-24 | Giltech Limited | Anti-microbial glass composition |
| CN102502841A (en) * | 2011-11-07 | 2012-06-20 | 河北联合大学 | Method for preparing silver molybdate microspheres and nano rods |
| JP2014141493A (en) * | 2014-02-17 | 2014-08-07 | Sumitomo Electric Ind Ltd | Antibacterial ceramic industry product, ceramic industry surface treatment agent and manufacturing method of antibacterial ceramic industry product |
| WO2019053037A1 (en) * | 2017-09-15 | 2019-03-21 | Hecosol Gmbh | Anti-microbial coating |
| CN111432638A (en) * | 2017-09-15 | 2020-07-17 | 黑克索儿有限公司 | Antimicrobial coatings |
| JP2020533172A (en) * | 2017-09-15 | 2020-11-19 | ヘコソル ゲーエムベーハー | Antibacterial coating |
| CN109942277A (en) * | 2019-04-24 | 2019-06-28 | 同曦集团有限公司 | A kind of negative ion antibiotic ceramic tile and preparation method thereof |
| CN109942277B (en) * | 2019-04-24 | 2021-08-27 | 同曦集团有限公司 | Negative ion antibacterial ceramic tile and preparation method thereof |
| CN111704481A (en) * | 2020-07-07 | 2020-09-25 | 佛山市三水普朗克新型材料有限公司 | Production process of antibacterial polished brick, preparation method of antibacterial agent and antibacterial polished brick |
| CN111704481B (en) * | 2020-07-07 | 2022-09-02 | 佛山市三水普朗克新型材料有限公司 | Production process of antibacterial polished brick, preparation method of antibacterial agent and antibacterial polished brick |
| CN114538907A (en) * | 2022-03-25 | 2022-05-27 | 广东溢达纺织有限公司 | Antibacterial functional ceramic tile prepared from textile waste and preparation method thereof |
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