JPH0748142A - Production of glass containing silver ion - Google Patents
Production of glass containing silver ionInfo
- Publication number
- JPH0748142A JPH0748142A JP19455193A JP19455193A JPH0748142A JP H0748142 A JPH0748142 A JP H0748142A JP 19455193 A JP19455193 A JP 19455193A JP 19455193 A JP19455193 A JP 19455193A JP H0748142 A JPH0748142 A JP H0748142A
- Authority
- JP
- Japan
- Prior art keywords
- glass
- silver
- weight
- alkali metal
- producing
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C14/00—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix
- C03C14/006—Glass compositions containing a non-glass component, e.g. compositions containing fibres, filaments, whiskers, platelets, or the like, dispersed in a glass matrix the non-glass component being in the form of microcrystallites, e.g. of optically or electrically active material
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2204/00—Glasses, glazes or enamels with special properties
- C03C2204/02—Antibacterial glass, glaze or enamel
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2214/00—Nature of the non-vitreous component
- C03C2214/08—Metals
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Ceramic Engineering (AREA)
- Dispersion Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は銀イオン含有ガラスの製
造方法、特に抗菌性のある銀イオンを含有する硼珪酸ア
ルカリガラスからなる銀イオン含有ガラスの製造方法に
関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a silver ion-containing glass, and more particularly to a method for producing a silver ion-containing glass composed of an alkali borosilicate glass containing antibacterial silver ions.
【０００２】[0002]
【従来の技術】１価の銀イオン（Ａｇ+）および銅イオ
ン（Ｃｕ+）が微生物などの下等生物に対して毒性を示
すことはよく知られている。本明細書において、微生物
を、狭義の微生物である細菌、菌類、ウイルスおよび、
広義の微生物である原生動物、藻類などを含めたものと
して定義する。また、前記の微生物などに対して毒性作
用（抗菌作用を含む）を示すことを、単に抗菌性がある
ということにする。これまでに銀イオン（Ａｇ+）を硼
珪酸塩系の溶解性ガラスに含有させて抗菌性を付与する
方法が数多く提案されている（例えば特開平２−３０２
３５５および特公平４−５０８７８）。BACKGROUND OF THE INVENTION It is well known that monovalent silver ions (Ag +) and copper ions (Cu +) are toxic to lower organisms such as microorganisms. In the present specification, microorganisms include bacteria, fungi, viruses, which are microorganisms in a narrow sense, and
It is defined as including broadly defined microorganisms such as protozoa and algae. Further, showing a toxic effect (including an antibacterial effect) on the above-mentioned microorganisms is simply referred to as having antibacterial properties. Up to now, many methods have been proposed in which silver ions (Ag +) are contained in a borosilicate-based soluble glass to impart antibacterial properties (for example, JP-A-2-302).
355 and Japanese Patent Publication No. 4-50878).
【０００３】[0003]
【発明が解決しようとする課題】上記のＡｇ+含有硼珪
酸塩系ガラスにおいては、ガラス中に銀コロイドや金属
銀の析出が認められる。すなわち特開平２−３０２３５
５では、実施例で２０モル％のＢ2Ｏ3，５０モル％のＳ
ｉＯ2，３０モル％のＮａ2Ｏのガラス組成を挙げている
が、この組成物は金属Ａｇが析出しやすく、以下に述べ
る欠点を有する。In the above-mentioned Ag + -containing borosilicate glass, silver colloid and metallic silver are precipitated in the glass. That is, JP-A-2-30235
In Example 5, 20 mol% B2O3 and 50 mol% S were used in the examples.
Although a glass composition of iO2, 30 mol% Na2O is mentioned, this composition has the drawbacks described below because metal Ag easily precipitates.
【０００４】ガラスの製造工程では白金類がガラス熔融
用るつぼやポット、さらに熔融窯の内張りなどに多用さ
れている。ガラス中に銀がＡｇ+として存在する場合に
は何等問題は生じないが、熔融ガラス中に銀コロイドや
金属銀が析出するとこの銀が白金類と低融点の合金を作
って、脆くなり白金材料に亀裂が入ったりして、白金設
備のトラブルに成りやすい。In the glass manufacturing process, platinums are often used for crucibles and pots for melting glass, and for linings of melting furnaces. If silver exists as Ag + in the glass, no problem will occur, but when silver colloid or metallic silver is deposited in the molten glass, this silver forms an alloy with a low melting point with platinum and becomes brittle and becomes a platinum material. It is easy for platinum equipment to have troubles because of cracks in the surface.
【０００５】また、抗菌作用があるのはガラス中のＡｇ
+であって、ガラス中に銀コロイドや金属状態で存在す
る銀は抗菌作用はあまり期待できない。熔融ガラス中の
銀コロイドや金属銀の析出を少なくして、できるだけ銀
の大部分をＡｇ+の状態にすれば少量の銀で抗菌作用を
発揮することになり、高価な銀の使用量を少なくするこ
とができる。Further, Ag in glass has an antibacterial action.
+, And silver present in the glass in a colloidal silver or metallic state cannot be expected to have an antibacterial action. By reducing the precipitation of silver colloid and metallic silver in the glass melt and making most of the silver in the Ag + state as much as possible, a small amount of silver will exhibit an antibacterial effect, reducing the amount of expensive silver used. can do.
【０００６】ガラス中にＡｇ+を安定に含有させる方法
として、酸化性雰囲気での溶融（特開平１−３１７１３
３）が提案されているが、この方法では銀コロイドある
いは金属銀の析出抑制が十分ではなく、また溶解のため
の費用が増加して経済的ではない。As a method of stably containing Ag + in glass, melting in an oxidizing atmosphere (Japanese Patent Laid-Open No. 1-31713)
Although 3) has been proposed, this method is not economical because the precipitation of silver colloid or metallic silver is not sufficiently suppressed and the cost for dissolution increases.
【０００７】本発明は上記の問題点を解決して、銀コロ
イドあるいは金属銀の析出をなくすることにより、白金
設備のトラブルが生じることなく、かつ原料として用い
た銀の大部分を効率的に抗菌作用の強いＡｇ+として含
むガラス組成物の製造法を提供するものである。The present invention solves the above problems and eliminates the precipitation of silver colloid or metallic silver, so that the trouble of platinum equipment does not occur and most of the silver used as a raw material is efficiently used. The present invention provides a method for producing a glass composition containing Ag + having a strong antibacterial action.
【０００８】[0008]
【課題を解決するための手段】本発明は前述の課題を解
決すべくなされたものである。すなわち本発明は、銀イ
オンを含有する硼珪酸アルカリガラスの製造方法におい
て、アルカリ金属および硼素の原料の少なくとも一部と
してアルカリ金属の硼酸塩を使用することを特徴とする
銀イオン含有ガラスの製造方法である。The present invention has been made to solve the above problems. That is, the present invention provides a method for producing a silver ion-containing glass, characterized by using an alkali metal borate as at least a part of the alkali metal and boron raw materials in the method for producing a silver borosilicate alkali glass. Is.
【０００９】本発明において、原料の少なくとも一部と
して使用するアルカリ金属の硼酸塩は硼珪酸塩系ガラス
のアルカリ金属酸化物（Ｎａ2Ｏ、Ｋ2Ｏなど）成分およ
びＢ2Ｏ3成分の原料となる。アルカリ金属の硼酸塩とし
ては、例えば四硼酸ナトリウム、五硼酸ナトリウム、六
硼酸ナトリウム、八硼酸ナトリウム、二硼酸ナトリウム
などの硼酸ナトリウム；メタ硼酸カリウム、四硼酸カリ
ウム、五硼酸カリウム、六硼酸カリウム、八硼酸カリウ
ムなどの硼酸カリウム、を列挙することができる。それ
らの中で、アルカリ金属の含水硼酸塩、例えば含水四硼
酸ナトリウムが特に好ましい。その理由は、アルカリ金
属の含水硼酸塩、例えば含水四硼酸ナトリウムが、銀成
分の原料として使われる硝酸銀の分解温度（４４４℃）
以下で融液になり、硝酸銀をよく溶かし込むため、Ａｇ
+を安定化させ、溶融温度でもそのままガラス中にＡｇ+
として存在させると思われる。In the present invention, the alkali metal borate used as at least a part of the raw material is a raw material for the alkali metal oxide (Na2O, K2O, etc.) component and the B2O3 component of the borosilicate glass. Examples of the alkali metal borate include sodium borate such as sodium tetraborate, sodium pentaborate, sodium hexaborate, sodium octaborate and sodium diborate; potassium metaborate, potassium tetraborate, potassium pentaborate, potassium hexaborate and octaborate. Mention may be made of potassium borate, such as potassium borate. Of these, hydrous borate salts of alkali metals, such as hydrous sodium tetraborate, are particularly preferred. The reason for this is that the hydrous borate of an alkali metal, for example, hydrous sodium tetraborate, is used as the raw material for the silver component in the decomposition temperature of silver nitrate (444 ° C).
It becomes a melt below and dissolves silver nitrate well, so Ag
Stabilizes +, and Ag + remains in the glass even at the melting temperature.
It seems to exist as.
【００１０】またナトリウムの硫酸塩である芒硝は、一
般にガラスの清澄剤として用いられているが、清澄作用
の他に酸化作用も持ち合わせている。アルカリ金属の硼
酸塩に芒硝を併用させることによってさらに銀を酸化さ
せ、ガラス中にＡｇ+としてさらに安定に溶解させるこ
とができる。芒硝の好ましい使用量はガラス原料の珪砂
に対して１〜１２重量％である。[0010] Glauber's salt, which is a sodium sulfate, is generally used as a fining agent for glass, but it also has an oxidizing action in addition to the refining action. It is possible to further oxidize silver and further stably dissolve it as Ag + in the glass by using an alkaline metal borate in combination with Glauber's salt. The preferable amount of Glauber's salt used is 1 to 12% by weight based on the silica sand as the glass raw material.
【００１１】Ａｇ+含有硼珪酸塩系ガラスのアルカリ金
属酸化物成分の少なくとも８０重量％、より好ましくは
少なくとも９５重量％をアルカリ金属の硼酸塩から供給
することが好ましい。It is preferred to provide at least 80% by weight, more preferably at least 95% by weight, of the alkali metal oxide component of the Ag + containing borosilicate glass from the alkali metal borate.
【００１２】上記アルカリ金属の硼酸塩として四硼酸ナ
トリウムを使用する場合、四硼酸ナトリウムはＮａ2
Ｏ：Ｂ2Ｏ3＝１：２．２５（重量比）の割合で含有する
ので、次に述べるように、Ａｇ+含有硼珪酸塩系ガラス
がＢ2Ｏ3／Ｎａ2Ｏ（重量比）が２．２５以上の割合の
組成を有することが好ましい。すなわち、ガラス組成の
Ｂ2Ｏ3／Ｎａ2Ｏ（重量比）が２．２５以上であるとき
は、四硼酸ナトリウムの他にＢ2Ｏ3を供給しなければな
らず、その原料に硼酸や三酸化二硼素を使用することに
なるが、Ｂ2Ｏ3はＡｇ+を安定にする成分なので問題は
ない。しかし２．２５未満になると、逆にＮａ2Ｏを四
硼酸ナトリウム以外の原料で供給しなければならない
が、Ｎａ2Ｏ原料として一般によく用いられている炭酸
塩または硝酸塩ではＡｇ+を安定にすることができな
い。Ｎａ2Ｏ原料としての炭酸塩および硝酸塩の使用量
合計はガラス原料に対して酸化物換算で２０重量％未満
にすることが好ましい。When sodium tetraborate is used as the alkali metal borate, sodium tetraborate is Na2.
Since O: B2O3 = 1: 2.25 (weight ratio), the Ag + -containing borosilicate glass has a B2O3 / Na2O (weight ratio) ratio of 2.25 or more. It is preferable to have a composition. That is, when the B2O3 / Na2O (weight ratio) of the glass composition is 2.25 or more, B2O3 must be supplied in addition to sodium tetraborate, and boric acid or diboron trioxide should be used as the raw material. However, since B2O3 is a component that stabilizes Ag +, there is no problem. However, when it is less than 2.25, Na2O must be supplied as a raw material other than sodium tetraborate. However, Ag + cannot be stabilized by the carbonate or nitrate commonly used as a Na2O raw material. The total amount of carbonates and nitrates used as Na2O raw materials is preferably less than 20% by weight in terms of oxides based on the glass raw materials.
【００１３】本発明において、抗菌性ガラスとして、Ｓ
ｉＯ2 ２５〜６０重量％、Ａｌ2Ｏ3 ０〜２０重量
％、Ｎａ2Ｏ ８〜２６重量％、Ｂ2Ｏ3 １８〜６０重
量％、Ａｇ2Ｏ ０．０５〜２．０重量％を主成分とす
る硼珪酸塩系ガラスが好ましく用いられ、この原料にナ
トリウムの硼酸塩、特に含水四硼酸ナトリウムを使用す
ることによって、または芒硝と併用することによって、
銀をＡｇ+として安定に溶解させることができるのであ
る。In the present invention, S is used as the antibacterial glass.
A borosilicate glass containing 25 to 60% by weight of iO2, 0 to 20% by weight of Al2O3, 8 to 26% by weight of Na2O, 18 to 60% by weight of B2O3 and 0.05 to 2.0% by weight of Ag2O is preferable. Used by using sodium borate of this material, especially hydrous sodium tetraborate, or in combination with Glauber's salt,
It is possible to stably dissolve silver as Ag +.
【００１４】[0014]
【作用】前述の硼珪酸塩系ガラスにおいて、アルカリ金
属酸化物の原料にアルカリ金属の硼酸塩、特に含水四硼
酸ナトリウムを用いることにより、銀コロイドや金属銀
が析出することなくＡｇ+として安定にガラス中に溶け
込むため、設備に使用されている白金類を損傷すること
なく、また抗菌作用をもつ溶解性のガラスを提供するこ
とができる。In the above-mentioned borosilicate glass, by using an alkali metal borate as a raw material of an alkali metal oxide, particularly hydrous sodium tetraborate, silver colloid and metallic silver are stably deposited as Ag + without being deposited. Since it dissolves in the glass, it is possible to provide a soluble glass having an antibacterial action without damaging platinum used in equipment.
【００１５】[0015]
【実施例】表１に示すガラス１〜５の目標組成になるよ
うに珪砂，酸化アルミニウム，芒硝，炭酸ナトリウム，
炭酸カリウム,硝酸ナトリウム，硝酸カリウム,四硼酸ナ
トリウムの無水物・５水和物・１０水和物（硼砂），四
硼酸カリウムの４水和物, 六硼酸カリウムの５水和物,
硼酸，および硝酸銀を調合して表２〜９に示すようにバ
ッチを調整した。実施例１〜５、比較例１〜４（表２〜
３）の調合はガラス１の組成になるように、実施例６,
７、比較例５,６（表４）の調合はガラス２の組成にな
るように、実施例８,９、比較例７,８（表５）の調合は
ガラス３の組成になるように、実施例１０〜１４、比較
例９〜１２（表６〜７）の調合はガラス４の組成になる
ように、実施例１５〜１８、比較例１３,１４（表８〜
９）の調合はガラス５の組成になるようにそれぞれ調整
している。なお表中の原料の数値はガラス３００ｇをつ
くるのに必要な重量（ｇ）を表し、また表３、４、５，
７，９の「溶解しているＡｇ+量(%)」の数値は、銀の原
料である硝酸銀量（Ａｇ2 Ｏ量に換算）に対するガラス
中に溶解しているＡｇ+量（Ａｇ2Ｏ量に換算、ただし析
出金属銀は除外し、コロイド銀を含む）の割合（％）
（計算値）を表している。このバッチを、金属銀の析出
が多いと予測される場合にはアルミナ坩堝に入れ、それ
以外の場合には白金坩堝に入れて、電気炉内で１４００
〜１５００℃、２時間加熱して溶融した。溶融したガラ
スをステンレス板の上に流し出し、板状に成形後、徐冷
した。[Example] Silica sand, aluminum oxide, mirabilite, sodium carbonate, so that the target composition of glasses 1 to 5 shown in Table 1 may be obtained.
Potassium carbonate, sodium nitrate, potassium nitrate, sodium tetraborate anhydrous pentahydrate decahydrate (borax), potassium tetraborate tetrahydrate, potassium hexaborate pentahydrate,
Boric acid and silver nitrate were blended to prepare batches as shown in Tables 2-9. Examples 1-5, Comparative Examples 1-4 (Table 2
3) so that the composition of glass 1 is the same as in Example 6,
7, the composition of Comparative Examples 5 and 6 (Table 4) has the composition of glass 2, and the composition of Examples 8 and 9 and Comparative Examples 7 and 8 (Table 5) has the composition of glass 3, The formulations of Examples 10 to 14 and Comparative Examples 9 to 12 (Tables 6 to 7) were adjusted so that the composition of Glass 4 was achieved. Examples 15 to 18 and Comparative Examples 13 and 14 (Tables 8 to 8).
The formulation of 9) is adjusted so that the composition of glass 5 is obtained. The numerical values of the raw materials in the table represent the weight (g) required to make 300 g of glass,
Figures "dissolved to have Ag + amount (%)" of 7, 9, converted to Ag + amount (Ag2O amount dissolved in the glass to the amount of silver nitrate is silver raw material (converted to Ag2 O amount) , But excludes deposited metal silver and includes colloidal silver)
(Calculated value). This batch was placed in an alumina crucible if it was predicted that a large amount of metallic silver was precipitated, otherwise placed in a platinum crucible and placed in an electric furnace at 1400.
˜1500 ° C. was heated and melted for 2 hours. The molten glass was poured onto a stainless plate, shaped into a plate, and then gradually cooled.
【００１６】これらの試料について、金属銀の析出状
態、ガラスの着色状態を次に示す方法により測定した。 ・金属銀の析出状況 上述のようにして溶融，徐冷後の板状ガラスにハロゲン
ランプを照射して、その板状ガラス中に存在する、長径
が１０μｍ以上の金属銀を、４０倍の倍率のル−ペを用
いてカウントし、ガラス１００ｇ当りの個数で表し、金
属銀の析出が全くなかった場合には◎、金属銀の数が１
０個以下の場合には○、１０個を超える場合には×で示
した。金属銀の大きさ（長径）は大部分が８０μｍ以下
のため、１０個以下の場合には白金類や品質に与える影
響は小さくて、製品の品種によっては無視できる程度で
ある。 ・ガラスの着色状態上のサンプルで黄色や褐色の発色
（銀コロイドによる発色）が肉眼で認められない場合を
○とし、着色が認められる場合を×とした。着色が認め
られる場合の銀コロイドの重量は、金属銀の数が１０個
を超える場合の金属銀重量に相当する。With respect to these samples, the deposition state of metallic silver and the coloring state of glass were measured by the following methods.・ Precipitation of metallic silver The plate glass after melting and gradually cooling as described above is irradiated with a halogen lamp, and the metallic silver having a major axis of 10 μm or more present in the plate glass is magnified 40 times. It is counted by using a No. loupe and is expressed as the number per 100 g of glass. When there is no precipitation of metallic silver, ◎, and the number of metallic silver is 1.
When the number is 0 or less, it is shown by ◯, and when it is more than 10, it is shown by x. Since most of the size (major axis) of metallic silver is 80 μm or less, when the number is 10 or less, the influence on platinum and quality is small, and it is negligible depending on the product type. -In the sample on the colored state of the glass, the case where yellow or brown coloration (coloring due to silver colloid) was not visually observed was marked with O, and the case where coloration was recognized was marked with X. The weight of the silver colloid when coloring is observed corresponds to the weight of metallic silver when the number of metallic silver exceeds 10.
【００１７】[0017]
【表１】 ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝ 組成 ガラス１ ガラス２ ガラス３ ガラス４ ガラス５ (重量％) (重量％) (重量％) (重量％) (重量％) −−−−−−−−−−−−−−−−−−−−−−−−−−−−−−−− ＳｉＯ2 ５５．０ ５５．０ ５５．０ ４０．０ ５５．０ Ａｌ2Ｏ3 ９．０ ９．０ ９．０ ０ １０．０ Ｎａ2Ｏ １０．０ ０ ０．３ １０．０ ２０．０ Ｋ2Ｏ ０ １０．０ ９．７ ０ ０ Ｂ2Ｏ3 ２６．０ ２６．０ ２６．０ ５０．０ １５．０ Ａｇ2Ｏ ０．４ ０．４ ０．４ １．５ ０．４ ＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝＝。[Table 1] ================================ Composition Glass 1 Glass 2 Glass 3 Glass 4 Glass 5 (wt% ) (% By weight) (% by weight) (% by weight) (% by weight) ------------------------------------------------ 55.0 55.0 55.0 40.0 55.0 Al2O3 9.0 9.0 9.0 9.0 10.0 Na2O 10.0 0 0.3 10.0 10.0 20.0 K2O 10.0 10.0 9. 7 0 B2O3 26.0 26.0 26.0 50.0 15.0 Ag2O 0.4 0.4 0.4 0.4 1.5 0.4 ================ =================.
【００１８】[0018]
【表２】 [Table 2]
【００１９】[0019]
【表３】 [Table 3]
【００２０】[0020]
【表４】 [Table 4]
【００２１】[0021]
【表５】 [Table 5]
【００２２】[0022]
【表６】 [Table 6]
【００２３】[0023]
【表７】 [Table 7]
【００２４】[0024]
【表８】 [Table 8]
【００２５】[0025]
【表９】 [Table 9]
【００２６】表２〜９から明らかなように、実施例のい
ずれのガラスも金属銀の析出は全くないか、無視できる
程度に少なく、また着色の心配もない。それに対して、
比較例のガラスは以下に述べる欠点を持つ。比較例１,
２,５,６,９,10,13,14は金属銀が非常に多く析出し、さ
らにガラスが着色する。その他の比較例はガラスが着色
することはないが、金属銀は多く析出する。As is clear from Tables 2 to 9, in all the glasses of Examples, metallic silver was not deposited at all, or was negligibly small, and there was no fear of coloring. On the other hand,
The glass of the comparative example has the following drawbacks. Comparative Example 1,
In 2,5,6,9,10,13,14, a very large amount of metallic silver is deposited and the glass is colored. In other comparative examples, the glass is not colored, but a large amount of metallic silver is deposited.
【００２７】なお、比較例のすべてについて、ガラス中
に溶解しているＡｇ+量（Ａｇ2Ｏ量で換算）を計算する
と、硝酸銀の８０〜９８％がＡｇ+ としてガラス中に溶
解していることがわかったが、実際に比較例１を200cc
の白金るつぼ（厚み0.5mm）を用いて前記の溶融条件で
１回溶融した結果、白金が脆化し、クラックが発生し
た。When the amount of Ag + dissolved in the glass (calculated as the amount of Ag 2 O) was calculated for all of the comparative examples, it was found that 80 to 98% of the silver nitrate was dissolved in the glass as Ag +. Okay, but actually 200cc of Comparative Example 1
As a result of melting once using the platinum crucible of No. 3 (thickness: 0.5 mm) under the above melting conditions, platinum became brittle and cracks occurred.
【００２８】最後に、実施例で金属銀が全く析出しなか
ったものについては、これを前記の溶融条件で数十回白
金るつぼで溶融しても、白金るつぼが脆化することはな
かった。Finally, in the examples in which no metallic silver was deposited, the platinum crucible was not embrittled even if it was melted several tens of times in the platinum crucible under the above melting conditions.
【００２９】[0029]
【発明の効果】以上のように、本発明の銀イオン含有ガ
ラスは硼珪酸塩系ガラスのアルカリ金属酸化物の原料に
アルカリ金属の硼酸塩、特に含水四硼酸ナトリウムを使
用することによって、コスト的に有利で抗菌性に優れた
銀イオンを含有するガラスの製造を可能にすることがで
きる。INDUSTRIAL APPLICABILITY As described above, the silver ion-containing glass of the present invention is cost-effective by using an alkali metal borate, particularly hydrous sodium tetraborate, as a raw material for an alkali metal oxide of a borosilicate glass. It is possible to manufacture a glass containing silver ions, which is advantageous to the above and has excellent antibacterial properties.
Claims (5)
スの製造方法において、アルカリ金属および硼素の原料
の少なくとも一部としてアルカリ金属の硼酸塩を使用す
ることを特徴とする銀イオン含有ガラスの製造方法。1. A method for producing a glass containing silver ions, which comprises using a borate of an alkali metal as at least a part of a raw material for the alkali metal and boron in the method for producing an alkali borosilicate glass containing silver ions. .
有する四硼酸ナトリウムである請求項１記載の銀イオン
含有ガラスの製造方法。2. The method for producing a glass containing silver ions according to claim 1, wherein the alkali metal borate is sodium tetraborate containing water of crystallization.
して、更に芒硝を使用する請求項１記載の銀イオン含有
ガラスの製造方法。3. The method for producing a silver ion-containing glass according to claim 1, wherein Glauber's salt is further used as at least a part of the alkali metal raw material.
２５〜６０重量％、Ａｌ2Ｏ3 ０〜２０重量％、Ｎａ2Ｏ
８〜２６重量％、Ｂ2Ｏ3 １８〜６０重量％、Ａｇ2Ｏ
０．０５〜２．０重量％を主成分とする組成物である請
求項１記載の銀イオン含有ガラスの製造方法。4. The alkali borosilicate glass is SiO 2
25-60% by weight, Al2O3 0-20% by weight, Na2O
8 to 26% by weight, B2O3 18 to 60% by weight, Ag2O
The method for producing a silver ion-containing glass according to claim 1, which is a composition containing 0.05 to 2.0% by weight as a main component.
Ｎａ2Ｏ（重量比）がすくなくとも２．２５の成分比を
有するものである請求項４記載の銀イオン含有ガラスの
製造方法。5. The alkali borosilicate glass is B2O3 /
The method for producing a silver ion-containing glass according to claim 4, wherein Na2O (weight ratio) has a component ratio of at least 2.25.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19455193A JP3428080B2 (en) | 1993-08-05 | 1993-08-05 | Method for producing silver ion-containing glass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19455193A JP3428080B2 (en) | 1993-08-05 | 1993-08-05 | Method for producing silver ion-containing glass |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0748142A true JPH0748142A (en) | 1995-02-21 |
| JP3428080B2 JP3428080B2 (en) | 2003-07-22 |
Family
ID=16326419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19455193A Expired - Fee Related JP3428080B2 (en) | 1993-08-05 | 1993-08-05 | Method for producing silver ion-containing glass |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3428080B2 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005030665A1 (en) * | 2003-09-30 | 2005-04-07 | Schott Ag | Antimicrobial glass and glass ceramic surfaces and their production |
| US6893991B2 (en) * | 2000-08-15 | 2005-05-17 | Corning Incorporated | High silver borosilicate glasses |
| US6921546B2 (en) | 2003-02-20 | 2005-07-26 | Gemtron Corporation | Antimicrobial glass and glass-like products and method of preparing same |
| US7709027B2 (en) | 2001-08-22 | 2010-05-04 | Schott Ag | Antimicrobial, anti-inflammatory, wound-healing glass powder and use thereof |
| US8080490B2 (en) | 2003-02-25 | 2011-12-20 | Schott Ag | Antimicrobial phosphate glass |
| KR20120051003A (en) | 2009-07-16 | 2012-05-21 | 도아고세이가부시키가이샤 | Particulate anti-bacterial agent for treatment of water |
| JP2016500654A (en) * | 2012-09-26 | 2016-01-14 | スリーエム イノベイティブ プロパティズ カンパニー | Coatable composition, antibacterial composition, antibacterial article, and method for producing the same |
| JP2017048095A (en) * | 2015-09-04 | 2017-03-09 | 旭硝子株式会社 | Production method of glass |
-
1993
- 1993-08-05 JP JP19455193A patent/JP3428080B2/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6893991B2 (en) * | 2000-08-15 | 2005-05-17 | Corning Incorporated | High silver borosilicate glasses |
| US7709027B2 (en) | 2001-08-22 | 2010-05-04 | Schott Ag | Antimicrobial, anti-inflammatory, wound-healing glass powder and use thereof |
| US6921546B2 (en) | 2003-02-20 | 2005-07-26 | Gemtron Corporation | Antimicrobial glass and glass-like products and method of preparing same |
| US8080490B2 (en) | 2003-02-25 | 2011-12-20 | Schott Ag | Antimicrobial phosphate glass |
| WO2005030665A1 (en) * | 2003-09-30 | 2005-04-07 | Schott Ag | Antimicrobial glass and glass ceramic surfaces and their production |
| WO2005033034A1 (en) * | 2003-09-30 | 2005-04-14 | Schott Ag | Antimicrobial glass surfaces of glass powders |
| WO2005042437A2 (en) * | 2003-09-30 | 2005-05-12 | Schott Ag | Antimicrobial glass and glass ceramic surfaces and their production |
| WO2005042437A3 (en) * | 2003-09-30 | 2009-08-27 | Schott Ag | Antimicrobial glass and glass ceramic surfaces and their production |
| KR20120051003A (en) | 2009-07-16 | 2012-05-21 | 도아고세이가부시키가이샤 | Particulate anti-bacterial agent for treatment of water |
| US8470374B2 (en) | 2009-07-16 | 2013-06-25 | Toagosei Co., Ltd. | Granular antimicrobial agent for water processing |
| JP2016500654A (en) * | 2012-09-26 | 2016-01-14 | スリーエム イノベイティブ プロパティズ カンパニー | Coatable composition, antibacterial composition, antibacterial article, and method for producing the same |
| JP2017048095A (en) * | 2015-09-04 | 2017-03-09 | 旭硝子株式会社 | Production method of glass |
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| Publication number | Publication date |
|---|---|
| JP3428080B2 (en) | 2003-07-22 |
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