JP3021287B2 - Antibacterial agent for sandbox - Google Patents
Antibacterial agent for sandboxInfo
- Publication number
- JP3021287B2 JP3021287B2 JP15099794A JP15099794A JP3021287B2 JP 3021287 B2 JP3021287 B2 JP 3021287B2 JP 15099794 A JP15099794 A JP 15099794A JP 15099794 A JP15099794 A JP 15099794A JP 3021287 B2 JP3021287 B2 JP 3021287B2
- Authority
- JP
- Japan
- Prior art keywords
- mol
- glass
- silver
- sandbox
- sand
- 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 - Fee Related
Links
Landscapes
- Agricultural Chemicals And Associated Chemicals (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、公園等の砂場が雑菌で
汚染されるのを的確に防止することができる砂場用抗菌
剤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 agent for sandboxes that can accurately prevent sandboxes in parks and the like from being contaminated with various bacteria.
【０００２】[0002]
【従来の技術】公園に設置されている砂場には、犬、猫
等のペットが侵入して***物を残すため、大腸菌をはじ
め大量の雑菌や回虫の卵が含まれていることが調査の結
果判明している。このために雑菌が砂場で遊ぶ幼児の手
指に付着して健康を害するおそれがある。また、ペット
に寄生する回虫の卵は人体に入っても成虫にはならない
ものの、肝機能障害などを引き起こすおそれがある。そ
こで砂場の周囲に金網を張ってペットの侵入を防止する
ことも検討されているが、砂場が利用しにくくなるとい
う問題点があるうえ、猫等の侵入を完全に防止すること
は困難であった。2. Description of the Related Art A sandbox installed in a park contains a large amount of bacteria and roundworm eggs, including Escherichia coli, because pets such as dogs and cats invade and leave excrement. The result is known. For this reason, there is a possibility that germs may adhere to the fingers of the infant playing in the sandbox and harm health. Further, roundworm eggs parasitizing pets do not become adults when they enter the human body, but may cause liver dysfunction. To prevent pets from penetrating by placing a wire net around the sandbox, it is difficult to use the sandbox, and it is difficult to completely prevent cats from entering. Was.
【０００３】また、砂場に殺虫剤や殺菌剤を散布するこ
とも考えられるが、殺虫剤や殺菌剤が人体に影響を及ぼ
す危険性があるために実際に使用された例はなく、また
屋外では揮発したり太陽光線等により分解されるため、
殺虫剤や殺菌剤の効力が短期間で失われてしまうという
問題点もあった。[0003] In addition, it is conceivable to spray insecticides and fungicides on sand pits. However, there is no example of actually using insecticides or fungicides due to the danger of affecting the human body. Because it is volatilized or decomposed by sunlight, etc.
There is also a problem that the efficacy of the insecticide or fungicide is lost in a short time.
【０００４】[0004]
【発明が解決しようとする課題】本発明は上記のような
従来の問題点を解決して、砂場内の大腸菌等の雑菌や回
虫卵を減少させることができるとともにその効果を長期
間にわたって維持することができ、更には生産性、保管
性等にもすぐれた砂場用抗菌剤を提供することを目的と
して完成されたものである。DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned conventional problems and can reduce bacteria and roundworm eggs such as Escherichia coli in a sandbox and maintain the effect for a long period of time. The present invention has been completed for the purpose of providing an antibacterial agent for sandboxes which is excellent in productivity, storage property and the like.
【０００５】[0005]
【課題を解決するための手段】上記の課題を解決するた
めになされた本発明の砂場用抗菌剤は、P2O5：40〜60モ
ル％、CaO 、MgO 、ZnO から選択される１種または２種
以上：35〜45モル％、K2O またはNa2O：15モル％以下、
Al2O3 ：２〜６モル％、SiO2：10モル％以下からなる組
成のP2O5系溶解性ガラスに重量％で０．５〜２％のAg2O
を添加した銀含有溶解性ガラスからなることを特徴とす
るものである。Means for Solving the Problems] Sand antibacterial agent of the present invention has been made to solve the aforementioned problem, P 2 O 5: 40~60 mol%, one selected CaO, MgO, ZnO, Or two or more: 35 to 45 mol%, K 2 O or Na 2 O: 15 mol% or less,
0.5 to 2% by weight of Ag 2 O in a P 2 O 5 -based melting glass having a composition of Al 2 O 3 : 2 to 6 mol% and SiO 2 : 10 mol% or less
Characterized by being made of a silver-containing melting glass to which is added.
【０００６】ここで溶解性ガラスとは、制御された溶解
速度を持つようにガラスの物理的、化学的特性を考慮し
て組成を調整したガラスの総称であり、銀化合物を含有
させた銀含有溶解性ガラスは水分との接触により数時間
から数年間の任意の期間にわたって定められた一定速度
で銀イオンを溶出させることができるものであり、銀の
添加量としては溶解性ガラスに対して重量％で０．５〜
２％のAg2Oが添加される。銀の添加量が０．５重量％よ
り少ないと十分な抗菌作用を発揮することができず、２
重量％より多いと不経済となるからである。[0006] The term "melting glass" is a generic term for glass whose composition is adjusted in consideration of the physical and chemical properties of the glass so as to have a controlled melting rate, and which contains silver containing a silver compound. Melting glass is capable of eluting silver ions at a fixed rate over an arbitrary period of several hours to several years by contact with moisture, and the amount of silver added is 0.5 to 0.5%
2% Ag 2 O is added. If the amount of silver is less than 0.5% by weight, a sufficient antibacterial effect cannot be exhibited, and
If the content is more than the weight%, it becomes uneconomical.
【０００７】前記溶解性ガラスとしては所定の組成から
なるP2O5系のガラスを使用し、P2O5はモル％で40〜60％
の範囲のものとする。P2O5が40％より少ないとガラス化
が困難となり、60％より多いと梅雨場や夏場の高温多湿
時に吸湿固化して砂場に散布することが不適当となるう
えに保管も困難となり、またｐＨが酸性化してしまうか
らである。CaO 、MgO 、ZnO から選択される１種または
２種以上はモル％で35〜45％の範囲のものとする。35％
より少ないと溶解速度が速くなって長期間にわたる溶解
性が期待できなくなり、45％より多いとガラス化が困難
となるからである。K2O またはNa2Oは15モル％以下とす
る。これより多い場合は銀イオンの溶出量が増大すると
ともにガラス全体の溶解も速くなって長期間にわたる抗
菌作用が維持できなくなるおそれがあるからである。Al
2O3 はモル％で２〜６％の範囲のものとする。２％より
少ないと溶解速度が速くなって長期間にわたる溶解性が
期待できなくなり、６％より多いと銀イオンの溶出量が
抑制されて十分な抗菌作用を発揮することができなくな
るからである。SiO2は10モル％以下とする。これより多
い場合はP2O5の網目構造が寸断されてガラスの溶出・溶
解が速くなって長期間にわたる抗菌作用が維持できなく
なるおそれがあるとともに、高温多湿時の吸湿固化も著
しくなる傾向がある。K2O またはNa2Oが15モル％以下と
少量であるためガラスの溶融成形時において粘度を高く
保つことができ、耐火物の侵食がなく優れた生産性を発
揮できる。As the melting glass, a P 2 O 5 glass having a predetermined composition is used, and P 2 O 5 is 40 to 60% by mol%.
Of the range. If the content of P 2 O 5 is less than 40%, vitrification becomes difficult. If it is more than 60%, it becomes improper to absorb and solidify in a rainy season or a high temperature and humidity in summer and sprayed on a sand pit, and storage becomes difficult. Also, the pH is acidified. One or more selected from CaO, MgO, and ZnO are in the range of 35 to 45% by mol%. 35%
If the amount is less than this, the dissolution rate becomes high, so that long-term solubility cannot be expected. If the amount is more than 45%, vitrification becomes difficult. K 2 O or Na 2 O is 15 mol% or less. If the amount is more than this, the elution amount of silver ions increases, and the dissolution of the whole glass is accelerated, so that it may be impossible to maintain the antibacterial action for a long period. Al
2 O 3 is in the range of 2 to 6% by mol%. If the amount is less than 2%, the dissolution rate becomes high and solubility over a long period of time cannot be expected. If the amount is more than 6%, the elution amount of silver ions is suppressed, and sufficient antibacterial action cannot be exhibited. SiO 2 is set to 10 mol% or less. If the amount is larger than this, the network structure of P 2 O 5 is cut, and the elution and melting of the glass may be accelerated, and the antibacterial action for a long time may not be maintained, and the moisture absorption and solidification at the time of high temperature and high humidity tend to be remarkable. is there. Since the content of K 2 O or Na 2 O is as small as 15 mol% or less, the viscosity can be kept high at the time of glass melt molding, and excellent productivity can be exhibited without refractory erosion.
【０００８】前記の銀含有溶解性ガラスの表面にはシリ
コーンオイルを被覆しておくこともでき、この場合には
防水性を発揮して梅雨などの高温多湿時に吸湿固化する
現象を避けることができる。このシリコーンオイルは、
溶解性ガラスの粉砕時に０．１〜１重量％の範囲で添加
することが好ましい。０．１重量％よりも少ないと十分
な防水性を発揮することが困難となり、１重量％より多
いとオイルによるベタツキが生じるおそれがあり、また
銀イオンの溶出が抑制されるおそれが生じるからであ
る。The surface of the silver-containing soluble glass may be coated with silicone oil. In this case, a waterproof property is exhibited, and the phenomenon of moisture absorption and solidification during high temperature and high humidity such as rainy season can be avoided. . This silicone oil is
It is preferable to add the molten glass in the range of 0.1 to 1% by weight at the time of pulverization. If the amount is less than 0.1% by weight, it is difficult to exhibit sufficient waterproofness. If the amount is more than 1% by weight, stickiness due to oil may occur, and elution of silver ions may be suppressed. is there.
【０００９】なお、銀含有溶解性ガラスの砂場への散布
は砂場の砂の粒度にできるだけ近い状態で行うことが好
ましい。また、平均的な砂場の砂の粒度分布である840
〜2000μｍが約２５％、300 〜840 μｍが約５０％、30
0 μｍ以下が約25％の粒度分布としたものを砂に対して
約１％混合して均一に散布することが好ましい。It is preferable that the silver-containing molten glass is sprayed on the sandbox in a state as close as possible to the particle size of the sand in the sandbox. The average particle size distribution of sand in the sandbox is 840
20002000 μm is about 25%, 300-840 μm is about 50%, 30
It is preferable that about 25% of the particle size distribution of 0 μm or less is mixed with sand at about 1% and uniformly dispersed.
【００１０】[0010]
【作用】以上のような銀含有溶解性ガラスの粒子を砂粒
子中に分散させておけば、雨水や地中の水分との接触に
より溶解性ガラスから抗菌性のある銀イオンが溶出し、
砂中の大腸菌等の雑菌の繁殖を防止したり、回虫卵を死
滅させたりすることができる。このために砂場で遊ぶ幼
児が砂を口に入れても、健康が損なわれるおそれがな
い。また銀イオンは人体に対して安全であるうえ、３年
程度の長期間にわたりその効力を安全に維持することが
できる。[Function] If the particles of the above-mentioned silver-containing soluble glass are dispersed in sand particles, antibacterial silver ions are eluted from the soluble glass by contact with rainwater or underground moisture,
It can prevent the propagation of various bacteria such as Escherichia coli in the sand and can kill roundworm eggs. For this reason, even if an infant playing in the sandbox puts sand in his / her mouth, there is no possibility that health may be impaired. In addition, silver ions are safe for the human body and can maintain their efficacy safely for a long period of about three years.
【００１１】[0011]
【実施例】表１に示す組成からなるP2O5系溶解性ガラス
100 重量部中に、所定量のAg2Oを添加したものを溶融
し、ロールクラッシャーで粉砕したうえ更に丸味加工を
施し、平均的な砂場の砂の粒度分布となるよう分級して
銀含有溶解性ガラスの粒子を得、抗菌効果等につき調べ
た結果、表１に示すとおりの優れた効果が確認できた。EXAMPLES P 2 O 5 -based melting glass having the composition shown in Table 1
100 parts by weight, added a predetermined amount of Ag 2 O, melted, pulverized with a roll crusher, further rounded, classified to have an average sand particle size distribution of sand, and dissolved silver-containing As a result of obtaining particles of the functional glass and examining the antibacterial effect and the like, excellent effects as shown in Table 1 were confirmed.
【００１２】[0012]
【表１】 [Table 1]
【００１３】（試験方法） (1) 高湿下で保管する試験は、得られた銀含有溶解性ガ
ラスを温度３５℃、湿度９５％以上の条件下で３日間放
置して観察した。 (2) Ag+ の溶出量は、420 〜600 μｍの銀含有溶解性ガ
ラスを２０℃の純水に２４時間浸漬して測定した。 (3) 抗菌効果は、銀含有溶解性ガラスを砂に１wt% 混合
したもの５ｇに、105 個/ml の大腸菌を含む1/50普通ブ
イヨン0.5ml を混ぜ、２５℃・２４時間経過後の大腸菌
の減少率を測定した。 (4) 効果の持続性は、銀含有溶解性ガラスを１wt% 混合
した砂をJIS D2050 耐候性試験通則に従い600Hr 想定の
耐候促進後の抗菌効果（３年実施に相当）を測定した。 (5) 溶出液のpHは、Ag+ 溶出液のpH値を測定した。 一方、比較例として表２に示す組成からなるP2O5系の銀
含有溶解性ガラスの粒子を得て同様の試験を行った結果
は表１のとおりであった。なお、比較例１の場合はガラ
ス溶融時において耐火物の侵食が発生していることが確
認できた。(Test Method) (1) In a test of storing under high humidity, the obtained silver-containing soluble glass was left standing for 3 days at a temperature of 35 ° C. and a humidity of 95% or more to observe. (2) The amount of Ag + eluted was determined by immersing a 420-600 μm silver-containing soluble glass in pure water at 20 ° C. for 24 hours. (3) The antibacterial effect was measured by mixing 0.5 ml of 1/50 ordinary broth containing 10 5 cells / ml of Escherichia coli with 5 g of a mixture of 1 wt% of silver-containing glass in sand and 1% by weight of sand. The reduction rate of E. coli was measured. (4) The persistence of the effect was measured by measuring the antibacterial effect (equivalent to three years) after accelerating the weather resistance assuming 600 hours according to the JIS D2050 general rules of weather resistance test for sand mixed with 1 wt% of silver-containing soluble glass. (5) The pH of the eluate was measured by measuring the pH value of the Ag + eluate. Meanwhile, the results of the same test to obtain particles of the silver-containing soluble glass of P 2 O 5 system having the composition shown in Table 2 as comparative examples were as shown in Table 1. In the case of Comparative Example 1, it was confirmed that erosion of the refractory occurred when the glass was melted.
【００１４】[0014]
【表２】 [Table 2]
【００１５】[0015]
【発明の効果】以上の説明からも明らかなように、本発
明は砂場内の大腸菌等の雑菌や回虫卵を減少させること
ができるとともにその効果を長期間にわたって維持する
ことができ、しかも人体にも何ら影響を及ぼす危険性が
なく、更には生産性、保管性等にもすぐれたものであ
る。よって本発明は従来の問題点を一掃した砂場用抗菌
剤として、産業の発展に寄与するところは極めて大であ
る。As is clear from the above description, the present invention can reduce the number of bacteria such as Escherichia coli and roundworm eggs in a sandbox, maintain the effect for a long period of time, and furthermore, the human body There is no danger of affecting any of the above, and further, the productivity, the storage property and the like are excellent. Therefore, the present invention greatly contributes to industrial development as an antibacterial agent for sandboxes that has eliminated the conventional problems.
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ａ０１Ｎ 59:16 59:00） (56)参考文献 特開 平５−271029（ＪＰ，Ａ) 特開 平７−89818（ＪＰ，Ａ) 特開 平７−206566（ＪＰ，Ａ) 特開 平７−300339（ＪＰ，Ａ) 特開 平４−338129（ＪＰ，Ａ) 特開 平６−192021（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) A01N 59/16 A01N 25/08 A01N 59/26 A01N 59/06 A01N 59/16 A01N 59/00 ────────────────────────────────────────────────── (5) Continuation of the front page (51) Int.Cl. 7 Identification code FI A01N 59:16 59:00) (56) References JP-A-5-271029 (JP, A) JP-A-7-89818 (JP) JP-A-7-206566 (JP, A) JP-A-7-300339 (JP, A) JP-A-4-338129 (JP, A) JP-A-6-192021 (JP, A) (58) Field surveyed (Int.Cl. 7 , DB name) A01N 59/16 A01N 25/08 A01N 59/26 A01N 59/06 A01N 59/16 A01N 59/00
Claims (2)
から選択される１種または２種以上：35〜45モル％、K2
O またはNa2O：15モル％以下、Al2O3 ：２〜６モル％、
SiO2：10モル％以下からなる組成のP2O5系溶解性ガラス
に重量％で０．５〜２％のAg2Oを添加した銀含有溶解性
ガラスからなることを特徴とする砂場用抗菌剤。1. A P 2 O 5: 40~60 mol%, CaO, MgO, ZnO
One or more selected from: 35 to 45 mol%, K 2
O or Na 2 O: 15 mol% or less, Al 2 O 3 : 2 to 6 mol%,
SiO 2: for Sand, characterized in that it consists of 10 mol% or less of the composition consisting of P 2 O 5 based soluble glass in weight percent 0.5% to 2% silver-containing soluble glass with the addition of Ag 2 O in Antibacterial agent.
オイルが被覆されていることを特徴とする請求項１に記
載の砂場用抗菌剤。2. The antibacterial agent for sandbox according to claim 1, wherein the surface of the silver-containing glass is coated with silicone oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15099794A JP3021287B2 (en) | 1994-07-01 | 1994-07-01 | Antibacterial agent for sandbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15099794A JP3021287B2 (en) | 1994-07-01 | 1994-07-01 | Antibacterial agent for sandbox |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0812512A JPH0812512A (en) | 1996-01-16 |
| JP3021287B2 true JP3021287B2 (en) | 2000-03-15 |
Family
ID=15509031
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15099794A Expired - Fee Related JP3021287B2 (en) | 1994-07-01 | 1994-07-01 | Antibacterial agent for sandbox |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3021287B2 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9811661D0 (en) * | 1998-06-01 | 1998-07-29 | Giltech Ltd | Compositions |
| US6190643B1 (en) * | 1999-03-02 | 2001-02-20 | Patricia Stoor | Method for reducing the viability of detrimental oral microorganisms in an individual, and for prevention and/or treatment of diseases caused by such microorganisms; and whitening and/or cleaning of an individual's teeth |
| DE60022197T2 (en) * | 1999-06-14 | 2006-03-23 | Imperial College Innovations | SILVERY BIOGLAS COMPOSITIONS DERIVED FROM SOL-GEL STATES |
| JP2001247334A (en) * | 1999-12-28 | 2001-09-11 | Ishizuka Glass Co Ltd | Glass composition for imparting antimicrobial properties and antimicrobial fiber |
| JP2001247333A (en) * | 1999-12-28 | 2001-09-11 | Ishizuka Glass Co Ltd | Glass composition for imparting antimicrobial properties, antimicrobial fiber, antimicrobial spun yarn and antimicrobial fabric |
| JP4293806B2 (en) | 2003-02-28 | 2009-07-08 | 石塚硝子株式会社 | Antibacterial imparting glass composition and antibacterial polymer composite material using the same |
| EP1654013B1 (en) * | 2003-04-09 | 2009-11-11 | Beiersdorf AG | Antimicrobial materials |
-
1994
- 1994-07-01 JP JP15099794A patent/JP3021287B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0812512A (en) | 1996-01-16 |
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