JP3591027B2 - Antifungal layered silicate composition - Google Patents

Antifungal layered silicate composition Download PDF

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Publication number
JP3591027B2
JP3591027B2 JP01983195A JP1983195A JP3591027B2 JP 3591027 B2 JP3591027 B2 JP 3591027B2 JP 01983195 A JP01983195 A JP 01983195A JP 1983195 A JP1983195 A JP 1983195A JP 3591027 B2 JP3591027 B2 JP 3591027B2
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Prior art keywords
layered silicate
antifungal
fungicidal
composition
silicate composition
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JP01983195A
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JPH08193013A (en
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敏郎 蛭川
晃治 杉浦
秀樹 加藤
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Toagosei Co Ltd
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Toagosei Co Ltd
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Description

【0001】
【産業上の利用分野】
本発明は、種々の黴に対して防黴効果を有する新規な防黴性層状ケイ酸塩組成物に関する。更に詳しくは、防黴効果の持続性があり、熱や各種薬品に対して安定であり、ゴム、プラスチックス等及びそれらからなるフィルム、シートなどの成形品、並びに各種繊維、紙、皮革及び塗料等に含有させ、防黴性組成物として使用することができる防黴性層状ケイ酸塩組成物に関するものである。
【0002】
【従来の技術】
従来から無機系の抗菌防黴剤として、銀や銅等の抗菌性を示す金属を活性炭、アパタイト、ゼオライト等に担持させたものが知られている。一方、有機系の抗菌防黴剤としては、塩化ベンザルコニウムや塩化セチルピリジニウム等の第4アンモニウム塩系、2−メチル−イソチアゾリン−3オン等のチアゾール系、エタノールやイソプロパノール等のアルコール系、ホルマリンやグリオキザール等のアルデヒド系、石炭酸、クレゾール或いはキシレノール等のフェノール系、ソルビン酸や安息香酸等のカルボン酸系の防黴剤などが知られている。
【0003】
【発明が解決しようとする課題】
しかしながら、上述した無機系抗菌防黴剤は耐熱性や耐薬品性には優れているものの、細菌類に対する抗菌効果に比べて防黴効果に劣るという問題点がある。また、有機系抗菌防黴剤は一般に耐熱性に乏しいため、プラスチックスや繊維等への練り込み加工に使用すると、変色、発泡等の問題を起こしたり、加工時に揮発、分解を生じ、十分な防黴効果を発揮できるものが殆どなかった。更に、有機系のものは耐薬品性も劣っており、各種溶媒への溶解度が比較的高いため、使用時に溶出を起こし、防黴効果の持続性が低く、人体への影響など安全性にも問題がある等の理由で用途が限定されている。
【0004】
本発明は、この様な従来の問題点に着目してなされたもので、従来の無機系抗菌防黴剤に比べ防黴性を高めるとともに、従来の有機系抗菌防黴剤に比べ耐熱性を高め、且つ耐薬品性、各種溶媒に対する安定性をも向上させ、更に徐放性を持たせたことにより、ゴム、プラスチックス等への混練、混合或いは繊維、紙、皮革等への分散、配合などを可能とし、優れた防黴効果が長期に渡って持続する防黴性組成物を提供することを目的としてなされたものである。
【0005】
【課題を解決するための手段】
本発明者等は、上記の課題を解決するために鋭意検討した結果、特定の有機系防黴剤を特定の無機酸の塩に担持せしめた組成物が、防黴効果だけでなく耐熱性や各種溶媒に対する安定性、及び耐薬品性、更には徐放性等の多くの利点を有することを見出し、この発明に至ったものである。即ち、本発明の防黴性層状ケイ酸塩組成物は、有機系防黴剤として用いた防黴性を有するチアゾール系化合物である1,2−ベンズイソチアゾリン−3−オン、2−n−オクチル−4−イソチアゾリン−3−オン、2−(4−チオシアノメチルチオ)ベンツチアゾール、2−(チオシアノスルホニル)ベンツチアゾール、2−メチル−4−イソチアゾリン−3−オン、及び5−クロロ−2−メチル−4−イソチアゾリン−3−オンの1種又は2種以上を、無機酸の塩として用いた層状ケイ酸塩に担持せしめたことを特徴とするものである。
【0006】
上記「防黴性を有するチアゾール系化合物」としては、具体的には1,2−ベンズイソチアゾリン−3−オン、2−n−オクチル−4−イソチアゾリン−3−オン、2−(4−チオシアノメチルチオ)ベンツチアゾール、2−(チオシアノスルホニル)ベンツチアゾール、2−メチル−4−イソチアゾリン−3−オン及び5−クロロ−2−メチル−4−イソチアゾリン−3−オン等が挙げられる。これら防黴性を有するチアゾール系化合物は、防黴性に加え抗菌性をも併せ持つものであってもよい。また、本発明では、チアゾール系化合物として1種類のみを用いてもよく、2種類以上を併用して層状ケイ酸塩に担持させてもよい。
【0007】
また、上記「層状ケイ酸塩」としては、単位結晶層が互いに積み重なって層状構造をなしているケイ酸塩であれば、特に制限されることなく使用でき、例えば、天然粘土鉱物及び合成層状ケイ酸塩化合物等が挙げられる。天然粘土鉱物はSi4+を中心とする酸素4面体の二次元シートと、Al3+等を中心とする酸素8面体のシートとが1:1或いは2:1で結合し、更にそれらが積み重なって層状構造を構成するものである。
【0008】
天然粘土鉱物の具体例としては、ベントナイト、モンモリロナイト、サポナイト、ヘクトライト、バームキュライト、ハイデライト、カオリナイト、ハロイサイト、アンチロライト、パイロフィライト、タルク、白雲母、黒雲母、金雲母、マ−ガライト、クリントナイト、スド−アイト、セピオライト等が挙げられ、一方、合成層状ケイ酸塩の具体例としては、マガディアイト、ケニヤアイト、サポナイト、ヘクトライト、及びフッ素置換せしめた合成雲母等が挙げられる。
【0009】
本発明で用いられる層状ケイ酸塩の粒径、含水量、陽イオン交換容量、色等は特に制限されないが、ゴムやプラスチックス或いは繊維等への練り込み加工に使用する場合は、粒径10μm以下の粉末が好ましく、更に、粒度分布が狭く、均一な粒径であることがより好ましい。また、防黴性層状ケイ酸塩とした場合に十分な防黴効果が発揮されるために、陽イオン交換容量が0.1meq/g以上であることが好ましい。これらの層状ケイ酸塩は1種類のみを用いてもよいが、徐放性のコントロール等をするために2種類以上を併用することもできる。
【0010】
層状ケイ酸塩に対するチアゾ−ル系化合物の担持量は、防黴性層状ケイ酸塩組成物を100重量%とした場合に、0.01〜30重量%程度、好ましくは1〜25重量%程度であればよく、更に10〜25重量%の範囲であればより好ましい。この担持量が0.01重量%未満では十分な防黴効果が得られず、また、30重量%を越えて多量に担持させようとすると、プラスチックス等に練り込み加工する場合に、変色を起こしたり、徐放性のコントロ−ルが難しくなるため好ましくない。
【0011】
また、層状ケイ酸塩へのチアゾール系化合物の担持は、吸着、イオン交換、含浸及びインターカレート等公知のいずれの方法によっても実施することができる。例えば、イオン交換法では、チアゾール系化合物を溶解性の高い溶媒に溶解し、更にその溶液中に層状ケイ酸塩を添加して振とうし、その後、ろ過し、洗浄することにより、担持されなかったチアゾール系化合物を除去した後、乾燥することによって、チアゾール系化合物が層状ケイ酸塩に担持された防黴性組成物を得ることができる。
【0012】
上記の防黴性組成物の調製条件は特に制限されず、使用するチアゾール系化合物及び層状ケイ酸塩の種類、チアゾール系化合物の担持量等により適宜変化させることができる。具体的には、例えば、溶媒のpHは2〜12、振とう時間は0.5〜72時間、振とう温度は常温から、例えば40〜60℃程度、振とう速度は10〜200回/分であればよい。
【0013】
本発明の防黴性層状ケイ酸塩組成物は、ゴム、プラスチックス等及びそれらからなるフィルム、シート等の成形品、並びに各種繊維、紙、皮革及び塗料等に0.1〜30重量%、好ましくは0.5〜10重量%程度配合し、防黴性組成物として使用することができる。具体的な用途としては、タオル、カ−ペット、カーテン、衣類等の繊維製品、冷蔵庫、洗濯機、食器乾燥器、掃除機、空調機、テレビ、電話機等の電化製品、壁紙、タイル、煉瓦、コンクリート、ネジ、目地等の建築材料、洗面器、歯ブラシ、ほうき、ホース、スリッパ、ごみ箱、タワシ等の日曜雑貨品、まな板、三角コーナー、包丁等の台所用品、トイレタリー用品、各種コーティング剤、塗料及び接着剤などである。
【0014】
また、本発明の防黴性組成物は、組成物調製に使用した水又は有機溶剤等の溶媒に懸濁させたままで、スプレーコーティング、コーターコーティング、ディッピング、刷毛塗り、ロールコーティング等の通常の手段によって、各種金属やプラスチックス、セラミックス等の表面上に塗布し、皮膜を形成することもでき、そのようにしてそれら物品の黴発生を防止することができる。
【0015】
【実施例】
以下、本発明を実施例により詳しく説明する。
(1) 防黴性層状ケイ酸塩組成物の調製
実施例1
チアゾール系化合物として1,2−ベンズイソチアゾリン−3ーオン(以下、BITと略記する。)、層状ケイ酸塩としてナトリウムモンモリロナイトを用いて防黴性組成物を調製した。
イオン交換水100mlに、BITを3ミリモル溶解し、これに更にイオン交換水に対して1重量%のナトリウムモンモリロナイトを加えた後、40℃で48時間恒温振とうした。その後、固相を濾別し、イオン交換水によって洗浄して未反応のBITを除去した。次いで、90℃で乾燥し、ナトリウムモンモリロナイトに20重量%のBITが担持された防黴性層状ケイ酸塩組成物Aを得た。
【0016】
実施例2
層状ケイ酸塩として合成雲母を用いた以外は、実施例1と同様の操作により、合成雲母に20重量%のBITが担持された防黴性層状ケイ酸塩組成物Bを得た。
【0017】
実施例3
チアゾール系化合物として2−n−オクチル−4−イソチアゾリン−3−オン(以下、OITと略記する。)を用いた以外は、実施例1と同様の操作により、ナトリウムモンモリロナイトに20重量%のOITが担持された防黴性層状ケイ酸塩組成物Cを得た。
【0018】
実施例4
チアゾール系化合物としてOITを、層状ケイ酸塩として合成雲母を用いた以外は、実施例1と同様の操作により、合成雲母に20重量%のOITが担持された防黴性層状ケイ酸塩組成物Dを得た。
【0019】
(2) 防黴性層状ケイ酸塩組成物の耐熱性の評価
実験例1
本発明で得られた防黴性層状ケイ酸塩組成物の耐熱性を評価した。評価方法は熱分析により熱減量を伴う吸熱ピークの温度により評価した。また、比較実験例として、BIT,OITそのものについても評価した。結果を表1に示す。
【0020】
【表1】

Figure 0003591027
【0021】
表1の結果によれば、各実施例で吸熱温度の最も低い化合物Dの場合が220℃であるのに対し、BIT及びOITではそれぞれ181℃、170℃となっており、BIT等を層状ケイ酸塩に担持することにより、明らかに耐熱性が向上していることが分かる。
【0022】
(3) 防黴性層状ケイ酸塩組成物の防黴性の評価
実験例2
高密度ポリエチレン(三井石油化学工業株式会社製、グレード名「ハイゼックス2100J」)に、実施例1〜4で調製した防黴性層状ケイ酸塩組成物を1重量%(合計量を100重量%とする。以下同じ。)添加し、熱プレスを用いて加熱温度180℃、加工圧力50kg/cmで厚さ2mmのプレ−トに成形した。また、比較実験例として、本発明の防黴性層状ケイ酸塩組成物に替え、ナトリウムモンモリロナイト及び合成雲母をそれぞれ1重量%、並びにそのものが有機系の防黴剤であるBIT及びOITをそれぞれ0.2重量%、上記ポリエチレンに添加し、同様にしてプレ−トに成形した。
【0023】
次にプレ−トを用いた防黴性の試験方法について説明する。
プレートを2cm角に切ったものを試験片とし、これを50℃の温水中に7日間静置し、1日後及び7日後に防黴性の測定を行い、防黴効果の経時変化を評価した。防黴性の評価方法は、Aspergillus niger (黒麹かび)及びCladosporium cladosporioides(黒かび)の2種類のかび胞子の懸濁液を接種したポテトデキストロ−ス寒天培地上に試験片を乗せ、30℃で1日及び7日間静置培養した後、試験片の端よりその周辺のかびの発育のない領域(発育阻止帯)を観察し、その大きさを測定(実際には試験片端からの発育阻止帯の長さを測定する。)することにより防黴剤の性能を評価した。結果を表2に示す。
【0024】
【表2】
Figure 0003591027
【0025】
表2の結果によれば、各実験例では7日間静置後、一部に1mm程度の阻止帯の長さの変化はあるものの、優れた防黴効果がほぼそのまま維持されているに対し、BIT及びOITでは1日静置後、既に各実験例に比べて明らかに劣った結果となっており、しかも7日間静置後は防黴効果がまったく得られないことが分かる。また、無機系のケイ酸塩のみの場合は、本実験例の評価方法では1日静置後でさえまったく防黴効果が認められない。以上の結果から、本発明の防黴性層状ケイ酸塩組成物は優れた防黴効果を有し、しかもその効果の持続性に優れていることが分かる。
【0026】
【発明の効果】
本発明の防黴性層状ケイ酸組成物は、従来の有機系防黴剤に比べて耐熱性に優れており、高温においてプラスチックス等に混練、混合しても、その防黴効果が失われることがない。また、組成物から防黴成分が徐々に放出されることから、優れた防黴効果が長期間持続される。これらの性能によって本発明の防黴性層状ケイ酸塩組成物は、各種ゴム、プラスチックス等、或いは各種繊維、紙、皮革及び塗料等に混練、混合或いは含有させることにより、防黴性組成物として使用することができる。[0001]
[Industrial applications]
The present invention relates to a novel antifungal layered silicate composition having an antifungal effect against various fungi. More specifically, it has a long-lasting fungicidal effect, is stable against heat and various chemicals, and is made of rubber, plastics, etc., and molded articles such as films and sheets made of them, and various fibers, papers, leathers and paints. The present invention relates to a fungicidal layered silicate composition which can be used as a fungicidal composition by being contained in such a composition.
[0002]
[Prior art]
2. Description of the Related Art As an inorganic antibacterial and fungicide, there has been conventionally known an inorganic antibacterial agent in which a metal having antibacterial properties such as silver or copper is supported on activated carbon, apatite, zeolite or the like. On the other hand, organic antibacterial and antifungal agents include quaternary ammonium salts such as benzalkonium chloride and cetylpyridinium chloride, thiazoles such as 2-methyl-isothiazoline-3-one, alcohols such as ethanol and isopropanol, and formalin. And aldehydes such as glyoxal, phenols such as phenol, cresol and xylenol, and carboxylic acids such as sorbic acid and benzoic acid are known.
[0003]
[Problems to be solved by the invention]
However, although the above-mentioned inorganic antibacterial and antifungal agents are excellent in heat resistance and chemical resistance, there is a problem that the antibacterial effect is inferior to the antibacterial effect against bacteria. In addition, since organic antibacterial and fungicidal agents generally have poor heat resistance, when used for kneading into plastics or fibers, problems such as discoloration and foaming occur, or volatilization and decomposition occur during processing, and sufficient There was hardly any that could exhibit a fungicidal effect. In addition, organic compounds have poor chemical resistance and relatively high solubility in various solvents, so they elute during use, have a low persistence of fungicidal effects, and are safe for humans. Applications are limited due to problems or other reasons.
[0004]
The present invention has been made in view of such conventional problems, and has improved antifungal properties as compared with conventional inorganic antibacterial fungicides, and has improved heat resistance as compared with conventional organic antibacterial fungicides. Kneading and mixing into rubber, plastics, etc. or dispersing and blending into fibers, paper, leather, etc. by increasing chemical resistance, improving stability against various solvents, and giving sustained release. The object of the present invention is to provide a fungicidal composition which enables excellent antifungal effect over a long period of time.
[0005]
[Means for Solving the Problems]
The present inventors have conducted intensive studies in order to solve the above-described problems, and as a result, a composition obtained by supporting a specific organic fungicide on a salt of a specific inorganic acid has not only a fungicidal effect but also heat resistance and The present invention has been found to have many advantages such as stability to various solvents, chemical resistance, and sustained release, and has led to the present invention. That is, the fungicidal layered silicate composition of the present invention is a fungicidal thiazole compound used as an organic fungicide, 1,2-benzisothiazolin-3-one, 2-n-octyl. -4-isothiazolin-3-one, 2- (4-thiocyanomethylthio) benzthiazole, 2- (thiocyanosulfonyl) benzthiazole, 2-methyl-4-isothiazolin-3-one, and 5-chloro-2- One or more kinds of methyl-4-isothiazolin-3- ones are supported on a layered silicate used as a salt of an inorganic acid.
[0006]
Specific examples of the “thiazole compound having fungicidal properties” include 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, 2- (4-thiocyano Methylthio) benzthiazole, 2- (thiocyanosulfonyl) benzthiazole, 2-methyl-4-isothiazolin-3-one and 5-chloro-2-methyl-4-isothiazolin-3-one. These thiazole compounds having antifungal properties may have antibacterial properties in addition to antifungal properties. In the present invention, only one thiazole compound may be used, or two or more thiazole compounds may be supported on the layered silicate in combination.
[0007]
The “layered silicate” can be used without any particular limitation as long as it is a silicate in which unit crystal layers are stacked on each other to form a layered structure, for example, natural clay minerals and synthetic layered silicates. Acid salt compounds and the like. In natural clay minerals, a two-dimensional sheet of oxygen tetrahedron centered on Si 4+ and an octahedral sheet of oxygen centered on Al 3+ or the like are combined at 1: 1 or 2: 1 and further stacked to form a layer. It constitutes the structure.
[0008]
Specific examples of natural clay minerals include bentonite, montmorillonite, saponite, hectorite, balmcurite, hyderite, kaolinite, halloysite, antilolite, pyrophyllite, talc, muscovite, biotite, phlogopite, ma -Gallite, clintonite, sudo-ite, sepiolite and the like, while specific examples of the synthetic layered silicate include magadiite, kenyaite, saponite, hectorite, and fluorine-substituted synthetic mica. .
[0009]
The particle size, water content, cation exchange capacity, color and the like of the layered silicate used in the present invention are not particularly limited, but when used for kneading into rubber, plastics or fibers, the particle size is 10 μm. The following powders are preferred, and more preferably, the particle size distribution is narrow and the particle size is uniform. Further, in order to exhibit a sufficient fungicidal effect when the fungicidal layered silicate is used, the cation exchange capacity is preferably 0.1 meq / g or more. One of these layered silicates may be used alone, but two or more of them may be used in combination for controlling the sustained release.
[0010]
The amount of the thiazole compound supported on the layered silicate is about 0.01 to 30% by weight, preferably about 1 to 25% by weight, when the fungicidal layered silicate composition is 100% by weight. And more preferably in the range of 10 to 25% by weight. If the amount is less than 0.01% by weight, a sufficient fungicidal effect cannot be obtained, and if the amount is more than 30% by weight, discoloration may occur when kneading into plastics or the like. It is not preferable because it causes the control or the control of the sustained release.
[0011]
The loading of the thiazole compound on the layered silicate can be carried out by any known method such as adsorption, ion exchange, impregnation and intercalation. For example, in the ion exchange method, a thiazole-based compound is dissolved in a highly soluble solvent, and a layered silicate is added to the solution, shaken, filtered, washed, and not supported. The thiazole compound is removed and dried to obtain a fungicidal composition in which the thiazole compound is supported on a layered silicate.
[0012]
The conditions for preparing the above-mentioned antifungal composition are not particularly limited, and can be appropriately changed depending on the type of the thiazole compound and the layered silicate used, the amount of the thiazole compound carried, and the like. Specifically, for example, the pH of the solvent is 2 to 12, the shaking time is 0.5 to 72 hours, the shaking temperature is from room temperature, for example, about 40 to 60 ° C., and the shaking speed is 10 to 200 times / min. Should be fine.
[0013]
The fungicidal layered silicate composition of the present invention is used in 0.1 to 30% by weight of rubber, plastics and the like and molded articles such as films and sheets thereof, various fibers, paper, leather and paints. Preferably, about 0.5 to 10% by weight is blended to use as an antifungal composition. Specific applications include textile products such as towels, carpets, curtains, clothing, refrigerators, washing machines, dish dryers, vacuum cleaners, air conditioners, appliances such as televisions and telephones, wallpapers, tiles, bricks, Building materials such as concrete, screws, joints, etc., basins, toothbrushes, brooms, hoses, slippers, recycle bins, sundry goods such as scrubbers, kitchenware such as cutting boards, triangular corners, kitchen knives, toiletry supplies, various coating agents, paints and An adhesive or the like.
[0014]
In addition, the antifungal composition of the present invention may be suspended in a solvent such as water or an organic solvent used in the preparation of the composition, and may be used in a usual manner such as spray coating, coater coating, dipping, brushing, and roll coating. Accordingly, it is also possible to form a film by applying it on the surface of various metals, plastics, ceramics, and the like, and in such a manner, it is possible to prevent the generation of mold on those articles.
[0015]
【Example】
Hereinafter, the present invention will be described in detail with reference to Examples.
(1) Preparation of antifungal layered silicate composition Example 1
A fungicidal composition was prepared using 1,2-benzisothiazolin-3-one (hereinafter abbreviated as BIT) as a thiazole compound and sodium montmorillonite as a layered silicate.
3 mmol of BIT was dissolved in 100 ml of ion-exchanged water, and 1% by weight of sodium montmorillonite with respect to the ion-exchanged water was further added thereto, followed by shaking at 40 ° C. for 48 hours. Thereafter, the solid phase was separated by filtration and washed with ion exchanged water to remove unreacted BIT. Next, it was dried at 90 ° C. to obtain a fungicidal layered silicate composition A in which 20% by weight of BIT was supported on sodium montmorillonite.
[0016]
Example 2
Except for using synthetic mica as the layered silicate, a fungicidal layered silicate composition B in which 20% by weight of BIT was carried on the synthetic mica was obtained in the same manner as in Example 1.
[0017]
Example 3
By the same operation as in Example 1 except that 2-n-octyl-4-isothiazolin-3-one (hereinafter abbreviated as OIT) was used as the thiazole compound, 20% by weight of OIT was added to sodium montmorillonite. A supported mold-resistant layered silicate composition C was obtained.
[0018]
Example 4
The same operation as in Example 1 except that OIT was used as the thiazole compound and synthetic mica was used as the layered silicate. D was obtained.
[0019]
(2) Experimental example 1 of evaluation of heat resistance of a layered silicate composition having antifungal properties
The heat resistance of the antifungal layered silicate composition obtained in the present invention was evaluated. The evaluation method was evaluated by the temperature of the endothermic peak accompanied by the heat loss by thermal analysis. As a comparative example, BIT and OIT were also evaluated. Table 1 shows the results.
[0020]
[Table 1]
Figure 0003591027
[0021]
According to the results shown in Table 1, the temperature of compound D having the lowest endothermic temperature in each example was 220 ° C., whereas that of BIT and OIT was 181 ° C. and 170 ° C., respectively. It can be seen that the heat resistance is clearly improved by supporting on the acid salt.
[0022]
(3) Evaluation Test Example 2 of Fungicide Resistance of Fungicidal Layered Silicate Composition
The high-density polyethylene (manufactured by Mitsui Petrochemical Industry Co., Ltd., grade name “HIZEX 2100J”) was added with 1% by weight of the antifungal layered silicate composition prepared in Examples 1 to 4 (total amount was 100% by weight). The same was applied hereinafter.) And a hot press was used to form a plate having a thickness of 2 mm at a heating temperature of 180 ° C. and a processing pressure of 50 kg / cm 2 . As a comparative example, sodium montmorillonite and synthetic mica were each replaced by 1% by weight of BIT and OIT, each of which was an organic fungicide, in place of the fungicidal layered silicate composition of the present invention. 0.2% by weight was added to the above polyethylene and molded into a plate in the same manner.
[0023]
Next, a test method of the antifungal property using the plate will be described.
A plate cut into a 2 cm square was used as a test piece. The test piece was allowed to stand in warm water at 50 ° C. for 7 days, and after 1 day and 7 days, the antifungal property was measured to evaluate the time-dependent change in the antifungal effect. . To evaluate the antifungal property, a test piece was placed on a potato dextrose agar medium inoculated with a suspension of two mold spores, Aspergillus niger (Koji mold) and Cladosporium cladosporioides (Kuro mold). After culturing at 1 ° C. for 1 day and 7 days, observe the area of the test piece around which no mold has grown (growth inhibition zone) and measure its size (actually, growth from the end of the test piece). The length of the inhibition zone was measured.) To evaluate the performance of the fungicide. Table 2 shows the results.
[0024]
[Table 2]
Figure 0003591027
[0025]
According to the results of Table 2, in each of the experimental examples, after standing for 7 days, although the length of the inhibition zone was partially changed by about 1 mm, the excellent antifungal effect was almost maintained. In the case of BIT and OIT, after standing for one day, the results were already inferior to those of the respective experimental examples, and it was found that no fungicidal effect was obtained at all after standing for 7 days. When only inorganic silicate is used, the evaluation method of this experimental example shows no antifungal effect even after one day of standing. From the above results, it can be seen that the antifungal layered silicate composition of the present invention has an excellent antifungal effect, and also has excellent durability.
[0026]
【The invention's effect】
The antifungal layered silicic acid composition of the present invention has excellent heat resistance as compared with conventional organic antifungal agents, and loses its antifungal effect even when kneaded and mixed with plastics or the like at high temperatures. Nothing. Further, since the antifungal component is gradually released from the composition, an excellent antifungal effect is maintained for a long period of time. Due to these properties, the fungicidal layered silicate composition of the present invention can be kneaded, mixed or contained in various rubbers, plastics, etc., or various fibers, paper, leather, paints, etc., to form a fungicidal composition. Can be used as

Claims (2)

1,2−ベンズイソチアゾリン−3−オン、2−n−オクチル−4−イソチアゾリン−3−オン、2−(4−チオシアノメチルチオ)ベンツチアゾール、2−(チオシアノスルホニル)ベンツチアゾール、2−メチル−4−イソチアゾリン−3−オン、及び5−クロロ−2−メチル−4−イソチアゾリン−3−オンの1種又は2種以上を層状ケイ酸塩に担持させたことを特徴とする防黴性層状ケイ塩組成物。 1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, 2- (4-thiocyanomethylthio) benzthiazole, 2- (thiocyanosulfonyl) benzthiazole, 2-methyl A fungicidal layer comprising one or more of -4-isothiazolin-3-one and 5-chloro-2-methyl-4-isothiazolin-3-one supported on a layered silicate. Silicate composition. 1,2−ベンズイソチアゾリン−3−オン及び/又は2−n−オクチル−4−イソチアゾリン−3−オンを層状ケイ酸塩に担持させたことを特徴とする防黴性層状ケイ塩組成物。 A fungicidal layered silicate composition comprising 1,2-benzisothiazolin-3-one and / or 2-n-octyl-4-isothiazolin-3-one supported on a layered silicate.
JP01983195A 1995-01-11 1995-01-11 Antifungal layered silicate composition Expired - Fee Related JP3591027B2 (en)

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JP4226698B2 (en) * 1998-09-03 2009-02-18 日本エンバイロケミカルズ株式会社 Industrial fungicide
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