JP2004026735A - Anti-mold composition - Google Patents
Anti-mold composition Download PDFInfo
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- JP2004026735A JP2004026735A JP2002186492A JP2002186492A JP2004026735A JP 2004026735 A JP2004026735 A JP 2004026735A JP 2002186492 A JP2002186492 A JP 2002186492A JP 2002186492 A JP2002186492 A JP 2002186492A JP 2004026735 A JP2004026735 A JP 2004026735A
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- antifungal
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- mold
- benzimidazole
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- 0 *C1OC(C[n]2ncnc2)(c(ccc(Cl)c2)c2Cl)OC1 Chemical compound *C1OC(C[n]2ncnc2)(c(ccc(Cl)c2)c2Cl)OC1 0.000 description 2
Abstract
Description
【0001】
【発明の属する技術分野】
本発明は建築物の内外装に使用されるタイルや石材、大型陶板等の板状建材の板間にあって表面に露出している目地材、それもセメント系目地材料に対して、高温多湿環境下でもカビの生育を抑制するための抗カビ組成物に関するものである。
【0002】
【従来の技術及び発明が解決しようとする課題】
建築物の内外装に使用されるタイルや石材、大型陶板等の建材の目地部の材料としてセメント系のものが一般的に使用されているが、例えば浴室のような高温多湿環境下においては、表面にカビが生育し美観の低下や悪臭の発生を招くことがしばしば観察される。
【0003】
そこでセメント系目地材料におけるカビの発生を抑制するために抗カビ剤を配合することが検討されている。この目地材料に使用される抗カビ剤は、施工後の強アルカリ下で安定であることや、例えば浴室などのように水周りに使用される場合には高い耐水性も要求される。
【0004】
一般的な工業材料に使用される抗カビ剤としては、例えば5−クロロ−2−メチル−4−イソチアゾリン−3−オン、2−メチル−4−イソチアゾリン−3−オン、1,2−ベンズイソチアゾリン−3−オン、N−n−ブチル−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、4,5−ジクロロ−2−n−オクチル−4−イソチアゾリン−3−オン、2−メチル−4,5−トリメチレン−4−イソチアゾリン−3−オンなどのイソチアゾリン系化合物、2−ブロモ−2−ニトロプロパン−1,3−ジオール、2,2−ジブロモ−2−ニトロエタノール、2,2−ジブロモ−3−ニトリロプロピオンアミド、1,2−ジブロモ−2,4−ジシアノブタン、ヘキサブロモジメチルスルホンなどの有機臭素系化合物、ホルムアルデヒド、グルタルアルデヒド、o−フタルアルデヒドなどのアルデヒド系化合物、3−メチル−4−イソプロピルフェノール、2−イソプロピル−5−メチルフェノール、o−フェニルフェノール、4−クロロ−3,5−ジメチルフェノール、2,4,4’−トリクロロ−2’−ヒドロキシジフェニルエーテル、4,4’−ジクロロ−2’−ヒドロキシジフェニルエーテルなどのフェノール系化合物、8−オキシキノリン、2,3,5,6−テトラクロロ−4−(メチルスルホニル)ピリジン、ビス(2−ピリジルチオ−1−オキシド)亜鉛、(2−ピリジルチオ−1−オキシド)ナトリウムなどのピリジン系化合物、N,N’,N’’−トリスヒドロキシエチルヘキサヒドロ−S−トリアジン、N,N’,N’’−トリスエチルヘキサヒドロ−S−トリアジンなどのトリアジン系化合物、3,4,4’−トリクロロカルバニリド、3−トリフルオロメチル−4,4’−ジクロロカルバニリドなどのアニリド系化合物、2−(チオシアノメチルチオ)ベンズチアゾールなどのチアゾール系化合物、2−(4’−チアゾリル)ベンズイミダゾール、2−ベンズイミダゾールカルバミン酸メチルなどのイミダゾール系化合物、2,4,5,6−テトラクロロイソフタロニトリル、5−クロロ−2,4,6−トリフルオロイソフタロニトリルなどのニトリル系化合物、4,5−ジクロロ−1,2−ジチオラン−3−オン、3,3,4,4−テトラクロロテトラヒドロチオフェン−1,1−ジオキシドなどの有機塩素系化合物、3−ヨード−2−プロピニルブチルカーバメート、ジヨードメチル−p−トリルスルホン、2,3,3−トリヨードアリルアルコール、p−クロロフェニル−3−ヨードプロパギルフォルマールなどの有機ヨード系化合物などが挙げられる。
【0005】
これら一般的な工業材料に使用される抗カビ剤のうち、多くのものは強アルカリ下での安定性に問題があったり持続性に乏しいという問題があり、セメントのような土木建築用材料に対しては適当ではない。
【0006】
強アルカリ下で安定性にすぐれ抗カビ性を有するものとして、特許3223520号の2,3,3−トリヨードアリルアルコールや、特許2586247号のジヨードメチル−p−トリルスルホンや3−ヨード−2−プロピニルブチルカーバメートなどの有機ヨード系化合物が提案されている。しかしこれら有機ヨード系化合物は、経時変化によって遊離ヨードが生じることによる着色の問題や、持続性の問題があった。特許第3146278号には、α−[2−(4−クロロフェニル)エチル]−α−(1,1−ジメチルエチル)−1H−1,2,4−トリアゾール−1−エタノールなどの有機窒素ハロゲン系化合物が提案されている。しかし、この有機窒素ハロゲン化合物は、変色や持続性の問題は少ないものの初期の抗カビ性がやや弱く、充分な抗カビ性を得るためには添加量が増えコストが割高になるという問題があった。
【0007】
【課題を解決するための手段】
本発明者はこのような課題を解決するため鋭意研究した結果、セメント系目地材料に対して、下記の一般式(1)で示される特定の化合物、または一般式(1)で示される特定の化合物と2−(4’−チアゾリル)ベンズイミダゾールを含む抗カビ組成物を配合することで、変色等がなく長期にわたって安定で、高い抗カビ性とその持続性にすぐれること見出し本発明に至った。
一般式(1)
(式中、Rは水素原子もしくは炭素数1から4までの直鎖または分枝状のアルキル基を表す)
【0008】
一般式(1)で示される化合物として、Rがn−プロピル基である1−[[2−(2,4−ジクロロフェニル)−4−n−プロピル−1,3−ジオキソラン−2−イル]メチル]−1H−1,2,4−トリアゾールが好ましい。
【0009】
【発明の実施の形態】
本発明における抗カビ組成物が添加されるセメント系目地材料を使用する建材としては、陶磁器質タイル、大型陶板、セラミックタイル、石材、レンガなどが挙げられるが、これらの用途に限定されるものではない。また、大きさや形状についてもとくに制約があるわけではない。
【0010】
これらのセメント系目地材料は一般的に強アルカリ性を示すが、本発明の抗カビ組成物である下記の一般式(1)で示される特定の化合物、または一般式(1)で示される特定の化合物と2−(4’−チアゾリル)ベンズイミダゾールを含む抗カビ組成物は、強アルカリ下でも安定であり長期間にわたり抗カビ効果を持続する。
一般式(1)
(式中、Rは水素原子もしくは炭素数1から4までの直鎖または分枝状のアルキル基を表す)
【0011】
一般式(1)で示される化合物として、Rがn−プロピル基である1−[[2−(2,4−ジクロロフェニル)−4−n−プロピル−1,3−ジオキソラン−2−イル]メチル]−1H−1,2,4−トリアゾールが好ましい。
【0012】
本発明の抗カビ組成物は、一般式(1)で示される特定の化合物、または一般式(1)で示される特定の化合物と2−(4’−チアゾリル)ベンズイミダゾールを含む組成物をそのまま使用することもできるが、例えば、液剤、懸濁剤、粉剤、粒剤、水和剤などの公知の剤型に製剤化することによりセメント等の土木建築用材料に添加することもできる。通常この土木建築用材料は粉体で流通しており、施工時に水を加えて混錬するため土木建築用材料にあらかじめ混合しておくことを考えると粉剤に製剤化することが好ましい。
【0013】
粉剤として製剤する場合には、一般式(1)で表される特定の化合物が粉体であればそのまま使用することが可能であるが、一般式(1)のうちRの炭素数が大きくなると常温で液体となるため粉体化する必要がある場合には、例えばシリカのような公知の無機物質に担持させて粉体化することができる。このときの無機物質の量は一般式(1)で表される特定の化合物が担持されるに足りる量であれば差し支えなく、無機物質の種類およびその量については特に制限されない。
【0014】
本発明の抗カビ組成物には、一般式(1)で示される特定の化合物を含む組成物、または一般式(1)で示される特定の化合物と2−(4’−チアゾリル)ベンズイミダゾールを含む組成物には、必要に応じて、増量剤、溶剤、紫外線吸収剤、撥水剤、滑剤などを配合することも可能である。
【0015】
本発明における一般式(1)で示される特定の化合物に、2−(4’−チアゾリル)ベンズイミダゾールを含む場合の配合比率は任意の割合で実施できるが、2−(4’−チアゾリル)ベンズイミダゾールが90重量%以下であることが好ましい。2−(4’−チアゾリル)ベンズイミダゾールの配合比率が90重量%を超えると、この化合物の抗カビスペクトルに偏りがあるため十分な抗カビ性を発揮できずカビが生育したり、セメント系目地材料が変色したり、持続性が低下する場合がある。
【0016】
本発明の抗カビ組成物の、セメント系目地材料への添加濃度は、0.001〜3重量%であり、好ましくは0.01〜1重量%である。この濃度未満では充分な抗カビ性を得ることができず、この濃度を超えると充分な抗カビ性は得られるもののコストがかかり過ぎて現実的ではない。
【0017】
【実施例】
本発明を実施例、試験例により詳しく説明するが、本発明がこれらによって限定されるものではない。以下に示した配合比率はすべて重量%である。
【0018】
実施例1〜4、比較例1〜4の抗カビ組成物を表1に示した。なお表中のTBZは2−(4’−チアゾリル)ベンズイミダゾールの略称であり、IPBCは3−ヨード−2−プロピニルブチルカーバメートの略称であり、テブコナゾールはα−[2−(4−クロロフェニル)エチル]−α−(1,1−ジメチルエチル)−1H−1,2,4−トリアゾール−1−エタノールの略称であり、BCMは2−ベンズイミダゾールカルバミン酸メチルの略称である。
【0019】
【表1】
*1) カープレックスXR(沈降性シリカ、塩野義製薬株式会社製)
【0020】
試験例1(試料の調製)
実施例1〜4、比較例1〜4の各抗カビ組成物を、白色の普通ポルトランドセメント40重量%、アルカリ金属ケイ酸塩水溶液(二酸化ケイ素 20%、酸化カリウム 25%、水 55%からなる水溶液) 25重量%、炭酸カルシウム20重量%、酸化チタン粉末 7%、タルク 1重量%、珪砂 5重量%、アクリル酸エステル粉末 2重量%の割合で混合したものに添加し、直径約30mm、厚さ約5mmの円盤形状に成形してデシケーターに入れ、このデシケーターを30℃の恒温槽に3日間放置して養生・固化させた。固化後、デシケーター内の空気を二酸化炭素に置換することで、試料の強アルカリを中和した。
【0021】
試験例2(耐水試験)
抗カビ剤の持続性を確認するために、試験例1で調製した試料を90℃の温水中に16時間浸漬することで耐水試験とした。この耐水試験は養生・固化後に行い、耐水試験試験の後に二酸化炭素による中和処理を行った。
【0022】
試験例3(抗カビ性試験)
オートクレーブで滅菌したポテトデキストロース寒天培地の溶解物15mlを、直径90mmの滅菌シャーレに流しポテトデキストロース寒天平板培地を調製した。この平板培地の中央に、試験例1で調製した試料と、これを試験例2で耐水試験を行い、この耐水試験後に中和処理を行った試料それぞれを置き、この上から5種類のカビの混合胞子懸濁液(Aspergillus niger IFO 6342、Penicillium funiculosum IFO 6352、Cladosporium cladosporioides IFO 6348、Aureobasidium pullulans IFO 6353、Alternaria alternata IFO 31805)を振りかけ26℃で培養して経時的に試料上のカビの生育状況を観察した。なお、カビの胞子懸濁液には、グルコースとポリペプトンをそれぞれ1%溶解させたものを用いた。
【0023】
抗カビ性試験の結果を表2に示す。判定基準は次の通りである。この結果からわかるように、実施例の抗カビ組成物は、耐水試験後も含めて良好な抗カビ活性を示した。これに対して、比較例1、3、4は抗カビスペクトルの問題から充分な抗カビ性が認められず、比較例2は初期の抗カビ性にはすぐれるものの耐水試験後の持続性が認めらなかった。
0:試料上にカビの生育が認められない。
1:試料上のカビの生育面積は1/3を超えない。
2:試料上のカビの生育面積は1/3を超える。
【0024】
【表2】
【0025】
試験例4(変色試験)
試験例1で養生・固化させた試料に、市販の塩素系漂白剤(カビキラー、ジョンソン株式会社製)もしくは中性洗剤(バスマジックリン、花王株式会社製)を塗布して1時間放置後、充分水洗したときの試料の変色程度を観察した。
【0026】
変色試験の結果を表3に示す。判定基準は次の通りである。この結果からわかるように、実施例の抗カビ組成物は、塩素系漂白剤、中性洗剤ともに変色はほとんど認められなかった。
○:試料の表面はほとんど変色が認められない。
×:試料の表面は明らかな変色が認められる。
【0027】
【表3】
【0028】
【発明の効果】
以上述べたように本発明の抗カビ組成物をセメント系目地材料に添加することにより、変色の懸念が少なく初期効果および持続性にすぐれた抗カビ性を付与することができる。したがって、この材料の表面にカビが生育し美観の低下や悪臭発生を回避することが長期間にわたって可能である。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a joint material that is exposed between surfaces of a plate-like building material such as a tile and a stone material, a large porcelain plate used for the interior and exterior of a building, and also a cement-based joint material under a high-temperature and high-humidity environment. However, the present invention relates to an antifungal composition for suppressing the growth of mold.
[0002]
Problems to be solved by the prior art and the invention
As a material for joints of building materials such as tiles and stones used for the interior and exterior of buildings, large ceramic plates, etc., cement-based materials are generally used, for example, in a high-temperature and high-humidity environment such as a bathroom, It is often observed that mold grows on the surface, leading to deterioration of aesthetic appearance and generation of offensive odor.
[0003]
Therefore, it has been studied to add an antifungal agent in order to suppress the occurrence of mold in the cement joint material. The antifungal agent used for this joint material is required to be stable under strong alkali after construction, and to have high water resistance when used around water such as a bathroom.
[0004]
Examples of antifungal agents used for general industrial materials include 5-chloro-2-methyl-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one and 1,2-benzisothiazoline -3-one, Nn-butyl-1,2-benzisothiazolin-3-one, 2-n-octyl-4-isothiazolin-3-one, 4,5-dichloro-2-n-octyl-4- Isothiazoline-based compounds such as isothiazolin-3-one, 2-methyl-4,5-trimethylene-4-isothiazolin-3-one, 2-bromo-2-nitropropane-1,3-diol, 2,2-dibromo- Such as 2-nitroethanol, 2,2-dibromo-3-nitrilopropionamide, 1,2-dibromo-2,4-dicyanobutane, hexabromodimethylsulfone, etc. Bromine compounds, aldehyde compounds such as formaldehyde, glutaraldehyde, o-phthalaldehyde, 3-methyl-4-isopropylphenol, 2-isopropyl-5-methylphenol, o-phenylphenol, 4-chloro-3,5- Phenolic compounds such as dimethylphenol, 2,4,4'-trichloro-2'-hydroxydiphenylether, 4,4'-dichloro-2'-hydroxydiphenylether, 8-oxyquinoline, 2,3,5,6-tetra Pyridine compounds such as chloro-4- (methylsulfonyl) pyridine, bis (2-pyridylthio-1-oxide) zinc, sodium (2-pyridylthio-1-oxide), N, N ′, N ″ -trishydroxyethyl Hexahydro-S-triazine, N, N ′, N ″ -triethyl Triazine compounds such as hexahydro-S-triazine, anilide compounds such as 3,4,4′-trichlorocarbanilide and 3-trifluoromethyl-4,4′-dichlorocarbanilide, 2- (thiocyanomethylthio) ) Thiazole compounds such as benzthiazole, imidazole compounds such as 2- (4′-thiazolyl) benzimidazole, methyl 2-benzimidazolecarbamate, 2,4,5,6-tetrachloroisophthalonitrile, 5-chloro Nitrile compounds such as -2,4,6-trifluoroisophthalonitrile, 4,5-dichloro-1,2-dithiolan-3-one, 3,3,4,4-tetrachlorotetrahydrothiophene-1,1 Organic chlorine compounds such as -dioxide, 3-iodo-2-propynylbutylcarbamate, Domechiru -p- tolyl sulfone, 2,3,3-triiodo allyl alcohol, and organic iodine compounds such as p- chlorophenyl-3-iodopropargyl formal and the like.
[0005]
Of these antifungal agents used for general industrial materials, many have problems in stability under strong alkali or poor sustainability. Not suitable for.
[0006]
As those having excellent stability and antifungal property under a strong alkali, 2,3,3-triiodoallyl alcohol disclosed in Japanese Patent No. 3223520, diiodomethyl-p-tolylsulfone and 3-iodo-2-propynyl disclosed in Japanese Patent No. 2586247 are disclosed. Organic iodine compounds such as butyl carbamate have been proposed. However, these organic iodine-based compounds have a problem of coloring due to generation of free iodine due to aging and a problem of persistence. Japanese Patent No. 3146278 discloses an organic nitrogen-based halogen such as α- [2- (4-chlorophenyl) ethyl] -α- (1,1-dimethylethyl) -1H-1,2,4-triazole-1-ethanol. Compounds have been proposed. However, this organic nitrogen halide compound has little problem of discoloration and persistence, but has a slightly weak initial antifungal property, and has a problem that the addition amount increases and the cost becomes high in order to obtain sufficient antifungal property. Was.
[0007]
[Means for Solving the Problems]
The present inventor has conducted intensive studies to solve such problems, and as a result, a specific compound represented by the following general formula (1) or a specific compound represented by the following general formula (1) was applied to a cement joint material. By blending an antifungal composition containing the compound and 2- (4′-thiazolyl) benzimidazole, the composition is stable over a long period of time without discoloration or the like, and has excellent antifungal properties and excellent persistence. Was.
General formula (1)
(Wherein, R represents a hydrogen atom or a linear or branched alkyl group having 1 to 4 carbon atoms)
[0008]
As the compound represented by the general formula (1), 1-[[2- (2,4-dichlorophenyl) -4-n-propyl-1,3-dioxolan-2-yl] methyl wherein R is an n-propyl group ] -1H-1,2,4-triazole is preferred.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Examples of building materials using the cement-based joint material to which the antifungal composition of the present invention is added include ceramic tiles, large ceramic plates, ceramic tiles, stone materials, bricks, and the like, but are not limited to these applications. Absent. In addition, there is no particular restriction on the size and shape.
[0010]
These cement-based joint materials generally show strong alkalinity, but are specific compounds represented by the following general formula (1) or specific compounds represented by the following general formula (1), which are the antifungal composition of the present invention. The antifungal composition containing the compound and 2- (4′-thiazolyl) benzimidazole is stable even under a strong alkali and maintains an antifungal effect for a long period of time.
General formula (1)
(Wherein, R represents a hydrogen atom or a linear or branched alkyl group having 1 to 4 carbon atoms)
[0011]
As the compound represented by the general formula (1), 1-[[2- (2,4-dichlorophenyl) -4-n-propyl-1,3-dioxolan-2-yl] methyl wherein R is an n-propyl group ] -1H-1,2,4-triazole is preferred.
[0012]
The antifungal composition of the present invention comprises a specific compound represented by the general formula (1) or a composition containing the specific compound represented by the general formula (1) and 2- (4′-thiazolyl) benzimidazole as it is. Although it can be used, for example, it can be added to a material for civil engineering and construction such as cement by formulating it into a known dosage form such as a liquid, suspension, powder, granule, wettable powder and the like. Usually, this material for civil engineering and construction is distributed in the form of powder, and it is preferable to formulate it into a powder in consideration of mixing in advance with the material for civil engineering and construction in order to add and knead water during construction.
[0013]
When formulated as a powder, if the specific compound represented by the general formula (1) is a powder, it can be used as it is, but if the carbon number of R in the general formula (1) is large, When it is necessary to form a powder because it becomes a liquid at ordinary temperature, it can be made into a powder by supporting it on a known inorganic substance such as silica. At this time, the amount of the inorganic substance is not particularly limited as long as the specific compound represented by the general formula (1) is supported, and the kind and the amount of the inorganic substance are not particularly limited.
[0014]
The antifungal composition of the present invention includes a composition containing a specific compound represented by the general formula (1) or a specific compound represented by the general formula (1) and 2- (4′-thiazolyl) benzimidazole. If necessary, a bulking agent, a solvent, an ultraviolet absorber, a water repellent, a lubricant, and the like can be added to the composition containing the composition.
[0015]
When the specific compound represented by the general formula (1) in the present invention contains 2- (4′-thiazolyl) benzimidazole, the compound can be mixed at an arbitrary ratio, but 2- (4′-thiazolyl) benzimidazole can be used. It is preferable that the imidazole is 90% by weight or less. If the compounding ratio of 2- (4′-thiazolyl) benzimidazole exceeds 90% by weight, the antifungal spectrum of this compound is biased, so that sufficient antifungal properties cannot be exhibited, molds grow, and cement-based joints grow. The material may be discolored or its durability may be reduced.
[0016]
The concentration of the antifungal composition of the present invention added to the cement-based joint material is 0.001 to 3% by weight, preferably 0.01 to 1% by weight. If the concentration is lower than this, sufficient antifungal properties cannot be obtained, and if the concentration exceeds this level, sufficient antifungal properties can be obtained, but the cost is too high and it is not practical.
[0017]
【Example】
The present invention will be described in more detail with reference to examples and test examples, but the present invention is not limited to these examples. All the compounding ratios shown below are% by weight.
[0018]
Table 1 shows the antifungal compositions of Examples 1 to 4 and Comparative Examples 1 to 4. In the table, TBZ is an abbreviation for 2- (4'-thiazolyl) benzimidazole, IPBC is an abbreviation for 3-iodo-2-propynylbutylcarbamate, and tebuconazole is α- [2- (4-chlorophenyl) ethyl. ] -Α- (1,1-dimethylethyl) -1H-1,2,4-triazole-1-ethanol, and BCM is an abbreviation for methyl 2-benzimidazolecarbamate.
[0019]
[Table 1]
* 1) Carplex XR (precipitable silica, manufactured by Shionogi & Co., Ltd.)
[0020]
Test Example 1 (Sample preparation)
Each of the antifungal compositions of Examples 1 to 4 and Comparative Examples 1 to 4 was composed of 40% by weight of white ordinary Portland cement, an aqueous solution of an alkali metal silicate (silicon dioxide 20%, potassium oxide 25%, water 55%). Aqueous solution) 25% by weight, 20% by weight of calcium carbonate, 7% of titanium oxide powder, 1% by weight of talc, 5% by weight of silica sand, 2% by weight of acrylate powder were added to a mixture, and the diameter was about 30 mm, and the thickness was about 30 mm. It was formed into a disc shape having a thickness of about 5 mm, placed in a desiccator, and the desiccator was left in a thermostat at 30 ° C. for 3 days to cure and solidify. After solidification, the air in the desiccator was replaced with carbon dioxide to neutralize the strong alkali of the sample.
[0021]
Test example 2 (water resistance test)
In order to confirm the durability of the antifungal agent, a water resistance test was performed by immersing the sample prepared in Test Example 1 in warm water at 90 ° C. for 16 hours. This water resistance test was performed after curing and solidification, and a neutralization treatment with carbon dioxide was performed after the water resistance test.
[0022]
Test Example 3 (Anti-mold test)
A potato dextrose agar plate medium was prepared by flowing 15 ml of a potato dextrose agar solution sterilized by an autoclave into a sterile petri dish having a diameter of 90 mm. In the center of the plate medium, the sample prepared in Test Example 1 and the sample subjected to the water resistance test in Test Example 2 and subjected to the neutralization treatment after the water resistance test were placed. Mixed spore suspension (Aspergillus niger IFO 6342, Penicillium funiculosum IFO 6352, Cladosporium cladosporoides IFO 6348, and culture on Aureobasidium pulans). Observed. The mold spore suspension used was one in which glucose and polypeptone were each dissolved at 1%.
[0023]
Table 2 shows the results of the antifungal test. The criteria are as follows. As can be seen from the results, the antifungal compositions of the examples exhibited good antifungal activity even after the water resistance test. In contrast, Comparative Examples 1, 3, and 4 did not have sufficient antifungal properties due to the problem of the antifungal spectrum, and Comparative Example 2 had excellent initial antifungal properties, but persistence after the water resistance test. Did not accept.
0: No mold growth was observed on the sample.
1: The growth area of the mold on the sample does not exceed 1/3.
2: The growth area of the mold on the sample exceeds 1/3.
[0024]
[Table 2]
[0025]
Test Example 4 (Discoloration test)
A commercially available chlorine-based bleach (mold killer, manufactured by Johnson Co., Ltd.) or a neutral detergent (bath magic phosphorus, manufactured by Kao Co., Ltd.) was applied to the sample cured and solidified in Test Example 1 and allowed to stand for 1 hour. The degree of discoloration of the sample when washed with water was observed.
[0026]
Table 3 shows the results of the discoloration test. The criteria are as follows. As can be seen from the results, the antifungal compositions of the examples showed almost no discoloration of both the chlorine bleach and the neutral detergent.
:: Almost no discoloration was observed on the surface of the sample.
X: Clear discoloration is observed on the surface of the sample.
[0027]
[Table 3]
[0028]
【The invention's effect】
As described above, by adding the antifungal composition of the present invention to a cement-based joint material, it is possible to impart antifungal properties with little initial discoloration and excellent durability and durability. Therefore, it is possible to prevent mold from growing on the surface of the material and to prevent deterioration of aesthetic appearance and generation of offensive odor over a long period of time.
Claims (5)
(式中、Rは水素原子もしくは炭素数1から4までの直鎖または分枝状のアルキル基を表す)で示される化合物からなることを特徴とするセメント系目地材料用抗カビ組成物。General formula (1)
(Wherein, R represents a hydrogen atom or a linear or branched alkyl group having 1 to 4 carbon atoms). An antifungal composition for cement-based joint material, comprising:
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JP2009096754A (en) * | 2007-10-17 | 2009-05-07 | Sumika Enviro-Science Co Ltd | Industrial antifungal composition |
JP2014101325A (en) * | 2012-11-21 | 2014-06-05 | Japan Enviro Chemicals Ltd | Industrial antiseptic and/or antifungal agent |
JP2015221828A (en) * | 2015-08-26 | 2015-12-10 | ロンザジャパン株式会社 | Lumber mildewproof composition |
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JP2009096754A (en) * | 2007-10-17 | 2009-05-07 | Sumika Enviro-Science Co Ltd | Industrial antifungal composition |
JP2014101325A (en) * | 2012-11-21 | 2014-06-05 | Japan Enviro Chemicals Ltd | Industrial antiseptic and/or antifungal agent |
JP2015221828A (en) * | 2015-08-26 | 2015-12-10 | ロンザジャパン株式会社 | Lumber mildewproof composition |
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