JP2004099528A - Antimicrobial agent composition - Google Patents
Antimicrobial agent composition Download PDFInfo
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- JP2004099528A JP2004099528A JP2002264033A JP2002264033A JP2004099528A JP 2004099528 A JP2004099528 A JP 2004099528A JP 2002264033 A JP2002264033 A JP 2002264033A JP 2002264033 A JP2002264033 A JP 2002264033A JP 2004099528 A JP2004099528 A JP 2004099528A
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- antimicrobial
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- 239000000203 mixture Substances 0.000 title claims abstract description 72
- 239000004599 antimicrobial Substances 0.000 title abstract description 29
- 150000001875 compounds Chemical class 0.000 claims abstract description 48
- 230000000845 anti-microbial effect Effects 0.000 claims abstract description 45
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Landscapes
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Abstract
Description
【0001】
【発明が属する技術分野】
本発明は工業用途に有用な抗微生物剤組成物に関する。より詳細には、1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと、ポリ(ヘキサメチレンビグアニド)塩酸塩、1,2−ビス(ブロモアセトキシ)エタン、1,4−ビス(ブロモアセトキシ)−2−ブテンからなる群より選ばれる少なくとも1種の化合物とを組み合わせることにより、これらの化合物の相乗効果を有する抗微生物剤組成物に関する。
【0002】
【従来の技術】
従来から、工業製品または工業用原材料の抗微生物剤として、主として水銀、錫、銅などの重金属を含有する無機化合物または有機化合物(以下、「重金属化合物」という)が広く用いられている。しかし、これらの重金属化合物は毒性が強いため、人体に悪影響を及ぼす危険性がある。さらに、重金属化合物は環境破壊につながる恐れを有するため、重金属化合物を抗微生物剤として使用することは適切ではない。
【0003】
このような重金属化合物の問題点を解決するために開発された多くの非金属系抗微生物剤(例えば、有機ヨウ素系化合物、ニトリル系化合物、イソチアゾロン系化合物、ベンズイミダゾール系化合物、ピリチオン系化合物)については、その抗菌スペクトルに選択性がある。このため、これらの非金属系抗微生物剤を、工業製品または工業用原材料、特に有機材料(例えば、繊維、塗料、糊剤など)に適用しても、これら抗微生物剤が効力を奏しない、あるいは奏しにくい微生物が発育、繁殖するため、工業製品などの汚染、あるいは工業用原材料の変質(例えば、劣化)が生じる。従って、従来の抗微生物剤組成物によっては、満足すべき抗微生物効果が得られない。
【0004】
このため、2種類以上の抗微生物剤を組み合わせることにより、抗菌スペクトルを広げること、抗微生物作用を増大させることなどが試みられている。しかし、通常は1種類のみの抗微生物剤の効果の発現に留まるか、あるいは相加平均的な効果しか得られない。
【0005】
【発明が解決しようとする課題】
本発明は上記課題を解決するものであり、その目的とするところは、安全性が高く、効力が高く、さらに広い抗菌スペクトルを有する抗微生物剤組成物を提供することである。
【0006】
【課題を解決するための手段】
本発明者らは、上記課題を解決するため、鋭意検討した結果、1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと、次の(a)〜(c)の化合物:(a)ポリ(ヘキサメチレンビグアニド)塩酸塩、(b)1,2−ビス(ブロモアセトキシ)エタン、および(c)1,4−ビス(ブロモアセトキシ)−2−ブテンからなる群より選ばれる少なくとも1種の化合物との組み合わせにより、予期せぬ相乗効果が得られることを見出した。つまり、1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと、上記(a)〜(c)の化合物からなる群より選ばれる化合物との組み合わせにより、各化合物を単独で用いた場合よりも効力が増強され、さらに抗菌スペクトルが広い抗微生物剤組成物が得られることを見出し、本発明を完成するに至った。
【0007】
本発明によれば、1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと、次の(a)〜(c)の化合物:(a)ポリ(ヘキサメチレンビグアニド)塩酸塩、(b)1,2−ビス(ブロモアセトキシ)エタン、および(c)1,4−ビス(ブロモアセトキシ)−2−ブテンからなる群より選ばれる少なくとも1種とを含有する抗微生物剤組成物が提供される。
【0008】
また、本発明によれば、細菌、真菌または藻類の増殖を抑制するかまたは死滅させるための、上記の組成物が提供される。
【0009】
好ましくは、上記1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと、選択された上記化合物との重量比は、20:1〜1:20の範囲である。さらに好ましくは、上記1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと、選択された上記化合物との重量比は、5:1〜1:5の範囲である。
【0010】
【発明の実施の形態】
本明細書において用いられる用語「抗微生物剤組成物」とは、細菌、真菌、藻類などの微生物の増殖を抑制するか、またはこれらの微生物を死滅させる効果を有する組成物を意味する。ここで、「微生物の増殖を抑制する」とは、抗微生物剤組成物を含まない状態、すなわちコントロールと比較し、微生物の増殖の程度がより少ないか、または微生物が全く増殖しないことをいう。
【0011】
A.抗微生物剤組成物の構成
A.1.有効成分
本発明の抗微生物剤組成物は、1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと、次の(a)〜(c)の化合物:(a)ポリ(ヘキサメチレンビグアニド)塩酸塩、(b)1,2−ビス(ブロモアセトキシ)エタン、および(c)1,4−ビス(ブロモアセトキシ)−2−ブテンからなる群より選ばれる少なくとも1種の化合物とを有効成分として含有する。
【0012】
1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンは、例えば、特許公報2852289号に記載の方法により合成され得る。
【0013】
ポリ(ヘキサメチレンビグアニド)塩酸塩は、例えば、英国特許702268号に記載の方法により合成され得る。
【0014】
1,2−ビス(ブロモアセトキシ)エタンおよび1,4−ビス(ブロモアセトキシ)−2−ブテンは、例えば、特公昭58−26737号公報に記載の方法により合成され得る。
【0015】
抗微生物剤組成物中の1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと、(a)〜(c)の化合物からなる群より選ばれる化合物との割合は、対象となる微生物の種類ならびに上記組成物を抗微生物剤として使用する条件などに依存して適切に選択され得る。通常、1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと、(a)〜(c)の化合物との割合は、重量比で20:1〜1:20、好ましくは5:1〜1:5、特に好ましくは3:1〜1:3の範囲である。
【0016】
なお、(a)〜(c)の化合物のうちの複数種が使用される場合は、それらの合計重量に基づいて上記好ましい配合比が計算される。
【0017】
本発明の抗微生物剤組成物は使用目的に応じた形態で使用され得る。例えば、本発明の抗微生物剤組成物は単に1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと、(a)〜(c)の化合物からなる群より選べる化合物とを混合したものであってもよいが、好ましくは1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンおよび(a)〜(c)の化合物からなる群より選ばれる化合物の他に適切な溶媒および分散剤または担体またはその他の成分を含有し得る。
【0018】
本発明の組成物中の1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと、(a)〜(c)の化合物からなる群より選ばれる化合物との総含有量は、その剤型および使用目的などによっても異なるが、通常、得られる抗微生物剤組成物全体の0.1重量%〜95重量%であり、好ましくは0.2重量%〜60重量%である。
【0019】
また、本発明の抗微生物剤組成物の使用量は、組成物および対象となる微生物の種類やその濃度によっても異なるが、一般的に、繊維、塗料、接着剤などに使用する場合は、1mg/kg〜10g/kg程度で良好な効果が得られる。
【0020】
A.2.溶媒および分散剤
対象となる系が各種工業用水系の場合には、有効成分の溶解、分散性などを考慮して、後述するように、溶媒および分散剤を含有する液剤を調製することが好ましい。
【0021】
本発明の抗微生物剤組成物に用いられ得る溶媒としては、有効成分に悪影響を与えない任意の溶媒、例えば、水、アルコール類(例えば、メチルアルコール、エチルアルコール、エチレングリコール、プロピレングリコール、ジエチレングリコール、グリセリンなど)、ケトン類(例えば、アセトン、メチルエチルケトンなど)、エーテル類(例えば、ジオキサン、テトラヒドロフラン、セロソルブ、ジエチレングリコールジメチルエーテルなど)、脂肪族炭化水素類(例えば、ヘキサン、灯油など)、芳香族炭化水素類(例えば、ベンゼン、トルエン、キシレン、ソルベントナフサ、メチルナフタレンなど)、ハロゲン化炭化水素類(例えば、クロロホルム、四塩化炭素など)、酸アミド類(例えば、ジメチルホルムアミドなど)、エステル類(例えば、酢酸メチルエステル、酢酸エチルエステル、酢酸ブチルエステル、脂肪酸グリセリンエステルなど)およびニトリル類(例えば、アセトニトリルなど)などが挙げられる。これらの溶媒は、単独であるいは2種類以上を組み合わせて用いられ得る。
【0022】
本発明の抗微生物剤組成物に用いられ得る分散剤としては、有効成分に悪影響を与えない任意の分散剤、例えば、界面活性剤が挙げられる。このような界面活性剤としては、石けん類、高級アルコールの硫酸エステル、アルキルスルホン酸、アルキルアリールスルホン酸、第4級アンモニウム塩、オキシアルキルアミン、脂肪酸エステル、ポリアルキレンオキサイド系化合物、アンヒドロソルビトール系化合物などが挙げられる。これらの分散剤は、単独であるいは2種類以上を組み合わせて用いられ得る。
【0023】
A.3.担体
本発明の抗微生物剤組成物に用いられ得る担体としては、有効成分に悪影響を与えない任意の担体、例えば、クレー類(例えば、カオリン、ベントナイト、酸性白土など)、タルク類(例えば、滑石粉、ロウ石粉など)、シリカ類(例えば、珪藻土、無水ケイ酸など)、アルミナ、硫黄粉末、活性炭などが挙げられる。これらの担体は、単独であるいは2種類以上を組み合わせて用いられ得る。
【0024】
A.4.その他の成分
本発明の抗微生物剤組成物はさらに、他の抗微生物剤(例えば、有機塩素系殺菌剤、有機リン系殺菌剤、有機ヨウ素系殺菌剤、有機硫黄系殺菌剤、有機窒素系殺菌剤、有機窒素硫黄系殺菌剤、ベンズイミダゾール系殺菌剤、フェノール系殺菌剤、有機酸エステル系殺菌剤、抗生物質など)、殺虫剤(例えば、天然殺虫剤、カーバメート系殺虫剤、有機リン系殺虫剤など)、補助剤(例えば、カゼイン、ゼラチン、澱粉、アルギン酸、寒天、CMC、ポリビニルアルコール、植物油、ベントナイト、クレゾール石けんなど)、劣化防止剤、香料などを含有し得る。
【0025】
B.対象となる菌
本発明の抗微生物剤組成物は、一般に細菌、真菌、藻類などに対して広く作用し、そして1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンまたは(a)〜(c)の化合物を単独で処方することによって得られる抗微生物剤組成物よりも広い抗菌スペクトルを有する。なお、ここで真菌とは、真菌類ともいい、カビ、酵母、およびキノコなどを含む。本発明の抗微生物剤組成物によって発育が阻止、あるいは死滅し得る微生物としては、バチルス(Bacillus)属、スタフィロコッカス(Staphylococcus)属、エンテロバクター(Enterobacter)属、エスケリシア(Escherichia)属、シュードモナス(Pseudomonas)属などの細菌、アスペルギルス(Aspergillus)属、オーレオバシジウム(Aureobasidium)属、ケトミウム(Chaetomium)属、クラドスポリウム(Cladosporium)属、グリオクラジウム(Gliocladium)属、ペニシリウム(Penicillium)属、トリコデルマ(Trichoderma)属、カンジダ(Candida)属、ロドトルラ(Rhodotorula)属などの真菌、クロレラ(Chlorella)属、スミレモ(Trentepohlia)属、ネンジュモ(Nostoc)属、フォルミジウム(Phormidium)属などの藻類などが挙げられる。
【0026】
本発明の抗微生物剤組成物は各種の工業製品または工業用原材料に適用され得る。このような種々の工業製品または工業用原材料としては、繊維、塗料、接着剤、木材、皮革、紙加工品、電子部品、壁装材、樹脂成形物などが挙げられる。
【0027】
【実施例】
以下の実施例により、本発明による抗微生物剤組成物の抗微生物効力をさらに詳しく説明する。本実施例において用いられる用語「MIC」とは、抗微生物剤組成物中の有効成分の最小発育阻止濃度(ppm)を指す。より具体的には、細菌、真菌または藻類の発育を阻止し得る抗微生物剤組成物中の、1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと、(a)〜(c)の化合物より選ばれる化合物との混合物の最小濃度を指す。
【0028】
(接種用菌液の調製)
実施例1で用いられる接種用菌液を以下のようにして調製した。2つの別個の普通ブイヨン液体培地(10ml)に、2種の細菌、スタフィロコッカス・アウレウス(Staphylococcus aureus)IFO 12732、およびエスケリシア・コリ(Escherichia coli)IFO 3972をそれぞれ接種し、30℃で4〜6時間振盪培養して2種の接種用菌液を調製した。
【0029】
(接種用胞子懸濁液の調製)
実施例2で用いられる接種用胞子懸濁液を以下のようにして調製した。2種の真菌、アスペルギルス・ニガー(Aspergillus niger)IFO 6341、およびペニシリウム・フニクロスム(Penicillium funiculosum)IFO 6345を、薬剤を含有しない2つのポテトデキストロース寒天培地上で培養し、胞子を形成させた。次いで、潤滑剤を0.005%添加した滅菌水に上記真菌胞子を分散し、2種の接種用胞子懸濁液を調製した。
【0030】
(接種用藻懸濁液の調製)
実施例3で用いられる接種用藻懸濁液を以下のようにして調製した。Bold’s Basal液体培地(50ml)に、クロレラ・ピレノイドサ(Chlorella pyrenoidosa)NIES 226を接種し、25℃で14日間振盪培養して接種用藻懸濁液を調製した。
【0031】
(実施例1)
1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと、(a)〜(c)のいずれかの化合物とを、以下の表1および2に示される各重量比でジメチルホルムアミドに添加し、抗微生物剤組成物を調製した。次いで、普通ブイヨン液体培地(10ml)に、抗微生物剤組成物の段階希釈水溶液(0.2ml)をそれぞれ添加して、各試験培地を調製した。この各試験培地に、上記の接種用菌液(0.1ml)を接種し、30℃で24時間培養した後、培地の濁度を目視検査することによって細菌の発育の有無をそれぞれ決定した。培地中での細菌の発育を阻止し得る、1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと(a)〜(c)のいずれかの化合物との混合物の最小濃度をMICとした。各重量比の抗微生物剤組成物の、各細菌についてのMICを表1および2に示す。なお、組成物の濃度は、各抗微生物剤濃度の合計である。例えば、A:aが1:1で混合された組成物の最小発育阻止濃度は0.4ppmであるが、この最小発育濃度の組成物中のAの濃度は0.2ppmであり、そしてaの濃度は0.2ppmである。
【0032】
【表1】
【0033】
例えば、表1におけるA:a=1:1の組成物の場合、相乗効果がないと仮定すると、最小発育阻止濃度は0.77ppmとなる。しかし、実際の最小発育阻止濃度は0.4ppmであった。従って、この組成物は、化合物を組み合わせて使用した場合に相乗効果を有した。このことは、他の組成物についても同様であった。
【0034】
【表2】
【0035】
このように、いずれの組成物においても、化合物を組み合わせて使用した場合に相乗効果を有した。
【0036】
(実施例2)
1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと、(a)〜(c)のいずれかの化合物とを、以下の表3および4に示される各重量比でジメチルホルムアミドに添加し、抗微生物剤組成物を調製した。次いで、この抗微生物剤組成物の段階希釈水溶液(0.3ml)を、ポテトデキストロース寒天培地(15ml)に添加し、各試験培地を調製した。この各試験培地に、上記の接種用胞子懸濁液(1ml)を接種し、28℃で7日間培養した後、培地上の真菌の発育を目視検査することにより真菌の発育の有無をそれぞれ決定した。培地上での真菌の発育を阻止し得る、1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと(a)〜(c)のいずれかの化合物との混合物の最小濃度をMICとした。各重量比の抗微生物剤組成物の、各真菌についてのMICを表3および4に示す。
【0037】
【表3】
【0038】
このように、いずれの組成物においても、化合物を組み合わせて使用した場合に相乗効果を有した。
【0039】
【表4】
【0040】
このように、いずれの組成物においても、化合物を組み合わせて使用した場合に相乗効果を有した。
【0041】
(実施例3)
1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと、(a)〜(c)のいずれかの化合物とを、以下の表5に示される各重量比でジメチルホルムアミドに添加し、抗微生物剤組成物を調製した。次いで、この抗微生物剤組成物の段階希釈水溶液(0.1ml)を、Bold’s Basal寒天培地(15ml)に添加し、各試験培地を調製した。この各試験培地に、上記の接種用藻懸濁液(1ml)を接種し、25℃、1500luxで14日間培養した後、培地上の藻の発育を目視検査することにより藻の発育の有無をそれぞれ決定した。培地上での藻の発育を阻止し得る、1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと(a)〜(c)のいずれかの化合物との混合物の最小濃度をMICとした。各重量比の抗微生物剤組成物の、藻についてのMICを表5に示す。
【0042】
【表5】
【0043】
このように、いずれの組成物においても、化合物を組み合わせて使用した場合に相乗効果を有した。
【0044】
表1〜表5に示す結果から、本発明の抗微生物剤組成物は、有効成分の相乗効果により従来の抗微生物剤組成物と比較して効力が高く、かつ広い抗菌スペクトルを示すことが示される。さらに、単独で有効成分を用いた場合と比較して、同一量の細菌、真菌または藻類の発育を阻止するために用いられる抗微生物剤組成物の濃度は、極めて低く抑えられることが示される。
【0045】
上記各実施例と同様に、本発明の組成物は、工業製品または工業用原材料に配合された際にも良好な抗微生物効果を奏する。
【0046】
【発明の効果】
本発明によれば、1−[[(3−ヨード−2−プロピニル)オキシ]メトキシ]−4−メトキシベンゼンと、以下の化合物(a)〜(c):(a)ポリ(ヘキサメチレンビグアニド)塩酸塩、(b)1,2−ビス(ブロモアセトキシ)エタン、および(c)1,4−ビス(ブロモアセトキシ)−2−ブテンからなる群より選ばれる少なくとも1種以上の化合物とを有効成分として含有する抗微生物剤組成物が得られる。これらの有効成分を組み合わせることにより、これらの成分の相乗作用が得られ、安全性が高く、効力が高く、さらに広い抗菌スペクトルを有する抗微生物剤組成物が提供される。さらに、本発明の抗微生物剤組成物に含有される有効成分の濃度は低く抑えられるので、極めて安価に調製され得、さらに環境に与える影響は少ない。本発明の抗微生物剤組成物は、種々の工業製品および工業用原材料の防腐、防カビおよび防藻に有効である。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to antimicrobial compositions useful for industrial applications. More specifically, 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene, poly (hexamethylene biguanide) hydrochloride, 1,2-bis (bromoacetoxy) ethane, The present invention relates to an antimicrobial composition having a synergistic effect of these compounds when combined with at least one compound selected from the group consisting of 2,4-bis (bromoacetoxy) -2-butene.
[0002]
[Prior art]
BACKGROUND ART Conventionally, inorganic or organic compounds containing heavy metals such as mercury, tin, and copper (hereinafter, referred to as “heavy metal compounds”) have been widely used as antimicrobial agents for industrial products or industrial raw materials. However, since these heavy metal compounds are highly toxic, there is a risk of adversely affecting the human body. Furthermore, it is not appropriate to use heavy metal compounds as antimicrobial agents, because they can lead to environmental destruction.
[0003]
Many nonmetallic antimicrobial agents (eg, organic iodine compounds, nitrile compounds, isothiazolone compounds, benzimidazole compounds, pyrithion compounds) developed to solve the problems of such heavy metal compounds. Has selectivity in its antimicrobial spectrum. Therefore, even when these nonmetallic antimicrobial agents are applied to industrial products or industrial raw materials, especially organic materials (for example, fibers, paints, sizing agents, etc.), these antimicrobial agents have no effect. Alternatively, microorganisms that are difficult to play grow and propagate, so that contamination of industrial products and the like or deterioration (for example, deterioration) of industrial raw materials occurs. Therefore, satisfactory antimicrobial effects cannot be obtained with conventional antimicrobial compositions.
[0004]
Therefore, attempts have been made to broaden the antibacterial spectrum and increase the antimicrobial activity by combining two or more antimicrobial agents. However, usually, only one type of antimicrobial agent exerts its effect or only an arithmetic average effect is obtained.
[0005]
[Problems to be solved by the invention]
The present invention solves the above-mentioned problems, and an object of the present invention is to provide an antimicrobial composition having high safety, high efficacy, and a broad antibacterial spectrum.
[0006]
[Means for Solving the Problems]
The present inventors have conducted intensive studies in order to solve the above problems, and as a result, have found that 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene and the following (a) to (c) A): a group consisting of (a) poly (hexamethylene biguanide) hydrochloride, (b) 1,2-bis (bromoacetoxy) ethane, and (c) 1,4-bis (bromoacetoxy) -2-butene It has been found that an unexpected synergistic effect can be obtained in combination with at least one compound selected from the group consisting of: That is, each compound is obtained by a combination of 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene and a compound selected from the group consisting of the compounds (a) to (c). Found that an antimicrobial composition having enhanced potency and a broader antibacterial spectrum was obtained as compared with the case of using the compound alone, and completed the present invention.
[0007]
According to the present invention, 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene and the following compounds (a) to (c): (a) poly (hexamethylene biguanide) ) An antimicrobial comprising: hydrochloride, (b) 1,2-bis (bromoacetoxy) ethane, and (c) at least one selected from the group consisting of 1,4-bis (bromoacetoxy) -2-butene An agent composition is provided.
[0008]
According to the present invention, there is also provided the above-mentioned composition for inhibiting or killing the growth of bacteria, fungi or algae.
[0009]
Preferably, the weight ratio of the 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene to the selected compound ranges from 20: 1 to 1:20. . More preferably, the weight ratio of the 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene to the selected compound is in the range of 5: 1 to 1: 5. is there.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
As used herein, the term “antimicrobial composition” refers to a composition that has the effect of inhibiting the growth of, or killing, microorganisms such as bacteria, fungi, and algae. Here, "suppressing the growth of microorganisms" refers to a state in which the antimicrobial agent composition is not contained, that is, the degree of growth of the microorganisms is smaller than that of the control, or the microorganisms do not grow at all.
[0011]
A. Composition of antimicrobial composition A. 1. Active Ingredient The antimicrobial composition of the present invention comprises 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene and the following compounds (a) to (c): (a) ) At least one selected from the group consisting of poly (hexamethylene biguanide) hydrochloride, (b) 1,2-bis (bromoacetoxy) ethane, and (c) 1,4-bis (bromoacetoxy) -2-butene As an active ingredient.
[0012]
1-[[(3-Iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene can be synthesized, for example, by the method described in Patent Publication 2852289.
[0013]
Poly (hexamethylene biguanide) hydrochloride can be synthesized, for example, by the method described in GB702268.
[0014]
1,2-Bis (bromoacetoxy) ethane and 1,4-bis (bromoacetoxy) -2-butene can be synthesized, for example, by the method described in JP-B-58-26737.
[0015]
Ratio of 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene in the antimicrobial composition and a compound selected from the group consisting of compounds (a) to (c) Can be appropriately selected depending on the kind of the target microorganism, conditions under which the composition is used as an antimicrobial agent, and the like. Usually, the ratio between 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene and the compounds (a) to (c) is 20: 1 to 1:20 by weight. , Preferably 5: 1 to 1: 5, particularly preferably 3: 1 to 1: 3.
[0016]
When a plurality of the compounds (a) to (c) are used, the above-mentioned preferable mixing ratio is calculated based on the total weight of the compounds.
[0017]
The antimicrobial composition of the present invention can be used in a form depending on the purpose of use. For example, the antimicrobial composition of the present invention can be selected from the group consisting of simply 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene and the compounds (a) to (c). The compound may be a mixture of a compound and a compound, but is preferably a group consisting of 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene and the compounds (a) to (c). It may contain a suitable solvent and a dispersant or a carrier or other components in addition to the compound selected from the above.
[0018]
The total of 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene and the compound selected from the group consisting of the compounds (a) to (c) in the composition of the present invention. The content varies depending on the dosage form and the purpose of use, but is usually 0.1% to 95% by weight, preferably 0.2% to 60% by weight of the whole obtained antimicrobial composition. It is.
[0019]
In addition, the amount of the antimicrobial agent composition of the present invention varies depending on the composition and the type and concentration of the target microorganism, but generally 1 mg when used for fibers, paints, adhesives and the like. A good effect can be obtained at about / g to 10 g / kg.
[0020]
A. 2. When the target system of the solvent and the dispersant is various industrial water systems, it is preferable to prepare a solution containing the solvent and the dispersant, as described later, in consideration of the dissolution and dispersibility of the active ingredient. .
[0021]
As the solvent that can be used in the antimicrobial composition of the present invention, any solvent that does not adversely affect the active ingredient, for example, water, alcohols (eg, methyl alcohol, ethyl alcohol, ethylene glycol, propylene glycol, diethylene glycol, Glycerin, etc.), ketones (eg, acetone, methyl ethyl ketone, etc.), ethers (eg, dioxane, tetrahydrofuran, cellosolve, diethylene glycol dimethyl ether, etc.), aliphatic hydrocarbons (eg, hexane, kerosene, etc.), aromatic hydrocarbons (Eg, benzene, toluene, xylene, solvent naphtha, methylnaphthalene, etc.), halogenated hydrocarbons (eg, chloroform, carbon tetrachloride, etc.), acid amides (eg, dimethylformamide, etc.), and ester Class (e.g., methyl acetate, ethyl acetate, butyl acetate, fatty acid glycerol ester, etc.), and nitriles (e.g., acetonitrile), and the like. These solvents can be used alone or in combination of two or more.
[0022]
Examples of the dispersant that can be used in the antimicrobial composition of the present invention include any dispersant that does not adversely affect the active ingredient, for example, a surfactant. Examples of such surfactants include soaps, sulfates of higher alcohols, alkylsulfonic acids, alkylarylsulfonic acids, quaternary ammonium salts, oxyalkylamines, fatty acid esters, polyalkylene oxide compounds, anhydrosorbitol compounds. And the like. These dispersants can be used alone or in combination of two or more.
[0023]
A. 3. Carriers Carriers that can be used in the antimicrobial composition of the present invention include any carriers that do not adversely affect the active ingredient, such as clays (eg, kaolin, bentonite, acid clay), talcs (eg, talc) And silica (eg, diatomaceous earth and silicic anhydride), alumina, sulfur powder, activated carbon, and the like. These carriers can be used alone or in combination of two or more.
[0024]
A. 4. Other Ingredients The antimicrobial composition of the present invention may further contain other antimicrobial agents (for example, organochlorine fungicides, organic phosphorus fungicides, organic iodine fungicides, organic sulfur fungicides, organic nitrogen fungicides). Pesticides, organic nitrogen sulfuric acid fungicides, benzimidazole fungicides, phenolic fungicides, organic acid ester fungicides, antibiotics, etc., insecticides (eg, natural insecticides, carbamate insecticides, organophosphorus insecticides) Agents, etc.), adjuvants (eg, casein, gelatin, starch, alginic acid, agar, CMC, polyvinyl alcohol, vegetable oil, bentonite, cresol soap, etc.), deterioration inhibitors, fragrances and the like.
[0025]
B. Bacteria of interest The antimicrobial compositions of the present invention generally act broadly against bacteria, fungi, algae, and the like, and are characterized by 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxy. It has a broader antimicrobial spectrum than the antimicrobial composition obtained by formulating benzene or the compounds of (a) to (c) alone. Here, the fungus is also called a fungus and includes mold, yeast, mushroom, and the like. Examples of the microorganisms whose growth can be inhibited or killed by the antimicrobial composition of the present invention include Bacillus, Staphylococcus, Enterobacter, Escherichia, and Pseudomonas. Bacteria such as the genus Pseudomonas, the genus Aspergillus, the genus Aureobasidium, the genus Chaetomium, the genus Cladosporium, the genus Gliocladium, Gliocradinicium, Gliocradicium (Trichoderma), Candida, Rhodotorula (Rh) Dotorula) genus fungi such as, Chlorella (Chlorella) genus Sumiremo (Trentepohlia) genus Nostoc (Nostoc) genus, and the like algae such as Phormidium (Phormidium) genus.
[0026]
The antimicrobial composition of the present invention can be applied to various industrial products or industrial raw materials. Examples of such various industrial products or industrial raw materials include fibers, paints, adhesives, wood, leather, processed paper products, electronic components, wall coverings, and resin molded products.
[0027]
【Example】
The following examples further illustrate the antimicrobial efficacy of the antimicrobial composition of the present invention. The term "MIC" used in this example refers to the minimum inhibitory concentration (ppm) of an active ingredient in an antimicrobial composition. More specifically, 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene in an antimicrobial composition capable of inhibiting the growth of bacteria, fungi or algae; The minimum concentration of a mixture with a compound selected from the compounds a) to (c).
[0028]
(Preparation of bacterial solution for inoculation)
The bacterial solution for inoculation used in Example 1 was prepared as follows. Two separate normal broth broths (10 ml) were inoculated with two bacteria, Staphylococcus aureus IFO 12732 and Escherichia coli IFO 3972, respectively, at 30 ° C. for 4 to 3 hours. Shaking culture was performed for 6 hours to prepare two kinds of bacterial liquids for inoculation.
[0029]
(Preparation of spore suspension for inoculation)
The spore suspension for inoculation used in Example 2 was prepared as follows. Two fungi, Aspergillus niger IFO 6341, and Penicillium funiculosum IFO 6345, were cultured on two drug-free potato dextrose agar plates to form spores. Next, the fungal spores were dispersed in sterile water to which 0.005% of a lubricant was added to prepare two kinds of spore suspensions for inoculation.
[0030]
(Preparation of algae suspension for inoculation)
The algal suspension for inoculation used in Example 3 was prepared as follows. Chlorella pyrenoidosa NIES 226 was inoculated into Bold's Basal liquid medium (50 ml), and cultured with shaking at 25 ° C. for 14 days to prepare an algal suspension for inoculation.
[0031]
(Example 1)
1-[[(3-Iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene and any of the compounds (a) to (c) were mixed with each of the weights shown in Tables 1 and 2 below. The ratio was added to dimethylformamide to prepare an antimicrobial composition. Next, a serially diluted aqueous solution (0.2 ml) of the antimicrobial agent composition was added to the ordinary broth liquid medium (10 ml) to prepare each test medium. Each test medium was inoculated with the above inoculum (0.1 ml), cultured at 30 ° C. for 24 hours, and visually examined for turbidity of the medium to determine the presence or absence of bacterial growth. A mixture of 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene and any of the compounds (a) to (c), which can inhibit the growth of bacteria in a medium Was defined as the MIC. Tables 1 and 2 show the MIC for each bacterium of the antimicrobial composition at each weight ratio. The concentration of the composition is the sum of the concentrations of each antimicrobial agent. For example, the minimum inhibitory concentration of a composition in which A: a is mixed at 1: 1 is 0.4 ppm, while the concentration of A in the composition having the minimum growth concentration is 0.2 ppm, and The concentration is 0.2 ppm.
[0032]
[Table 1]
[0033]
For example, for the composition of A: a = 1: 1 in Table 1, assuming no synergistic effect, the minimum inhibitory concentration is 0.77 ppm. However, the actual minimum inhibitory concentration was 0.4 ppm. Thus, the composition had a synergistic effect when used in combination with the compounds. This was also true for the other compositions.
[0034]
[Table 2]
[0035]
As described above, all the compositions had a synergistic effect when the compounds were used in combination.
[0036]
(Example 2)
1-[[(3-Iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene and any of the compounds (a) to (c) were mixed with each of the weights shown in Tables 3 and 4 below. The ratio was added to dimethylformamide to prepare an antimicrobial composition. Next, a serially diluted aqueous solution (0.3 ml) of the antimicrobial agent composition was added to a potato dextrose agar medium (15 ml) to prepare each test medium. Each test medium is inoculated with the spore suspension (1 ml) for inoculation described above, cultured at 28 ° C. for 7 days, and then visually examined for the growth of the fungus on the medium to determine the presence or absence of the growth of the fungus. did. A mixture of 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene and any of the compounds (a) to (c), which can inhibit the growth of fungi on the medium Was defined as the MIC. Tables 3 and 4 show the MIC for each fungus of the antimicrobial composition at each weight ratio.
[0037]
[Table 3]
[0038]
As described above, all the compositions had a synergistic effect when the compounds were used in combination.
[0039]
[Table 4]
[0040]
As described above, all the compositions had a synergistic effect when the compounds were used in combination.
[0041]
(Example 3)
1-[[(3-Iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene and any of the compounds (a) to (c) were used at the respective weight ratios shown in Table 5 below. It was added to dimethylformamide to prepare an antimicrobial composition. Next, a serially diluted aqueous solution (0.1 ml) of the antimicrobial agent composition was added to Bold's Basal agar medium (15 ml) to prepare each test medium. Each of the test media was inoculated with the above algal suspension for inoculation (1 ml), cultured at 25 ° C. and 1500 lux for 14 days, and then visually examined for the growth of algae on the medium to determine whether or not the algae had grown. Each was decided. A mixture of 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene and any of the compounds (a) to (c), which can inhibit the growth of algae on a medium Was defined as the MIC. Table 5 shows the MIC for the algae of the antimicrobial composition at each weight ratio.
[0042]
[Table 5]
[0043]
Thus, all the compositions had a synergistic effect when the compounds were used in combination.
[0044]
From the results shown in Tables 1 to 5, it is shown that the antimicrobial composition of the present invention is higher in efficacy than the conventional antimicrobial composition due to the synergistic effect of the active ingredient, and shows a broad antibacterial spectrum. It is. Furthermore, it is shown that the concentration of the antimicrobial composition used to inhibit the growth of the same amount of bacteria, fungi or algae can be kept very low compared to the case where the active ingredient is used alone.
[0045]
As in the above examples, the composition of the present invention also has a good antimicrobial effect when incorporated into industrial products or industrial raw materials.
[0046]
【The invention's effect】
According to the present invention, 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene and the following compounds (a) to (c): (a) poly (hexamethylene biguanide) An active ingredient comprising at least one compound selected from the group consisting of hydrochloride, (b) 1,2-bis (bromoacetoxy) ethane, and (c) 1,4-bis (bromoacetoxy) -2-butene. The antimicrobial composition containing as an antimicrobial agent is obtained. By combining these active ingredients, a synergistic action of these ingredients is obtained, and an antimicrobial composition having high safety, high efficacy, and a broad antibacterial spectrum is provided. Furthermore, since the concentration of the active ingredient contained in the antimicrobial composition of the present invention can be kept low, it can be prepared at extremely low cost, and the influence on the environment is small. INDUSTRIAL APPLICABILITY The antimicrobial composition of the present invention is effective for preserving, fungicidal, and algae-proofing various industrial products and industrial raw materials.
Claims (3)
(a)ポリ(ヘキサメチレンビグアニド)塩酸塩、
(b)1,2−ビス(ブロモアセトキシ)エタン、および
(c)1,4−ビス(ブロモアセトキシ)−2−ブテン。It contains 1-[[(3-iodo-2-propynyl) oxy] methoxy] -4-methoxybenzene and at least one compound selected from the group consisting of the following compounds (a) to (c). Antimicrobial composition:
(A) poly (hexamethylene biguanide) hydrochloride,
(B) 1,2-bis (bromoacetoxy) ethane and (c) 1,4-bis (bromoacetoxy) -2-butene.
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|---|---|---|---|
| JP2002264033A JP2004099528A (en) | 2002-09-10 | 2002-09-10 | Antimicrobial agent composition |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002264033A JP2004099528A (en) | 2002-09-10 | 2002-09-10 | Antimicrobial agent composition |
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|---|---|
| JP2004099528A true JP2004099528A (en) | 2004-04-02 |
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| JP2002264033A Pending JP2004099528A (en) | 2002-09-10 | 2002-09-10 | Antimicrobial agent composition |
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2002
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