JP4779263B2 - Antibacterial agent composition and method for imparting antibacterial properties - Google Patents
Antibacterial agent composition and method for imparting antibacterial properties Download PDFInfo
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Description
【0001】
【発明の属する技術分野】
本発明は抗菌剤組成物に関する。
【0002】
【従来の技術および発明が解決しようとする課題】
オキソリニック酸およびその塩は樹脂、繊維、塗料等の抗菌剤として知られている(特開平9−208408、特開平9−176966、特開平9−249827)が、使用場面によっては効力が充分でない場合があり、より効力が高い、抗菌剤の開発が求められている。
【0003】
【課題を解決するための手段】
本発明者らはオキソリニック酸またはその塩を用いる抗菌剤について検討を重ねた結果、(1)オキソリニック酸またはその塩及び(2)酸化亜鉛を含有する組成物が抗菌剤として、より高い抗菌活性を発揮し得ることを見出し本発明に至った。
【0004】
即ち、本発明は、(1)オキソリニック酸またはその塩及び(2)酸化亜鉛を有効成分(以下、本有効成分と記す。)として含有することを特徴とする抗菌剤組成物(以下、本発明組成物と記す。)、本発明組成物を樹脂製品または成形前の樹脂に処理することを特徴とする樹脂製品の抗菌性付与方法、本発明組成物を紙製品または紙原料に処理することを特徴とする紙製品の抗菌性付与方法、本発明組成物を繊維製品、繊維または繊維原料に処理することを特徴とする繊維製品の抗菌性付与方法、(1)オキソリニック酸またはその塩及び(2)酸化亜鉛を樹脂製品または成形前の樹脂に処理することを特徴とする樹脂製品の抗菌性付与方法、(1)オキソリニック酸またはその塩及び(2)酸化亜鉛を紙製品または紙原料に処理することを特徴とする紙製品の抗菌性付与方法、(1)オキソリニック酸またはその塩及び(2)酸化亜鉛を繊維製品、繊維または繊維原料に処理することを特徴とする繊維製品の抗菌性付与方法および該抗菌剤組成物が処理されてなる樹脂製品、紙製品または繊維製品を提供するものである。
【0005】
【発明の実施の形態】
本発明に用いられるオキソリニック酸は、化学名が5−エチル−5,8−ジヒドロ−8−オキソ[1,3]ジオキソロ[4,5−g]キノリン−7−カルボン酸であり、例えば、The Pesticide Manual第10版(British Crop Protection Council発行)、第760頁に記載の抗菌性化合物である。
また、オキソリニック酸は塩の形態で本発明組成物に用いてもよく、具体的には例えば、オキソリニック酸カルシウム等のオキソリニック酸アルカリ土類金属塩、オキソリニック酸ナトリウム等のオキソリニック酸アルカリ金属塩等が挙げられる。
本発明組成物においては、オキソリニック酸及びその塩は共存していてもよい。
【0006】
本発明組成物としては例えば本有効成分自体、本有効成分を含有する製剤、本有効成分または該製剤を水等に希釈した希釈液等の種々の形態を挙げることができる。
【0007】
本発明組成物中、本有効成分におけるオキソリニック酸またはその塩に対する酸化亜鉛の割合は重量比で通常1:1〜1:3000、好ましくは1:1〜1:2500の範囲である。なお、本明細書中においてオキソリニック酸塩を用いる場合、その基準量はオキソリニック酸塩自体の重量ではなく、オキソリニック酸の量に換算した重量である。
【0008】
本有効成分を含有する製剤の形態としては水和剤、フロアブル剤、粉剤等の形態を挙げることができ、該製剤の水希釈液としては、水和剤、フロアブル剤等を水に希釈した希釈液が挙げられる。
【0009】
本発明組成物の一形態である本有効成分を含有する製剤(以下、本製剤と記す。)は、通常、本有効成分を固体担体、界面活性剤等と混合し、必要により製剤用補助剤を添加する、一般的に知られた方法によって、適宜得られる。
【0010】
通常、本有効成分である(1)オキソリニック酸またはその塩及び(2)酸化亜鉛は混合された状態で製剤化され、本製剤が得られるが、それぞれを予め製剤化し、両者を混合することにより得ることもできる。
【0011】
本製剤に用いられ得る固体担体としては、例えばカオリンクレ−、アッタパルジャイトクレ−、ベントナイト、モンモリロナイト、酸性白土、パイロフィライト、タルク、珪藻土、方解石等の鉱物質、トウモロコシ穂軸粉、クルミ殻粉等の天然有機物、尿素等の合成有機物、炭酸カルシウム、硫酸アンモニウム等の塩類、合成含水酸化珪素等の合成無機物の微粉末あるいは粒状物等があげられる。
界面活性剤としては、例えばアルキル硫酸エステル塩、アルキル(アリ−ル)スルホン酸塩、ジアルキルスルホコハク酸塩、ポリオキシエチレンアルキルアリ−ルエ−テルリン酸エステル塩、リグニンスルホン酸塩、ナフタレンスルホン酸ホルマリン縮合物等の陰イオン界面活性剤、ポリオキシエチレンアルキルアリールエーテル、ポリオキシエチレンアルキルポリオキシプロピレンブロックコポリマ−、ソルビタン脂肪酸エステル等の非イオン界面活性剤等があげられる。
製剤用補助剤としては、分散剤、固着剤、防腐剤、着色剤、安定剤、増粘剤等があげられ、具体的には例えば、ポリビニルアルコ−ル、ポリビニルピロリドン等の水溶性高分子、アラビアガム、アルギン酸またはその塩、CMC(カルボキシメチルセルロ−ス)、ザンサンガム等の多糖類、アルミニウムマグネシウムシリケート、アルミナゾル等の無機物、PAP(酸性リン酸イソプロピル)、BHT、水等が挙げられる。
【0012】
本製剤には本有効成分が通常0.1%から90%、好ましくは1%から80%含有される。
【0013】
本有効成分を含有する希釈液(以下、本希釈液と記す。)は通常、水和剤、フロアブル剤等を水等に希釈する一般的な方法によって得られる。また、水に分散剤を混合し、次いで本有効成分を加える方法によって得ることもできる。
【0014】
本発明組成物を樹脂製品または成形前の樹脂に処理することにより、樹脂製品に抗菌性を付与することができる。
樹脂製品は、例えば、樹脂を成形して得られる樹脂成形体及び樹脂でコーティング処理された各種の一般製品を含む。
樹脂製品の例としては具体的には食器類、文房具類等が挙げられる。
本発明におけるコーティング処理とは、樹脂の成形処理の一形態であり、具体的には樹脂を、吹き付け、塗布等の方法により、一般製品の表面に被覆する処理である。また、一般製品としては、例えば、金属製品、繊維製品、紙製品、木材製品等、抗菌性が望まれる様々な製品が挙げられる。樹脂でコーティング処理された樹脂製品としては、具体的には、例えば洗濯槽や装丁紙などが挙げられる。
樹脂の種類としては具体的には例えば、ポリエチレン、ポリプロピレン、アクリルニトリルブタジエンスチレン共重合体、ポリエチレンテレフタレート等の樹脂が挙げられる。
【0015】
本発明組成物を処理することにより樹脂製品に抗菌性を付与する方法としては、▲1▼成形前の樹脂に本発明組成物を処理し、該本発明組成物を処理した樹脂を成形することにより樹脂製品とする方法、▲2▼樹脂製品に本発明組成物を処理する方法、▲3▼樹脂に本発明組成物を処理し、該本発明組成物を処理した樹脂を各種の一般製品にコーティング処理する方法、▲4▼本発明組成物を処理して得られる本発明組成物含有樹脂と、本発明組成物を含有しない樹脂とを混合し、該混合した樹脂を成形することにより樹脂製品とする方法等が挙げられる。
【0016】
成形前の樹脂に本発明組成物を処理し、該本発明組成物を処理した樹脂を成形し、樹脂製品とする方法としては、具体的には以下の方法が挙げられる。
溶融状態のポリエチレン等の樹脂に本発明組成物を混合し、その後、押し出し成形、射出成形等の通常の方法を用いて樹脂を成形する。
成形前の樹脂に本発明組成物を混合する場合には本発明組成物は本有効成分をそのまま用いてもよく、また本製剤の形態で用いてもよい。樹脂に本発明組成物を処理する際の本発明組成物の処理量は、本有効成分量に換算して、樹脂1kgにつき通常0.1gから100g、好ましくは1gから50gである。
【0017】
樹脂製品に本発明組成物を処理する方法としては、具体的には次のような方法が挙げられる。
樹脂製品の表面に、スプレー等を用いて本希釈液を吹きつけ、その後、乾燥させ、本発明組成物を付着させる。もしくは本希釈液の中に樹脂製品を浸漬し、その後、乾燥させ、該製品の表面に本発明組成物を付着させる。
本発明組成物を樹脂製品に処理する場合には、通常本希釈液が用いられる。樹脂製品に本発明組成物を処理する際、該製品への本発明組成物の付着量は、樹脂製品の表面1m2あたり本有効成分量に換算して通常0.01gから1gである。その際、本希釈液中の本有効成分量は本希釈液1リットルあたり通常0.01gから10g、好ましくは0.1gから5gである。また、浸漬処理を行う場合、浸漬時間は通常1分から60分程度である。
【0018】
樹脂に本発明組成物を処理し、該本発明組成物を処理した樹脂を各種の一般製品にコーティング処理する方法としては、具体的には次のような方法が挙げられる。
溶融状態の樹脂に本発明組成物を加えて混合し、本発明組成物含有樹脂とする。該樹脂の中に金属製品、繊維製品、紙製品、木材製品等の一般製品を浸漬させ、その表面を該樹脂で被覆する。また、該樹脂をスプレー等で吹き付けることにより、一般製品の表面を該樹脂で被覆してもよい。
本発明組成物含有樹脂を一般製品にコーティング処理する際、本発明組成物含有樹脂に含有される本発明組成物の量は、本有効成分量に換算して樹脂1Kgに対して通常0.01gから10g、好ましくは0.05gから5gである。
【0019】
また、本有効成分である(1)オキソリニック酸またはその塩及び(2)酸化亜鉛は別々に樹脂製品または成形前の樹脂に処理することもできる。その際、(1)オキソリニック酸またはその塩及び(2)酸化亜鉛は、化合物そのもの、各種製剤、あるいはこれらの水希釈液等、処理に応じた種々の形態であり得る。かかる処理方法もまた、本発明の抗菌性付与方法の処理の一態様である。
【0020】
本発明組成物を紙製品または紙原料に処理することにより、紙製品に抗菌性を付与することができる。
ここでいう紙製品とは、例えば天然パルプ、化学パルプ、半化学パルプ、メカニカルパルプ等の各種の紙原料から得られる紙成形体、または該成形体を加工して得られるものを意味する。紙製品の例としては具体的には壁紙などが挙げられる。
【0021】
本発明組成物を処理することにより紙製品に抗菌性を付与する方法としては、▲1▼成形前の紙原料に本発明組成物を処理し、該原料を用いて紙成形体を製造する方法、▲2▼紙製品に本発明組成物を処理する方法が挙げられる。
【0022】
成形前の紙原料に本発明組成物を処理し、該本発明組成物を処理した紙原料を用いて紙を成形する方法は、具体的には次のような方法が挙げられる。
パルプに本発明組成物を混合した後、通常の抄造機等を用いる方法により紙成形体が得られる。
本発明組成物を紙原料に混合する場合には本発明組成物は本有効成分をそのまま用いてもよく、また本製剤の形態で用いてもよい。本発明組成物を紙原料に処理する際の本発明組成物の処理量は、本有効成分量に換算して紙原料1Kgあたり通常0.05gから50g、好ましくは0.5gから20gである。
【0023】
紙製品に本発明組成物を処理する方法は、例えば次のような方法で行うことができる。
紙製品の表面に本希釈液をスプレー等を用いて吹きつけ、乾燥させ、本発明組成物を付着させる。
本発明組成物を紙製品の表面に処理する場合には、通常本希釈液が用いられる。紙製品の表面に本発明組成物を処理する際、該製品への本発明組成物の付着量は、紙製品の表面1m2あたり、本有効成分量に換算して通常0.005gから0.5gである。またその際、本希釈液中に含まれる本有効成分量は、本希釈液1リットルあたり通常0.005gから10g、好ましくは0.5gから5gである。
【0024】
また、本有効成分である(1)オキソリニック酸またはその塩及び(2)酸化亜鉛は別々に紙製品または紙原料に処理することもできる。その際、(1)オキソリニック酸またはその塩及び(2)酸化亜鉛は、化合物そのもの、各種製剤、あるいはこれらの水希釈液等、処理に応じた種々の形態であり得る。かかる処理方法もまた、本発明の抗菌性付与方法の処理の一態様である。
【0025】
本発明組成物を繊維製品、繊維または繊維原料に処理することにより、繊維製品に抗菌性を付与することができる。
ここでいう繊維製品とは、合成繊維や天然繊維を紡織して得られた各種の製品を意味する。また、繊維を製織加工して得られる布、不織布等も繊維製品に含まれる。また、抗菌性付与対象となる繊維製品の具体的な例としては、例えば、手袋や学生服、カーペットなどが挙げられる。
ここで繊維原料としては、ナイロン、レーヨン、ポリエステルなどの合成繊維原料があげられる。また、繊維としては該原料を紡績して得られる各種の合成繊維及び綿、麻、絹などの天然繊維が挙げられる。
【0026】
本発明組成物を処理することにより繊維製品に抗菌性を付与する方法としては、例えば、▲1▼繊維原料に本発明組成物を処理し、該原料を紡績して得られた繊維を製織し、繊維製品を得る方法、▲2▼繊維に本発明組成物を処理し、乾燥させた後に製織して繊維製品を得る方法、▲3▼繊維製品に本発明組成物を処理する方法が挙げられる。
【0027】
繊維原料に本発明組成物を処理し、該原料を紡績し、得られた繊維を製織して繊維製品を得る方法としては、具体的には以下のような方法が挙げられる。
繊維原料に本発明組成物を加え、混合する。その後、通常の紡績、製織方法を用いて、繊維製品を得る。
本発明組成物を繊維原料に混合する場合には本発明組成物は本有効成分をそのまま用いてもよく、また本製剤の形態で用いてもよい。繊維原料に本発明組成物を処理する際、繊維原料に対する本発明組成物の処理量は、本有効成分量に換算して繊維原料1Kgあたり通常0.1gから100g、好ましくは1gから50gである。
【0028】
繊維または繊維製品に本発明組成物を処理する方法としては、例えば、次のような方法が挙げられる。
本希釈液に繊維または繊維製品を浸漬することにより、本発明組成物を繊維または繊維製品の表面に付着させる。あるいは、繊維または繊維製品の表面にスプレー等を用いて本希釈液を吹き付け、乾燥させることにより本発明組成物を付着させる。前記のいずれの方法においても、本発明組成物を繊維に処理した場合には、該繊維は通常の製織方法により、繊維製品とされる。
本発明組成物を繊維または繊維製品に処理する場合には、通常本希釈液が用いられる。繊維または繊維製品に本発明組成物を処理する際、繊維または繊維製品への本発明組成物の付着量としては、繊維又は繊維製品1Kgあたり本有効成分量に換算して、通常0.01gから5g、好ましくは0.1gから5gである。また、その際本希釈液中に含まれる本有効成分量は本希釈液1リットルあたり通常0.01gから10g、好ましくは0.1gから5gである。また、繊維または繊維製品を浸漬する場合、浸漬時間は通常1分から60分程度である。
【0029】
また、本有効成分である(1)オキソリニック酸またはその塩及び(2)酸化亜鉛は別々に繊維製品、繊維または繊維原料に処理することもできる。その際、(1)オキソリニック酸またはその塩及び(2)酸化亜鉛は、化合物そのもの、各種製剤、あるいはこれらの水希釈液等、処理に応じた種々の形態であり得る。かかる処理方法もまた、本発明抗菌性付与方法の処理の一態様である。
【0030】
本発明組成物はStaphylococcus aureus等のStaphylococcus属、Escherichia coli等のEscherichia属、Klebsiella pneumoniae 等のKlebsiella属、Pseudomonas aeruginosa等のPseudomonas属などの細菌に対して高い抗菌作用を発揮し得るものである。
【0031】
また、オキソリニック酸またはその塩で抗菌処理された製品は紫外線に常にさらされるような過酷な条件においては該製品が黄変することがあったが、本発明組成物で処理された製品はかかる変色が抑えられる効果をも有する。
【0032】
【実施例】
次に、実施例をあげて本発明をより詳細に説明するが、本発明は以下の例のみに限定されるものではない。
なお、以下の例において、%は全て重量%を表す。
【0033】
実施例1
オキソリニック酸2部、酸化亜鉛20部及びソルビタントリオレエート1.5部と、ポリビニルアルコール2部を含む水溶液28.5部とを混合し、湿式粉砕法で微粉砕した後、キサンタンガム0.05部及びアルミニウムマグネシウムシリケート0.1部を含む水溶液38部を加え、さらにプロピレングリコール10部を加えて攪拌混合しフロアブル製剤を得る。
【0034】
実施例2
オキソリニック酸0.5部、酸化亜鉛5部、カオリンクレー84.5部及びタルク10部をよく粉砕混合することにより粉剤を得る。
【0035】
実施例3
オキソリニック酸5部、酸化亜鉛50部、リグニンスルホン酸カルシウム3部、ラウリル硫酸ナトリウム2部及び合成含水酸化珪素40部をよく粉砕混合することにより水和剤を得る。
【0036】
実施例4
次に示す方法にしたがい、樹脂プレートを作製した。
ABS樹脂1Kgと本発明組成物(オキソリニック酸/酸化亜鉛=1g/9g)10gとをビニール袋に入れ、よく振って混合した。該混合物を押出し機のホッパーに投入し、コンパウンド化を行った。該コンパウンド化物を80℃で3時間乾燥させ、その後、射出成形機を用いてプレート化した。
押出し機;PCM30((株)磯貝社製)
加工温度;220〜240℃
射出成型機;SVH−30−50−p((株)山城精機製作所社製)
加工温度 ;220〜230℃
【0037】
試験例1
オキソリニック酸、酸化亜鉛、オキソリニック酸および酸化亜鉛のそれぞれを、表1に記載の濃度になるように寒天培地に添加し、培地を作成した。同時に比較として培地に何も添加しない無処理の培地も用意した。これらの培地にStaphylococcus aureusを画線接種し、27℃にて2日間培養した。2日後の菌の生育度合いを観察し、下記に示す基準により、生育阻害率(%)を求めた。本試験は3反復行い、それらの生育阻害率を平均して最終的な生育阻害率とした。その結果を表1に示す。
・生育阻害率(%)の算定方法
培地上に生育した細菌のコロニーの大きさを、下記の基準にしたがって評価した。各評価段階で定められた生育阻害率を試験例1及び2における菌の生育阻害率として用いた。
細菌の生育を全く認めない場合:生育阻害率100%、
細菌の増殖が接種部位の極一部に認められる場合:生育阻害率95%、
細菌の増殖が接種部位のみに明確に認められる場合:生育阻害率80%、
細菌の増殖が無処理と比較して顕著に抑えられているものの、接種部位よりコロニーが拡大している場合:生育阻害率50%、
無処理と同程度に増殖している場合:生育阻害率0%。
【表1】
試験例2
Staphylococcus aureusでの試験と同様に、表2に記載の濃度になるようにオキソリニック酸、酸化亜鉛、オキソリニック酸および酸化亜鉛のそれぞれを添加した培地と、無処理の培地を用意し、Escherichia coliを用いて同様の試験を行った。上記に示す基準により、生育阻害率を求めた。本試験は3反復行い、それらの生育阻害率を平均して、最終的な生育阻害率とした。その結果を表2に示す。
【表2】
【0038】
試験例3
実施例4で作製した樹脂プレートに、サンシャインウェザーメーター(スーパーUVテスターSUV−F1 大日本プラスチック(株)製)を用いて、63℃にて2時間または4時間の紫外線照射を行い、紫外線による変色の度合いを調べた。その結果、2時間照射を行った樹脂プレートにおいても、4時間照射を行った樹脂プレートにおいても、変色は認められなかった。
紫外線照射の条件は次に示す。
照射条件;63℃×2〜4時間
紫外線強度;100±5mW/cm2 al 23cm
波長;300〜450nm(エネルギー分布・・360〜380nmが最大)
【0039】
試験例4
フィルム密着法(抗菌製品技術協議会試験方法、抗菌製品の抗菌力評価試験法I)に準じて、以下の試験を行った。
実施例4で作成した樹脂プレート(50mm×60mm)、及び本発明組成物を添加しない以外は実施例4と同様の方法で作成した本発明組成物無添加樹脂プレートのそれぞれの表面に、Escherichia coli IFO 3972を培養した菌液を0.4ml(菌数:約1.0〜105個/ml)滴下し、該プレート上に感染させた。該プレート表面上をフィルム(40mm×40mm)で被覆し、温度36℃、湿度90%以上の条件下にて1日間培養した。その後、該プレート上の生菌数を測定した。
また、Staphylococcus aureus ATCC 6538Pにおいても同様の試験を行った。結果をまとめて表3に示す。
【表3】
【0040】
【発明の効果】
本発明によれば、優れた抗菌効力を発揮し得る抗菌剤組成物を提供でき、また、該組成物を樹脂製品、紙製品、繊維製品、あるいはこれらの製造原料に処理することにより、該製品への有効な抗菌性付与が可能となる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an antibacterial agent composition.
[0002]
[Background Art and Problems to be Solved by the Invention]
Oxolinic acid and its salts are known as antibacterial agents such as resins, fibers, paints, etc. (JP 9-208408 A, JP 9-176966 A, JP 9-249827 A), but the efficacy is not sufficient depending on the situation of use. There is a need to develop antibacterial agents with higher efficacy.
[0003]
[Means for Solving the Problems]
As a result of repeated studies on an antibacterial agent using oxolinic acid or a salt thereof, the present inventors have found that a composition containing (1) oxolinic acid or a salt thereof and (2) zinc oxide has higher antibacterial activity as an antibacterial agent. It has been found that it can be achieved, and has led to the present invention.
[0004]
That is, the present invention includes (1) oxolinic acid or a salt thereof and (2) zinc oxide as an active ingredient (hereinafter referred to as the present active ingredient) as an antibacterial agent composition (hereinafter referred to as the present invention). The composition of the present invention is treated with a resin product or a resin before molding, and the antibacterial property imparting method of the resin product is characterized by treating the paper product or paper raw material with the composition of the present invention. A method for imparting antibacterial properties to paper products, a method for imparting antibacterial properties to fiber products, characterized by treating the composition of the present invention with fiber products, fibers or fiber raw materials, (1) oxolinic acid or a salt thereof and (2 ) A method for imparting antibacterial properties to resin products, characterized by treating zinc oxide with a resin product or a resin before molding, (1) treating oxolinic acid or a salt thereof and (2) zinc oxide with paper products or paper raw materials thing A method for imparting antibacterial properties to paper products, (1) a method for imparting antibacterial properties to fiber products, characterized by treating oxolinic acid or a salt thereof and (2) zinc oxide into fiber products, fibers or fiber raw materials, and The present invention provides a resin product, a paper product or a fiber product obtained by treating an antibacterial agent composition.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The oxolinic acid used in the present invention has a chemical name of 5-ethyl-5,8-dihydro-8-oxo [1,3] dioxolo [4,5-g] quinoline-7-carboxylic acid. It is an antibacterial compound described in Pesticide Manual 10th edition (published by British Crop Protection Council), page 760.
Oxolinic acid may be used in the form of a salt in the composition of the present invention. Specifically, for example, oxolinic acid alkaline earth metal salts such as calcium oxolinic acid, oxolinic acid alkali metal salts such as sodium oxolinic acid, etc. Can be mentioned.
In the composition of the present invention, the oxolinic acid and its salt may coexist.
[0006]
Examples of the composition of the present invention include various forms such as the active ingredient itself, a preparation containing the active ingredient, a diluted liquid obtained by diluting the active ingredient or the preparation in water or the like.
[0007]
In the composition of the present invention, the ratio of zinc oxide to oxolinic acid or a salt thereof in the active ingredient is usually in the range of 1: 1 to 1: 3000, preferably 1: 1 to 1: 2500 by weight. In the present specification, when the oxolinic acid salt is used, the reference amount is not the weight of the oxolinic acid salt itself but the weight converted to the amount of the oxolinic acid.
[0008]
Examples of the form of the preparation containing this active ingredient can include forms of wettable powders, flowables, powders, etc., and water dilutions of the preparations include dilutions obtained by diluting wettablets, flowables, etc. in water. Liquid.
[0009]
A preparation containing the active ingredient which is one form of the composition of the present invention (hereinafter referred to as the present preparation) is usually prepared by mixing the active ingredient with a solid carrier, a surfactant, etc. It is suitably obtained by a generally known method of adding
[0010]
Usually, this active ingredient (1) oxolinic acid or a salt thereof and (2) zinc oxide are formulated in a mixed state to obtain this formulation, but each is pre-formulated and mixed together. It can also be obtained.
[0011]
Examples of solid carriers that can be used in this preparation include kaolin clay, attapulgite clay, bentonite, montmorillonite, acidic clay, pyrophyllite, talc, diatomaceous earth, calcite, and other minerals, corn cob flour, and walnut shell powder. Natural organic substances such as urea, synthetic organic substances such as urea, salts such as calcium carbonate and ammonium sulfate, and fine powders or granules of synthetic inorganic substances such as synthetic silicon hydroxide.
Surfactants include, for example, alkyl sulfate esters, alkyl (aryl) sulfonates, dialkyl sulfosuccinates, polyoxyethylene alkyl aryl ether phosphates, lignin sulfonates, and naphthalene sulfonate formalin condensation. Nonionic surfactants such as anionic surfactants such as polyoxyethylene alkyl aryl ethers, polyoxyethylene alkyl polyoxypropylene block copolymers, and sorbitan fatty acid esters.
Examples of the formulation adjuvant include dispersants, sticking agents, preservatives, colorants, stabilizers, thickeners, and the like. Specific examples include water-soluble polymers such as polyvinyl alcohol and polyvinylpyrrolidone, Examples include gum arabic, alginic acid or a salt thereof, polysaccharides such as CMC (carboxymethyl cellulose) and xanthan gum, inorganic substances such as aluminum magnesium silicate and alumina sol, PAP (isopropyl acid phosphate), BHT, water and the like.
[0012]
This preparation contains the active ingredient in an amount of usually 0.1% to 90%, preferably 1% to 80%.
[0013]
A diluting solution containing the active ingredient (hereinafter referred to as the diluting solution) is usually obtained by a general method of diluting a wettable powder, a flowable agent or the like in water or the like. It can also be obtained by mixing a dispersant in water and then adding the active ingredient.
[0014]
By treating the composition of the present invention with a resin product or a resin before molding, antibacterial properties can be imparted to the resin product.
The resin product includes, for example, a resin molded body obtained by molding a resin and various general products coated with the resin.
Specific examples of the resin product include tableware and stationery.
The coating treatment in the present invention is one form of resin molding treatment, and specifically is a treatment for coating the surface of a general product with a method such as spraying or coating. Examples of general products include various products that are desired to have antibacterial properties, such as metal products, fiber products, paper products, and wood products. Specific examples of the resin product coated with the resin include a washing tub and binding paper.
Specific examples of the resin include resins such as polyethylene, polypropylene, acrylonitrile butadiene styrene copolymer, and polyethylene terephthalate.
[0015]
As a method for imparting antibacterial properties to a resin product by treating the composition of the present invention, (1) the composition of the present invention is treated with a resin before molding, and the resin treated with the composition of the present invention is molded. (2) A method of treating the resin composition with the composition of the present invention, (3) Treating the composition of the resin with the composition of the present invention, and treating the resin treated with the composition of the present invention into various general products 4. Coating method, (4) A resin product obtained by mixing a resin containing the composition of the present invention obtained by treating the composition of the present invention and a resin not containing the composition of the present invention, and molding the mixed resin And the like.
[0016]
Specific examples of the method of treating the resin before molding with the composition of the present invention and molding the resin treated with the composition of the present invention to obtain a resin product include the following methods.
The composition of the present invention is mixed with a resin such as polyethylene in a molten state, and then the resin is molded using a usual method such as extrusion molding or injection molding.
When the composition of the present invention is mixed with the resin before molding, the present active ingredient may be used as it is, or may be used in the form of the present formulation. The treatment amount of the composition of the present invention at the time of treating the composition of the present invention with a resin is usually 0.1 to 100 g, preferably 1 to 50 g, per 1 kg of the resin, in terms of the amount of the effective component.
[0017]
Specific methods for treating the resin product with the composition of the present invention include the following methods.
The diluted solution is sprayed onto the surface of the resin product using a spray or the like, and then dried to adhere the composition of the present invention. Alternatively, the resin product is immersed in the diluted solution and then dried, and the composition of the present invention is adhered to the surface of the product.
When the composition of the present invention is processed into a resin product, this diluted solution is usually used. When the composition of the present invention is treated on a resin product, the amount of the composition of the present invention attached to the product is usually 0.01 g to 1 g in terms of the amount of the active ingredient per 1 m 2 of the surface of the resin product. In this case, the amount of the active ingredient in the diluent is usually 0.01 to 10 g, preferably 0.1 to 5 g, per liter of the diluent. Moreover, when performing an immersion process, immersion time is about 1 minute to 60 minutes normally.
[0018]
Specific examples of the method of treating the resin with the composition of the present invention and coating the resin treated with the composition of the present invention on various general products include the following methods.
The composition of the present invention is added to a molten resin and mixed to obtain a resin containing the composition of the present invention. A general product such as a metal product, a fiber product, a paper product, or a wood product is immersed in the resin, and the surface thereof is coated with the resin. Further, the surface of a general product may be coated with the resin by spraying the resin with a spray or the like.
When the resin containing the composition of the present invention is coated on a general product, the amount of the composition of the present invention contained in the resin containing the composition of the present invention is usually 0.01 g based on 1 kg of the resin in terms of the amount of the active ingredient. To 10 g, preferably 0.05 g to 5 g.
[0019]
In addition, the present active ingredient (1) oxolinic acid or a salt thereof and (2) zinc oxide can be separately processed into a resin product or a resin before molding. At that time, (1) oxolinic acid or a salt thereof and (2) zinc oxide may be in various forms depending on the treatment, such as the compound itself, various preparations, or a water dilution thereof. Such a treatment method is also an embodiment of the treatment of the antibacterial property imparting method of the present invention.
[0020]
By treating the composition of the present invention with a paper product or a paper raw material, antibacterial properties can be imparted to the paper product.
The paper product as used herein means a paper molded product obtained from various paper raw materials such as natural pulp, chemical pulp, semi-chemical pulp, mechanical pulp, or the like, or a product obtained by processing the molded product. Specific examples of paper products include wallpaper.
[0021]
As a method for imparting antibacterial properties to a paper product by treating the composition of the present invention, (1) a method of treating a paper raw material before molding with the composition of the present invention and producing a paper molded article using the raw material (2) A method of treating the paper product with the composition of the present invention.
[0022]
Specific examples of the method of treating the paper raw material before molding with the composition of the present invention and molding the paper using the paper raw material treated with the composition of the present invention include the following methods.
After mixing the composition of the present invention with pulp, a paper molded body is obtained by a method using a normal papermaking machine or the like.
When the composition of the present invention is mixed with a paper raw material, the composition of the present invention may use the active ingredient as it is, or may be used in the form of the preparation. The processing amount of the composition of the present invention when the composition of the present invention is processed into a paper raw material is usually 0.05 to 50 g, preferably 0.5 to 20 g, per 1 kg of the paper raw material in terms of the amount of the active ingredient.
[0023]
The method for treating the paper product with the composition of the present invention can be performed, for example, by the following method.
The diluted solution is sprayed onto the surface of the paper product using a spray or the like and dried to adhere the composition of the present invention.
When the composition of the present invention is treated on the surface of a paper product, this diluted solution is usually used. When the composition of the present invention is treated on the surface of a paper product, the amount of the composition of the present invention attached to the product is usually 0.005 g to 0.005 g in terms of the amount of the active ingredient per 1 m 2 of the surface of the paper product. 5 g. In this case, the amount of the active ingredient contained in the diluent is usually 0.005 g to 10 g, preferably 0.5 g to 5 g, per liter of the diluent.
[0024]
The active ingredient (1) oxolinic acid or a salt thereof and (2) zinc oxide can be separately processed into a paper product or a paper raw material. At that time, (1) oxolinic acid or a salt thereof and (2) zinc oxide may be in various forms depending on the treatment, such as the compound itself, various preparations, or a water dilution thereof. Such a treatment method is also an embodiment of the treatment of the antibacterial property imparting method of the present invention.
[0025]
By treating the composition of the present invention with a fiber product, fiber or fiber raw material, antibacterial properties can be imparted to the fiber product.
The fiber product here means various products obtained by spinning synthetic fibers and natural fibers. In addition, cloths and nonwoven fabrics obtained by weaving fibers are also included in the textile products. Specific examples of the textile product to be given antibacterial properties include gloves, school uniforms, carpets, and the like.
Here, examples of the fiber material include synthetic fiber materials such as nylon, rayon, and polyester. Examples of the fibers include various synthetic fibers obtained by spinning the raw materials and natural fibers such as cotton, hemp, and silk.
[0026]
As a method for imparting antibacterial properties to a textile by treating the composition of the present invention, for example, (1) a fiber raw material is treated with the composition of the present invention, and the fiber obtained by spinning the raw material is woven. (2) a method for obtaining a fiber product, (2) a method for treating a fiber with the composition of the present invention, drying it and then weaving it to obtain a fiber product, and (3) a method for treating the fiber product with the composition of the present invention. .
[0027]
Specific examples of a method for treating a fiber raw material with the composition of the present invention, spinning the raw material, and weaving the obtained fiber to obtain a fiber product include the following methods.
The composition of the present invention is added to the fiber material and mixed. Thereafter, a fiber product is obtained using a normal spinning and weaving method.
When the composition of the present invention is mixed with the fiber raw material, the composition of the present invention may use the active ingredient as it is, or may be used in the form of the preparation. When the composition of the present invention is treated on the fiber raw material, the amount of the composition of the present invention to be treated with respect to the fiber raw material is usually 0.1 to 100 g, preferably 1 to 50 g per kilogram of the fiber raw material in terms of the amount of the active ingredient. .
[0028]
Examples of the method for treating the fiber or the fiber product with the composition of the present invention include the following methods.
The composition of the present invention is adhered to the surface of the fiber or the fiber product by immersing the fiber or the fiber product in the diluted solution. Alternatively, the composition of the present invention is adhered to the surface of the fiber or fiber product by spraying the diluted solution using a spray or the like and drying it. In any of the above-described methods, when the composition of the present invention is processed into a fiber, the fiber is made into a fiber product by a normal weaving method.
In the case where the composition of the present invention is processed into a fiber or a textile product, this diluted solution is usually used. When the composition of the present invention is treated on a fiber or fiber product, the amount of the composition of the present invention attached to the fiber or fiber product is usually 0.01 g in terms of the amount of the active ingredient per 1 kg of fiber or fiber product. 5g, preferably 0.1g to 5g. In this case, the amount of the active ingredient contained in the diluted solution is usually 0.01 to 10 g, preferably 0.1 to 5 g, per liter of the diluted solution. Moreover, when dipping a fiber or a fiber product, the dipping time is usually about 1 to 60 minutes.
[0029]
In addition, the active ingredient (1) oxolinic acid or a salt thereof and (2) zinc oxide can be separately processed into a fiber product, fiber or fiber raw material. At that time, (1) oxolinic acid or a salt thereof and (2) zinc oxide may be in various forms depending on the treatment, such as the compound itself, various preparations, or a water dilution thereof. Such a treatment method is also an embodiment of the treatment of the antibacterial property imparting method of the present invention.
[0030]
The composition of the present invention can exert high antibacterial activity against bacteria such as Staphylococcus genus such as Staphylococcus aureus, Escherichia genus such as Escherichia coli, Klebsiella genus such as Klebsiella pneumoniae, and Pseudomonas genus such as Pseudomonas aeruginosa.
[0031]
In addition, a product treated with oxolinic acid or a salt thereof may be yellowed under severe conditions such that the product is always exposed to ultraviolet rays, but the product treated with the composition of the present invention may be discolored. Has the effect of suppressing the above.
[0032]
【Example】
EXAMPLES Next, although an Example is given and this invention is demonstrated in detail, this invention is not limited only to the following examples.
In the following examples, all “%” represent “% by weight”.
[0033]
Example 1
2 parts of oxolinic acid, 20 parts of zinc oxide and 1.5 parts of sorbitan trioleate and 28.5 parts of an aqueous solution containing 2 parts of polyvinyl alcohol were mixed and finely pulverized by a wet pulverization method. 38 parts of an aqueous solution containing 0.1 part of aluminum magnesium silicate is added, and further 10 parts of propylene glycol is added and stirred to obtain a flowable preparation.
[0034]
Example 2
A powder is obtained by thoroughly pulverizing and mixing 0.5 parts of oxolinic acid, 5 parts of zinc oxide, 84.5 parts of kaolin clay and 10 parts of talc.
[0035]
Example 3
A wettable powder is obtained by thoroughly grinding and mixing 5 parts of oxolinic acid, 50 parts of zinc oxide, 3 parts of calcium lignin sulfonate, 2 parts of sodium lauryl sulfate and 40 parts of synthetic hydrous silicon oxide.
[0036]
Example 4
A resin plate was produced in accordance with the following method.
1 kg of ABS resin and 10 g of the composition of the present invention (oxolinic acid / zinc oxide = 1 g / 9 g) were put in a plastic bag and mixed by shaking well. The mixture was put into a hopper of an extruder and compounded. The compounded product was dried at 80 ° C. for 3 hours, and then formed into a plate using an injection molding machine.
Extruder: PCM30 (manufactured by Kaigai Co., Ltd.)
Processing temperature: 220-240 ° C
Injection molding machine; SVH-30-50-p (manufactured by Yamashiro Seiki Seisakusho Co., Ltd.)
Processing temperature; 220-230 ° C
[0037]
Test example 1
Each of oxolinic acid, zinc oxide, oxolinic acid and zinc oxide was added to the agar medium so as to have the concentrations shown in Table 1 to prepare a medium. At the same time, an untreated medium in which nothing was added to the medium was also prepared for comparison. These media were streaked with Staphylococcus aureus and cultured at 27 ° C. for 2 days. The degree of growth of the bacteria after 2 days was observed, and the growth inhibition rate (%) was determined according to the criteria shown below. This test was repeated 3 times, and the growth inhibition rate was averaged to obtain the final growth inhibition rate. The results are shown in Table 1.
-Method for calculating growth inhibition rate (%) The size of bacterial colonies grown on the medium was evaluated according to the following criteria. The growth inhibition rate determined in each evaluation stage was used as the growth inhibition rate of the bacteria in Test Examples 1 and 2.
When no bacterial growth is observed: growth inhibition rate 100%,
When bacterial growth is observed at a very small part of the inoculation site: growth inhibition rate of 95%,
When bacterial growth is clearly observed only at the inoculation site: growth inhibition rate 80%,
Bacterial growth is remarkably suppressed compared to untreated, but colonies are expanded from the inoculation site: growth inhibition rate 50%,
When proliferating to the same extent as untreated: growth inhibition rate 0%.
[Table 1]
Test example 2
As in the test with Staphylococcus aureus, prepare a medium supplemented with oxolinic acid, zinc oxide, oxolinic acid and zinc oxide to the concentrations shown in Table 2, and an untreated medium using Escherichia coli. The same test was conducted. The growth inhibition rate was determined according to the criteria shown above. This test was repeated 3 times, and the growth inhibition rate was averaged to obtain the final growth inhibition rate. The results are shown in Table 2.
[Table 2]
[0038]
Test example 3
The resin plate produced in Example 4 was irradiated with ultraviolet rays at 63 ° C. for 2 hours or 4 hours using a sunshine weather meter (Super UV Tester SUV-F1, manufactured by Dainippon Plastics Co., Ltd.), and discolored by ultraviolet rays. The degree of was investigated. As a result, no discoloration was observed in the resin plate irradiated for 2 hours and in the resin plate irradiated for 4 hours.
The conditions for ultraviolet irradiation are as follows.
Irradiation conditions: 63 ° C. × 2-4 hours UV intensity: 100 ± 5 mW / cm 2 al 23 cm
Wavelength: 300 to 450 nm (energy distribution: 360 to 380 nm is the maximum)
[0039]
Test example 4
The following tests were conducted in accordance with the film adhesion method (antibacterial product technical council test method, antibacterial product evaluation test method I).
On each surface of the resin plate (50 mm × 60 mm) prepared in Example 4 and the resin plate without addition of the composition of the present invention prepared in the same manner as in Example 4 except that the composition of the present invention was not added, Escherichia coli the bacterial solution cultured a IFO 3972 0.4 ml (number of cells: about 1.0 to 10 5 / ml) was added dropwise, and infected on the plate. The plate surface was covered with a film (40 mm × 40 mm) and cultured for 1 day under conditions of a temperature of 36 ° C. and a humidity of 90% or more. Thereafter, the number of viable bacteria on the plate was measured.
A similar test was also performed on Staphylococcus aureus ATCC 6538P. The results are summarized in Table 3.
[Table 3]
[0040]
【The invention's effect】
According to the present invention, an antibacterial agent composition capable of exhibiting excellent antibacterial efficacy can be provided, and the product can be obtained by treating the composition with resin products, paper products, textile products, or production raw materials thereof. It is possible to impart effective antibacterial properties to the skin.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001265497A JP4779263B2 (en) | 2000-09-07 | 2001-09-03 | Antibacterial agent composition and method for imparting antibacterial properties |
Applications Claiming Priority (7)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000271144 | 2000-09-07 | ||
| JP2000271144 | 2000-09-07 | ||
| JP2001-8675 | 2001-01-17 | ||
| JP2000-271144 | 2001-01-17 | ||
| JP2001008675 | 2001-01-17 | ||
| JP2001008675 | 2001-01-17 | ||
| JP2001265497A JP4779263B2 (en) | 2000-09-07 | 2001-09-03 | Antibacterial agent composition and method for imparting antibacterial properties |
Publications (2)
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| JP2002284601A JP2002284601A (en) | 2002-10-03 |
| JP4779263B2 true JP4779263B2 (en) | 2011-09-28 |
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| JP6012571B2 (en) * | 2013-02-06 | 2016-10-25 | 大阪ガスケミカル株式会社 | Industrial antibacterial and antifungal composition |
| JP7591865B2 (en) * | 2019-09-11 | 2024-11-29 | 大和化学工業株式会社 | Antibacterial agent for high pressure processing of textiles and method for high pressure antibacterial processing of textiles |
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| JPH09176966A (en) * | 1995-12-26 | 1997-07-08 | Sumitomo Chem Co Ltd | Antibacterial fiber |
| JPH09217297A (en) * | 1996-02-08 | 1997-08-19 | Sumitomo Chem Co Ltd | Antibacterial paper |
| JPH09208408A (en) * | 1996-02-08 | 1997-08-12 | Sumitomo Chem Co Ltd | Antibacterial resin composition |
| JP2002161008A (en) * | 2000-09-13 | 2002-06-04 | Sumitomo Chem Co Ltd | Plant bacterial disease controlling composition |
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