JP2004189874A

JP2004189874A - Germicidal detergent composition

Info

Publication number: JP2004189874A
Application number: JP2002359302A
Authority: JP
Inventors: Kiyoaki Yoshikawa; 清章吉川; Noboru Matsuo; 登松尾; Takashi Itoi; 隆糸井
Original assignee: Kao Corp
Current assignee: Kao Corp
Priority date: 2002-12-11
Filing date: 2002-12-11
Publication date: 2004-07-08
Anticipated expiration: 2022-12-11
Also published as: JP4137620B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a germicidal detergent composition having both excellent germicidal detergent properties and corrosion-protecting properties to a metal, and further having excellent detergency of starch stain. <P>SOLUTION: The germicidal detergent composition comprises (A) a germicidal agent having a cation charge and (B) a silicate, and the ratio (alkalinity/SiO<SB>2</SB>content) of an alkalinity (mg-KOH/g) to a content of SiO<SB>2</SB>(wt.%) is regulated so as to be ≤18. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、殺菌洗浄剤組成物に関する。
【０００２】
【従来の技術】
学校、病院、宿泊施設、食堂等の各種施設や、食品加工工場等の各種工場等では、陶器製のタイル、金属製の壁、床など、殺菌洗浄すべき様々な硬質表面が存在する。また、食品加工工場などでは、一連の加工処理を自動化して行うため、加工機械の殺菌、洗浄は極めて重要である。例えば、米飯製造工場では、米の洗浄（洗米）、炊飯、冷却、包装等の工程を自動化した製造ラインが確立されており、例えば無菌化包装米飯、おにぎり、すし、弁当等の加工食品用米飯、給食用米飯等の製造にこのラインが用いられている。
【０００３】
このような、製造ラインに用いられる各種機械の殺菌、洗浄には、洗浄剤を発泡させて泡状にして適用することが行われる。泡状での洗浄は、洗浄剤の散布状況が目視にて確認できるので、処理箇所が容易に判別でき、また洗浄剤の不必要な飛散を抑制できるという利点がある。また、泡状に塗布することで、洗浄対象における滞留時間が長くなるため、殺菌、洗浄効果が向上する。特許文献１には、泡安定性能と泡保持性能に優れ、泡洗浄に適した殺菌洗浄剤組成物として、特定の界面張力を有する有機溶剤、界面活性剤、殺菌剤及び水を含有する殺菌洗浄剤組成物が開示されている。また、特許文献２には、カチオン電荷を有する殺菌剤を含有する液状殺菌洗浄剤組成物を泡状に吐出させるフォーマー用に充填した泡状殺菌洗浄剤組成物が開示されている。
【０００４】
【特許文献１】
特開平１０−３３０７９２号公報
【特許文献２】
特開平１０−３３０７９９号公報
【０００５】
【発明が解決しようとする課題】
各種加工機械用の殺菌洗浄剤組成物では、優れた殺菌、洗浄効果を有すると共に、金属部材との接触を考慮して、材質の損傷が少ないことが望まれる。しかし、殺菌洗浄性能を向上させようとしてアルカリ度を高くすると、アルマイト等の金属の腐食が発生し、一方、金属腐食を低減しようとすると十分な殺菌洗浄性能が得られないことが多く、殺菌洗浄性能と金属に対する腐食防止性能の両立は困難である。特に、米飯加工工場のように、デンプン汚れが多い被洗浄物では、これらの性能に加え、デンプン汚れに対する洗浄力に優れることも望まれる。
【０００６】
本発明の課題は、殺菌洗浄性能と金属に対する腐食防止性能の両方に優れ、更にデンプン汚れに対する洗浄力に優れた殺菌洗浄剤組成物を提供することである。
【０００７】
【課題を解決するための手段】
本発明は、カチオン電荷を有する殺菌剤（Ａ）〔以下、（Ａ）成分という〕と、珪酸塩（Ｂ）〔以下、（Ｂ）成分という〕とを含有し、アルカリ度（ｍｇＫＯＨ／ｇ）とＳｉＯ_２含有量（重量％）の比が、アルカリ度／ＳｉＯ_２含有量で１８以下である、殺菌洗浄剤組成物に関する。
【０００８】
また、本発明は、上記本発明の殺菌洗浄剤組成物を１〜１０００ｍＬ／水１Ｌの濃度に希釈した水希釈液を発泡させて洗浄対象物に接触させる洗浄方法に関する。
【０００９】
【発明の実施の形態】
（Ａ）成分としては、アルキルアミンの４級化物及びビグアナイド系化合物から選ばれる一種以上が好ましい。アルキルアミンの４級化物としては、ジアルキルジメチルアンモニウムハライド、塩化ベンザルコニウム、塩化ベンゼトニウム及びこれらの対イオンが他のアニオンに置換された化合物等のカチオン界面活性剤系の殺菌剤が好ましく、ビグアナイド系化合物としては、クロルヘキシジン、グルコン酸クロルヘキシジン、ポリヘキサメチレンビグアニジン等のビグアナイド系殺菌剤が好ましい。カチオン界面活性剤系の殺菌剤としては、塩化ベンザルコニウム（例えば、商品名サニゾールＣ、花王（株）製等）、ジアルキルジメチルアンモニウムクロライド（例えば、商品名コータミンＤ１０Ｅ、花王（株）製等）が特に好ましい。また、ビグアナイド系殺菌剤としては、ポリヘキサメチレンビグアニジン塩酸塩が特に好ましい。
【００１０】
（Ｂ）成分としては、珪酸ナトリウム、珪酸カリウム、具体的には、メタ珪酸ナトリウム、オルト珪酸ナトリウム、１号珪酸ナトリウム、２号珪酸ナトリウム、３号珪酸ナトリウム、４号珪酸ナトリウム、１Ｋ珪酸カリウム、２Ｋ珪酸カリウム等が挙げられ、中でも１号珪酸ナトリウム、２号珪酸ナトリウム、３号珪酸ナトリウム、４号珪酸ナトリウム、１Ｋ珪酸カリウム、２Ｋ珪酸カリウムが好ましく、特に、１Ｋ珪酸カリウム、２Ｋ珪酸カリウムが好ましい。
【００１１】
本発明の殺菌洗浄剤組成物は、アルミニウムに対する低い腐食性及び洗浄性の観点から、アルカリ度（ｍｇＫＯＨ／ｇ）とＳｉＯ_２含有量（重量％）の比が、アルカリ度／ＳｉＯ_２含有量で１８以下であり、６〜１８、更に９〜１８、特に１２〜１８が好ましい。また、アルカリ度（ｍｇＫＯＨ／ｇ）は、洗浄性と安全性の観点から、１〜３００、更に５〜２００、特に１０〜１００が好ましい。
【００１２】
ここで、アルカリ度は、１ｇのサンプルをフェノールフタレイン指示薬を使用して塩酸で中和滴定することにより測定され、中和に必要な塩酸のモル数に５６１０８（ＫＯＨ分子量×１０００）を乗じることで得られるものである。アルカリ度／ＳｉＯ_２含有量の比は、金属、特にアルミニウム腐食の指標であり、１８以下であることにより、金属に対して低腐食性で且つ殺菌洗浄力にも優れた組成物が得られる。
【００１３】
本発明の殺菌洗浄剤組成物は、（Ａ）成分を１０ｐｐｍ（重量比、以下同様）〜１０重量％、更に１００ｐｐｍ〜８重量％、特に１０００ｐｐｍ〜５重量％含有することが好ましい。また、（Ｂ）成分の比率は、上記アルカリ度／ＳｉＯ_２含有量の比を考慮して決められるが、本発明の組成物は、（Ｂ）成分をＳｉＯ_２として０．１〜１０重量％、更に０．２〜８重量％、特に０．５〜５重量％含有することが好ましい。
【００１４】
本発明の殺菌洗浄剤組成物は、更に、（Ａ）成分以外の界面活性剤（Ｃ）〔以下、（Ｃ）成分という〕を含有することが好ましい。（Ｃ）成分としては、非イオン界面活性剤及び両性界面活性剤から選ばれる一種以上が好ましい。
【００１５】
非イオン界面活性剤としては、グリセリン脂肪酸エステル、ポリグリセリン脂肪酸エステル、プロピレングリコール脂肪酸エステル、ポリプロピレングリコール脂肪酸エステル、ショ糖脂肪酸エステル、ソルビタン脂肪酸エステル、ポリオキシアルキレンアルキルエーテル、アルキルポリグリコシド等が挙げられ、前記各種脂肪酸エステルの脂肪酸部分の炭素数又はアルキルポリグリコシドのアルキル基の炭素数は６〜２４が好ましく、６〜１８がより好ましい。非イオン界面活性剤としては、製剤化を容易にする観点及び殺菌洗浄性能向上の観点から、ポリグリセリン（好ましくは縮合度２〜５０）脂肪酸（好ましくは炭素数６〜２４）エステル、アルキル（好ましくは炭素数６〜２４）ポリグリコシド、ポリオキシアルキレン（好ましくは炭素数２〜４）アルキル（好ましくは炭素数６〜２４）エーテルが好ましい。更に、製品の安定性の観点から、アルキル（好ましくは炭素数６〜２４）ポリグリコシド、ポリオキシアルキレン（好ましくは炭素数２〜４）アルキル（好ましくは炭素数６〜２４）エーテルが特に好ましい。
【００１６】
両性界面活性剤としては、アルキル（好ましくは炭素数６〜２２）ジメチルアミンオキサイド等のアミンオキサイド、アルキルジメチルアミノ脂肪酸ベタイン、アルキルカルボキシメチルヒドロキシエチルイミダゾリウムベタイン等のベタインなどが挙げられ、アミンオキサイドが好ましい。
【００１７】
（Ｃ）成分は、本発明の殺菌洗浄剤組成物中に１０ｐｐｍ〜５０重量％、更に０．０１〜３０重量％、特に０．１〜２０重量％含有されることが好ましい。
【００１８】
本発明の組成物は、洗浄性と安全性の観点から、１重量％水溶液のｐＨ（２０℃）が７〜１４、更に８〜１３、特に９〜１３であることが好ましい。（Ｂ）成分はｐＨをこの範囲にする量で用いられることが好ましい。
【００１９】
本発明の殺菌洗浄剤組成物には、上記（Ａ）〜（Ｃ）成分以外にも、本発明の効果を損なわない範囲で、香料、色素、増粘剤、酵素、漂白剤、キレート剤、塩素化合物以外の電解質、ビルダー、防錆剤等の成分を含有することができる。なお、通常、本発明の組成物の残部は水である。
【００２０】
本発明の殺菌洗浄剤組成物は、殺菌洗浄性能に優れ、且つ金属に対する損傷性も低いため、幅広い分野での殺菌洗浄に有用である。例えば、病院、養護施設、食品加工工場（米飯加工工場等）、クリーニング施設、厨房等の壁、床、窓等あるいはそれらで用いられる器具、備品、及び製品用（例えば飲料液用）容器等の殺菌に用いられる。
【００２１】
本発明の殺菌洗浄剤組成物は、適当な濃度に希釈して用いられるが、特に、１〜１０００ｍＬ／水１Ｌの濃度に希釈した水希釈液を発泡させて洗浄対象物に接触させる洗浄方法に用いるのが好ましい。この場合、発泡倍率〔泡の体積（ｍＬ）／泡の重量（ｇ）の比〕が３〜５０倍、更に５〜４０倍、特に１０〜４０倍であることが好ましい。
【００２２】
【発明の効果】
本発明によれば、優れた洗浄性、特にデンプン汚れや油性汚れに対する洗浄性と殺菌性とを有し、且つ金属に対する腐食性が低く、特に、加工機械をはじめとする金属製品の殺菌、洗浄に好適に用いられる殺菌洗浄剤組成物が得られる。
【００２３】
【実施例】
実施例１
表１、２に示す液体殺菌洗浄剤組成物を調製し、以下の試験を行った。結果を表１、２に示す。
【００２４】
（１）デンプン汚れ洗浄試験
（１−１）試験法１
市販のレトルト米飯（さとうの御飯）２００ｇを電子レンジで２分間加熱した後、ミキサーの中にイオン交換水２００ｇと共に入れ、１分間撹拌する。その後、更にイオン交換水４００ｇを追加し１分間撹拌する。得られたデンプンスラリーを、市販ガーゼを２枚重ねにしたもので濾過し、試験用のデンプンスラリーを得た。
【００２５】
ＳＵＳ３０４テストピース（３ｃｍ×８ｃｍ）を２４０番サンドペーパーで研磨し、洗浄、乾燥させた後、使用前の該テストピースの重量を測定し、上記試験用デンプンスラリー２．０ｇを２ｃｍ×５ｃｍの面積で塗り広げる。２４時間室温で乾燥させてデンプン汚れが付着したテストピースを作成する。このテストピースの重量を測定しておく。デンプン汚れが付着した該テストピースの重量から、上記使用前のテストピースの重量を差し引いた値が、洗浄前のデンプン量Ｄ_１（ｇ）である。
【００２６】
表１の組成物の１０重量％水溶液を調製し、テストピースの全体を浸漬し、２５℃で１５分放置後、テストピースをすすぎ洗いした。テストピースを乾燥後、重量を測定し、洗浄後の該テストピースの重量から、上記使用前のテストピースの重量を差し引いた値として、洗浄後に付着しているデンプンの量〔洗浄後のデンプン量Ｄ_２（ｇ）〕を算出する。以下の式により洗浄率を算出し、デンプン汚れの洗浄性を評価した。
洗浄率（％）＝（Ｄ_１−Ｄ_２）／Ｄ_１×１００
Ｄ_１：洗浄前のデンプン量（ｇ）
Ｄ_２：洗浄後のデンプン量（ｇ）。
【００２７】
（１−２）試験法２
上記試験法１と同様に試験用のデンプンスラリーを調製する。ＳＵＳ３０４テストピース（３ｃｍ×８ｃｍ）を２４０番サンドペーパーで研磨し、洗浄、乾燥させた後、使用前の該テストピースの重量を測定し、上記試験用デンプンスラリー０．３ｇを２ｃｍ×５ｃｍの面積で塗り広げる。２４時間室温で乾燥させてデンプン汚れが付着したテストピースを作成する。このテストピースの重量を測定しておく。デンプン汚れが付着した該テストピースの重量から、上記使用前のテストピースの重量を差し引いた値が、洗浄前のデンプン量Ｄ_１（ｇ）である。
【００２８】
表２の組成物の１０重量％水溶液をトリガースプレーヤーに充填し、テストピースのデンプン付着面に泡状で噴霧した。このトリガースプレーヤーは１回のストロークで約１ｇの水溶液を噴霧でき、水溶液は発泡倍率が５倍の泡として噴霧される。１５分放置後、テストピースをすすぎ洗いした。テストピースを乾燥後、重量を測定し、洗浄後の該テストピースの重量から、上記使用前のテストピースの重量を差し引いた値として、洗浄後に付着しているデンプンの量〔洗浄後のデンプン量Ｄ_２（ｇ）〕を算出する。試験法１と同様に洗浄率を算出し、デンプン汚れの洗浄性を評価した。
【００２９】
（２）変性油汚れ洗浄試験
表面を２４０番サンドペーパーで研磨し洗浄、乾燥した鉄板（１５ｃｍ×３０ｃｍ）の表面にナタネ油１．５ｇを均一に塗布し、１８０℃のオーブン中で１時間熱処理を行い、変性油汚れテストピースを作成した。この変性油汚れテストピース上に脱脂綿（１ｃｍ×２ｃｍ）を置き、脱脂綿に表１、２の組成物の１０重量％水溶液１ｇを滴下し、２５℃で１５分間放置した。その後、脱脂綿を除去してすすぎ洗いし、鉄板表面の状態を目視で観察し、以下の基準で評価した。
○：油の層が完全に除去されているか、又は膨潤が認められる。
×：油の層にほとんど変化が認められない。
【００３０】
（３）アルマイト腐食試験
アルマイトテストピース（日本テストパネル社製）の約半分を、表１、２の組成物の１０重量％水溶液に浸漬し、２５℃で２４時間放置した後、表面の状態を目視で観察し、以下の基準で評価した。
○：浸漬部分に全く変化が無い。
△：浸漬部分が一部変色している。
×：浸漬部分が全体的に変色ないし異物が付着している。
【００３１】
（４）殺菌性試験
大腸菌（ＥｓｃｈｅｒｉｃｈｉａｃｏｉｌＩＦＯ３９７２）と黄色ブドウ球菌（ＳｔａｐｈｙｌｉｃｏｃｃｕｓａｕｒｅｕｓＩＦＯ１２７３２）を、それぞれＳＣＤ寒天培地（日本製薬（株）製）で３５℃、２４時間前培養した後、形成されたコロニーから菌を一白金耳かきとり、ＳＣＤ寒天培地（日本製薬（株）製）に懸濁して３５℃、２４時間培養した。菌の生育が確認されたら、この懸濁液を遠心洗浄後、適量の滅菌水で約１０^８〜１０^９ｃｅｌｌ／ｍｌの菌濃度に調整して菌液とした。
【００３２】
予め滅菌水を用いて２倍ずつ段階希釈した表１、２の組成物２ｍＬを試験管に用意し、菌液１ｍＬを注ぎ、２５℃で１５分間接触させた。９６穴マイクロシャーレ（コーニングコースター社）に、０．２ｍＬずつ分注した１．０％チオ硫酸ナトリウムを加えたＳＣＤＬＰ培地（日本製薬（株）製）中に細菌と組成物の接触液を直ちに０．０５ｍＬ接種して培養後、組成物を不活性化させ、そのまま３５℃で２４時間培養した。培養後、培養液に濁りが生じない（完全に殺菌できている）最高希釈倍率を最小殺菌濃度として希釈倍率の数値で表した。
【００３３】
【表１】

【００３４】
【表２】

【００３５】
（注）表中の成分は以下のものである。
＊サニゾールＣ：花王（株）製、第４級アンモニウム塩
＊コータミンＤ１０Ｅ：花王（株）製、第４級アンモニウム塩
＊アンヒトール２０Ｎ：花王（株）製、両性界面活性剤
＊アンヒトール２０ＡＢ：花王（株）製、両性界面活性剤
＊アンヒトール２４Ｂ：花王（株）製、両性界面活性剤
＊エマルゲン１２０：花王（株）製、非イオン界面活性剤
＊エマルゲン７０７：花王（株）製、非イオン界面活性剤
＊マイドール１２：花王（株）製、非イオン界面活性剤[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a germicidal detergent composition.
[0002]
[Prior art]
In various facilities such as schools, hospitals, accommodation facilities, canteens, and various factories such as food processing factories, there are various hard surfaces to be sterilized and cleaned, such as ceramic tiles, metal walls and floors. Further, in a food processing factory or the like, since a series of processing is performed automatically, sterilization and cleaning of the processing machine are extremely important. For example, in a cooked rice manufacturing plant, a manufacturing line that automates processes such as washing (rice washing), cooking, cooling, and packaging of rice has been established. For example, aseptic packaged cooked rice, rice balls, sushi, bento, and other processed food rice This line is used for the production of rice for school lunches.
[0003]
For sterilization and cleaning of such various machines used in the production line, the cleaning agent is foamed and applied. Washing in the form of a foam has the advantages that the spraying state of the cleaning agent can be visually checked, so that the processing location can be easily determined and unnecessary scattering of the cleaning agent can be suppressed. In addition, since the application time in the form of foam increases the residence time in the object to be cleaned, the sterilization and cleaning effects are improved. Patent Document 1 discloses a germicidal cleaning composition having excellent interfacial stability and foam holding performance, and suitable for effervescent cleaning, containing an organic solvent having a specific interfacial tension, a surfactant, a germicide and water. An agent composition is disclosed. Further, Patent Literature 2 discloses a foam-type sterilizing detergent composition filled for a foamer which discharges a liquid sterilizing detergent composition containing a disinfectant having a cationic charge into a foam.
[0004]
[Patent Document 1]
JP-A-10-330792 [Patent Document 2]
JP-A-10-330799 [0005]
[Problems to be solved by the invention]
A sterilizing detergent composition for various processing machines is desired to have excellent sterilizing and cleaning effects and to be less damaged in material in consideration of contact with a metal member. However, if the alkalinity is increased to improve the sterilization cleaning performance, corrosion of metals such as alumite will occur, while if it is attempted to reduce metal corrosion, sufficient sterilization cleaning performance cannot often be obtained. It is difficult to achieve both performance and corrosion prevention performance against metal. In particular, in the case of an object to be cleaned having a large amount of starch stains, such as a cooked rice processing plant, in addition to these performances, it is also desired to have excellent detergency against starch stains.
[0006]
An object of the present invention is to provide a germicidal detergent composition which is excellent in both germicidal cleaning performance and corrosion prevention performance for metals, and is also excellent in detergency for starch stains.
[0007]
[Means for Solving the Problems]
The present invention contains a bactericide (A) having a cationic charge (hereinafter, referred to as a component (A)) and a silicate (B) (hereinafter, referred to as a component (B)), and has an alkalinity (mgKOH / g). The present invention relates to a germicidal detergent composition, wherein the ratio between the content and the SiO ₂ content (% by weight) is 18 or less in alkalinity / SiO ₂ content.
[0008]
The present invention also relates to a cleaning method in which a water diluent obtained by diluting the sterilizing detergent composition of the present invention to a concentration of 1 to 1000 mL / 1 L of water is foamed and brought into contact with an object to be cleaned.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
As the component (A), at least one selected from quaternized alkylamines and biguanide compounds is preferable. The quaternized alkylamine is preferably a bactericide based on a cationic surfactant such as dialkyldimethylammonium halide, benzalkonium chloride, benzethonium chloride and a compound in which these counterions are substituted by other anions. As the compound, biguanide bactericides such as chlorhexidine, chlorhexidine gluconate, and polyhexamethylene biguanidine are preferable. Examples of the cationic surfactant-based disinfectant include benzalkonium chloride (for example, trade name Sanisol C, manufactured by Kao Corporation) and dialkyldimethylammonium chloride (for example, trade name Cotamine D10E, manufactured by Kao Corporation). Is particularly preferred. As the biguanide bactericide, polyhexamethylene biguanidine hydrochloride is particularly preferable.
[0010]
As the component (B), sodium silicate and potassium silicate, specifically, sodium metasilicate, sodium orthosilicate, first sodium silicate, second sodium silicate, third sodium silicate, fourth sodium silicate, 1K potassium silicate, 2K potassium silicate and the like can be mentioned, and among them, No. 1 sodium silicate, No. 2 sodium silicate, No. 3 sodium silicate, No. 4 sodium silicate, 1K potassium silicate and 2K potassium silicate are preferable, and 1K potassium silicate and 2K potassium silicate are particularly preferable. .
[0011]
The disinfectant detergent composition of the present invention has a ratio of alkalinity (mgKOH / g) and SiO ₂ content (% by weight) in terms of alkalinity / SiO ₂ content from the viewpoint of low corrosiveness to aluminum and detergency. 18 or less, preferably 6 to 18, more preferably 9 to 18, particularly preferably 12 to 18. Further, the alkalinity (mgKOH / g) is preferably from 1 to 300, more preferably from 5 to 200, particularly preferably from 10 to 100, from the viewpoint of detergency and safety.
[0012]
Here, the alkalinity is measured by neutralizing and titrating a 1 g sample with hydrochloric acid using a phenolphthalein indicator, and multiplying the number of moles of hydrochloric acid required for neutralization by 56108 (KOH molecular weight × 1000). It is obtained by The ratio of alkalinity / SiO ₂ content is an index of corrosion of metals, particularly aluminum, and when it is 18 or less, a composition having low corrosiveness to metals and excellent in sterilizing detergency can be obtained.
[0013]
The germicidal detergent composition of the present invention preferably contains the component (A) in an amount of 10 ppm (weight ratio, the same applies hereinafter) to 10% by weight, more preferably 100 ppm to 8% by weight, particularly preferably 1000 ppm to 5% by weight. Further, the ratio of the component (B) is determined in consideration of the above-mentioned alkalinity / SiO ₂ content ratio, and the composition of the present invention uses 0.1 to 10% by weight of the component (B) as SiO _2. , More preferably 0.2 to 8% by weight, especially 0.5 to 5% by weight.
[0014]
The germicidal detergent composition of the present invention preferably further contains a surfactant (C) other than the component (A) (hereinafter, referred to as the component (C)). As the component (C), at least one selected from nonionic surfactants and amphoteric surfactants is preferable.
[0015]
Examples of the nonionic surfactant include glycerin fatty acid ester, polyglycerin fatty acid ester, propylene glycol fatty acid ester, polypropylene glycol fatty acid ester, sucrose fatty acid ester, sorbitan fatty acid ester, polyoxyalkylene alkyl ether, and alkyl polyglycoside. The carbon number of the fatty acid portion of the various fatty acid esters or the carbon number of the alkyl group of the alkyl polyglycoside is preferably 6 to 24, more preferably 6 to 18. As the nonionic surfactant, polyglycerin (preferably having a degree of condensation of 2 to 50), fatty acid (preferably having 6 to 24 carbon atoms) ester, alkyl (preferably), from the viewpoint of facilitating formulation and improving sterilization and cleaning performance. Is preferably a polyglycoside having 6 to 24 carbon atoms, a polyoxyalkylene (preferably having 2 to 4 carbon atoms) alkyl (preferably having 6 to 24 carbon atoms) ether. Furthermore, from the viewpoint of product stability, alkyl (preferably having 6 to 24 carbon atoms) polyglycoside and polyoxyalkylene (preferably having 2 to 4 carbon atoms) alkyl (preferably having 6 to 24 carbon atoms) ether are particularly preferable.
[0016]
Examples of the amphoteric surfactant include amine oxides such as alkyl (preferably having 6 to 22 carbon atoms) dimethylamine oxide, betaines such as alkyl dimethylamino fatty acid betaine and alkyl carboxymethyl hydroxyethyl imidazolium betaine, and the like. preferable.
[0017]
The component (C) is preferably contained in the germicidal detergent composition of the present invention in an amount of 10 ppm to 50% by weight, more preferably 0.01 to 30% by weight, particularly preferably 0.1 to 20% by weight.
[0018]
In the composition of the present invention, the pH (20 ° C.) of the 1% by weight aqueous solution is preferably 7-14, more preferably 8 to 13, particularly preferably 9 to 13, from the viewpoint of detergency and safety. The component (B) is preferably used in such an amount that the pH falls within this range.
[0019]
In addition to the above components (A) to (C), the germicidal detergent composition of the present invention contains a fragrance, a pigment, a thickener, an enzyme, a bleaching agent, a chelating agent, and the like, as long as the effects of the present invention are not impaired. Components such as an electrolyte, a builder, and a rust preventive other than the chlorine compound can be contained. Usually, the balance of the composition of the present invention is water.
[0020]
The germicidal detergent composition of the present invention is useful for germicidal washing in a wide range of fields because of its excellent germicidal washing performance and low damage to metals. For example, hospitals, nursing homes, food processing factories (rice rice processing factories, etc.), cleaning facilities, kitchen walls and the like, floors, windows, etc., and utensils, fixtures, and products (eg, beverages) containers used therefor. Used for sterilization.
[0021]
The germicidal detergent composition of the present invention is used after being diluted to an appropriate concentration. In particular, the germicidal detergent composition is used in a cleaning method in which a diluted water solution diluted to a concentration of 1 to 1000 mL / 1 L of water is foamed and brought into contact with an object to be cleaned. Preferably, it is used. In this case, the expansion ratio [ratio of foam volume (mL) / foam weight (g)] is preferably 3 to 50 times, more preferably 5 to 40 times, particularly preferably 10 to 40 times.
[0022]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, it has excellent washability, especially washability and sterilization property with respect to starch stains and oily stains, and has low corrosiveness to metals. In particular, sterilization and washing of metal products such as processing machines. Thus, a germicidal detergent composition that is suitably used is obtained.
[0023]
【Example】
Example 1
The liquid sterilizing detergent compositions shown in Tables 1 and 2 were prepared, and the following tests were performed. The results are shown in Tables 1 and 2.
[0024]
(1) Starch dirt washing test (1-1) Test method 1
After heating 200 g of commercially available retort cooked rice (sato rice) in a microwave oven for 2 minutes, put it in a mixer together with 200 g of ion-exchanged water and stir for 1 minute. Thereafter, 400 g of ion-exchanged water is further added and stirred for 1 minute. The obtained starch slurry was filtered with two commercially available gauze layers stacked to obtain a starch slurry for testing.
[0025]
A SUS304 test piece (3 cm × 8 cm) was polished with a No. 240 sandpaper, washed and dried, and the weight of the test piece before use was measured. 2.0 g of the above-mentioned starch slurry for test was 2 cm × 5 cm in area. Spread with. It is dried at room temperature for 24 hours to prepare a test piece to which starch stain has adhered. Measure the weight of this test piece. The value obtained by subtracting the weight of the test piece before use from the weight of the test piece to which the starch stain has adhered is the starch amount D ₁ (g) before washing.
[0026]
A 10% by weight aqueous solution of the composition shown in Table 1 was prepared, the entire test piece was immersed, left at 25 ° C. for 15 minutes, and then the test piece was rinsed. After the test piece is dried, the weight is measured, and the weight of the test piece before use is subtracted from the weight of the test piece after washing to determine the amount of starch adhering after washing (starch amount after washing). D ₂ (g)]. The cleaning rate was calculated by the following formula, and the cleaning property of starch stain was evaluated.
Cleaning rate (%) = (D ₁ −D ₂ ) / D ₁ × 100
D ₁ : Starch amount before washing (g)
D ₂ : starch amount (g) after washing.
[0027]
(1-2) Test method 2
A test starch slurry is prepared in the same manner as in Test Method 1 above. A SUS304 test piece (3 cm × 8 cm) was polished with a No. 240 sandpaper, washed and dried, and the weight of the test piece before use was measured. 0.3 g of the above-mentioned starch slurry for test was 2 cm × 5 cm in area. Spread with. It is dried at room temperature for 24 hours to prepare a test piece to which starch stain has adhered. Measure the weight of this test piece. The value obtained by subtracting the weight of the test piece before use from the weight of the test piece to which the starch stain has adhered is the starch amount D ₁ (g) before washing.
[0028]
A 10% by weight aqueous solution of the composition shown in Table 2 was filled in a trigger sprayer, and sprayed on the starch-adhering surface of the test piece as a foam. This trigger sprayer can spray about 1 g of an aqueous solution in one stroke, and the aqueous solution is sprayed as foam having a foaming ratio of 5 times. After standing for 15 minutes, the test pieces were rinsed. After the test piece is dried, the weight is measured, and the weight of the test piece before use is subtracted from the weight of the test piece after washing to determine the amount of starch adhering after washing (starch amount after washing). D ₂ (g)]. The cleaning rate was calculated in the same manner as in Test Method 1, and the cleaning properties of starch stains were evaluated.
[0029]
(2) Denatured oil stain washing test The surface was polished and washed with No. 240 sandpaper, 1.5 g of rapeseed oil was uniformly applied to the surface of a dried iron plate (15 cm × 30 cm), and heat-treated in a 180 ° C. oven for 1 hour. Was carried out to prepare a denatured oil stain test piece. Absorbent cotton (1 cm × 2 cm) was placed on the denatured oil stain test piece, 1 g of a 10% by weight aqueous solution of the composition of Tables 1 and 2 was dropped on the absorbent cotton, and the mixture was allowed to stand at 25 ° C. for 15 minutes. Thereafter, the absorbent cotton was removed and rinsed, and the state of the iron plate surface was visually observed and evaluated according to the following criteria.
：: The oil layer was completely removed or swelling was observed.
X: Almost no change is observed in the oil layer.
[0030]
(3) Alumite corrosion test Approximately half of alumite test pieces (manufactured by Nippon Test Panel Co., Ltd.) were immersed in a 10% by weight aqueous solution of the compositions shown in Tables 1 and 2, and allowed to stand at 25 ° C. for 24 hours. It was visually observed and evaluated according to the following criteria.
：: There is no change in the immersed part.
Δ: The immersed part is partially discolored.
X: Discoloration or foreign matter is attached to the entire immersed part.
[0031]
(4) Bactericidal test Colonies formed after Escherichia coil IFO3972 and Staphylococcus aureus IFO12732 were precultured on SCD agar medium (manufactured by Nippon Pharmaceutical Co., Ltd.) at 35 ° C. for 24 hours, respectively. A platinum loop was scraped off from the tomato, suspended on an SCD agar medium (manufactured by Nippon Pharmaceutical Co., Ltd.) and cultured at 35 ° C. for 24 hours. After growth of the cells was confirmed, it was used as a cell solution and the suspension was centrifuged washed, adjusted to a cell concentration of about ¹⁰ 8 ~10 9 cell / ^ml in an appropriate amount of sterile water.
[0032]
2 mL of the compositions of Tables 1 and 2 that had been serially diluted twice with sterile water in advance were prepared in test tubes, 1 mL of the bacterial solution was poured, and the cells were contacted at 25 ° C. for 15 minutes. A contact solution of bacteria and the composition was immediately added to a 96-well micro Petri dish (Corning Coaster) in SCDLP medium (manufactured by Nippon Pharmaceutical Co., Ltd.) containing 0.2% dispensed 1.0% sodium thiosulfate. After culturing by inoculating 0.05 mL, the composition was inactivated and cultured at 35 ° C. for 24 hours. After cultivation, the highest dilution ratio at which no turbidity occurred in the culture solution (complete sterilization was possible) was expressed as the minimum dilution ratio as a numerical value of the dilution ratio.
[0033]
[Table 1]

[0034]
[Table 2]

[0035]
(Note) The components in the table are as follows.
* Sanisol C: quaternary ammonium salt manufactured by Kao Corporation * Coatamine D10E: quaternary ammonium salt manufactured by Kao Corporation * Amphitol 20N: amphoteric surfactant manufactured by Kao Corporation * Amphitol 20AB: Kao ( * Amphitol 24B: Kao Corporation, amphoteric surfactant * Emulgen 120: Kao Corporation, nonionic surfactant * Emulgen 707: Kao Corporation, nonionic interface Surfactant * Maidol 12: non-ionic surfactant, manufactured by Kao Corporation

Claims

Fungicides having a cationic charge and (A), and containing a silicate (B), the ratio of alkalinity (mg KOH / g) and SiO ₂ content (wt%) is, alkalinity / SiO ₂ content 18 A germicidal detergent composition comprising:

The germicidal detergent composition according to claim 1, wherein (A) is at least one selected from quaternized alkylamines and biguanide compounds.

The germicidal detergent composition according to claim 1 or 2, further comprising a surfactant (C) other than (A).

The germicidal detergent composition according to any one of claims 1 to 3, wherein (B) is potassium silicate.

A cleaning method comprising foaming a water diluent obtained by diluting the sterilizing detergent composition according to any one of claims 1 to 4 with a concentration of 1 to 1000 mL / 1 L of water and contacting the cleaning object.