JP2004076005A - Detergent composition - Google Patents
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本発明は、各種汚れの除去に好適に使用される洗浄剤組成物で、安全、簡便かつ微弱光源下でも効果があり、特に漂白洗浄剤、水廻り用洗浄剤及びカビ取り用洗浄剤として有用な洗浄剤組成物に関する。 INDUSTRIAL APPLICABILITY The present invention is a detergent composition preferably used for removing various stains, which is safe, simple, and effective even under a weak light source, and is particularly useful as a bleaching detergent, a water-washing detergent, and a mold-removing detergent. Cleaning composition.
従来から、漂白やカビ取り用の洗浄剤としては、酸化能力を有する次亜塩素酸塩、特に次亜塩素酸ナトリウムを活性成分とした洗浄剤が最も多く使用されている。このような次亜塩素酸塩を用いたカビ取り洗浄剤は、効果的にカビを除去できることは一般使用者にも認識されてはいる。しかし、活性成分である次亜塩素酸塩の製品中での安定性を確保するために、製品のｐＨが高く、しかも特有の臭いがあることから、使用時において手袋の着用やマスクの装着、更には充分な換気の実施を促すことが励行されている。 Conventionally, as a cleaning agent for bleaching and mold removal, a hypochlorite having oxidizing ability, particularly a cleaning agent containing sodium hypochlorite as an active ingredient has been most frequently used. It has been recognized by general users that such a mold removing detergent using hypochlorite can effectively remove mold. However, in order to ensure the stability of hypochlorite, which is the active ingredient, in the product, the product has a high pH and has a peculiar smell. Furthermore, it is enforced to encourage the implementation of adequate ventilation.
また、過酸化水素を代表とする過酸化物を用いた漂白洗浄剤も存在するが、一般にカビ等を漂白する能力は、次亜塩素酸塩に比べ低いものである。また、過酸化水素の場合、そのｐＨを１０以上にすると活性酸素種であるＯＯＨ-の生成により、カビ等を漂白する能力は飛躍的に向上するが、安定性に欠けるため、実際にはｐＨを中性以下にするか、若しくは粉末状として使用時に水等に溶解して用いているのが実情である。 There are also bleaching detergents using peroxides typified by hydrogen peroxide, but generally have a lower ability to bleach mold and the like than hypochlorite. Further, in the case of hydrogen peroxide, the pH of OOH which is active oxygen species when more than 10 - by the formation of the ability to bleach mildew, etc. are remarkably improved, due to lack of stability, in fact pH Is neutral or less, or is used in the form of a powder dissolved in water or the like when used.
一方、酸化チタンに代表される光触媒を用いた環境浄化方法が近年、特に注目を集めている。これは、酸化チタン等の光触媒に光が照射されると、価電子帯から電子が伝導帯に励起され、価電子帯にはホール、伝導帯には電子がそれぞれ生成する。生成したホール及び電子は、水及び酸素と反応し、酸化能力が極めて高いヒドロキシラジカルとスーパーオキサイドを生成し、これらが汚染物質を酸化分解して浄化するものであり、有害性がなく、しかも光を利用するクリーンな方法であるために、盛んに研究されている分野である。例えば、特許文献１には、光触媒を含有する洗浄剤が提案されている。しかしながら、酸化チタンに代表される光触媒材料は、一般的に材料のバンドギャップに基づく波長以下の光しか吸収せず、効果的にヒドロキシラジカル等の酸化力の強い活性種を発生させるには、紫外線等の強力な光源が必要であった。 On the other hand, an environmental purification method using a photocatalyst represented by titanium oxide has attracted particular attention in recent years. When a photocatalyst such as titanium oxide is irradiated with light, electrons are excited from the valence band to the conduction band, and holes are generated in the valence band and electrons are generated in the conduction band. The generated holes and electrons react with water and oxygen to generate hydroxyl radicals and superoxides with extremely high oxidizing ability, which oxidatively decompose and purify pollutants, have no harmful effects, and have no harmful effects. This is an area that has been actively researched because it is a clean way to use. For example, Patent Document 1 proposes a cleaning agent containing a photocatalyst. However, a photocatalyst material represented by titanium oxide generally absorbs only light having a wavelength based on the band gap of the material, and in order to effectively generate active species having strong oxidizing power such as hydroxyl radicals, it is necessary to use ultraviolet light. And other powerful light sources.
また、特許文献２及び特許文献３には、光触媒である酸化チタンと過酸化水素を用いる歯牙漂白剤が提案されている。しかしながら、特殊な光源を用いる必要があり、一般的な家庭での使用には限りのあるものであった。
本発明の課題は、特有の臭いが無く、安全で取り扱いが簡便で、しかも一般的な照明である蛍光灯等の微弱光源下でも汚れに対する効果が従来技術と同等以上の洗浄剤、特に漂白洗浄剤、水廻り用洗浄剤あるいはカビ取り用洗浄剤として有用な洗浄剤組成物を提供することにある。 An object of the present invention is to provide a cleaning agent which has no peculiar odor, is safe and easy to handle, and has an effect on stains even under a weak light source such as a fluorescent lamp which is a general illumination, which is equal to or higher than that of the conventional technology, particularly bleaching cleaning. It is an object of the present invention to provide a detergent composition useful as an agent, a detergent for running around water or a detergent for removing mold.
本発明者らは、酸化チタンに代表される光触媒と、酸化剤又は過酸化物に着目し、これらを組み合わせることで、上記の課題を解決できることを見出した。 The present inventors have focused on a photocatalyst represented by titanium oxide, an oxidizing agent or a peroxide, and have found that the above problems can be solved by combining them.
即ち、本発明は、酸化剤又は過酸化物と、光触媒を含有する洗浄剤組成物を提供する。 That is, the present invention provides a detergent composition containing an oxidizing agent or a peroxide and a photocatalyst.
本発明の洗浄剤組成物は、通常の漂白洗浄剤、水廻り用洗浄剤或いはカビ取り用洗浄剤と同様に用いることができ、光の存在下、特に微弱な可視光線のみにおいても、優れた汚染物質の漂白洗浄効果やカビ取り効果を示す。 The detergent composition of the present invention can be used in the same manner as a normal bleaching detergent, a detergent for washing around water or a detergent for removing mold, and is excellent even in the presence of light, especially only in weak visible light. It shows the bleaching and cleaning effect and the mold removal effect of pollutants.
本発明に用いられる酸化剤としては、過酸化水素、過マンガン酸、塩素、塩素酸等が挙げられる。また、過酸化物としては、過酸化水素を発生する過酸化物、あるいは電子を受容することによってラジカルを発生する過酸化物（以下単にラジカルを発生する過酸化物という）が挙げられる。 酸化 Examples of the oxidizing agent used in the present invention include hydrogen peroxide, permanganic acid, chlorine, chloric acid and the like. Examples of the peroxide include a peroxide that generates hydrogen peroxide and a peroxide that generates a radical by accepting an electron (hereinafter, simply referred to as a peroxide that generates a radical).
過酸化水素を発生する過酸化物としては、過炭酸ナトリウム、過硼酸ナトリウム、酒石酸ナトリウム過酸化水素付加物、トリポリリン酸ナトリウム過酸化水素付加物、ピロリン酸ナトリウム過酸化水素付加物、尿素過酸化水素付加物、過酸化ナトリウム、過酸化カルシウム等の水溶液中で過酸化水素を生成するものが挙げられるが、使用する際の安全性を考慮すると、過酸化水素、過炭酸ナトリウム、過硼酸ナトリウムが好ましい。 Examples of peroxides that generate hydrogen peroxide include sodium percarbonate, sodium perborate, sodium tartrate hydrogen peroxide adduct, sodium tripolyphosphate hydrogen peroxide adduct, sodium pyrophosphate hydrogen peroxide adduct, urea hydrogen peroxide Additives, sodium peroxide, those that generate hydrogen peroxide in an aqueous solution such as calcium peroxide, and the like, but in view of safety during use, hydrogen peroxide, sodium percarbonate, and sodium perborate are preferred. .
また、ラジカルを発生する過酸化物としては、過硫酸ナトリウム、過硫酸カリウム、過硫酸アンモニウム及びこれらの混合物など硫酸イオンラジカルを生成するもの等が挙げられる。過硫酸塩は還元電位が過酸化水素より低く、電子をより受容しやすいために、より高い漂白効果が得られる。 (4) Examples of the peroxide that generates radicals include those that generate sulfate ion radicals such as sodium persulfate, potassium persulfate, ammonium persulfate, and mixtures thereof. Persulfate has a lower reduction potential than hydrogen peroxide and is more easily accepting electrons, so that a higher bleaching effect can be obtained.
これらの過酸化物は単独で、また、２種以上を併用して用いても良い。また、過酸化水素を発生する過酸化物と、ラジカルを発生する過酸化物とを併用してもよい。 These peroxides may be used alone or in combination of two or more. Further, a peroxide that generates hydrogen peroxide and a peroxide that generates radicals may be used in combination.
本発明の組成物中の酸化剤又は過酸化物の含有量は、０．００３〜１０重量％が好ましく、より効果的な漂白能を示すためには０．０３重量％以上が更に好ましく、使用した際の体への付着による皮膚へのダメージを考慮すると５重量％以下が更に好ましい。 The content of the oxidizing agent or peroxide in the composition of the present invention is preferably 0.003 to 10% by weight, and more preferably 0.03% by weight or more to exhibit more effective bleaching ability. Considering the damage to the skin due to the adhesion to the body when it is performed, the content is more preferably 5% by weight or less.
また、本発明に用いられる光触媒としては、バンドギャップエネルギーが２．２〜３．５ｅＶの物質、つまり紫外線及び可視光線の照射により、電子が励起するとともに正孔を生じ、これらが水中の溶存酸素や水と反応し、有機物を主とするカビや水廻りの汚染物質を分解する機能が発現するものであれば特に限定されないが、酸化チタンを含むものが好ましく、例えば、ＴｉＯ2（アナターゼ型）、ＴｉＯ2（ルチル型）、ＴｉＯ2（ブルッカイト型）、ＳｒＴｉＯ3、ＣａＴｉＯ3、ＺｎＴｉＯ3、Ｚｎ2ＴｉＯ4、Ｆｅ2ＴｉＯ5、ＣｅＯ−ＴｉＯ2複合酸化物等（以下酸化チタン等という）が挙げられ、ＴｉＯ2が安全上及び安価に入手できる点において好ましい。更に、これらの酸化チタン等に、金属イオン、例えば、Ｃｒ、Ｖ、Ｆｅ、Ｓｎ等をドープしたもの、Ｎ，Ｓ等のアニオンをドープしたもの、また酸素欠陥を導入したもの等、光の吸収する波長を長波長にシフトさせたものであればより好ましい。例えば、特開平９−２６２４８２号公報に開示されているＣｒ、Ｖ、Ｆｅ等がＴｉＯ2表面から内部に含有されているものが例示できる。 The photocatalyst used in the present invention is a substance having a band gap energy of 2.2 to 3.5 eV, that is, irradiation of ultraviolet rays and visible rays excites electrons and generates holes, and these are caused by dissolved oxygen in water. It is not particularly limited as long as it has a function of decomposing mold mainly composed of organic substances and pollutants around water, and is preferably a substance containing titanium oxide, for example, TiO 2 (anatase type) , TiO 2 (rutile type), TiO 2 (brookite type), SrTiO 3 , CaTiO 3 , ZnTiO 3 , Zn 2 TiO 4 , Fe 2 TiO 5 , CeO—TiO 2 composite oxide (hereinafter referred to as titanium oxide, etc.). And TiO 2 is preferable in terms of safety and inexpensive availability. Furthermore, such titanium oxides and the like are doped with metal ions, for example, Cr, V, Fe, Sn, etc., doped with anions such as N and S, and those having oxygen defects introduced therein. It is more preferable that the wavelength to be shifted is shifted to a longer wavelength. For example, a material in which Cr, V, Fe, and the like disclosed in JP-A-9-262482 are contained from the TiO 2 surface to the inside can be exemplified.
更に、本発明に用いられる光触媒は、Ｐｔ、Ａｕ、Ｐｄ、Ａｇ、Ｒｈ、Ｒｕ等から選ばれる少なくとも１種の貴金属又は貴金属化合物（以下、貴金属類という）を含むことがさらに好ましく、例えば、上記の酸化チタン等にこれら貴金属類を担持させた光触媒が、更に効果が向上し、好ましい。これら貴金属類の使用量（担持させる場合の担持量）は、担体である酸化チタン等に対して０．０１〜１０重量％が好ましく、更に好ましくは０．１〜３重量％である。 Further, the photocatalyst used in the present invention more preferably contains at least one noble metal or a noble metal compound (hereinafter, referred to as noble metals) selected from Pt, Au, Pd, Ag, Rh, Ru, and the like. A photocatalyst in which these noble metals are supported on titanium oxide or the like is preferable because the effect is further improved. The amount of these noble metals used (the amount supported when supported) is preferably from 0.01 to 10% by weight, more preferably from 0.1 to 3% by weight, based on the carrier such as titanium oxide.
本発明に用いられる光触媒の一次粒子径は特に限定されないが、１ｎｍ〜１０μｍが好ましく、１〜２００ｎｍが更に好ましい。また、これら光触媒の比表面積は、特に限定されないが、０．１〜５００ｍ2／ｇが好ましく、５０〜３００ｍ2／ｇが、洗浄剤組成物とした際の分散性も良好となるためにより好ましい。 The primary particle diameter of the photocatalyst used in the present invention is not particularly limited, but is preferably 1 nm to 10 μm, more preferably 1 to 200 nm. Further, the specific surface area of these photocatalyst is not particularly limited, but is preferably 0.1~500m 2 / g, 50~300m 2 / g are preferred for the dispersion property as a detergent composition also becomes excellent .
本発明の組成物中の光触媒の含有量は、０．００１〜１０重量％が好ましく、汚染物質への有効性の観点より０．０１重量％以上が更に好ましく、分散安定性の観点から５重量％以下が更に好ましい。 The content of the photocatalyst in the composition of the present invention is preferably 0.001 to 10% by weight, more preferably 0.01% by weight or more from the viewpoint of effectiveness against contaminants, and 5% by weight from the viewpoint of dispersion stability. % Is more preferable.
本発明の洗浄剤組成物は、光触媒に光が照射されると、生成した正孔と水との反応、及び電子と酸化剤又は過酸化物との反応により水酸ラジカルを発生し、これが有機物を主とするカビやその他の汚染物質を強力に分解する。或いは、電子と過酸化物との反応により生成するラジカル、例えば硫酸イオンラジカル、或いは硫酸イオンラジカルが水と反応して生成する水酸ラジカルが、有機物を主とするカビやその他の汚染物質を強力に分解する。 When the photocatalyst is irradiated with light, the cleaning composition of the present invention generates hydroxyl radicals by a reaction between generated holes and water and a reaction between electrons and an oxidizing agent or a peroxide, which is an organic substance. Strongly decomposes mainly mold and other pollutants. Alternatively, radicals generated by the reaction between electrons and peroxide, such as sulfate ion radicals, or hydroxyl radicals generated by reaction of sulfate ion radicals with water, can strongly mold mold and other contaminants, mainly organic substances. Decompose into
ここで、アルカリ性が強くなると、アルカリ中の水酸イオンが、発生した水酸ラジカルをトラップし、水酸ラジカルが汚染物質を分解するのを妨げ、更には、過酸化物の分解が起こり、安定性が悪くなるので、ｐＨが１０未満に調整されていることが好ましく、更にｐＨ８以下の中性領域以下、特にｐＨ１〜８に調整されていることが安全性の面からも好ましい。 Here, when the alkalinity becomes strong, the hydroxyl ions in the alkali trap the generated hydroxyl radicals and prevent the hydroxyl radicals from decomposing the contaminants. It is preferable that the pH be adjusted to less than 10 because it deteriorates the properties, and it is more preferable that the pH be adjusted to a neutral range of pH 8 or lower, particularly pH 1 to 8, in view of safety.
本発明の洗浄剤組成物は、水、及び／又はエタノール、２−プロパノール等の揮発性液体を溶媒又は分散媒として含有する。これらの中では水が好ましい。 洗浄 The cleaning composition of the present invention contains water and / or a volatile liquid such as ethanol and 2-propanol as a solvent or a dispersion medium. Of these, water is preferred.
また、本発明の洗浄剤組成物は、その機能を損なわない程度に界面活性剤を含有しても良い。界面活性剤は、対象となる汚染物質の付着している部位への濡れ性を改善したり、光触媒の分散安定化剤として働く。 The detergent composition of the present invention may contain a surfactant to such an extent that its function is not impaired. The surfactant improves the wettability to the site where the contaminant of interest is attached, and acts as a dispersion stabilizer for the photocatalyst.
本発明に用いられる界面活性剤としては、非イオン性界面活性剤、両性界面活性剤、カチオン性界面活性剤、アニオン性界面活性剤から選ばれる１種乃至２種以上の混合物が挙げられる。 界面 As the surfactant used in the present invention, one or two or more kinds of mixtures selected from nonionic surfactants, amphoteric surfactants, cationic surfactants and anionic surfactants are exemplified.
非イオン界面活性剤としては、ポリオキシエチレンアルキルフェニルエーテル、ポリオキシプロピレンアルキルフェニルエーテル、ポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルキルエステル、ポリエチレングリコールアルキルエステル、ポリエチレングリコール、グリセリン、ソルビトール、アルキルアミンオキサイド等が挙げられ、中でもアルキル部分の炭素数としては６〜２２のものが好ましい。両性界面活性剤としては、アルキル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型等のものが挙げられ、中でも炭素数８〜１８のアルキル基を有するアルキルジメチルアミンオキサイドが好ましい。カチオン性界面活性剤としては、第１級アミン塩、第２級アミン塩、第３級アミン塩、第４級アンモニウム塩が挙げられ、中でも第４級アンモニウム塩が好ましい。アニオン性界面活性剤としては、高級アルコールの硫酸エステル塩、カルボン酸塩、α−オレフィンスルホン化物、アルキルベンゼンスルホン酸塩、アルキルスルホコハク酸ナトリウム、高級アルコールのエチレンオキサイド付加物の硫酸エステル、アルキルフェノール・ポリエチレングリコールエーテルの硫酸エステル等が挙げら、中でも炭素数１０〜２２の高級アルコールの硫酸エステル塩が好ましいが、これら界面活性剤は適宜配合することができる。 Nonionic surfactants include polyoxyethylene alkyl phenyl ether, polyoxypropylene alkyl phenyl ether, polyoxyethylene alkyl ether, polyoxyethylene alkyl ester, polyethylene glycol alkyl ester, polyethylene glycol, glycerin, sorbitol, alkylamine oxide, etc. Among them, those having 6 to 22 carbon atoms in the alkyl portion are preferable. Examples of the amphoteric surfactant include amine oxides such as alkyldimethylamine oxide, betaines such as alkyldimethylamino fatty acid betaine and alkylcarboxymethylhydroxyethyl imidazolium betaine, and among others, alkyl groups having 8 to 18 carbon atoms. Is preferred. Examples of the cationic surfactant include a primary amine salt, a secondary amine salt, a tertiary amine salt, and a quaternary ammonium salt, and among them, a quaternary ammonium salt is preferable. Examples of anionic surfactants include higher alcohol sulfates, carboxylate salts, α-olefin sulfonates, alkylbenzene sulfonates, sodium alkyl sulfosuccinates, higher alcohol ethylene oxide adducts, alkylphenols and polyethylene glycols. Sulfuric esters of ethers and the like are mentioned, and among them, sulfuric ester salts of higher alcohols having 10 to 22 carbon atoms are preferable, but these surfactants can be appropriately blended.
また、本発明の洗浄剤組成物には、汚染部位にて効果を持続させ、付着性を向上させるために、薄膜形成成分或いは増粘剤を適宜配合しても良い。これら薄膜形成成分及び増粘剤としては、光触媒により分解されにくいシリコーン類、変性シリコーン類、フッ素含有ポリマーが挙げられ、具体的には、アルコール変性シリコーン、アミノ変性シリコーン、フッ化ビニリデン、四フッ化エチレン等である。これら薄膜形成成分及び増粘剤は効果を損なわない程度に適宜配合することができる。 In addition, the cleaning composition of the present invention may appropriately contain a thin film forming component or a thickener in order to maintain the effect at the contaminated site and improve the adhesion. Examples of the thin film-forming component and the thickener include silicones, modified silicones, and fluorine-containing polymers that are not easily decomposed by a photocatalyst. Specific examples include alcohol-modified silicone, amino-modified silicone, vinylidene fluoride, and tetrafluoride. And ethylene. These thin film forming components and thickeners can be appropriately blended to such an extent that the effect is not impaired.
本発明の洗浄剤組成物の使用方法としては、トリガー付き容器からのスプレーによる塗布や刷毛による塗布が挙げられ、更に塗布後、乾燥放置して薄膜とする方法、水等により洗い流す方法、又は光触媒による物理的な汚染物質除去が付加的に期待される洗い流す際にスポンジ等で軽くこする方法等が挙げられる。 Examples of the method of using the cleaning composition of the present invention include application by spraying from a container with a trigger and application by a brush, and further, after application, a method of drying and leaving a thin film, a method of rinsing with water or the like, or a photocatalyst. A method of lightly rubbing with a sponge or the like at the time of washing in which physical contaminant removal is expected additionally.
本発明の洗浄剤組成物は、台所、洗面所、浴室、トイレ、洗濯スペース等の家庭における水を扱う場所（以下、水廻りと呼ぶ）や、そこで使われている用具、例えば、ステンレスタブ、水道、洗面器、タイル、窓硝子等の洗浄に優れ、特にカビ取り用の洗浄剤組成物として優れている。 The cleaning composition of the present invention can be used in kitchens, lavatories, bathrooms, toilets, washing spaces and other places where water is handled at home (hereinafter, referred to as a water area), and utensils used there, such as stainless steel tubs. It is excellent in cleaning water, wash basins, tiles, window glass, etc., and is particularly excellent as a detergent composition for removing mold.
本発明の洗浄剤組成物を有効に作用させる為には、微弱な光源があれば良く、日常生活における採光、蛍光灯のわずかな照射、例えば風呂場やトイレ等の弱い照度でも良い。 In order for the cleaning composition of the present invention to work effectively, a weak light source may be used. Lighting in daily life, slight irradiation of a fluorescent lamp, for example, weak illuminance in a bathroom or toilet, etc. may be used.
実施例１
３重量％の過酸化水素水溶液５０ｇに光触媒として酸化チタン（多木化学（株）製、Ａ−１００）を０．５ｇ分散させ、洗浄剤組成物を得た。この酸化チタン分散液のｐＨは４．５であった。
Example 1
0.5 g of titanium oxide (A-100, manufactured by Taki Kagaku Co., Ltd.) was dispersed as a photocatalyst in 50 g of a 3% by weight aqueous hydrogen peroxide solution to obtain a detergent composition. The pH of this titanium oxide dispersion was 4.5.
実施例２
酸化チタンを分散させた３重量％過酸化水素水溶液のｐＨを塩酸にて３に調整した以外は、実施例１と同様にして洗浄剤組成物を得た。
Example 2
A cleaning composition was obtained in the same manner as in Example 1 except that the pH of a 3% by weight aqueous hydrogen peroxide solution in which titanium oxide was dispersed was adjusted to 3 with hydrochloric acid.
実施例３
酸化チタンに貴金属として白金を酸化チタンに対して１重量％担持させたものを用いた以外は、実施例１と同様に洗浄剤組成物を得た。
Example 3
A cleaning composition was obtained in the same manner as in Example 1, except that titanium oxide was used in which platinum was supported as a noble metal by 1% by weight based on titanium oxide.
実施例４
酸化チタンを分散させた過酸化水素水溶液のｐＨを水酸化ナトリウム水溶液により１０．６にしたこと以外は実施例１と同様に洗浄剤組成物を得た。
Example 4
A cleaning composition was obtained in the same manner as in Example 1 except that the pH of the aqueous hydrogen peroxide solution in which titanium oxide was dispersed was adjusted to 10.6 with an aqueous sodium hydroxide solution.
比較例１
実施例１において、３重量％の過酸化水素水溶液５０ｇの代わりに、イオン交換水５０ｇを用いた以外は実施例１と同様にして、洗浄剤組成物を得た。
Comparative Example 1
A cleaning composition was obtained in the same manner as in Example 1, except that 50 g of a 3% by weight aqueous hydrogen peroxide solution was replaced with 50 g of ion-exchanged water.
比較例２
実施例１において、酸化チタンを分散させないで、３重量％の過酸化水素水溶液５０ｇのみを用いて、洗浄剤組成物を得た。
Comparative Example 2
In Example 1, a detergent composition was obtained using only 50 g of a 3% by weight aqueous hydrogen peroxide solution without dispersing titanium oxide.
試験例１
実施例１〜４及び比較例１〜２で得られた洗浄剤組成物、並びに参考例として次亜塩素酸ナトリウム水溶液（有効塩素分濃度：３％）について、以下の方法でカビ除去率を求めた。結果を表１に示す。
Test example 1
With respect to the detergent compositions obtained in Examples 1 to 4 and Comparative Examples 1 and 2, and a sodium hypochlorite aqueous solution (effective chlorine concentration: 3%) as a reference example, the mold removal rate was determined by the following method. Was. Table 1 shows the results.
＜カビ除去率＞
実際に一般家庭における風呂場のガラス窓を固定しているカビの付着したゴムパッキンを採取し、これに洗浄剤組成物を吹き付け、蛍光灯下（３７０ルクス）の室内に３０分間放置し、水で洗浄液を洗い流した。この洗浄剤組成物処理前後での白色度（Ｌ*値）を、色差計（日本電色工業（株）製、ＳＥ２０００型）で測定し、下記の式によりカビ除去率を求めた。
<Mold removal rate>
Actually, a mold packing attached to a glass window of a bathroom in a general household is collected, sprayed with a detergent composition, and left in a room under a fluorescent lamp (370 lux) for 30 minutes. The washing solution was washed away with. The whiteness (L * value) before and after the cleaning composition treatment was measured with a color difference meter (manufactured by Nippon Denshoku Industries Co., Ltd., SE2000 type), and the mold removal rate was determined by the following equation.
カビ除去率（％）＝｛（Ｌ* W−Ｌ* S）／（Ｌ* 0−Ｌ* S）｝×１００
（式中、Ｌ* 0はカビ付着前ゴムパッキンの反射率、Ｌ* Sは洗浄剤組成物処理前のカビ付着ゴムパッキンの反射率、Ｌ* Wは洗浄剤組成物処理後のカビ付着ゴムパッキンの反射率である。）
Mold removal rate (%) = {(L * W− L * S ) / (L * 0− L * S )} × 100
(Where L * 0 is the reflectance of the rubber packing before the mold is attached, L * S is the reflectance of the rubber packing before the treatment with the detergent composition, and L * W is the rubber attached to the mold after the treatment with the detergent composition. (Reflectance of packing.)
実施例５
６００ｐｐｍの過硫酸アンモニウム水溶液５０ｇに、光触媒として酸化チタン（エコデバイス（株）製、ＢＡ−ＰＷ２５）を０．５ｇ分散させ、洗浄剤組成物を得た。この酸化チタン分散液のｐＨは５．０であった。
Example 5
0.5 g of titanium oxide (BA-PW25, manufactured by Eco Devices Co., Ltd.) was dispersed as a photocatalyst in 50 g of a 600 ppm aqueous solution of ammonium persulfate to obtain a detergent composition. The pH of this titanium oxide dispersion was 5.0.
実施例６
光触媒として、酸化チタン（エコデバイス（株）製、ＢＡ−ＰＷ２５）を０．０５ｇ分散させた以外は、実施例５と同様にして洗浄剤組成物を得た。この酸化チタン分散液のｐＨは５．２であった。
Example 6
A cleaning composition was obtained in the same manner as in Example 5, except that 0.05 g of titanium oxide (BA-PW25, manufactured by Eco Device Co., Ltd.) was dispersed as a photocatalyst. The pH of this titanium oxide dispersion was 5.2.
実施例７
光触媒として、酸化チタン（多木化学（株）製、Ａ−１００）０．５ｇを用いた以外は、実施例５と同様にして洗浄剤組成物を得た。この酸化チタン分散液のｐＨは５．０であった。
Example 7
A cleaning composition was obtained in the same manner as in Example 5, except that 0.5 g of titanium oxide (A-100, manufactured by Taki Kagaku Co., Ltd.) was used as the photocatalyst. The pH of this titanium oxide dispersion was 5.0.
実施例８
光触媒として、酸化チタン（多木化学（株）製、Ａ−１００）０．５ｇに貴金属として金を酸化チタンに対して１重量％担持させたものを用いた以外は、実施例５と同様にして洗浄剤組成物を得た。この酸化チタン分散液のｐＨは５．０であった。
Example 8
A photocatalyst was prepared in the same manner as in Example 5, except that 0.5 g of titanium oxide (manufactured by Taki Kagaku Co., Ltd., A-100) was loaded with 1% by weight of gold as a noble metal relative to titanium oxide. Thus, a detergent composition was obtained. The pH of this titanium oxide dispersion was 5.0.
実施例９
６００ｐｐｍの過酸化水素水溶液５０ｇに、光触媒として酸化チタン（エコデバイス（株）製、ＢＡ−ＰＷ２５）を０．５ｇ分散させ、洗浄剤組成物を得た。この酸化チタン分散液のｐＨは５．２であった。
Example 9
0.5 g of titanium oxide (BA-PW25, manufactured by Eco Devices Co., Ltd.) was dispersed as a photocatalyst in 50 g of a 600 ppm aqueous hydrogen peroxide solution to obtain a detergent composition. The pH of this titanium oxide dispersion was 5.2.
実施例１０
光触媒として、酸化チタン（多木化学（株）製、Ａ−１００）０．５ｇを用いた以外は、実施例９と同様にして洗浄剤組成物を得た。この酸化チタン分散液のｐＨは５．４であった。
Example 10
A cleaning composition was obtained in the same manner as in Example 9, except that 0.5 g of titanium oxide (A-100, manufactured by Taki Kagaku Co., Ltd.) was used as the photocatalyst. The pH of this titanium oxide dispersion was 5.4.
比較例３
酸化チタン（多木化学（株）製、Ａ−１００）０．５ｇをイオン交換水５０ｇに分散させたものを洗浄剤組成物とした。
Comparative Example 3
A detergent composition was prepared by dispersing 0.5 g of titanium oxide (A-100, manufactured by Taki Chemical Co., Ltd.) in 50 g of ion-exchanged water.
比較例４
光触媒を含まない６００ｐｐｍの過硫酸アンモニウム水溶液を洗浄剤組成物とした。
Comparative Example 4
A 600 ppm aqueous solution of ammonium persulfate containing no photocatalyst was used as the detergent composition.
試験例２
実施例５〜１０及び比較例３〜４で得られた洗浄剤組成物について、以下の方法で漂白性能を評価した。結果を表２に示す。
Test example 2
The bleaching performance of the cleaning compositions obtained in Examples 5 to 10 and Comparative Examples 3 and 4 was evaluated by the following method. Table 2 shows the results.
＜漂白性能＞
洗浄剤組成物を汚れの目立つ汚染壁に塗布し、蛍光灯下（１９０ ｌｘ）の室内に１２０分間放置した後、布で洗浄剤組成物を拭き取ったときの色相と汚染壁の色相とを分光測色計（ミノルタ製 CM-2002型）により測定し、下記式により色差（ΔE）を求める。
<Bleaching performance>
The cleaning composition was applied to a contaminated wall with conspicuous stains, left in a room under a fluorescent lamp (190 lx) for 120 minutes, and then the hue when the cleaning composition was wiped off with a cloth and the hue of the contaminated wall were spectrally analyzed. The color difference (ΔE) is determined by the following equation using a colorimeter (Minolta CM-2002).
色差（ΔE）＝｛(Ｌ＊Ｓ−Ｌ＊Ｗ)2＋(ａ＊Ｓ−ａ＊Ｗ)2＋(ｂ＊Ｓ−ｂ＊Ｗ)2｝1/2
（式中、Ｌ＊Ｓ、ａ＊Ｓ、ｂ＊Ｓは洗浄剤組成物を塗布する前の汚染壁の色相、Ｌ＊Ｗ、ａ＊Ｗ、ｂ＊Ｗは洗浄剤組成物で処理した後の壁の色相を示す。）
Color difference (ΔE) = {(L * S−L * W) 2 + (a * S−a * W) 2 + (b * S−b * W) 2 } 1/2
(Where L * S, a * S, and b * S are the hues of the contaminated walls before applying the cleaning composition, and L * W, a * W, and b * W are after treatment with the cleaning composition. Indicates the hue of the wall.)
Claims (8)
The cleaning composition according to any one of claims 1 to 7, which is for removing mold.
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