JP4236892B2 - Cleaning composition for light metal and method for cleaning light metal using the same - Google Patents
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Description
【０００１】
【発明の属する技術分野】
本発明は、軽金属が使用されている機器等の洗浄に適した軽金属用洗浄剤組成物に関する。
【０００２】
【従来の技術】
食品工場の壁面や食品製造関連設備などの洗浄には、洗浄成分としてアルカリ成分を含む洗浄剤が一般に用いられている。しかし、アルミニウム等の軽金属が使用されている機器にアルカリ成分を含む洗浄剤を用いると、アルカリ成分によって軽金属が腐食してしまう。そこで従来は、軽金属を腐食させ難いアルカリ成分として、珪酸塩を含有する洗浄剤が用いられてきた。しかし、珪酸塩を含有する洗浄剤を用いると、珪酸塩に由来する難溶性スケールが被洗浄物表面に発生し、装置の外観を悪くするだけでなく、食品製造設備等のセンサーに付着した場合には、その感知性能に支障を与えるという問題があった。また、十分な洗浄力を得るために珪酸塩の含有量を増やすと、軽金属の腐食抑制効果が不十分になるとう問題があった。
これらの問題を解決するため、軽金属を腐食させ難く、珪酸塩を含有しないアルカリ性洗浄剤が提案されている（例えば、特許文献１参照）。しかしながら、この洗浄剤は、長期保存安定性に劣り、また、傾斜面、垂直面、及び天井などの下向きの面に使用すると、流れ落ち又は垂れ落ち易く、洗浄効果が得られるまで被洗浄表面に滞留し難いという問題があった。
【０００３】
【特許文献１】
米国特許第５７１０１２０号明細書
【０００４】
【発明が解決しようとする課題】
従って、本発明の目的は、アルミニウム等の軽金属表面に対する腐食の影響が小さく、難溶性スケールの発生を防止することができ、優れた洗浄力及び長期保存安定性を有し、かつ、軽金属表面に強く付着する洗浄剤組成物を提供することにある。
【０００５】
【課題を解決するための手段】
本発明者らは、鋭意研究を重ねた結果、上記の課題を解決することができた。
即ち、本発明は、
（Ａ）有機スルホン酸塩、
（Ｂ）下記一般式（１）で示される第四級アンモニウム塩、
【化２】
（Ｃ）アルカリ剤、
（Ｄ）酒石酸、クエン酸、グルコン酸、フマル酸、リンゴ酸、乳酸、ホウ酸及びスルファミン酸からなる群より選択される少なくとも１種の有機酸又は無機弱酸、
（Ｅ）アルカリ土類金属又はアルミニウムの塩、
（Ｆ）ホスホン酸類又は高分子分散剤、及び
水を含有する軽金属用洗浄剤組成物であって、
（Ｆ）成分の含有量が０．０５〜１０．０重量％である軽金属用洗浄剤組成物を提供するものである。
【０００６】
また、本発明は、多価アルコール、ポリアルキレングリコール、アルコールエトキシレート、アルキルグリコシド及び糖類からなる群より選択される少なくとも一種（Ｇ）を更に含有する軽金属用洗浄剤組成物を提供するものである。
【０００７】
また、本発明は、（Ａ）成分の含有量が０．１〜３０．０重量％、（Ｂ）成分の含有量が０．１〜３０．０重量％、（Ｃ）成分の含有量が０．１〜４０．０重量％、（Ｄ）成分の含有量が０．１〜１０．０重量％、（Ｅ）成分の含有量が０．０１％〜１０．０重量％、（Ｆ）成分の含有量が０．０５〜５．０重量％、（Ｇ）成分の含有量が０．１〜１０．０重量％、残部が水である軽金属用洗浄剤組成物を提供するものである。
【００１０】
また、本発明は、軽金属用洗浄剤組成物を水で希釈して、軽金属表面に吹きつけることを含む軽金属洗浄方法である。
【００１２】
【発明の実施の形態】
本発明の軽金属用洗浄剤組成物は、（Ａ）有機スルホン酸塩又は有機カルボン酸塩、（Ｂ）第四級アンモニウム塩、（Ｃ）アルカリ剤、（Ｄ）有機酸又は無機弱酸、（Ｅ）アルカリ土類金属又はアルミニウムの塩、（Ｆ）ホスホン酸類又は高分子分散剤及び水を含有する。また、上記の各成分（Ａ）〜（Ｆ）は一種であってもよいし二種以上であってもよい。
尚、本発明の用語「軽金属」とは、アルミニウム、亜鉛、スズ、鉄、銅、鉛等とこれらを含有する合金である。
【００１３】
本発明に用いられる（Ａ）有機スルホン酸塩又は有機カルボン酸塩の具体例としては、キシレンスルホン酸ナトリウム、メタキシレンスルホン酸ナトリウム、トルエンスルホン酸ナトリウム、ベンゼンスルホン酸ナトリウム、パラクロロベンゼンスルホン酸ナトリウム、サリチル酸ナトリウム及びジメチル安息香酸ナトリウム等が挙げられる。これらの中でも、特にメタキシレンスルホン酸ナトリウムが好ましい。
有機スルホン酸塩又は有機カルボン酸塩の含有量は、本発明の組成物中で０．１〜３０．０重量％が好ましく、１．０〜１０．０重量％がより好ましい。この範囲内であれば、ゲル形成が促進されて付着性をより高めることができ、また保存安定性を向上させることができる。
【００１４】
本発明に用いられる（Ｂ）第四級アンモニウム塩としては、下記一般式（１）で示されるものが挙げられるが、これに限定されない。
【化３】
一般式（１）で示される第四級アンモニウム塩の具体例としては、塩化ステアリルトリメチルアンモニウム及び塩化パルミチルトリメチルアンモニウム等が挙げられる。
第四級アンモニウム塩の含有量は、本発明の組成物中で０．１重量％〜３０．０重量％が好ましく、１．０〜１０．０重量％がより好ましい。この範囲内であれば、ゲル形成が促進されて付着性をより高めることができる。
【００１５】
本発明に用いられる（Ｃ）アルカリ剤の具体例としては、水酸化ナトリウム、水酸化カリウム及び炭酸ナトリウム等が挙げられる。
アルカリ剤の含有量は、本発明の組成物中で０．１〜４０．０重量％が好ましく、５．０〜３０．０重量％がより好ましい。
【００１６】
本発明に用いられる（Ｄ）有機酸又は無機弱酸の具体例としては、酒石酸、クエン酸、グルコン酸、フマル酸、リンゴ酸、乳酸、ホウ酸及びスルファミン酸等が挙げられる。これらの中でも、特に酒石酸が好ましい。
有機酸又は無機弱酸の含有量は、本発明の組成物中で０．１〜１０．０重量％が好ましく、０．５〜５．０重量％がより好ましい。この範囲内であれば、組成物のアルカリ度が低下し難く、優れた洗浄力を維持することができる。
【００１７】
本発明に用いる（Ｅ）アルカリ土類金属又はアルミニウムの塩の具体例としては、酢酸カルシウム、塩化カルシウム、塩化バリウム、硫酸マグネシウム及び水酸化アルミニウム等が挙げられる。これらの中でも、特に酢酸カルシウム及び塩化カルシウムが好ましい。
アルカリ土類金属又はアルミニウムの塩の含有量は、本発明の組成物中で０．０１〜１０．０重量％が好ましく、０．０５〜５．０重量％がより好ましい。この範囲内であれば、前記塩は組成物中に容易に溶解し、軽金属の腐食抑制効果をより高めることができる。
【００１８】
本発明に用いる（Ｆ）ホスホン酸類又は高分子分散剤の具体例としては、ホスホノブタントリカルボン酸等のホスホン酸類、ポリアクリル酸、ポリアクリル酸ソーダ、アクリル酸マレイン酸コポリマー、ポリマレイン酸、ポリマレイン酸ソーダ及びポリビニルピロリドン等の高分子分散剤が挙げられる。
ホスホン酸類又は高分子分散剤の含有量は、本発明の組成物中で０．０１〜１０．０重量％が好ましく、０．０５〜５．０重量％がより好ましい。この範囲内であれば、腐食抑制効果を維持しつつ保存安定性をより向上させることができる。
本発明の軽金属用洗浄剤組成物は、上記（Ａ）〜（Ｆ）成分以外に残部として水を含有する。
【００１９】
また、本発明の軽金属用洗浄剤組成物は、多価アルコール、ポリアルキレングリコール、アルコールエトキシレート、アルキルグリコシド及び糖類からなる群より選択される少なくとも一種の成分（Ｇ）を更に含有してもよい。これらの具体例としては、プロピレングリコール、グリセリン及びソルビトール等の多価アルコール、ポリエチレングリコール、アルコールエトキシレート等のオキシアルキレン基を含む化合物やノニオン界面活性剤、グルコース等の糖類、アルキルグリコシド等の糖誘導体を挙げることができる。
多価アルコール、ポリアルキレングリコール、アルコールエトキシレート、アルキルグリコシド及び糖類からなる群より選択される少なくとも一種の成分の含有量は、本発明の組成物中で０．１〜１０．０重量％が好ましく、０．５〜５．０重量％がより好ましい。この範囲内であれば、組成物の保存安定性をより向上させることができる。
【００２０】
本発明の軽金属用洗浄剤組成物は、（Ａ）〜（Ｃ）成分及び水を含有する第一液と（Ｄ）〜（Ｆ）成分及び水を含有する第二液とから成る二液型の洗浄剤として使用することもできる。
二液型の洗浄剤として使用する場合、（Ａ）成分の含有量は、第一液中で０．１〜３０．０重量％が好ましく、１．０〜１０．０％がより好ましい。この範囲内であれば、ゲル形成が促進されて付着性をより高めることができ、また保存安定性を向上させることができる。（Ｂ）成分の含有量は、第一液中で０．１重量％〜３０．０重量％が好ましく、１．０〜１０．０重量％がより好ましい。この範囲内であれば、ゲル形成が促進されて付着性をより高めることができる。（Ｃ）成分の含有量は、第一液中で０．１〜４０．０重量％が好ましく、５．０〜３０．０重量％がより好ましい。また、第一液中の残部は水である。
（Ｄ）成分の含有量は、第二液中で０．１〜５０．０重量％が好ましく、１．０〜３０．０重量％がより好ましい。（Ｅ）成分の含有量は、第二液中で０．０１〜５０．０重量％が好ましく、１．０〜２０．０重量％がより好ましい。（Ｆ）成分の含有量は、第二液中で０．０１〜５０．０重量％が好ましく、１．０〜２０．０重量％がより好ましい。また、第二液中の残部は水である。
また、洗浄に使用する際の第一液と第二液との混合比は、第一液と第二液との重量比で１０００：１〜１：２が好ましい。混合は洗浄時に適宜行い、水で希釈してゲルを形成させ、軽金属表面に適用すればよい。
【００２１】
本発明の軽金属用洗浄剤組成物は、必要に応じて本発明の効果を損なわない範囲でその他の任意成分、例えば、次亜塩素酸ナトリウム等の酸化剤、ノニオン界面活性剤、両性界面活性剤、各種溶剤、ビルダー、防腐剤、ＥＤＴＡ、ＮＴＡ等のキレート剤、殺菌剤、色素、香料等を含有してもよい。
また本発明の軽金属用洗浄剤組成物は、難溶性スケールの発生を防止するために、珪酸ナトリウム、珪酸カリウム等の珪酸塩を含有しないことが好ましい。
【００２２】
本発明の洗浄剤組成物の製造方法は、特に限定する必要はなく、上記（Ａ）〜（Ｇ）成分及び任意成分を水に加えて攪拌する方法などで製造することができる。
【００２３】
本発明の軽金属用洗浄剤組成物は、食品工場等での使用が好ましく、特に食品、飲料等の製造設備での洗浄用途への使用が好ましい。特に軽金属に対する腐食抑制効果が高いので、アルミニウム等の軽金属が使用されている機器の洗浄に好適である。また、本組成物に殺菌剤を含有させることにより、殺菌洗浄用途に用いることもできる。
洗浄に使用する際、本発明の軽金属用洗浄剤組成物を水で希釈してゲルを形成させ、軽金属表面に適用すればよい。洗浄剤組成物と水との希釈割合は、洗浄剤組成物と水との重量比で２：９８〜２０：８０が好ましい。この範囲内であれば、ゲルの形成が促進され、洗浄剤組成物が流れ落ち難くなるので、容易に洗浄効果を発揮することができる。
本発明の軽金属用洗浄剤組成物は、一液型の洗浄剤としても二液型の洗浄剤としても使用することができるが、一液型で使用する場合は、組成物の調製や希釈操作が容易なので、大規模な食品工場等の洗剤使用量が多いところでの使用に好適である。二液型で使用する場合は、共存すると不安定化する成分を分けることができるので、特に保存安定性が向上し、また使用現場の状況に合わせて、第一液と第二液との混合比を選択することができる。例えば、汚れが多い場合には、第一液の割合を大きくして洗浄力を高めるなど、二液型の場合適宜対応し易い。
【００２４】
【実施例】
以下、実施例により本発明を更に詳しく説明するが、本発明はこれらに限定されるものではない。
【００２５】
（一液型洗浄剤）
表１（実施例１〜９）に示す配合成分を水に順に加え、常温下でマグネットスターラーを用い攪拌しながら各洗浄剤組成物を調製した。各成分の配合量は重量％である。これらの洗浄剤組成物について、実際に洗浄に使用する場合と同様に、水で１０倍に希釈してゲルを形成させ、ゲル状の洗浄剤組成物とした。得られたゲル状の洗浄剤組成物を用いて、以下に示す方法により洗浄力試験、腐食試験、スケール付着試験、保存安定性試験を行った。その結果を表１に示す。比較例として表２（比較例１〜７）に示す組成の比較品を実施例と同様にして調製し、実施例と同様の試験を行った。その結果を表２に示す。
【００２６】
＜洗浄力試験＞
ステンレス板に油（牛脂：大豆油＝１：１）を塗布し、一晩室温乾燥したものを試験板とした。ゲル状の洗浄剤組成物を垂直に置いた試験板に吹きつけ、５分後にすすいだ後の汚れの落ち具合を目視により以下の基準で評価した。
○：汚れがほぼ除去された
×：汚れの除去が不十分である
【００２７】
＜腐食試験＞
ゲル状の洗浄剤組成物にアルミニウム板を浸漬し、１時間後引き上げてすすぎを行い、アルミニウム板の外観変化により以下の基準で腐食性を評価した。
○：変化なし
△：所々白く腐食した
×：全体的に白く腐食した
【００２８】
＜スケール付着試験＞
６０℃に加熱したステンレス板に、ゲル状の洗浄剤組成物を吹きつけ５分後にすすぎを行った。この操作を１０回繰り返し、ステンレス板へのスケールの付着具合を目視により以下の基準で評価した。
○：水で行った場合と同じである
△：パネルの所々に白い付着物が付いている
×：パネルの全体的に白い付着物が付いている
【００２９】
＜保存安定性試験＞
ゲル状の洗浄剤組成物をポリプロピレン製容器に入れ、２５℃及び４０℃に保存した。この保存中における溶液の状態変化を以下の基準で評価した。
○：２ヶ月間沈殿無し
△：１ヶ月から２ヶ月の間に沈殿が生じた
×：１ヶ月以内に沈殿が生じた
【表１】
（二液型洗浄剤）
表３（実施例１０〜１３）に示す配合成分を水に順に加え、常温下でマグネットスターラーを用い攪拌しながら第一液及び第二液をそれぞれ調製した。次いで、表３に示す混合比で第一液と第二液を混合し、水で希釈してゲルを形成させ、ゲル状の洗浄剤組成物とした。得られたゲル状の洗浄剤組成物を用いて、前記洗浄力試験、腐食試験、スケール付着試験を行った。各成分の配合量は重量％で示した。その結果を表３に示す。比較例として表４に示す組成の比較品を調製した。比較例では、比較品の各洗浄剤組成物を水で希釈して、１０．０重量％水溶液とし、実施例１０〜１３と同様の試験を行った。その結果を表４に示す。
【表３】
【発明の効果】
本発明によれば、軽金属表面に対する腐食の影響が小さく、難溶性スケールの発生を防止することができ、優れた洗浄力及び長期保存安定性を有し、かつ、軽金属表面に強く付着する洗浄剤組成物を提供することができる。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cleaning composition for light metals suitable for cleaning equipment and the like in which light metals are used.
[0002]
[Prior art]
A cleaning agent containing an alkaline component as a cleaning component is generally used for cleaning a wall of a food factory or a food manufacturing equipment. However, when a cleaning agent containing an alkali component is used in a device in which a light metal such as aluminum is used, the light metal is corroded by the alkali component. Therefore, conventionally, a detergent containing silicate has been used as an alkali component that hardly corrodes light metals. However, when a silicate-containing cleaning agent is used, a poorly soluble scale derived from silicate is generated on the surface of the object to be cleaned, not only deteriorating the appearance of the device but also adhering to sensors such as food production equipment Has a problem of hindering its sensing performance. Further, when the silicate content is increased to obtain sufficient detergency, there is a problem that the light metal corrosion inhibition effect becomes insufficient.
In order to solve these problems, an alkaline cleaning agent that does not easily corrode light metals and does not contain silicate has been proposed (for example, see Patent Document 1). However, this cleaning agent is inferior in long-term storage stability, and when used on downward surfaces such as inclined surfaces, vertical surfaces, and ceilings, this cleaning agent tends to flow or sag and stays on the surface to be cleaned until a cleaning effect is obtained. There was a problem that it was difficult.
[0003]
[Patent Document 1]
US Pat. No. 5,710,120
[Problems to be solved by the invention]
Therefore, the object of the present invention is to reduce the influence of corrosion on light metal surfaces such as aluminum, to prevent the generation of hardly soluble scale, to have excellent cleaning power and long-term storage stability, and to the light metal surface. It is to provide a cleaning composition that adheres strongly.
[0005]
[Means for Solving the Problems]
As a result of intensive studies, the present inventors have been able to solve the above problems.
That is, the present invention
(A) an organic sulfonic acid salt,
(B) a quaternary ammonium salt represented by the following general formula (1) :
[Chemical formula 2]
(C) alkaline agent,
(D) at least one organic acid or inorganic weak acid selected from the group consisting of tartaric acid, citric acid, gluconic acid, fumaric acid, malic acid, lactic acid, boric acid and sulfamic acid ,
(E) an alkaline earth metal or aluminum salt;
(F) A detergent composition for light metals containing a phosphonic acid or polymer dispersant, and water ,
(F) It provides the cleaning composition for light metals whose content of a component is 0.05-10.0 weight% .
[0006]
The present invention also provides a light metal detergent composition further comprising at least one (G) selected from the group consisting of polyhydric alcohols, polyalkylene glycols, alcohol ethoxylates, alkyl glycosides and saccharides. .
[0007]
In the present invention, the content of component (A) is 0.1 to 30.0% by weight, the content of component (B) is 0.1 to 30.0% by weight, and the content of component (C) is 0.1 to 40.0 wt%, (D) component content is 0.1 to 10.0 wt%, (E) component content is 0.01% to 10.0 wt%, (F) content of the component 0.0 5-5. The present invention provides a detergent composition for light metals, comprising 0% by weight, 0.1 to 10.0% by weight of component (G), and the balance being water.
[0010]
Further, the present invention is a light metal detergent composition is diluted with water, a light metal cleaning method comprising Rukoto sprayed on light metal surface.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
The detergent composition for light metals of the present invention comprises (A) an organic sulfonate or an organic carboxylate, (B) a quaternary ammonium salt, (C) an alkali agent, (D) an organic acid or an inorganic weak acid, (E ) Alkaline earth metal or aluminum salt, (F) phosphonic acid or polymer dispersant and water. Moreover, said component (A)-(F) may be 1 type, and 2 or more types may be sufficient as it.
The term “light metal” in the present invention is aluminum, zinc, tin, iron, copper, lead and the like and alloys containing them.
[0013]
Specific examples of (A) organic sulfonate or organic carboxylate used in the present invention include sodium xylene sulfonate, sodium metaxylene sulfonate, sodium toluene sulfonate, sodium benzene sulfonate, sodium parachlorobenzene sulfonate, Examples include sodium salicylate and sodium dimethylbenzoate. Among these, sodium metaxylene sulfonate is particularly preferable.
0.1-30.0 weight% is preferable in the composition of this invention, and, as for content of organic sulfonate or organic carboxylate, 1.0-10.0 weight% is more preferable. If it is in this range, gel formation is accelerated | stimulated, adhesiveness can be improved more, and storage stability can be improved.
[0014]
Examples of the (B) quaternary ammonium salt used in the present invention include, but are not limited to, those represented by the following general formula (1).
[Chemical 3]
Specific examples of the quaternary ammonium salt represented by the general formula (1) include stearyl trimethyl ammonium chloride and palmityl trimethyl ammonium chloride.
The content of the quaternary ammonium salt is preferably 0.1 to 30.0% by weight, more preferably 1.0 to 10.0% by weight in the composition of the present invention. If it exists in this range, gel formation will be accelerated | stimulated and adhesiveness can be improved more.
[0015]
Specific examples of the alkali agent (C) used in the present invention include sodium hydroxide, potassium hydroxide and sodium carbonate.
0.1-40.0 weight% is preferable in the composition of this invention, and, as for content of an alkaline agent, 5.0-30.0 weight% is more preferable.
[0016]
Specific examples of (D) organic acids or inorganic weak acids used in the present invention include tartaric acid, citric acid, gluconic acid, fumaric acid, malic acid, lactic acid, boric acid, and sulfamic acid. Among these, tartaric acid is particularly preferable.
0.1-10.0 weight% is preferable in the composition of this invention, and, as for content of an organic acid or an inorganic weak acid, 0.5-5.0 weight% is more preferable. If it exists in this range, the alkalinity of a composition will not fall easily and it can maintain the outstanding detergency.
[0017]
Specific examples of the (E) alkaline earth metal or aluminum salt used in the present invention include calcium acetate, calcium chloride, barium chloride, magnesium sulfate and aluminum hydroxide. Among these, calcium acetate and calcium chloride are particularly preferable.
The content of the alkaline earth metal or aluminum salt is preferably 0.01 to 10.0% by weight, more preferably 0.05 to 5.0% by weight in the composition of the present invention. If it exists in this range, the said salt will melt | dissolve in a composition easily and can improve the corrosion inhibitory effect of a light metal more.
[0018]
Specific examples of (F) phosphonic acids or polymer dispersants used in the present invention include phosphonic acids such as phosphonobutanetricarboxylic acid, polyacrylic acid, sodium polyacrylate, maleic acrylate copolymer, polymaleic acid, polymaleic acid Examples thereof include polymer dispersants such as soda and polyvinylpyrrolidone.
The content of the phosphonic acid or polymer dispersant is preferably 0.01 to 10.0% by weight, more preferably 0.05 to 5.0% by weight in the composition of the present invention. Within this range, the storage stability can be further improved while maintaining the corrosion inhibition effect.
The detergent composition for light metals of this invention contains water as a remainder other than said (A)-(F) component.
[0019]
The light metal detergent composition of the present invention may further contain at least one component (G) selected from the group consisting of polyhydric alcohols, polyalkylene glycols, alcohol ethoxylates, alkyl glycosides and saccharides. . Specific examples thereof include polyhydric alcohols such as propylene glycol, glycerin and sorbitol, compounds containing oxyalkylene groups such as polyethylene glycol and alcohol ethoxylate, nonionic surfactants, sugars such as glucose, and sugar derivatives such as alkyl glycosides. Can be mentioned.
The content of at least one component selected from the group consisting of polyhydric alcohols, polyalkylene glycols, alcohol ethoxylates, alkyl glycosides and saccharides is preferably 0.1 to 10.0% by weight in the composition of the present invention. 0.5 to 5.0% by weight is more preferable. Within this range, the storage stability of the composition can be further improved.
[0020]
The detergent composition for light metals of the present invention is a two-part type comprising a first liquid containing components (A) to (C) and water, and a second liquid containing components (D) to (F) and water. It can also be used as a cleaning agent.
When used as a two-component cleaning agent, the content of the component (A) is preferably 0.1 to 30.0% by weight in the first solution, and more preferably 1.0 to 10.0%. If it is in this range, gel formation is accelerated | stimulated, adhesiveness can be improved more, and storage stability can be improved. The content of the component (B) is preferably 0.1% by weight to 30.0% by weight and more preferably 1.0-10.0% by weight in the first liquid. Within this range, gel formation is promoted and adhesion can be further enhanced. The content of the component (C) is preferably 0.1 to 40.0% by weight in the first liquid, and more preferably 5.0 to 30.0% by weight. The balance in the first liquid is water.
The content of the component (D) is preferably 0.1 to 50.0% by weight in the second liquid, and more preferably 1.0 to 30.0% by weight. The content of the component (E) is preferably 0.01 to 50.0% by weight in the second liquid, and more preferably 1.0 to 20.0% by weight. The content of the component (F) is preferably 0.01 to 50.0% by weight in the second liquid, and more preferably 1.0 to 20.0% by weight. The balance in the second liquid is water.
Moreover, the mixing ratio of the first liquid and the second liquid when used for washing is preferably 1000: 1 to 1: 2 in terms of the weight ratio of the first liquid and the second liquid. Mixing is appropriately performed at the time of washing, diluted with water to form a gel, and applied to the surface of the light metal.
[0021]
The detergent composition for light metals of the present invention is, as necessary, other optional components as long as the effects of the present invention are not impaired, for example, an oxidizing agent such as sodium hypochlorite, a nonionic surfactant, and an amphoteric surfactant. , Various solvents, builders, preservatives, chelating agents such as EDTA and NTA, bactericides, pigments, fragrances and the like.
Moreover, in order to prevent generation | occurrence | production of a hardly soluble scale, it is preferable that the detergent composition for light metals of this invention does not contain silicates, such as sodium silicate and potassium silicate.
[0022]
The manufacturing method of the cleaning composition of this invention does not need to specifically limit, It can manufacture by the method of adding the said (A)-(G) component and arbitrary components to water, and stirring.
[0023]
The detergent composition for light metals of the present invention is preferably used in food factories and the like, and particularly preferably used for cleaning purposes in production facilities such as foods and beverages. In particular, since it has a high corrosion-inhibiting effect on light metals, it is suitable for cleaning equipment that uses light metals such as aluminum. Moreover, it can also be used for a sterilization washing | cleaning use by making this composition contain a bactericide.
When used for washing, the detergent composition for light metal of the present invention may be diluted with water to form a gel and applied to the surface of the light metal. The dilution ratio of the cleaning composition to water is preferably 2:98 to 20:80 in terms of the weight ratio of the cleaning composition to water. Within this range, gel formation is promoted and the cleaning composition is less likely to flow down, so that the cleaning effect can be easily exerted.
The light metal cleaning composition of the present invention can be used as a one-pack type or a two-pack type cleaning agent. Therefore, it is suitable for use at a large amount of detergent used in a large-scale food factory. When using in the two-pack type, components that destabilize when coexisting can be separated, so the storage stability is particularly improved, and the first and second liquids are mixed according to the situation at the site of use. A ratio can be selected. For example, when there is a lot of dirt, it is easy to cope with the case of the two-pack type as appropriate, such as increasing the ratio of the first liquid to increase the cleaning power.
[0024]
【Example】
EXAMPLES Hereinafter, although an Example demonstrates this invention in more detail, this invention is not limited to these.
[0025]
(One-component cleaning agent)
The ingredients shown in Table 1 (Examples 1 to 9) were sequentially added to water, and each detergent composition was prepared with stirring using a magnetic stirrer at room temperature. The amount of each component is% by weight. About these cleaning composition, similarly to the case where it actually uses for washing | cleaning, it diluted with water 10 times and formed the gel, and it was set as the gel-like cleaning composition. Using the resulting gel-like cleaning composition, a cleaning power test, a corrosion test, a scale adhesion test, and a storage stability test were performed by the following methods. The results are shown in Table 1. As comparative examples, comparative products having the compositions shown in Table 2 (Comparative Examples 1 to 7) were prepared in the same manner as in Examples, and the same tests as in Examples were performed. The results are shown in Table 2.
[0026]
<Detergency test>
A test plate was prepared by applying oil (beef tallow: soybean oil = 1: 1) to a stainless steel plate and drying overnight at room temperature. The gel-like cleaning composition was sprayed on a test plate placed vertically, and the degree of soil removal after rinsing after 5 minutes was visually evaluated according to the following criteria.
○: Dirt is almost removed ×: Dirt is not sufficiently removed. [0027]
<Corrosion test>
The aluminum plate was immersed in a gel-like cleaning composition, and after 1 hour, the aluminum plate was rinsed and rinsed. Corrosivity was evaluated according to the following criteria by changing the appearance of the aluminum plate.
○: No change △: White corroded in some places ×: White corroded as a whole [0028]
<Scale adhesion test>
The gel-like cleaning composition was sprayed on the stainless steel plate heated to 60 ° C., and rinsed after 5 minutes. This operation was repeated 10 times, and the adhesion of the scale to the stainless steel plate was visually evaluated according to the following criteria.
○: Same as when performed with water. △: There are white deposits on the panel. ×: The panel has white deposits as a whole.
<Storage stability test>
The gel-like cleaning composition was placed in a polypropylene container and stored at 25 ° C and 40 ° C. Changes in the state of the solution during storage were evaluated according to the following criteria.
○: No precipitation for 2 months Δ: Precipitation occurred between 1 and 2 months ×: Precipitation occurred within 1 month [Table 1]
(Two-component cleaning agent)
The formulation components shown in Table 3 (Examples 10 to 13) were sequentially added to water, and a first solution and a second solution were prepared while stirring at room temperature using a magnetic stirrer. Next, the first liquid and the second liquid were mixed at a mixing ratio shown in Table 3, and diluted with water to form a gel, thereby obtaining a gel-like cleaning composition. Using the gel detergent composition thus obtained, the detergency test, corrosion test, and scale adhesion test were performed. The blending amount of each component is shown in wt%. The results are shown in Table 3. As a comparative example, a comparative product having the composition shown in Table 4 was prepared. In the comparative example, each cleaning composition of the comparative product was diluted with water to obtain a 10.0 wt% aqueous solution, and the same tests as in Examples 10 to 13 were performed. The results are shown in Table 4.
[Table 3]
【The invention's effect】
According to the present invention, the influence of corrosion on the light metal surface is small, the occurrence of hardly soluble scale can be prevented, the cleaning agent has excellent cleaning power and long-term storage stability, and adheres strongly to the light metal surface. A composition can be provided.
Claims (4)
（Ｂ）下記一般式（１）で示される第四級アンモニウム塩、
（Ｃ）アルカリ剤、
（Ｄ）酒石酸、クエン酸、グルコン酸、フマル酸、リンゴ酸、乳酸、ホウ酸及びスルファミン酸からなる群より選択される少なくとも１種の有機酸又は無機弱酸、
（Ｅ）アルカリ土類金属又はアルミニウムの塩、
（Ｆ）ホスホン酸類又は高分子分散剤、及び
水を含有する軽金属用洗浄剤組成物であって、
（Ｆ）成分の含有量が０．０５〜１０．０重量％である軽金属用洗浄剤組成物。(A) an organic sulfonate,
(B) a quaternary ammonium salt represented by the following general formula (1):
(C) alkaline agent,
(D) at least one organic acid or inorganic weak acid selected from the group consisting of tartaric acid, citric acid, gluconic acid, fumaric acid, malic acid, lactic acid, boric acid and sulfamic acid,
(E) an alkaline earth metal or aluminum salt;
(F) A detergent composition for light metals containing a phosphonic acid or polymer dispersant, and water,
(F) The cleaning composition for light metals whose content of a component is 0.05-10.0 weight%.
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| US7895902B2 (en) | 2008-01-15 | 2011-03-01 | Kabushiki Kaisha Toshiba | Electromagnetic flow meter including circumferential grooves on an inner surface of a measurement pipe for fixing a liner |
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| BRPI0520172B1 (en) | 2005-06-01 | 2019-10-22 | Ecolab Inc | surface cleaning composition which is susceptible to corrosion in alkaline liquids, aqueous concentrate, aqueous solutions and surface cleaning method |
| JP4794920B2 (en) * | 2005-06-21 | 2011-10-19 | 花王株式会社 | Aqueous liquid detergent composition |
| JP4907180B2 (en) * | 2006-01-27 | 2012-03-28 | 花王株式会社 | Aqueous liquid detergent composition |
| JP4866275B2 (en) * | 2007-03-16 | 2012-02-01 | 学校法人近畿大学 | Detergent for metal products and aqueous solution for metal products |
| JP5197988B2 (en) * | 2007-04-11 | 2013-05-15 | 花王株式会社 | Aqueous liquid detergent composition |
| JP2009035599A (en) * | 2007-07-31 | 2009-02-19 | Kao Corp | Method for cleaning hard surface |
| CN102292428B (en) * | 2009-01-30 | 2014-06-04 | 埃科莱布有限公司 | Development of an aluminum hydroxycarboxylate builder |
| JP5691039B2 (en) * | 2011-06-16 | 2015-04-01 | 中部キレスト株式会社 | Corrosion inhibitor composition for acid cleaning |
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| CN111334807A (en) * | 2018-12-19 | 2020-06-26 | 深圳市天正隆科技有限公司 | Online cleaning agent for automobile radiator welding, preparation and radiator welding process |
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| US7895902B2 (en) | 2008-01-15 | 2011-03-01 | Kabushiki Kaisha Toshiba | Electromagnetic flow meter including circumferential grooves on an inner surface of a measurement pipe for fixing a liner |
| CN101487727B (en) * | 2008-01-15 | 2013-09-04 | 株式会社东芝 | Electromagnetic flow meter |
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