JPH04304392A - Cleaning agent for aluminum fin - Google Patents
Cleaning agent for aluminum finInfo
- Publication number
- JPH04304392A JPH04304392A JP9294991A JP9294991A JPH04304392A JP H04304392 A JPH04304392 A JP H04304392A JP 9294991 A JP9294991 A JP 9294991A JP 9294991 A JP9294991 A JP 9294991A JP H04304392 A JPH04304392 A JP H04304392A
- Authority
- JP
- Japan
- Prior art keywords
- weight
- water
- acid
- cleaning agent
- organic solvent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 24
- 239000012459 cleaning agent Substances 0.000 title claims abstract description 24
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims abstract description 24
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims abstract description 21
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003960 organic solvent Substances 0.000 claims abstract description 13
- 239000005711 Benzoic acid Substances 0.000 claims abstract description 12
- 235000010233 benzoic acid Nutrition 0.000 claims abstract description 12
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 9
- 239000004094 surface-active agent Substances 0.000 claims abstract description 9
- 239000011259 mixed solution Substances 0.000 claims abstract description 7
- 235000006408 oxalic acid Nutrition 0.000 claims abstract description 7
- 238000000034 method Methods 0.000 claims abstract description 4
- 239000000203 mixture Substances 0.000 claims description 17
- 230000007797 corrosion Effects 0.000 claims description 14
- 238000005260 corrosion Methods 0.000 claims description 14
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 claims description 9
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical group OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 8
- DBVJJBKOTRCVKF-UHFFFAOYSA-N Etidronic acid Chemical compound OP(=O)(O)C(O)(C)P(O)(O)=O DBVJJBKOTRCVKF-UHFFFAOYSA-N 0.000 claims description 6
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 230000003472 neutralizing effect Effects 0.000 claims description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 2
- 239000001569 carbon dioxide Substances 0.000 claims description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 2
- 239000003599 detergent Substances 0.000 claims description 2
- 229960004592 isopropanol Drugs 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 abstract description 7
- 239000013078 crystal Substances 0.000 abstract description 4
- 239000000243 solution Substances 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 13
- -1 polyoxyethylene Polymers 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 3
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 3
- 229910052910 alkali metal silicate Inorganic materials 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 3
- 229910017604 nitric acid Inorganic materials 0.000 description 3
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 229920001214 Polysorbate 60 Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 150000005215 alkyl ethers Chemical class 0.000 description 1
- 125000005037 alkyl phenyl group Chemical group 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000002736 nonionic surfactant Substances 0.000 description 1
- 229920002523 polyethylene Glycol 1000 Polymers 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 235000011181 potassium carbonates Nutrition 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 229940086066 potassium hydrogencarbonate Drugs 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/12—Light metals
- C23G1/125—Light metals aluminium
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- ing And Chemical Polishing (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は空調機等のアルミフィン
上に生じるアルミニウムの腐食生成物および付着物を除
去するための組成物並びに除去方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a composition and method for removing aluminum corrosion products and deposits formed on aluminum fins of air conditioners and the like.
【０００２】0002
【従来の技術】アルミフィンの清浄剤としては塩基性の
アルカリシリケート系のものや、酸性のフッ化水素系お
よび硝酸系のものが一般的に用いられている。これらの
清浄剤は刷毛塗り、もしくはエアゾールやスプレーガン
等で吹き付けることにより使用されるが、時には加圧水
による物理的な剥離力を併用する場合もある。BACKGROUND OF THE INVENTION As cleaning agents for aluminum fins, basic alkali silicate-based cleaning agents and acidic hydrogen fluoride-based and nitric acid-based cleaning agents are generally used. These cleaning agents are applied by brushing or spraying with an aerosol or spray gun, but sometimes a physical peeling force using pressurized water is also used.
【０００３】0003
【発明が解決しようとする課題】従来、アルミフィン清
浄剤としては、アルカリシリケート系、フッ化水素およ
び硝酸系洗浄剤等が使用されているが、アルカリシリケ
ート系アルミフィン清浄剤では油汚れは洗浄できるが、
腐食生成物を除去することはできない。またフッ化水素
および硝酸系洗浄剤は、空調機およびその近辺の部材を
いためたり、作業に危険がともなうことなどから、容易
に腐食生成物が除去でき、且つ安全に使用できる薬剤が
望まれている。[Problems to be Solved by the Invention] Conventionally, alkali silicate-based, hydrogen fluoride, and nitric acid-based detergents have been used as aluminum fin cleaners, but alkali silicate-based aluminum fin cleaners can only remove oil stains. You can, but
Corrosion products cannot be removed. In addition, hydrogen fluoride and nitric acid-based cleaning agents can damage air conditioners and nearby components, and can be dangerous to work with, so there is a need for agents that can easily remove corrosion products and are safe to use. There is.
【０００４】アルミニウムまたはアルミニウム合金の洗
浄剤でリン酸を用いるものとして、ａ）特開昭４９−７
４６３２号、ｂ）特開昭５６−９６０８３号、ｃ）特開
昭５７−５１２６９号、ｄ）特開昭５８−６９８１号、
ｅ）特開昭５８−１８５７８１号、ｆ）特開昭６２−１
０３３８３号等が知られている。これら洗浄剤は粘度の
低い水溶性液体であることから、腐食生成物を除去する
ために必要十分な時間中、被洗浄物と接触させておくに
は浸漬しなければならない。ところが空調機およびその
室外機を取り外し、洗浄剤の液中に浸漬することは実質
的に困難なので清浄剤に接触させる方法の改善が望まれ
ている。[0004] As a cleaning agent for aluminum or aluminum alloy using phosphoric acid, a) JP-A-49-7
4632, b) JP-A-56-96083, c) JP-A-57-51269, d) JP-A-58-6981,
e) JP-A-58-185781, f) JP-A-62-1
No. 03383 and the like are known. Since these cleaning agents are water-soluble liquids with low viscosity, they must be immersed in order to remain in contact with the object for a sufficient period of time to remove corrosion products. However, since it is virtually difficult to remove the air conditioner and its outdoor unit and immerse them in a cleaning agent solution, an improvement in the method of bringing them into contact with the cleaning agent is desired.
【０００５】[0005]
【課題を解決するための手段】本発明者らは上記課題を
解決するために鋭意検討した結果、リン酸、シュウ酸お
よび１−ヒドロキシエチリデン−１，１−ジホスホン酸
の１種または、これらの２種もしくは３種の混合物を１
〜２０重量％、安息香酸１〜１０重量％、界面活性剤０
〜１０重量％および揮発性の水溶性有機溶媒と水との混
合溶液６０〜９８重量％からなる液状組成物がアルミフ
ィン上の腐食生成物および付着物と有利に接触し、これ
を除去するのに有効であることを見出し本発明を完成し
た。すなわち、本発明の清浄剤は上記組成物よりなるも
のである。
本発明によれば、上記組成物をアルミフィンに吹き付け
等の手段により付着せしめたとき、組成物中の水溶性有
機溶媒が揮散することにより安息香酸の結晶が析出して
アルミフィン表面に付着し、この析出した結晶の間隙お
よび表面にリン酸等の洗浄成分水溶液が担持され、腐食
生成物等と長時間接触させることが可能となり、その結
果腐食生成物等が除去可能となる。[Means for Solving the Problems] As a result of intensive studies to solve the above problems, the present inventors have found that one of phosphoric acid, oxalic acid and 1-hydroxyethylidene-1,1-diphosphonic acid, or one of these acids, 1 mixture of 2 or 3 types
~20% by weight, benzoic acid 1-10% by weight, 0 surfactants
~10% by weight and 60-98% by weight of a mixed solution of a volatile water-soluble organic solvent and water advantageously contacts and removes corrosion products and deposits on the aluminum fins. The present invention was completed based on the discovery that the present invention is effective. That is, the cleaning agent of the present invention consists of the above composition. According to the present invention, when the composition is applied to aluminum fins by means such as spraying, the water-soluble organic solvent in the composition evaporates and crystals of benzoic acid precipitate and adhere to the surface of the aluminum fins. An aqueous solution of a cleaning component such as phosphoric acid is supported in the gaps and surfaces of the precipitated crystals, making it possible to contact with corrosion products etc. for a long time, and as a result, corrosion products etc. can be removed.
【０００６】本発明において、有効成分であるリン酸、
シュウ酸および１−ヒドロキシエチリデン−１，１−ジ
ホスホン酸は単独または２種以上の混合で使用され、組
成物中の含有率は１〜２０重量％、好ましくは５〜１５
重量％である。これは１重量％未満ではアルミニウムの
腐食生成物の除去効果がほとんど得られず、２０重量％
より増量しても除去効果は変わらないためである。また
フィン近辺の構造部材に対する安全性を確保するために
も含有率は高すぎないほうが良い。[0006] In the present invention, the active ingredient phosphoric acid,
Oxalic acid and 1-hydroxyethylidene-1,1-diphosphonic acid are used alone or in a mixture of two or more, and the content in the composition is 1 to 20% by weight, preferably 5 to 15% by weight.
Weight%. If it is less than 1% by weight, almost no effect of removing corrosion products of aluminum can be obtained, and if it is less than 1% by weight,
This is because the removal effect does not change even if the amount is increased. Furthermore, in order to ensure the safety of structural members near the fins, the content should not be too high.
【０００７】安息香酸の添加量は１〜１０重量％であり
、１重量％未満ではアルミフィンへの付着量が少なく有
効成分の担持能力が出ず、１０重量％以上では水溶液に
溶解し均一にすることが困難なためである。溶剤として
用いられる揮発性の水溶性有機溶媒としては、メタノー
ル、エタノール、ｎ−プロパノール、ｉｓｏ−プロパノ
ール、アセトニトリルが挙げられる。これら水溶性有機
溶剤と水との混合割合は、有機溶剤濃度で２５〜９０容
量％、望ましくは３０〜７０容量％である。本発明清浄
剤において、より効果的な清浄組成物を得るために、界
面活性剤の添加が好ましい場合がある。この場合の界面
活性剤としては、たとえば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フェニルエーテ
ル、ポリオキシエチレン脂肪酸エステル、ソルビタン脂
肪酸エステル、ポリオキシエチレンソルビタン脂肪酸エ
ステル等の非イオン系界面活性剤が挙げられる。その添
加量は１０重量％以下が適当であり、１０重量％以上添
加しても有効な手段とはならない。[0007] The amount of benzoic acid added is 1 to 10% by weight. If it is less than 1% by weight, the amount of adhesion to the aluminum fins will be small and the ability to support the active ingredient will not be achieved. If it is more than 10% by weight, it will dissolve in the aqueous solution and will not be uniformly applied. This is because it is difficult to do so. Volatile water-soluble organic solvents used as solvents include methanol, ethanol, n-propanol, iso-propanol, and acetonitrile. The mixing ratio of these water-soluble organic solvents and water is 25 to 90% by volume, preferably 30 to 70% by volume in terms of organic solvent concentration. In the cleaning agent of the present invention, it may be preferable to add a surfactant to obtain a more effective cleaning composition. Examples of the surfactant in this case include nonionic surfactants such as polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyoxyethylene fatty acid ester, sorbitan fatty acid ester, and polyoxyethylene sorbitan fatty acid ester. . The appropriate amount of addition is 10% by weight or less, and adding more than 10% by weight is not an effective means.
【０００８】本発明の清浄剤は、スプレー塗布、刷毛塗
りのほか、耐圧容器に充填しジメチルエーテルまたは液
化石油ガス等の噴射剤を使用してエアゾールとし、噴射
塗布することもできる。清浄剤処理後、組成物が被処理
物上に長期間残留すると室外機部材をいためる原因とな
る場合がある。このため、酸による中和と水洗除去を行
わなければならないが、中和剤としては弱塩基性の炭酸
ナトリウム、炭酸水素ナトリウム、炭酸カリウム、炭酸
水素カリウム等の炭酸塩の水溶液が好ましく、そのｐＨ
はおおむね８〜１２のものが好ましい。炭酸塩は１種で
も、２種以上の混合物でもよいが、ｐＨ８以下では中和
の能力が低く、ｐＨ１２以上ではアルミニウムが侵され
る可能性があるため、さらに好ましくはｐＨ９〜１１が
よい。次いで弱塩基性中和剤に求められる他の要素は、
炭酸ガスを発生することで、中和とともに組成物を泡で
分散させて溶解除去し易くすることにある。次に本発明
の実施例を示すが本発明はこれらに限定されるものでは
ない。The cleaning agent of the present invention can be applied by spraying or brushing, or alternatively, it can be filled into a pressure-resistant container and made into an aerosol using a propellant such as dimethyl ether or liquefied petroleum gas, and then applied by injection. If the composition remains on the treated object for a long period of time after the cleaning agent treatment, it may cause damage to the outdoor unit components. For this reason, neutralization with acid and removal with water must be carried out, but the neutralizing agent is preferably an aqueous solution of weakly basic carbonates such as sodium carbonate, sodium hydrogen carbonate, potassium carbonate, potassium hydrogen carbonate, etc.
It is preferable that the number is approximately 8 to 12. One type of carbonate or a mixture of two or more types of carbonates may be used, but the neutralizing ability is low at a pH of 8 or lower, and aluminum may be attacked at a pH of 12 or higher, so a pH of 9 to 11 is more preferable. Next, other elements required for a weakly basic neutralizer are:
By generating carbon dioxide gas, the composition is neutralized and dispersed with bubbles to facilitate dissolution and removal. Next, examples of the present invention will be shown, but the present invention is not limited thereto.
【０００９】[0009]
【実施例】下記の各成分を混合溶解して清浄組成物を調
製し、得られた組成物２００ｇを噴霧器に入れ、これを
空調機の室外機に吹き付けて３０分放置する。その後、
この室外機に５重量％炭酸水素ナトリウム水溶液を吹き
付けて中和した後、水洗を行なう。結果を表−１に示す
。表中、 Ｎｏ．１〜１２は本発明の実施例、 Ｎｏ．
１３と１４は調製した比較例、 Ｎｏ．１５〜１７は市
販のアルミフィン清浄剤である。
Ａ：リン酸
Ｂ：シュウ酸
Ｃ：１−ヒドロキシエチリデン−１，１−ジホスホン酸
Ｄ：安息香酸
Ｅ：メタノール
Ｆ：エタノール
Ｇ：ｎ−プロパノール
Ｈ：ｉ−プロパノール
Ｉ：アセトニトリル
Ｊ：ポリオキシエチレンノニルフェニルエーテルＫ：ポ
リビニルアルコール
Ｌ：ＰＥＧ−１０００ （ポリエチレングリコール）
判 定
◎：腐食生成物および汚れとも完全に除去できた。
○：腐食生成物および汚れともほぼ除去できた。
△：汚れは除去できたが、腐食生成物が僅かに残った。
×：腐食生成物および汚れとも除去できなかった。[Example] A cleaning composition was prepared by mixing and dissolving the following components, and 200 g of the resulting composition was put into a sprayer, sprayed onto the outdoor unit of an air conditioner, and left for 30 minutes. after that,
This outdoor unit is neutralized by spraying a 5% by weight aqueous sodium bicarbonate solution, and then washed with water. The results are shown in Table-1. In the table, No. No. 1 to 12 are examples of the present invention.
No. 13 and 14 are comparative examples prepared. Nos. 15 to 17 are commercially available aluminum fin cleaners. A: Phosphoric acid B: Oxalic acid C: 1-hydroxyethylidene-1,1-diphosphonic acid D: Benzoic acid E: Methanol F: Ethanol G: n-Propanol H: i-Propanol I: Acetonitrile J: Polyoxyethylene nonyl Phenyl ether K: Polyvinyl alcohol L: PEG-1000 (polyethylene glycol)
Judgment ◎: Both corrosion products and dirt were completely removed. ○: Almost all corrosion products and dirt were removed. Δ: Dirt could be removed, but a small amount of corrosion products remained. ×: Neither corrosion products nor dirt could be removed.
【００１０】0010
【効果】上記表の結果からわかるように、本発明清浄剤
はいづれも良好な洗浄効果を示した。以上述べたように
本発明洗浄剤は液状組成物であるにもかかわらず、塗布
面に所要の時間保持され、アルミフィンの腐食生成物お
よび付着物と接触し、これら除去すべき物質に対して優
れた洗浄効果を示し、空調機用のアルミフィン清浄剤と
して有用である。[Effect] As can be seen from the results in the table above, all of the cleaning agents of the present invention exhibited good cleaning effects. As mentioned above, although the cleaning agent of the present invention is a liquid composition, it is retained on the coated surface for a required period of time, comes into contact with corrosion products and deposits on the aluminum fin, and is effective against the substances to be removed. It exhibits excellent cleaning effects and is useful as an aluminum fin cleaner for air conditioners.
Claims (6)
１０重量％および界面活性剤０〜１０重量％を揮発性の
水溶性有機溶剤と水との混合溶液６０〜９８重量％に溶
解したことを特徴とするアルミフィン清浄剤。[Claim 1] Phosphoric acid 1-20% by weight, benzoic acid 1-20% by weight
An aluminum fin cleaning agent characterized in that 10% by weight and 0 to 10% by weight of a surfactant are dissolved in 60 to 98% by weight of a mixed solution of a volatile water-soluble organic solvent and water.
〜１０重量％および界面活性剤０〜１０重量％を揮発性
の水溶性有機溶剤と水との混合溶液６０〜９８重量％に
溶解したことを特徴とするアルミフィン清浄剤。Claim 2: 1 to 20% by weight of oxalic acid, 1% by weight of benzoic acid
An aluminum fin cleaning agent characterized in that ~10% by weight and 0~10% by weight of a surfactant are dissolved in a mixed solution of 60~98% by weight of a volatile water-soluble organic solvent and water.
ジホスホン酸１〜２０重量％、安息香酸１〜１０重量％
および界面活性剤０〜１０重量％を揮発性の水溶性有機
溶剤と水との混合溶液６０〜９８重量％に溶解したこと
を特徴とするアルミフィン清浄剤。[Claim 3] 1-hydroxyethylidene-1,1-
Diphosphonic acid 1-20% by weight, benzoic acid 1-10% by weight
and an aluminum fin cleaning agent characterized in that 0 to 10% by weight of a surfactant is dissolved in a mixed solution of 60 to 98% by weight of a volatile water-soluble organic solvent and water.
シエチリデン−１，１−ジホスホン酸の２種または３種
の混合物１〜２０重量％、安息香酸１〜１０重量％およ
び界面活性剤０〜１０重量％を揮発性の水溶性有機溶剤
と水との混合溶液６０〜９８重量％に溶解したことを特
徴とするアルミフィン清浄剤。4. 1 to 20% by weight of a mixture of two or three of phosphoric acid, oxalic acid and 1-hydroxyethylidene-1,1-diphosphonic acid, 1 to 10% by weight of benzoic acid, and 0 to 10% by weight of a surfactant. An aluminum fin cleaning agent characterized by dissolving 60 to 98% by weight of a mixed solution of a volatile water-soluble organic solvent and water.
、エタノール、ｎ−プロパノール、ｉｓｏ−プロパノー
ルまたはアセトニトリルである請求項１〜４のいづれか
１項記載のアルミフィン清浄剤。5. The aluminum fin detergent according to claim 1, wherein the volatile water-soluble organic solvent is methanol, ethanol, n-propanol, iso-propanol or acetonitrile.
シエチリデン−１，１−ジホスホン酸の１種または、こ
れらの２種もしくは３種の混合物を１〜２０重量％、安
息香酸１〜１０重量％および界面活性剤０〜１０重量％
を揮発性の水溶性有機溶剤１と水との混合溶液６０〜９
８重量％に溶解してなる液状組成物を、空調機等のアル
ミフィンにスプレーガン等を用いて付着させた後、約１
５〜６０分放置し、ｐＨ８〜１２の弱塩基性の炭酸塩水
溶液で中和することにより、除去すべき物質および安息
香酸を発生する炭酸ガスで発泡分散し、溶解させ水洗し
やすくすることを特徴とするアルミフィンの腐食生成物
および付着物を除去する方法。6. 1 to 20% by weight of one of phosphoric acid, oxalic acid, and 1-hydroxyethylidene-1,1-diphosphonic acid, or a mixture of two or three thereof, and 1 to 10% by weight of benzoic acid. and surfactant 0-10% by weight
A mixed solution of volatile water-soluble organic solvent 1 and water 60 to 9
After applying a liquid composition dissolved at 8% by weight to aluminum fins of an air conditioner, etc. using a spray gun, approximately 1%
By leaving it for 5 to 60 minutes and neutralizing it with a weakly basic carbonate aqueous solution with a pH of 8 to 12, the substance to be removed and benzoic acid are foamed and dispersed with the generated carbon dioxide gas, dissolving them and making them easier to wash with water. A method for removing corrosion products and deposits from aluminum fins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9294991A JPH04304392A (en) | 1991-03-31 | 1991-03-31 | Cleaning agent for aluminum fin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9294991A JPH04304392A (en) | 1991-03-31 | 1991-03-31 | Cleaning agent for aluminum fin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04304392A true JPH04304392A (en) | 1992-10-27 |
Family
ID=14068718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9294991A Pending JPH04304392A (en) | 1991-03-31 | 1991-03-31 | Cleaning agent for aluminum fin |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04304392A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0789094A1 (en) * | 1994-10-21 | 1997-08-13 | Nippon Paint Co., Ltd. | Aqueous acid cleaning solution for aluminum metal and method for cleaning the metal |
| CN102877075A (en) * | 2012-09-20 | 2013-01-16 | 吴江市天源塑胶有限公司 | Metal surface oil and rust removal agent |
| CN104593792A (en) * | 2014-12-25 | 2015-05-06 | 宁波市川宁环保科技有限公司 | Efficient environment-friendly type aluminum fin cleaning agent and preparation method thereof |
-
1991
- 1991-03-31 JP JP9294991A patent/JPH04304392A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0789094A1 (en) * | 1994-10-21 | 1997-08-13 | Nippon Paint Co., Ltd. | Aqueous acid cleaning solution for aluminum metal and method for cleaning the metal |
| EP0789094A4 (en) * | 1994-10-21 | 1998-01-14 | Nippon Paint Co Ltd | Aqueous acid cleaning solution for aluminum metal and method for cleaning the metal |
| CN102877075A (en) * | 2012-09-20 | 2013-01-16 | 吴江市天源塑胶有限公司 | Metal surface oil and rust removal agent |
| CN104593792A (en) * | 2014-12-25 | 2015-05-06 | 宁波市川宁环保科技有限公司 | Efficient environment-friendly type aluminum fin cleaning agent and preparation method thereof |
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