EP0066117A1 - Nettoyage de surfaces en aluminium anodisé et ses alliages - Google Patents

Nettoyage de surfaces en aluminium anodisé et ses alliages Download PDF

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Publication number
EP0066117A1
EP0066117A1 EP82104011A EP82104011A EP0066117A1 EP 0066117 A1 EP0066117 A1 EP 0066117A1 EP 82104011 A EP82104011 A EP 82104011A EP 82104011 A EP82104011 A EP 82104011A EP 0066117 A1 EP0066117 A1 EP 0066117A1
Authority
EP
European Patent Office
Prior art keywords
weight
percent
cleaning
acid
acid solution
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.)
Granted
Application number
EP82104011A
Other languages
German (de)
English (en)
Other versions
EP0066117B1 (fr
Inventor
Rainer Dr. Osberghaus
Hans Dr. Ellwanger
Horst Dr. Marsen
Harald Bossek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henkel AG and Co KGaA
Original Assignee
Henkel AG and Co KGaA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Priority to AT82104011T priority Critical patent/ATE8512T1/de
Publication of EP0066117A1 publication Critical patent/EP0066117A1/fr
Application granted granted Critical
Publication of EP0066117B1 publication Critical patent/EP0066117B1/fr
Expired legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/02—Inorganic compounds
    • C11D7/04—Water-soluble compounds
    • C11D7/08—Acids
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D11/00—Electrolytic coating by surface reaction, i.e. forming conversion layers
    • C25D11/02—Anodisation
    • C25D11/04—Anodisation of aluminium or alloys based thereon
    • C25D11/18—After-treatment, e.g. pore-sealing

Definitions

  • the invention relates to an improved method for cleaning surfaces made of anodized aluminum and its alloys.
  • Anodization forms thin layers of aluminum oxide on the surface, which are then compacted in the manufacturing process, usually by treatment with boiling water, so that the pores are closed.
  • the aluminum surfaces treated in this way are very hard and largely protected against the weather.
  • anodically oxidized aluminum surfaces are often used in practice due to their high protective effect and attractive appearance, especially when used outdoors.
  • Large-area aluminum parts with an anodized surface are often used as facade cladding, for example.
  • Neutral cleaning agents are recommended for cleaning anodically oxidized aluminum surfaces and their alloys, as alkaline cleaning agents easily attack the metal surface of the aluminum.
  • abrasive-free neutral cleaners are often not sufficient, particularly in the construction industry, for cleaning heavily soiled metal facades made of aluminum or similar material. If neutral cleaners containing an abrasive component are used, the desired effect can be achieved, but these processes are quite time-consuming and costly.
  • Short-chain phosphoric acid esters have also been proposed as an acidic, low-attack cleaning component. Without mechanical support, however, such agents only remove lightly adhering soiling.
  • acidic cleaners for anodized aluminum surfaces are known from DE-AS 27 21 573. These agents consist of an acidic treatment solution in the pH range of 0.8 to 3 and contain complex fluorine compounds of boron, aluminum, silicon, titanium or zirconium, individually or as a mixture. A good cleaning effect is achieved, whereby after an exposure time of
  • a 65 percent solution is expediently used as the nitric acid.
  • the phosphoric acid partial esters used are mixtures of mono- and diphosphoric acid esters. Products of this type can be produced by reacting phosphoric acid with aliphatic alcohols having 1 to 3 carbon atoms.
  • 1-hydroxyalkane-1,1-diphosphonic acids in particular, in particular in the form of 1-hydroxyethane-1,1-diphosphonic acid, and 1-aminoalkane-1,1-diphasphonic acid n or phosphonic acids containing carboxyl groups, such as 2- Phosphono-1,2,4-butane tricarboxylic acid or in particular nitrilotrimethylene phosphonic acid into consideration.
  • Suitable surfactants are alkyl sulfonic acids with a chain length of C 8 to C 18 and / or alkylbenzenesulfonic acid with 8 to 15 C atoms in the alkyl radical and / or nonionic surfactants, such as adducts of 8 to 15 moles of ethylene oxide with alkylphenols, the alkyl radical of which has 8 to 12 C atoms contains as well as fatty alcohols with 8 to 18 carbon atoms.
  • Suitable solubilizers and / or solvents are aliphatic alcohols, such as ethyl, propyl, isopropyl or n-butyl alcohols.
  • the cleaning solutions described above are applied to the anodized surface in a thin film at ambient temperature. This can be done, for example, by spraying, but expediently by brushing, rolling or by hand wiping. After the solution has had sufficient time to act, it is then rinsed off with water.
  • a major advantage of the procedure described above is that the solution can remain on the surface for a relatively long time without any noticeable attack on the aluminum oxide layer.
  • a uniform and very dirty looking anodized façade was divided into three test fields, each measuring 50 x 50 cm.
  • the middle test area was cleaned as well as possible with the abrasive cleaner.
  • Two acidic cleaners were tested against this standard. The cleaners were applied undiluted to the test field evenly without pressure using a washer saturated with the test solution, so that a homogeneous, thin cleaning film remained. After an exposure time of 2 minutes, it was washed with plenty of water using a lambskin wiper and the remaining moisture was scraped off.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Detergent Compositions (AREA)
  • Lubricants (AREA)
EP82104011A 1981-05-16 1982-05-08 Nettoyage de surfaces en aluminium anodisé et ses alliages Expired EP0066117B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82104011T ATE8512T1 (de) 1981-05-16 1982-05-08 Reinigung von oberflaechen aus anodisch oxidiertem aluminium und dessen legierungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813119538 DE3119538A1 (de) 1981-05-16 1981-05-16 Reinigung von oberflaechen aus anodisch oxidiertem aluminium und dessen legierungen
DE3119538 1981-05-16

Publications (2)

Publication Number Publication Date
EP0066117A1 true EP0066117A1 (fr) 1982-12-08
EP0066117B1 EP0066117B1 (fr) 1984-07-18

Family

ID=6132490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82104011A Expired EP0066117B1 (fr) 1981-05-16 1982-05-08 Nettoyage de surfaces en aluminium anodisé et ses alliages

Country Status (5)

Country Link
US (1) US4404039A (fr)
EP (1) EP0066117B1 (fr)
AT (1) ATE8512T1 (fr)
CA (1) CA1177372A (fr)
DE (2) DE3119538A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4789406A (en) * 1986-08-20 1988-12-06 Betz Laboratories, Inc. Method and compositions for penetrating and removing accumulated corrosion products and deposits from metal surfaces
CA2248568A1 (fr) * 1997-01-09 1998-07-16 Scott J. Beleck Compositions de desoxydation/decapage a l'acide et procede correspondant pouvant etre applique a des surfaces verticales en aluminium
FR2827610B1 (fr) * 2001-07-17 2005-09-02 Commissariat Energie Atomique Composition de degraissage utilisable pour le degraissage et/ou la decontamination de surfaces solides
DE102013226533A1 (de) * 2013-12-18 2015-06-18 MAHLE Behr GmbH & Co. KG Reiniger für ein Aluminiumbauteil und ein Verfahren zur Reinigung von Aluminiumbauteilen
DE102017109739A1 (de) * 2017-05-05 2018-11-08 Fischer Oberflächentechnik GmbH Wässrige Lösung und Verfahren zur Entfernung von Säure-Rückständen von Metalloberflächen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3004879A (en) * 1958-11-03 1961-10-17 Dow Chemical Co Brightening and cleaning composition and treatment for magnesium and magnesium-base alloys
DE2436278A1 (de) * 1974-07-27 1976-02-12 Robert Malcolm Farley Anwendung eines reinigungsmittels und reinigungsmittel zur reinigung, pflege und ausbildung einer schutzschicht gegen korrosion, verfaerbung und verschmutzung von nach dem eloxal-verfahren oberflaechenveredelten leichtmetallen, insbesondere aluminium
DE2721573B1 (de) * 1977-05-13 1978-08-10 Metallgesellschaft Ag Verfahren zum Reinigen von anodischen Oxidschichten auf Aluminium oder dessen Legierungen im Bauwesen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1243424A (en) * 1969-02-17 1971-08-18 Pyrene Co Ltd Cleaning and brightening of aluminium surfaces
US3663327A (en) * 1969-08-13 1972-05-16 Chemed Corp Formulation and method for brightening aluminum
US3738937A (en) * 1970-05-08 1973-06-12 Textilana Corp Polyalkylene polyamino polykis methylene phosphonic acids and salts thereof and methods for producing same
US3932243A (en) * 1973-07-20 1976-01-13 Fremont Industries, Inc. Cleaning and polishing compound for barrel and vibratory finishing of ferrous and non-ferrous metals
AT337301B (de) 1975-05-20 1977-06-27 Oswald Ing Hans Elektrische maschine mit uber mechanische schalter impulsgespeisten spulen der standerwicklung
US4169068A (en) * 1976-08-20 1979-09-25 Japan Synthetic Rubber Company Limited Stripping liquor composition for removing photoresists comprising hydrogen peroxide

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3004879A (en) * 1958-11-03 1961-10-17 Dow Chemical Co Brightening and cleaning composition and treatment for magnesium and magnesium-base alloys
DE2436278A1 (de) * 1974-07-27 1976-02-12 Robert Malcolm Farley Anwendung eines reinigungsmittels und reinigungsmittel zur reinigung, pflege und ausbildung einer schutzschicht gegen korrosion, verfaerbung und verschmutzung von nach dem eloxal-verfahren oberflaechenveredelten leichtmetallen, insbesondere aluminium
DE2721573B1 (de) * 1977-05-13 1978-08-10 Metallgesellschaft Ag Verfahren zum Reinigen von anodischen Oxidschichten auf Aluminium oder dessen Legierungen im Bauwesen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, Band 88, Nr. 24, 12. Juni 1978, Seite 310, Nr. 175223u, Columbus Ohio (USA); *

Also Published As

Publication number Publication date
US4404039A (en) 1983-09-13
ATE8512T1 (de) 1984-08-15
DE3260401D1 (en) 1984-08-23
DE3119538A1 (de) 1982-12-02
CA1177372A (fr) 1984-11-06
EP0066117B1 (fr) 1984-07-18

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