EP0372610A1 - Aqueous metal surface cleaner - Google Patents

Aqueous metal surface cleaner Download PDF

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Publication number
EP0372610A1
EP0372610A1 EP89202952A EP89202952A EP0372610A1 EP 0372610 A1 EP0372610 A1 EP 0372610A1 EP 89202952 A EP89202952 A EP 89202952A EP 89202952 A EP89202952 A EP 89202952A EP 0372610 A1 EP0372610 A1 EP 0372610A1
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EP
European Patent Office
Prior art keywords
cleaner
content
cleaner according
oligoazaalkane
aqueous cleaner
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.)
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Application number
EP89202952A
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German (de)
French (fr)
Inventor
Klaus Dr. Wittel
Siegfried Möller
Helmut Hoch
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GEA Group AG
Continentale Parker SA
Original Assignee
Metallgesellschaft AG
Continentale Parker SA
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Application filed by Metallgesellschaft AG, Continentale Parker SA filed Critical Metallgesellschaft AG
Publication of EP0372610A1 publication Critical patent/EP0372610A1/en
Withdrawn legal-status Critical Current

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    • 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
    • C23G1/24—Cleaning or pickling metallic material with solutions or molten salts with neutral solutions
    • 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
    • C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions

Definitions

  • the invention relates to an aqueous cleaner for metal surfaces with a pH greater than 7 and its use in the spraying process.
  • metal surfaces have to be degreased and cleaned at many points in the production process, e.g. after machining from fine measurement or intermediate storage or before phosphating to remove anti-corrosion oils or lubricants.
  • aqueous solutions since the widespread cleaning with organic solvents, e.g. Chlorinated hydrocarbons, because of the associated health and groundwater hazards is problematic.
  • organic solvents e.g. Chlorinated hydrocarbons
  • Such aqueous systems are e.g. the so-called neutral cleaners or alkaline cleaners.
  • the former are preferably used in spraying, the latter both in spraying and in diving.
  • Neutral cleaning agents have a pH value between about 8 and 9.5 at the usual application concentration. They contain surfactants, mostly non-ionic, and corrosion inhibitors, such as alkanolamine salts of short-chain fatty acids with less than 10 carbon atoms. The corrosion inhibitors serve to protect the treated parts against corrosion during the cleaning treatment, during drying and during subsequent storage (DE-C-26 14 234, EP-A-99 598).
  • Alkaline cleaners with a pH value usually greater than 8 contain surfactants, in particular anion-active and / or non-ionic types, and so-called framework substances, such as alkali carbonates, silicates, phosphates, borates, gluconates or sodium or potassium hydroxide.
  • the object of the invention is to provide an aqueous cleaner for metal surfaces which does not have the disadvantages of the known cleaners, in particular has a significantly increased tolerance to oily contaminants, and can therefore be used for a significantly longer time.
  • the object is achieved by formulating the cleaner of the type mentioned at the outset in accordance with the invention in such a way that it contains acyclic di- and / or oligoazaalkane with 2 to 12 nitrogen atoms in the molecule, each carbon atom being bound to a maximum of 1 nitrogen atom, and to a surfactant other than soap with a carbon number greater than 12.
  • Azaalkanes are compounds in which one or more C atom (s) of the alkane has been replaced by an N atom.
  • the aza name is determined by the original alkane. The number shown indicates which of the C atoms has been replaced.
  • cleaners with a maximum of 5 nitrogen atoms in the molecule are used.
  • Cleaners containing are particularly advantageous - 1,6-diaminohexane (1.8-diazaoctane) 1.4-diaminobutane (1.6-diazahexane) - 3- (2-aminoethyl) aminopropylamine (1,4,8-triazaoctane) - N, N'-bis (3-aminopropyl) ethylenediamine (1,5,8,12-tetrazadodecane) - diethylene triamine (1,4,7-triazaheptane) Triethylene tetramine (1,4,7,10-tetrazadecane).
  • the azaalkane content in the cleaner is 0.05 to 10 g / l.
  • a concentration in the lower range is particularly advantageous in the case of spray application, that in the higher range in the case of immersion application.
  • the ones according to the invention expediently contain the customary framework substances.
  • Preferred surfactants are those of an anionic or nonionic type.
  • the minimum cleaning time is the shortest cleaning time that is required to obtain fully wetted sheets (greater than 95% of the surface) during subsequent water rinsing.
  • a cleaner is used, the - 3.6 g / l Na2HPO4 and 0.4 g / l non-ionic surfactant (Antarox (R) BL 330 from GAF) contained and was used in spraying at 55 ° C. Corrosion protection oil was emulsified in different amounts in the cleaner to simulate the pollution that usually increases in practice.
  • the determined minimum cleaning times were at 0 1 2nd 3rd g / l anti-corrosion oil 30 s 50 s 90 s 120 s
  • the minimum cleaning time for spray application and at 60 ° C was at 0 1 2nd 3rd g / l anti-corrosion oil 30 s 30 s 50 s greater than 120 s
  • a so-called neutral cleaner of the composition is used - 5 g / l diethanolamine - 0.8 g / l 2-ethylhexanoic acid - 0.8 g / l alkyl polyethylene glycol polypropylene glycol ether (Propetal (R) 99 from Zschimmer & Schwarz).
  • the minimum cleaning time which was determined by spraying at 45 ° C, was at 0 1 2nd 3rd g / l anti-corrosion oil 65 s 90 s greater than 240 s greater than 240 s
  • a cleaner of the composition was used - 20 g / l Na2SiO3 - 18 g / l Na2CO3 - 10 g / l NaOH 1.5 g / l of dodecylbenzenesulfonate (lutensite (R) ALBN from BASF).

Abstract

The aqueous metal surface cleaner according to the invention has a pH above 7 and contains acyclic di- and/or oligoazaalkane with 2 to 12 nitrogen atoms, preferably a maximum of 5 nitrogen atoms, in the molecule and surfactant which differs from soap and has a number of carbon atoms greater than 12. Each C atom in the oligoazaalkane is bonded to a maximum of 1 nitrogen atom. The cleaner expediently contains 0.05 to 10 g/l di- and/or oligoazaalkane and, in addition, builder and/or anionic or nonionic surfactant. The cleaner is preferably used by the spray method.

Description

Die Erfindung betrifft einen wäßrigen Reiniger für Metalloberflächen mit einem pH-Wert größer als 7 sowie dessen Anwendung im Spritzverfahren.The invention relates to an aqueous cleaner for metal surfaces with a pH greater than 7 and its use in the spraying process.

In der metallverarbeitenden Industrie müssen an vielen Stellen im Produktionsablauf Metalloberflächen entfettet und gereinigt werden, so z.B. nach der spanenden Bearbeitung von dem Feinmessen oder der Zwischenlagerung oder vor der Phosphatierung zur Entfernung von Korrosionsschutzölen oder Schmierstoffen. Zu diesem Zweck ist es üblich und vorteilhaft, wäßrige Lösungen einzusetzen, da die ebenfalls verbreitete Reinigung mit organischen Lösungsmitteln, z.B. Chlorkohlenwasserstoffen, wegen der damit verbundenen Gesundheits- und Grundwassergefährdung problematisch ist. Derartige wäßrige Systeme sind z.B. die sogenannten Neutralreiniger oder aber alkalische Reiniger. Erstere werden vorzugsweise im Spritzen, letztere sowohl im Spritzen als im Tauchen eingesetzt.In the metalworking industry, metal surfaces have to be degreased and cleaned at many points in the production process, e.g. after machining from fine measurement or intermediate storage or before phosphating to remove anti-corrosion oils or lubricants. For this purpose it is common and advantageous to use aqueous solutions, since the widespread cleaning with organic solvents, e.g. Chlorinated hydrocarbons, because of the associated health and groundwater hazards is problematic. Such aqueous systems are e.g. the so-called neutral cleaners or alkaline cleaners. The former are preferably used in spraying, the latter both in spraying and in diving.

Neutralreiniger besitzen bei der üblichen Anwendungskonzentration einen pH-Wert zwischen etwa 8 und 9,5. Sie enthalten Tenside, meist nichtionogener Art, sowie Korrosionsinhibitoren, z.B. Alkanolaminsalze kurzkettiger Fettsäuren mit weniger als 10 C-Atomen. Die Korrosionsinhibitoren dienen dem Schutz der behandelten Teile vor Korrosion bei der Reinigungsbehandlung, beim Trocknen und bei der anschließenden Lagerung (DE-C-26 14 234, EP-A-99 598).Neutral cleaning agents have a pH value between about 8 and 9.5 at the usual application concentration. They contain surfactants, mostly non-ionic, and corrosion inhibitors, such as alkanolamine salts of short-chain fatty acids with less than 10 carbon atoms. The corrosion inhibitors serve to protect the treated parts against corrosion during the cleaning treatment, during drying and during subsequent storage (DE-C-26 14 234, EP-A-99 598).

Alkalische Reiniger mit einem pH-Wert üblicherweise größer als 8 enthalten Tenside, insbesondere anionenaktiver und/oder nichtionogener Art, und sogenannte Gerüstsubstanzen, wie Alkalicarbonate, Silikate, Phosphate, Borate, Gluconate oder Natrium- oder Kalium-Hydroxid.Alkaline cleaners with a pH value usually greater than 8 contain surfactants, in particular anion-active and / or non-ionic types, and so-called framework substances, such as alkali carbonates, silicates, phosphates, borates, gluconates or sodium or potassium hydroxide.

Der auf den zu reinigenden Teilen haftende Schmutz gelangt bei der Reinigung in den Reiniger. Da dieser aus Kosten- und Umweltschutzgründen üblicherweise längere Zeit im Einsatz ist, reichert sich in ihm der abgelöst Schmutz, meist ölige Verunreinigung, an. Mit zunehmender Schmutzaufnahme verlieren die Reiniger ihre Reinigungskraft. Als Abhilfe kann man die Konzentration an Reinigerchemikalien erhöhen, eine Maßnahme, die jedoch nur beschränkt Erfolg verspricht. In der Regel muß ein abgearbeiteter Reiniger geflutet oder ganz bzw. partiell neu angesetzt werden. Solche Maßnahmen erhöhen nicht nur die Chemikalienkosten, sondern belasten auch die betriebliche Abwasseranlage und die Vorfluter in erheblichem Maße.The dirt adhering to the parts to be cleaned gets into the cleaner during cleaning. Since this is usually used for a long time for reasons of cost and environmental protection, the detached dirt, mostly oily contamination, accumulates in it. With increasing dirt absorption, the cleaners lose their cleaning power. As a remedy, you can increase the concentration of cleaning chemicals, a measure that, however, only promises limited success. As a rule, a processed cleaner must be flooded or completely or partially prepared again. Such measures not only increase the chemical costs, but also put a considerable strain on the operational sewage system and the receiving water.

Aufgabe der Erfindung ist es, einen wäßrigen Reiniger für Metalloberflächen bereitzusellen, der die Nachteile der bekannten Reiniger nicht aufweist, insbesondere eine deutlich erhöhte Toleranz gegenüber öligen Verunreinigungen besitzt, und mithin deutlich länger eingesetzt werden kann.The object of the invention is to provide an aqueous cleaner for metal surfaces which does not have the disadvantages of the known cleaners, in particular has a significantly increased tolerance to oily contaminants, and can therefore be used for a significantly longer time.

Die Aufgabe wird gelöst, indem der Reiniger der eingangs genannten Art entsprechend der Erfindung in der Weise formuliert wird, daß er einen Gehalt an azyklischem Di- und/oder Oligoazaalkan mit 2 bis 12 Stickstoffatomen im Molekül, wobei jedes C-Atom an maximal 1 Stickstoffatom gebunden ist, sowie an von Seife verschiedenem Tensid mit einer Kohlenstoffzahl größer als 12 aufweist.The object is achieved by formulating the cleaner of the type mentioned at the outset in accordance with the invention in such a way that it contains acyclic di- and / or oligoazaalkane with 2 to 12 nitrogen atoms in the molecule, each carbon atom being bound to a maximum of 1 nitrogen atom, and to a surfactant other than soap with a carbon number greater than 12.

Azaalkane sind Verbindungen, bei denen ein oder mehrere C-Atom(e) des Alkans durch ein N-Atom ersetzt ist bzw. sind. Der Aza-Name bestimmt sich nach dem ursprünglichen Alkan. Die vorgestellte Ziffer gibt an, welches der C-Atome ersetzt worden ist.Azaalkanes are compounds in which one or more C atom (s) of the alkane has been replaced by an N atom. The aza name is determined by the original alkane. The number shown indicates which of the C atoms has been replaced.

Gemäß einer bevorzugten Ausgestaltung der Erfindung gelangen Reiniger mit maximal 5 Stickstoffatomen im Molekül zum Einsatz.According to a preferred embodiment of the invention, cleaners with a maximum of 5 nitrogen atoms in the molecule are used.

Besonders vorteilhaft sind Reiniger mit einem Gehalt an
- 1.6-Diaminohexan (1.8-Diazaoktan)
- 1.4-Diaminobutan (1.6-Diazahexan)
- 3-(2-Aminoethyl)-aminopropylamin (1,4,8-Triazaoktan)
- N,N′-Bis-(3-aminopropyl)-ethylendiamin (1,5,8,12-Tetrazadodekan)
- Diethylentriamin (1,4,7-Triazaheptan)
- Triethylentetramin (1,4,7,10-Tetrazadekan).Cleaners containing are particularly advantageous
- 1,6-diaminohexane (1.8-diazaoctane)
1.4-diaminobutane (1.6-diazahexane)
- 3- (2-aminoethyl) aminopropylamine (1,4,8-triazaoctane)
- N, N'-bis (3-aminopropyl) ethylenediamine (1,5,8,12-tetrazadodecane)
- diethylene triamine (1,4,7-triazaheptane)
Triethylene tetramine (1,4,7,10-tetrazadecane).

In vorteilhafter Weiterbildung der Erfindung beträgt der Gehalt an Azaalkan im Reiniger 0,05 bis 10 g/l. Eine Konzentration in niedrigerem Bereich ist insbesondere bei Spritzanwendung, eine solche im höheren Bereich bei Tauchanwendung von Vorteil.In an advantageous development of the invention, the azaalkane content in the cleaner is 0.05 to 10 g / l. A concentration in the lower range is particularly advantageous in the case of spray application, that in the higher range in the case of immersion application.

Wie andere Reiniger enthalten auch die entsprechend der Erfindung zweckmäßigerweise die üblichen Gerüstsubstanzen. Als Tenside sind die von anionischer oder nichtionogener Art bevorzugt.Like other cleaners, the ones according to the invention expediently contain the customary framework substances. Preferred surfactants are those of an anionic or nonionic type.

Der besondere Vorteil des erfindungsgemäßen Reinigers zeigt sich bei der Anwendung im Spritzen. Im Gegensatz zu der sonst üblichen höheren Einstellung der Tensidkonzentration führt der Zusatz der Di- und/oder Oligoazaalkane nämlich nicht zum verstärkten unerwünschten Schäumen.The particular advantage of the cleaner according to the invention is evident when used in spraying. In contrast to the usual higher setting of the surfactant concentration, the addition of the di- and / or oligoazaalkanes does not lead to increased undesired foaming.

Die Erfindung wird anhand der nachfolgenden Beispiele näher und beispielsweise erläutert.The invention is explained in more detail and, for example, using the examples below.

Zur Versuchsdurchführung dienten Stahlbleche der Qualität RSt 1405 mit den Abmessungen 105 x 85 x 0,7 mm, die durch
- Dampfentfettung mit 1.1.1-Trichlorethan
- Abwischen mit einem Baumwollappen
- Dampfentfettung mit 1.1.1-Trichlorethan
- 1 min Beizen in 1,0%iger Zitronensäure bei Raumtemperatur im Tauchen
- 1 min Wasserspülen
- 0,5 min Nachspülen in Isopropanol
- Trockenblasen mit Druckluft
- Beölen mit einem Korrosionsschutzöl (Rustilo(R) 845 der Fa. Castrol)
vorbereitet worden waren.Steel sheets of quality RSt 1405 with the dimensions 105 x 85 x 0.7 mm were used to carry out the test
- Steam degreasing with 1.1.1-trichloroethane
- Wipe with a cotton rag
- Steam degreasing with 1.1.1-trichloroethane
- 1 min pickling in 1.0% citric acid at room temperature while diving
- Rinse water for 1 min
- Rinse in isopropanol for 0.5 min
- Blow drying with compressed air
- Oil with an anti-corrosion oil (Rustilo (R) 845 from Castrol)
had been prepared.

Zur Ermittlung der Qualität des Reinigers wurde die sogenannte Mindestreinigungszeit (MRZ) bei steigenden Ölgehalten bestimmt. Die Mindestreinigungszeit ist die kürzeste Reinigungszeit, die erforderlich ist, um beim anschließenden Wasserspülen voll (größer als 95 % der Fläche) benetzte Bleche zu erhalten.To determine the quality of the cleaner, the so-called minimum cleaning time (MRZ) was determined with increasing oil contents. The minimum cleaning time is the shortest cleaning time that is required to obtain fully wetted sheets (greater than 95% of the surface) during subsequent water rinsing.

Beispiel 1example 1

Zur Anwendung gelangt ein Reiniger, der
- 3,6 g/l Na₂HPO₄ und
- 0,4 g/l nichtionogenes Tensid (Antarox(R) BL 330 der Fa. GAF)
enthielt und im Spritzen bei 55°C eingesetzt wurde. Zur Simulierung der in der Praxis üblicherweise ansteigenden Verschmutzung wurde Korrosionsschutzöl in unterschiedlichen Mengen in den Reiniger einemulgiert.A cleaner is used, the
- 3.6 g / l Na₂HPO₄ and
0.4 g / l non-ionic surfactant (Antarox (R) BL 330 from GAF)
contained and was used in spraying at 55 ° C. Corrosion protection oil was emulsified in different amounts in the cleaner to simulate the pollution that usually increases in practice.

Die ermittelten Mindestreinigungszeiten betrugen
bei 0 1 2 3 g/l Korrosionsschutzöl 30 s 50 s 90 s 120 s The determined minimum cleaning times were
at 0 1 2nd 3rd g / l anti-corrosion oil 30 s 50 s 90 s 120 s

Wurden dem vorgenannten Reiniger 0,4 g/l 1,4,8-Triazaoktan zugegeben, wurden folgende Mindestreinigungszeiten erhalten
bei 0 1 2 3 g/l Korrosionsschutzöl 20 s 25 s 45 s 60 s If 0.4 g / l of 1,4,8-triazaoctane was added to the above-mentioned cleaner, the following minimum cleaning times were obtained
at 0 1 2nd 3rd g / l anti-corrosion oil 20 s 25 s 45 s 60 s

Beispiel 2Example 2

Zur Anwendung gelangt ein Reiniger mit einem Gehalt von
- 5 g/l Na₂HPO₄
- 1 g/l Na₅P₃O₁₀
- 0,4 g/l Alkylpolyethylenglykolpolypropylenglykolether (Propetal(R) 99 der Fa. Zschimmer & Schwarz).A cleaner with a content of
- 5 g / l Na₂HPO₄
- 1 g / l Na₅P₃O₁₀
- 0.4 g / l alkyl polyethylene glycol polypropylene glycol ether (Propetal (R) 99 from Zschimmer & Schwarz).

Die Mindestreinigungszeit bei Spritzanwendung und bei 60°C betrug
bei 0 1 2 3 g/l Korrosionsschutzöl 30 s 30 s 50 s größer 120 s The minimum cleaning time for spray application and at 60 ° C was
at 0 1 2nd 3rd g / l anti-corrosion oil 30 s 30 s 50 s greater than 120 s

Wurde dem vorgenannten Reiniger, dessen Tensidgehalt auf 0,2 g/l reduziert worden war, 0,2 g/l 1.8-Diazaoktan zugegeben, ergaben sich folgende Mindestreinigungszeiten
bei 0 1 2 3 g/l Korrosionsschutzöl 20 s 25 s 40 s 45 s If 0.2 g / l 1.8-diaza octane was added to the above-mentioned cleaner, the surfactant content of which had been reduced to 0.2 g / l, the following minimum cleaning times resulted
at 0 1 2nd 3rd g / l anti-corrosion oil 20 s 25 s 40 s 45 s

Beispiel 3Example 3

Zur Anwendung gelangt ein sogenannter Neutralreiniger der Zusammensetzung
- 5 g/l Diethanolamin
- 0,8 g/l 2-Ethylhexansäure
- 0,8 g/l Alkylpolyethylenglykolpolypropylenglykolether (Propetal(R) 99 der Fa. Zschimmer & Schwarz).A so-called neutral cleaner of the composition is used
- 5 g / l diethanolamine
- 0.8 g / l 2-ethylhexanoic acid
- 0.8 g / l alkyl polyethylene glycol polypropylene glycol ether (Propetal (R) 99 from Zschimmer & Schwarz).

Die Mindestreinigungszeit, die im Spritzen bei 45°C bestimmt wurde, betrug
bei 0 1 2 3 g/l Korrosionsschutzöl 65 s 90 s größer 240 s größer 240 s The minimum cleaning time, which was determined by spraying at 45 ° C, was
at 0 1 2nd 3rd g / l anti-corrosion oil 65 s 90 s greater than 240 s greater than 240 s

Wurde der vorgenannte Neutralreiniger mit 1 g/l 1,5,8,12-Tetraazadodekan versetzt, ergaben sich die nachfolgenden Mindestreinigungszeiten
bei 0 1 2 3 g/l Korrosionsschutzöl 40 s 70 s 120 s 140 s If the aforementioned neutral cleaner was mixed with 1 g / l 1,5,8,12-tetraazadodecane, the following minimum cleaning times resulted
at 0 1 2nd 3rd g / l anti-corrosion oil 40 s 70 s 120 s 140 s

Beispiel 4Example 4

Zur Anwendung gelangte ein Reiniger der Zusammensetzung
- 20 g/l Na₂SiO₃
- 18 g/l Na₂CO₃
- 10 g/l NaOH
- 1,5 g/l Dodecylbenzolsulfonat (Lutensit(R) ALBN der Fa. BASF).A cleaner of the composition was used
- 20 g / l Na₂SiO₃
- 18 g / l Na₂CO₃
- 10 g / l NaOH
1.5 g / l of dodecylbenzenesulfonate (lutensite (R) ALBN from BASF).

Die Mindestreinigungszeiten wurden im Tauchen bei 90°C bestimmt und betrugen
bei 0 2 5 g/l Korrosionsschutzöl 2,5 min 5 min 20 min The minimum cleaning times were determined while diving at 90 ° C and were
at 0 2nd 5 g / l anti-corrosion oil 2.5 min 5 min 20 min

Nach einem Zusatz von 3 g/l 1,3,7,10-Tetraazadekan zum vorgenannten Reiniger wurden folgende Mindestreinigungszeiten erhalten
bei 0 2 5 g/l Korrosionsschutzöl 2,0 min 4 min 6 min After adding 3 g / l of 1,3,7,10-tetraazadecane to the above-mentioned cleaner, the following minimum cleaning times were obtained
at 0 2nd 5 g / l anti-corrosion oil 2.0 min 4 min 6 min

Sämtlichen Beispielen mit Spritzreinigung ist gemeinsam, daß Reiniger ohne Zusatz von Azaalkan zu starkem Schäumen neigten, während die Reiniger mit einem Gehalt an Azaalkan selbst bei einer Spritzdauer, die erheblich über der Mindestreinigungszeit lag, keine störende Schaumbildung zeigten.All examples with spray cleaning have in common that cleaners without the addition of azaalkane tended to foam strongly, while the cleaners containing azaalkane showed no disruptive foaming even with a spraying time which was considerably longer than the minimum cleaning time.

Claims (7)

1. Wäßriger Reiniger für Metalloberflächen mit einem pH-Wert größer als 7, gekennzeichnet durch einen Gehalt an azyklischem Di- und/oder Oligoazaalkan mit 2 bis 12 Stickstoffatomen im Molekül, wobei jedes C-Atom an maximal 1 Stickstoffatom gebunden ist, sowie an von Seife verschiedenem Tensid mit einer Zahl von Kohlenstoffatomen größer als 12.1. Aqueous cleaner for metal surfaces with a pH greater than 7, characterized by a content of acyclic di- and / or oligoazaalkane with 2 to 12 nitrogen atoms in the molecule, each carbon atom being bound to a maximum of 1 nitrogen atom, and to Soap of various surfactants with a number of carbon atoms greater than 12. 2. Wäßriger Reiniger nach Anspruch 1, gekennzeichnet durch einen Gehalt an Di- und/oder Oligoazaalkan mit maximal 5 Stickstoffatomen im Molekül.2. Aqueous cleaner according to claim 1, characterized by a content of di- and / or oligoazaalkane with a maximum of 5 nitrogen atoms in the molecule. 3. Wäßriger Reiniger nach Anspruch 1 oder 2, gekennzeichnet durch einen Gehalt an
- 1.6-Diaminohexan (1.8-Diazaoktan)
- 1.4-Diaminobutan (1.6-Diazahexan)
- 3-(2-Aminoethyl)-aminopropylamin (1,4,8-Triazaoktan)
- N,N′-Bis-(3-aminopropyl)-ethylendiamin (1,5,8,12-Tetrazadodekan)
- Diethylentriamin (1,4,7-Triazaheptan)
- Triethylentetramin (1,4,7,10-Tetrazadekan).3. Aqueous cleaner according to claim 1 or 2, characterized by a content of
- 1,6-diaminohexane (1.8-diazaoctane)
1.4-diaminobutane (1.6-diazahexane)
- 3- (2-aminoethyl) aminopropylamine (1,4,8-triazaoctane)
- N, N'-bis (3-aminopropyl) ethylenediamine (1,5,8,12-tetrazadodecane)
- diethylene triamine (1,4,7-triazaheptane)
Triethylene tetramine (1,4,7,10-tetrazadecane). 4. Wäßriger Reiniger nach Anspruch 1, 2 oder 3, gekennzeichnet durch einen Gehalt von 0,05 bis 10 g/l Di- und/oder Oligoazaalkan.4. Aqueous cleaner according to claim 1, 2 or 3, characterized by a content of 0.05 to 10 g / l di- and / or oligoazaalkane. 5. Wäßriger Reiniger nach einem oder mehreren der Ansprüche 1 bis 4, gekennzeichnet durch einen zusätzlichen Gehalt an Gerüstsubstanz.5. Aqueous cleaner according to one or more of claims 1 to 4, characterized by an additional content of framework. 6. Wäßriger Reiniger nach einem oder mehreren der Ansprüche 1 bis 5, gekennzeichnet durch einen Gehalt an anionenaktivem und/oder nichtionogenem Tensid.6. Aqueous cleaner according to one or more of claims 1 to 5, characterized by a content of anionic and / or nonionic surfactant. 7. Anwendung des wäßrigen Reinigers nach einem oder mehreren der Ansprüche 1 bis 6 im Spritzverfahren.7. Use of the aqueous cleaner according to one or more of claims 1 to 6 in the spray process.
EP89202952A 1988-12-07 1989-11-21 Aqueous metal surface cleaner Withdrawn EP0372610A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3841134 1988-12-07
DE19883841134 DE3841134A1 (en) 1988-12-07 1988-12-07 AQUEOUS CLEANER FOR METAL SURFACES

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Publication Number Publication Date
EP0372610A1 true EP0372610A1 (en) 1990-06-13

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ID=6368593

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Application Number Title Priority Date Filing Date
EP89202952A Withdrawn EP0372610A1 (en) 1988-12-07 1989-11-21 Aqueous metal surface cleaner

Country Status (5)

Country Link
EP (1) EP0372610A1 (en)
JP (1) JPH02213486A (en)
BR (1) BR8906274A (en)
CA (1) CA2004762A1 (en)
DE (1) DE3841134A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000063333A1 (en) * 1999-04-19 2000-10-26 The Procter & Gamble Company Detergent composition comprising anti-hazing agent
WO2000063334A1 (en) * 1999-04-19 2000-10-26 The Procter & Gamble Company Dishwashing detergent compositions containing organic polyamines
US6653274B1 (en) 1999-09-27 2003-11-25 The Proctor & Gamble Company Detergent composition comprising a soil entrainment system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6710023B1 (en) 1999-04-19 2004-03-23 Procter & Gamble Company Dishwashing detergent compositions containing organic polyamines

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3003970A (en) * 1960-05-23 1961-10-10 Dow Chemical Co Cleaning composition and a method of its use
US3048547A (en) * 1958-06-23 1962-08-07 Purex Corp Ltd Composition and process for cleaning aluminum surfaces
GB1172134A (en) * 1966-04-16 1969-11-26 Henkel & Cie Gmbh Process for Cleaning Metals
GB1193780A (en) * 1968-01-27 1970-06-03 Henkel & Cie Gmbh Improvements in Skin Cleaning Agents
DE1621575A1 (en) * 1966-04-04 1971-05-27 Fibremakers Ltd Process for removing deposits containing copper from processing equipment
US4556509A (en) * 1984-10-09 1985-12-03 Colgate-Palmolive Company Light duty detergents containing an organic diamine diacid salt
EP0323092A2 (en) * 1987-12-18 1989-07-05 Exxon Research And Engineering Company Process for the hydroisomerization of Fischer-Tropsch wax to produce lubricating oil

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3048547A (en) * 1958-06-23 1962-08-07 Purex Corp Ltd Composition and process for cleaning aluminum surfaces
US3003970A (en) * 1960-05-23 1961-10-10 Dow Chemical Co Cleaning composition and a method of its use
DE1621575A1 (en) * 1966-04-04 1971-05-27 Fibremakers Ltd Process for removing deposits containing copper from processing equipment
GB1172134A (en) * 1966-04-16 1969-11-26 Henkel & Cie Gmbh Process for Cleaning Metals
GB1193780A (en) * 1968-01-27 1970-06-03 Henkel & Cie Gmbh Improvements in Skin Cleaning Agents
US4556509A (en) * 1984-10-09 1985-12-03 Colgate-Palmolive Company Light duty detergents containing an organic diamine diacid salt
EP0323092A2 (en) * 1987-12-18 1989-07-05 Exxon Research And Engineering Company Process for the hydroisomerization of Fischer-Tropsch wax to produce lubricating oil

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000063333A1 (en) * 1999-04-19 2000-10-26 The Procter & Gamble Company Detergent composition comprising anti-hazing agent
WO2000063334A1 (en) * 1999-04-19 2000-10-26 The Procter & Gamble Company Dishwashing detergent compositions containing organic polyamines
US6653274B1 (en) 1999-09-27 2003-11-25 The Proctor & Gamble Company Detergent composition comprising a soil entrainment system

Also Published As

Publication number Publication date
BR8906274A (en) 1990-08-21
DE3841134A1 (en) 1990-06-13
CA2004762A1 (en) 1990-06-07
JPH02213486A (en) 1990-08-24

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