DE871395C - Increasing the corrosion resistance of metals, especially light metals - Google Patents

Increasing the corrosion resistance of metals, especially light metals

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Publication number
DE871395C
DE871395C DEC981D DEC0000981D DE871395C DE 871395 C DE871395 C DE 871395C DE C981 D DEC981 D DE C981D DE C0000981 D DEC0000981 D DE C0000981D DE 871395 C DE871395 C DE 871395C
Authority
DE
Germany
Prior art keywords
metals
increasing
corrosion resistance
especially light
weight
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.)
Expired
Application number
DEC981D
Other languages
German (de)
Inventor
Kurt Dr Mueller
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.)
Joh A Benckiser GmbH
Original Assignee
Joh A Benckiser GmbH
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 Joh A Benckiser GmbH filed Critical Joh A Benckiser GmbH
Priority to DEC981D priority Critical patent/DE871395C/en
Application granted granted Critical
Publication of DE871395C publication Critical patent/DE871395C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23GCLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/24Cleaning or pickling metallic material with solutions or molten salts with neutral solutions
    • C23G1/26Cleaning or pickling metallic material with solutions or molten salts with neutral solutions using inhibitors
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23FNON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/10Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids using organic inhibitors
    • C23F11/12Oxygen-containing compounds
    • C23F11/124Carboxylic acids
    • C23F11/126Aliphatic acids
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23GCLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/04Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
    • C23G1/06Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23GCLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/14Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
    • C23G1/16Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions using inhibitors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Description

Erhöhung der Korrosionsbeständigkeit von Metallen, insbesondere Leichtmetallen Es ist bereits der Vorschlag gemacht «-orden, die bei der Gewinnung von Zucker anfallende Melasse als Korrosionsschutzmittel in sauren Bädern zu verwenden. Der besondere Vorteil dieses Produktes besteht nicht allein darin, daß es wegen seiner Ungiftigkeit für jeden beliebigen Anw#endungsziveck in Betracht kommt, sondern vor allem in dem billigen Preis der Melasse. Da ;dieselbe jedoch im alkalischen Medium nur schlechte Schutzwirkung gegenüber den Metallen ausübt, sio: war noch die Aufgabe zu lösen, :entsprechend preiswerte, ungiftige Mittel aufzufinden, die auch im alkalischen pH-Be. reich wirksam sind. Es wurde gefunden, :daß die Salze der Polyoxysäuren die Eigenschaften besitzen, die Aggressivität sowohl saurer wie alkalischer Lösungen gegen Metalle, insbesondere Leichtmetalle, weitestgehend herabzusetzen. Solche Polyoxysäuren sind z. B. die Saecharins,äuren, die Aldonsäuren, Cellobionsäure u. a. Man erhält .sie durch Einwirkung von Alkali-bzw. E.rdalkalihydroxyden und/oder Oxydationsmitteln auf Mono.saccharide. Soweit als Ausgangsmaterialien Disaccharide vorliegen, sind diesle zuvor in der üblichen Weise zu invertieren. Dabei kann man an Stelle von reinen Zuckerlösjungen :auch die bei der Zuckerindustrie ,anfallenden Abfallau,-n, wie Rühenzuckermelasse, oder den Ablaufzucker der Holzzuckerindustrie einsetzen.Increasing the corrosion resistance of metals, especially light metals The proposal has already been made, that which arises in the production of sugar Use molasses as an anti-corrosive agent in acidic baths. The special one The advantage of this product is not only that it is non-toxic comes into consideration for any application purpose, but above all in that cheap price of molasses. There; but it is only bad in an alkaline medium Has a protective effect on the metals, sio: the task was still to be solved, : to find inexpensive, non-toxic agents that are also in alkaline pH-Be. are richly effective. It has been found that: the salts of the polyoxyacids Have properties that make both acidic and alkaline solutions aggressive against metals, especially light metals, as much as possible. Such polyoxyacids are z. B. the Saecharins, Äuren, the Aldonsäuren, Cellobionäure and a. You get .sie by the action of alkali or. E. alkaline earth hydroxides and / or oxidizing agents on monosaccharides. If disaccharides are present as starting materials, are invert these beforehand in the usual way. Instead of pure sugar solution boys: also those in the sugar industry, incurred waste, how Use beet sugar molasses or the run-off sugar from the wood sugar industry.

Die Anwendung der erfmdungsgemäß;en Mittel kann in der üblichen Form und für die bekannten Zwecke -erfolgen, z. B. bei der Herstellung von Sparbeinen, Mitteln zum Lösen von Bierstein, Milchstein, Wasserstein usw. Ferner eignet sich' die neue Arbeitsweise auch zum Vorbehandeln der Metalle für die nachfolgende Aufbringung von Schutzanstrichen mittels Farben,oder Lack. Beispiele i. 5ooo Gewichtsteile Rübenzuckermelasse mit 237o Gewichtsteilen Saccharose werden mit Schwefelsäure bei ioo° invertiert, danach mit Zoo Gewichtsteilen Wasser verdünnt und abgekühlt. Die verdünnte, invertierte Melasse wird unter Rühren mit 9646 Gewichtsteilen Kalkmilch, enthaltend 1459 Gewichtsteile Calciumoxyd, versetzt und etwa 3 Stunden unter weiterem Rühren bei 7o bis 8o° gehalten. Zum Schluß wird die Mischung etwa 15 Minuten gekocht und hierauf der überschüssige Kalk mit Kohlensäure gefällt. Das gebildete Galci:umcarboxat wird heiß erbfiltriert - und das neutrale Filtrat mit Schwefelsäure entsprechend 795o ccm 2n H2 S 04 in der Hitze versetzt. Man filtriert von dem ausgefällten Calciumsulfat ;abund dampft nach Neutralisierung zur Trockne.The agents according to the invention can be used in the usual form and for the known purposes - successes, e.g. B. in the production of savings legs, Means for dissolving beer stone, milk stone, water stone, etc. Furthermore, ' the new way of working also for pretreating the metals for subsequent application of protective coatings using paints or varnish. Examples i. 5,000 parts by weight of beet sugar molasses with 237o parts by weight of sucrose are inverted with sulfuric acid at 100 °, then diluted with zoo parts by weight of water and cooled. The diluted, inverted Molasses is stirred with 9646 parts by weight of milk of lime containing 1459 parts by weight Calcium oxide, added and kept at 7o to 8o ° for about 3 hours with further stirring. Finally, the mixture is boiled for about 15 minutes and then the excess Carbonated lime precipitated. The Galci: umcarboxat formed is hot-filtered - and the neutral filtrate with sulfuric acid corresponding to 795o ccm 2n H2 S 04 in added to the heat. The precipitated calcium sulfate is filtered off and evaporated after neutralization to dryness.

Als Kesselstein-- und Wassersteinlösungsmittel wird verdünnte Salzsäure verwandt, der o, i Teile ihres Gewichts von denn, wie vorstehend bieschrieben, erhaltenen trockenen Gemisch zugefügt wurden. Die korrosionshemmende Wirkung gegenüber Eisen bleträgt #9811/o. 2.- 2ooo Gewichtsteile Ablaufzucker der - H<ilzzuckerindustrie mit 925 Gewichtsteilen Glucose werden mit Natronlauge mit einem Gehalt von 9,8 Gewichtsteilen NaOH unter Rühren neutralisiert. Für die Umwandlung in Saccharinsäure wird der neutralisierte Sirup unter Rühren weiter mit 3100 Gewichtsteilen Kalkmilch mit einem Gehalt von 432 Gewirhtsteilen Calciumoxyd versetzt und etwa 3 Stunden bei 7o bis 8o° gerührt. Dann wird die stark kalkalkalische Mischung etwa i 5 Minuten gekocht und anschließend mit Kohlensäure zwecks Fällung des überschüssigen Calciumhydroxyds gesättigt und, wie im Beispiel i beschrieben, weiter aufgearbeitet.The scale and scale solvent used is dilute hydrochloric acid, to which 0.1 parts of its weight of the dry mixture obtained as described above has been added. The corrosion-inhibiting effect on iron is # 9811 / o. 2.- 2,000 parts by weight of run-off sugar from the wood sugar industry with 925 parts by weight of glucose are neutralized with sodium hydroxide solution containing 9.8 parts by weight of NaOH while stirring. To convert it into saccharic acid, the neutralized syrup is further mixed with 3100 parts by weight of milk of lime with a content of 432 parts by weight of calcium oxide, while stirring, and the mixture is stirred at 70 to 80 ° for about 3 hours. The strongly alkaline mixture is then boiled for about 15 minutes and then saturated with carbonic acid to precipitate the excess calcium hydroxide and further worked up as described in Example 1.

ö, F % des erhaltenen Säurnegiemisches werden einer 8 %igen Natronlauge zugefügt, die als Beizlö:sung für Aluminiumgegenstände verwandt wird. Die Aggressivität gegenübler Aluminium wird durch den Zusatz um 95% herabgesetzt.O, F% of the acid mixture obtained is an 8% sodium hydroxide solution added, which is used as a pickling solution for aluminum objects. The aggressiveness Compared to aluminum is reduced by the addition by 95%.

3. Als Beinlösung für Aluminiumgegenstände dient eine 8 %ige Natronlauge mit einem. Zusutz von ö,o8 o/o des nach Beispiel 2 zu erhaltenden rohen. Calciumsalzes des Säuregemisches. Die Aggressivitätsveraninderung beträgt fast ioo%.3. An 8% sodium hydroxide solution is used as a leg solution for aluminum objects with a. Use of Ö, o8 o / o of the raw material to be obtained according to Example 2. Calcium salt of the acid mixture. The reduction in aggressiveness is almost 100%.

Claims (2)

PATENTANSPRÜCHE: i. Verwendung der f,olyoxys.äjuren, wie Sacchariils;äuren, Aldonsäuren, Gellobionsäure als Mittel zur Erhöhung der Korrosionsbeständigkeit von Metallen, insbesondere Leichtmetallen, in sauren, neutralen oder alkalischen wäßrigen Lösungen. PATENT CLAIMS: i. Use of fatty acids, such as saccharic acids, aldonic acids, gellobionic acid, as agents for increasing the corrosion resistance of metals, especially light metals, in acidic, neutral or alkaline aqueous solutions. 2. Verfahren gemäß Anspruch i, dadurch gekennzeichnet, daß 'die Verwendung zusammen mit anderen bekannten Korrosionsschutzmitteln erfolgt.2. The method according to claim i, characterized in that 'the Used together with other known anti-corrosion agents.
DEC981D 1944-06-27 1944-06-27 Increasing the corrosion resistance of metals, especially light metals Expired DE871395C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC981D DE871395C (en) 1944-06-27 1944-06-27 Increasing the corrosion resistance of metals, especially light metals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC981D DE871395C (en) 1944-06-27 1944-06-27 Increasing the corrosion resistance of metals, especially light metals

Publications (1)

Publication Number Publication Date
DE871395C true DE871395C (en) 1953-04-13

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DEC981D Expired DE871395C (en) 1944-06-27 1944-06-27 Increasing the corrosion resistance of metals, especially light metals

Country Status (1)

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DE (1) DE871395C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1130666B (en) * 1958-03-13 1962-05-30 Siemens Ag Process for removing rust from objects and systems made of iron and / or steel, in particular pipe systems and boiler systems
FR2548203A1 (en) * 1983-06-30 1985-01-04 Nl Industries Inc PROCESS FOR INHIBITING CORROSION BY AQUEOUS BRAUNDS AND DRILLING FLUID PREPARED ACCORDING TO SAID METHOD
DE3904733A1 (en) * 1988-02-18 1989-08-31 Kurita Water Ind Ltd CORROSION INHIBITOR

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1130666B (en) * 1958-03-13 1962-05-30 Siemens Ag Process for removing rust from objects and systems made of iron and / or steel, in particular pipe systems and boiler systems
FR2548203A1 (en) * 1983-06-30 1985-01-04 Nl Industries Inc PROCESS FOR INHIBITING CORROSION BY AQUEOUS BRAUNDS AND DRILLING FLUID PREPARED ACCORDING TO SAID METHOD
DE3904733A1 (en) * 1988-02-18 1989-08-31 Kurita Water Ind Ltd CORROSION INHIBITOR
DE3904733C2 (en) * 1988-02-18 2001-06-21 Kurita Water Ind Ltd Corrosion inhibitor

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