DE748650C - Process for reducing the corrosive influence of water and aqueous solutions on iron - Google Patents

Process for reducing the corrosive influence of water and aqueous solutions on iron

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Publication number
DE748650C
DE748650C DED81401D DED0081401D DE748650C DE 748650 C DE748650 C DE 748650C DE D81401 D DED81401 D DE D81401D DE D0081401 D DED0081401 D DE D0081401D DE 748650 C DE748650 C DE 748650C
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iron
water
aqueous solutions
acid
acids
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DED81401D
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German (de)
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Dr Franz Giloy
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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
    • C23F—NON-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
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • C23F11/08—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in other liquids
    • C23F11/10—Inhibiting 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
    • C—CHEMISTRY; METALLURGY
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    • C10M173/00—Lubricating compositions containing more than 10% water
    • C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
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    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/02—Water
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    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • C10M2201/082—Inorganic acids or salts thereof containing nitrogen
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    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/08—Inorganic acids or salts thereof
    • C10M2201/084—Inorganic acids or salts thereof containing sulfur, selenium or tellurium
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    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/086—Chromium oxides, acids or salts
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/02—Hydroxy compounds
    • C10M2207/021—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/022—Hydroxy compounds having hydroxy groups bound to acyclic or cycloaliphatic carbon atoms containing at least two hydroxy groups
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    • C10M2207/08—Aldehydes; Ketones
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
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    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
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    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/04—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2215/044—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to acyclic or cycloaliphatic carbon atoms having cycloaliphatic groups
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    • C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
    • C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
    • C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
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    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
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    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/08—Thiols; Sulfides; Polysulfides; Mercaptals
    • C10M2219/082—Thiols; Sulfides; Polysulfides; Mercaptals containing sulfur atoms bound to acyclic or cycloaliphatic carbon atoms
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    • C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
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    • C10N2050/00—Form in which the lubricant is applied to the material being lubricated
    • C10N2050/01—Emulsions, colloids, or micelles

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

Description

Verfahren zur Verminderung des korrodierenden Einflusses von Wasser und wäßrigen Lösungen auf Eisen Es wurde gefunden, daß die Korrosion von Eisen und Gegenständen- aus Eisen in Ge.genwart von Wasser oder wäßrigen Lösungen mit einem pII Wert, .der nicht unter 6,5 liegt, aufgehoben bzw. ganz erheblich zurückgedrängt wird, wenn man den genannten Flüssigkeiten die wasserlöslichen Salze von Ätliercarbonsäuren der allgemeinen Formel-(R. 0.)s # R' # C O O H zusetzt. In der allgemeinen Formel stellt R einen beliebigen organischen Rest mit wenigstens vier Kohlenstoffatomen dar, der durch Heteroatome oder Heteroatomgruppen unterbrochen und auch cyclisch -angeordnet sein kann, während R' ein Alkylenrest ist, der noch substituiert sei-.i kann und x die Zahlen r und 2 bedeutet.Process for reducing the corrosive influence of water and aqueous solutions on iron It has been found that the corrosion of iron and Objects made of iron in the presence of water or aqueous solutions with a pII value, which is not below 6.5, canceled or pushed back quite considerably becomes, if one of the liquids mentioned, the water-soluble salts of Ätliercarbonsäuren of the general formula- (R. 0.) s # R '# C O O H added. In the general formula R represents any organic radical with at least four carbon atoms represents, which is interrupted by heteroatoms or heteroatom groups and also cyclic -can be arranged, while R 'is an alkylene radical which is still substituted-.i can and x means the numbers r and 2.

Derartige Äthercarbonsäuren sind z. I3. l,'utylo,xyessigsäure, i-Amyloxyessigsäure, Gemische von Alkoxyessigsäuren, die aus Gemischen - von Alkoholen erhalten werden, welche der Reduktion von Vorlaufsäuren der Paraffinoxydation entstammen oder als hochsiedende Anteile bei der Methanolsynthese anfallen, Octyloxyessigsäure, Dodecyloxyessigsäure, Alkoxyfettsäuren, erhältlich aus sekundären Alkoholen, die ihrerseits aus Vorlauffettsäuren mit 7 bis 9 Kohlenstoff atomen durch Ketonisierung und nachfolgender Hydrierung gewonnen sind, durch Umsetzung mit Halogenfettsäuren, Cyclohexyloxyessigsäure, Tetrali@-drofu@rfurvloxvessigsäure, Phenoxyessigsäure, Kresoxvessigsäure, iin Kern all;ylierte oder cvcloalkvlierte Arvloxyfettsäuren, Naphthenvloxyessigsäuren, Abietvloxvessigsäuren, Penzyloxvessigsäure, Tetrahydrometanaphthyloxyessigsäure, Dioctyloxyessigsätire, y-Heptvloxypropionsäure, P-Octy#loxypropionsäure, ; -Octvloxyisobuttersätire, a-Octyloxycaprinsäure, Äthersäuren, erhältlich aus Alkoholaten der primären Alkohole C7-C9 und _a-H.alogenfettsäuren C7 C9. a-Butoxylaurinsäure, 6-Oxy= oder Methoxy-n-hexyloxyessigsäure u. dgl. Unter diesen Äthercarbonsäuren haben die Alkoxy- und C_t>cloalkotyfettsäuren den Vorrang. .Such ether carboxylic acids are z. I3. l, 'utylo, xyacetic acid, i-amyloxyacetic acid, Mixtures of alkoxyacetic acids obtained from mixtures - of alcohols, which originate from the reduction of precursor acids of paraffin oxidation or as high-boiling fractions occur in the methanol synthesis, octyloxyacetic acid, dodecyloxyacetic acid, Alkoxy fatty acids, obtainable from secondary alcohols, which in turn are obtained from first run fatty acids with 7 to 9 carbon atoms by ketonization and subsequent hydrogenation obtained by reaction with halogen fatty acids, cyclohexyloxyacetic acid, tetrali @ -drofu @ rfurvloxvessigsäure, Phenoxyacetic acid, cresoxyacetic acid, in the nucleus all; ylated or cycloalcated Arvloxy fatty acids, naphthenvloxy acetic acids, abietvloxy acetic acids, penzyloxy acetic acid, Tetrahydrometanaphthyloxyacetic acid, dioctyloxyacetic acid, y-heptvloxypropionic acid, P-Octy # loxypropionic acid,; -Octvloxyisobuttersätire, a-Octyloxycaprinsäure, ether acids, available from alcoholates of the primary alcohols C7-C9 and _a-H.alogen fatty acids C7 C9. a-butoxylauric acid, 6-oxy = or methoxy-n-hexyloxyacetic acid and the like The alkoxy and C_t> cloalkotyfatty acids have priority over these ether carboxylic acids. .

Die Salze dieser Säuren, welche mit Alkalien, Erdalkalien. Erden. Ammoniak oder organischen Basen gebildet sein können, vermögen in wäßrigen Lösungen bereits in Konzentrationen unter 10/, die Korrosion von Gegenständen aus Eisen oder Stahl, wie Rasierklingen, medizinischen Instrumenten o. dgl., vollständig zu verhüten. Diese Schutzwirkung tritt nicht nur gegenüber Wasser auf, sondern auch bei wäßrigen Lösungen, deren pH-Wert bei 6.11 oder darüber liegt, wie z. B. Mischungen von Wasser mit Aceton, Methanol. Äthanol, Butanol, Glycerin u. dgl. sowie wäßrigen Metallsalzlösungen, wie Lösungen von Ammoniumchlorid, Calciumchlorid oder essigsaurer Tonerde.The salts of these acids, which with alkalis, alkaline earths. Earth. Ammonia or organic bases can be formed, are able to do so in aqueous solutions already in concentrations below 10 /, the corrosion of objects made of iron or To prevent steel, such as razor blades, medical instruments or the like, completely. This protective effect occurs not only against water, but also with aqueous ones Solutions with a pH of 6.11 or above, such as B. Mixtures of water with acetone, methanol. Ethanol, butanol, glycerine and the like as well as aqueous metal salt solutions, such as solutions of ammonium chloride, calcium chloride or acetic clay.

Die beschriebenen Korrosionsschutzmittel können auch in Verbindung mit anderen bekannten, in gleicher Weise wirksamen Mitteln, wie Chromaten, Nitriten oder Aziden, angewandt werden.The anti-corrosion agents described can also be used in conjunction with other known, equally effective agents, such as chromates, nitrites or azides.

Es ist bekannt, wäßrigen Lösungen, die Eisen nicht angreifen sollen, organische Aminocarbonsäuren oder deren wasserlösliche Salze, wie z. B. Anthranilsäure, zuzusetzen. Diese Stoffe weisen jedoch den Nachteil auf, daß sie in wäßrigen Lösungen bei Gegenwart von Eisen eine dunkelrote Färbung hervorrufen, die deshalb unerwünscht ist, weil sie nicht erkennen läßt, ob solche Lösungen, wie sie beispielsweise beim Reinigen von medizinischen Instrumenten gebraucht werden, irgendwelche Gegenstände enthalten und ob die in den Flüssigkeiten aufbewahrten Gegenstände noch unversehrt sind. Demgegenüber liefern die erfindungsgemäß vorgeschlagenen 'Salze von Äthercarbonsäuren in Wasser vollkommen farblose Lösungen. Beispiel r 67 Gewichtsteile Spindelöl wurden mit 33 Gewichtsteilen einer Alkoxyessigsäure, die im Alkylrest 7 bis 9 Kohlenstoffatome enthält, vermischt und unter gutem Rühren der -Mischung d. Gewichtsteile Ammoniak (2;°j°ig) zugefügt. Eine dabei anfänglich auftretende "Trübung verschwindet bei längerem Rühren wieder. Rührt man 2011, der erhaltenen Mischung in Wasser ein, so wird eine vor Rost schützende Emulsion gebildet, die als Schmier- oder Bohröl verwendet werden kann. Beispiel e Vermischt man das N-Diäthv@cvc@ohe@vlaminsalz der Alkoxyessigsäure, deren _-Ik1-trest 7 bis 9 Kohlenstoffatome aufweist. mit der 20- bis 25fachen Menge Motorenöl. so erhält man ein gut wirksames Kori-osi@)ii:-schutzöl.It is known that aqueous solutions that are not supposed to attack iron organic aminocarboxylic acids or their water-soluble salts, such as. B. Anthranilic acid, to add. However, these substances have the disadvantage that they are in aqueous solutions cause a dark red color in the presence of iron, which is therefore undesirable is because it does not reveal whether solutions such as those used in, for example Cleaning of medical instruments used, any items and whether the items stored in the liquids are still intact are. In contrast, the proposed according to the invention 'provide salts of ether carboxylic acids completely colorless solutions in water. Example r 67 parts by weight of spindle oil were with 33 parts by weight of an alkoxyacetic acid containing 7 to 9 carbon atoms in the alkyl radical contains, mixed and, with thorough stirring, the mixture d. Parts by weight of ammonia (2; ° j ° ig) added. Any "turbidity initially occurring" disappears at prolonged stirring again. If the mixture obtained is stirred into water in 2011, so a rust-protecting emulsion is formed that is used as a lubricating or drilling oil can be. Example e If you mix the N-diethv @ cvc @ ohe @ vlamine salt of alkoxyacetic acid, whose _-Ik1-trest has 7 to 9 carbon atoms. with 20 to 25 times the amount Motor oil. in this way a well-effective Kori-osi @) ii: protective oil is obtained.

Claims (1)

PATENTANSPRUCH: Verfahren zur Verminderung des korrodierenden Einflusses von Wasser un.i wäßrigen Lösungen, deren p11-Wert 6,3 nicht unterschreitet, auf Eisen und eiserne Gegenstände durch Zusatz wasserlöslicher Salze organischer Säuren, dadurch gekennzeichnet, daß Salze von Säuren der allgemeinen Formel (R. 0.)., # R' # C O O H, worin R einen beliebigen, wenigsten .i Kohlenstoffatome enthaltenden organischen Rest, R' einen Alkylenrest, der auch substituiert sein kann, und x die Zahlen r oder 2 bedeuten, zugesetzt werden. Zur Abgrenzung des Anmeldungsgegenstandes vom Stand der Technik ist im Erteilungsverfahren folgende Druckschrift in Betracht gezogen worden: USA.-Patentschrift ...... . Nr. 1 810 9.46. PATENT CLAIM: Process for reducing the corrosive influence of water and aqueous solutions, the p11 value of which does not fall below 6.3, on iron and iron objects by adding water-soluble salts of organic acids, characterized in that salts of acids of the general formula (R . 0.)., # R '# COOH, in which R is any organic radical containing at least 1 carbon atoms, R' is an alkylene radical which can also be substituted, and x is the number r or 2. To distinguish the subject of the application from the state of the art, the following publication was considered in the granting procedure: USA patent specification ....... No. 1 810 9.46.
DED81401D 1939-10-21 1939-10-22 Process for reducing the corrosive influence of water and aqueous solutions on iron Expired DE748650C (en)

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DED81401D DE748650C (en) 1939-10-21 1939-10-22 Process for reducing the corrosive influence of water and aqueous solutions on iron

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DED81401D DE748650C (en) 1939-10-21 1939-10-22 Process for reducing the corrosive influence of water and aqueous solutions on iron

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1157727B (en) * 1957-03-07 1963-11-21 Kloeckner Werke Ag Corrosion inhibitor for iron

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1810946A (en) * 1929-09-07 1931-06-23 Du Pont Noncorrosive solutions

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1810946A (en) * 1929-09-07 1931-06-23 Du Pont Noncorrosive solutions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1157727B (en) * 1957-03-07 1963-11-21 Kloeckner Werke Ag Corrosion inhibitor for iron

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