DE744789C - Process for preventing the corrosion of metals by acids - Google Patents

Process for preventing the corrosion of metals by acids

Info

Publication number
DE744789C
DE744789C DEI69861D DEI0069861D DE744789C DE 744789 C DE744789 C DE 744789C DE I69861 D DEI69861 D DE I69861D DE I0069861 D DEI0069861 D DE I0069861D DE 744789 C DE744789 C DE 744789C
Authority
DE
Germany
Prior art keywords
metals
corrosion
acids
preventing
alcohols
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
DEI69861D
Other languages
German (de)
Inventor
Dr Friedrich Ebel
Dr Otto Sauer
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to DEI69861D priority Critical patent/DE744789C/en
Priority to NL110582A priority patent/NL63418C/xx
Priority to BE450004D priority patent/BE450004A/fr
Priority to FR893407D priority patent/FR893407A/en
Application granted granted Critical
Publication of DE744789C publication Critical patent/DE744789C/en
Expired legal-status Critical Current

Links

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
    • C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
    • C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
    • C23G1/068—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors compounds containing a C=C bond
    • 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
    • C23F11/04—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent in markedly acid liquids

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)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Description

Es ist bekannt, sauren Flüssigkeiten, beispielsweise sauren Bädern, die zum Beizen von Metallen dienen, organische Stoffe zuzusetzen', die den Angriff der Säure auf Metalle verhindern, jedoch, die eigentliche Aufgabe der Säuren, im Falle des Beizens die Beseitigung der auf der Oberfläche des Metalles haftenden Überzüge aus Metallverbindungen, nicht beeinträchtigen. Beispielsweise hat man als Sparbeizen Rückstände der Teerdestillation, Hexamethylentetramin, Thioharnstoff, Aldehyde, Kondensationsprodukte von Thioharnstoffen mit Aldehyden oder heterocyclische Stickstoff-Sauerstoff-Verbindungen verwende):.It is known to use acidic liquids, for example acidic baths, which are used to pickle metals, add organic substances', which prevent the acid from attacking metals, however, the real task of acids, in the case of pickling, the elimination of those on the surface of the metal adhesive coatings made of metal compounds. For example if you have residues of tar distillation, hexamethylenetetramine, thiourea, Aldehydes, condensation products of thioureas with aldehydes or heterocyclic Use nitrogen-oxygen compounds):

Es wurde nun gefunden, daß Alkohole der Acetylenreihe, z. B. Propargylalkohol und seäne Homologen, wie Butin-2-ol-i, Butiin-3-0I-2- und 2-Methylbutin-3-ol-2, 2-Phenylbütin.-3-ol-2/ferner Butin-2-diol-i, 4 und dessen Homologe, wie Hexin-3-diol-2,5 und 2, s-Dimethylhexin-3-diol-2, 5, besonders geeignet sind, die Korrosion von Metallen durch Säuren zu verhindern oder zu verringern. Die Hemmungswirkung derartiger Alkohole ist zwar nicht größer als die der für den glei- ' chen Zweck bereits empfohlenen Sulfide und Sulfoxyde (vgl. .Patentschriften 579 864-und 579955), doch sind mit der WasserlösEchkeit der Alkohole der Acetylenreihe für den hier »in Betracht kommenden Verwendungszweck wertvolle Vorteile (verbunden. Man kann nämlich die bei unlöslichen. Verbündulnjgen, zu denen die bekannten Sulfide uind Sulfoxyde gehören, zur 'biesserien. Verteilung häufig als notwendig erachteten Nejtzsmttel sparen. Die wasserunlöslichen Beizmittel haften nach der Behandlung hartnäckig an. der Metalloberfläche, wohingegen die Acetylenalkohole praktisch vollständig in der Beiz- ot lauge gelöst bleiben, so daß man diese mehrfach benutzen kann und auch! das! behandelteIt has now been found that alcohols of the acetylene series, e.g. B. propargyl alcohol and similar homologues, such as butyn-2-ol-i, butyn-3-0I-2- and 2-methylbutyn-3-ol-2, 2-phenylbutyn-3-ol-2 / further Butyne-2-diol-1,4 and its homologues, such as hexyne-3-diol-2,5 and 2, s-dimethylhexyne-3-diol-2, 5, are particularly suitable for the corrosion of metals by Prevent or reduce acids. The inhibitory effect of such alcohols is not greater than that of the sulphides already recommended for the same purpose and Sulphoxides (see. Patents 579 864 and 579955), but with the water solubility of the alcohols of the acetylene series for the here »eligible use valuable advantages (connected. Man can namely the with insoluble. Alliances, to which the well-known sulphides and sulphoxides belong to the series. distribution save money that is often considered necessary. The water-insoluble pickling agents adhere persistently after treatment. the metal surface, whereas the acetylene alcohols Remain practically completely dissolved in the pickling solution, so that this can be repeated several times can use and also! the! treated

Metallstüclc durch, einfaches Spülen vollständig sauber erhält.Metal piece through, simple rinsing completely gets clean.

Mit Zusätzen" · derartiger Alkohole der Acetylenreihe können beispielsweise Aluminium, Zink, Eisen und ihre Legierungen gegen den Angriff der verschiedensten Säuren geschützt werden. Die Schutzwirkung hängt von der Stärke der Säure, der Temperatur und der zugesetzten Menge des Acetylenalkoliols· ab.With additions of such alcohols of the acetylene series can for example aluminum, zinc, iron and their alloys against the Attack of the most diverse acids are protected. The protective effect depends on the Strength of the acid, the temperature and the amount of acetylene alcohol added.

ίο Die vorteilhafte Wirkung der Acetylenalkohole sei durch das nachstehende Beispiel erläutert.ίο The beneficial effects of acetylene alcohols is illustrated by the example below.

Streifen von Eisenblech, wurden ι Stunde lang bei 400 dem Angriff einer wässerigen Salzsäure vom spezifischen Gewicht ΐ,,ΐοα ausgesetzt, die jeweils mit folgenden Zusätzen versehen war:Strip of sheet iron, ι hour, at 40 0 ΐ the attack of an aqueous hydrochloric acid of specific gravity ,, exposed ΐοα each of which was provided with the following additions:

1. ohne Zusatz,1. without addition,

2. mit 10/0 Propargylalkohol,
3. mit 10/0 Butin-2-diol-1, 4.2. with 10/0 propargyl alcohol,
3. with 10/0 butyne-2-diol-1,4.

Nach der Beendigung der Behandlung wurde der Gewichtsverlust der Eisenbleche bestimmt. Er betrug ohne Zusatz 80 mg/cm2, bei Zusatz von Butin-2-diol-1, 4 unter 2 mg/cm2 und bei Zusatz von Propargylalkohol etwas über o, 5 mg/cm2.After the completion of the treatment, the weight loss of the iron sheets was determined. Without addition it was 80 mg / cm 2 , with the addition of butyn-2-diol-1,4 it was less than 2 mg / cm 2 and with the addition of propargyl alcohol it was slightly above 0.5 mg / cm 2 .

Claims (1)

Patentanspruch:Claim: Verfahren zur Verhinderung der Korrosion von Metallen durch saure Flüssigkeiten, gekennzeichnet durch den Zusatz von Alkoholen der Acetylenreihe zur sauren Flüssigkeit.Process for preventing the corrosion of metals by acidic liquids, characterized by the addition of alcohols of the acetylene series to the acidic liquid. Zur Abgrenzung des Anmeldungsgegen-Standes vom Stand der Technik sind am Erteilungsverfahren folgende Druckschriften in Betracht gezogen worden:To distinguish the subject matter of the application from the state of the art, the granting procedure is under way the following publications have been considered: deutsche Patentschriften .... Nr. 579 864, 579 955-German patents .... No. 579 864, 579 955-
DEI69861D 1941-06-19 1941-06-19 Process for preventing the corrosion of metals by acids Expired DE744789C (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DEI69861D DE744789C (en) 1941-06-19 1941-06-19 Process for preventing the corrosion of metals by acids
NL110582A NL63418C (en) 1941-06-19 1943-03-20
BE450004D BE450004A (en) 1941-06-19 1943-04-02
FR893407D FR893407A (en) 1941-06-19 1943-04-09 Process for preventing corrosion of metals by acids

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEI69861D DE744789C (en) 1941-06-19 1941-06-19 Process for preventing the corrosion of metals by acids

Publications (1)

Publication Number Publication Date
DE744789C true DE744789C (en) 1944-01-25

Family

ID=7197056

Family Applications (1)

Application Number Title Priority Date Filing Date
DEI69861D Expired DE744789C (en) 1941-06-19 1941-06-19 Process for preventing the corrosion of metals by acids

Country Status (4)

Country Link
BE (1) BE450004A (en)
DE (1) DE744789C (en)
FR (1) FR893407A (en)
NL (1) NL63418C (en)

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
DE1172925B (en) * 1957-02-16 1964-06-25 Basf Ag Anti-corrosive agents
DE1265533B (en) * 1958-11-26 1968-04-04 Amchem Prod Inhibitors
WO2005033364A1 (en) * 2003-09-30 2005-04-14 Basf Aktiengesellschaft Method for pickling metallic surfaces by using alkoxylated alkynols

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2592397A1 (en) * 1985-12-26 1987-07-03 Maron Hugues Corrosion inhibitor for pickling baths for metal surfaces

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE579864C (en) * 1931-08-14 1933-07-01 I G Farbenindustrie Akt Ges Metal saving stain
DE579955C (en) * 1931-03-06 1933-07-03 I G Farbenindustrie Akt Ges Preparations for protecting metals against attack by non-oxidizing acids

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE579955C (en) * 1931-03-06 1933-07-03 I G Farbenindustrie Akt Ges Preparations for protecting metals against attack by non-oxidizing acids
DE579864C (en) * 1931-08-14 1933-07-01 I G Farbenindustrie Akt Ges Metal saving stain

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1172925B (en) * 1957-02-16 1964-06-25 Basf Ag Anti-corrosive agents
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
DE1265533B (en) * 1958-11-26 1968-04-04 Amchem Prod Inhibitors
WO2005033364A1 (en) * 2003-09-30 2005-04-14 Basf Aktiengesellschaft Method for pickling metallic surfaces by using alkoxylated alkynols

Also Published As

Publication number Publication date
BE450004A (en) 1943-05-31
NL63418C (en) 1949-06-15
FR893407A (en) 1944-06-08

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