EP0025125B1 - Verwendung schwefelhaltiger Hydroxycarbonsäuren als Korrosionsinhibitoren für wässrige Systeme - Google Patents

Verwendung schwefelhaltiger Hydroxycarbonsäuren als Korrosionsinhibitoren für wässrige Systeme Download PDF

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Publication number
EP0025125B1
EP0025125B1 EP80104710A EP80104710A EP0025125B1 EP 0025125 B1 EP0025125 B1 EP 0025125B1 EP 80104710 A EP80104710 A EP 80104710A EP 80104710 A EP80104710 A EP 80104710A EP 0025125 B1 EP0025125 B1 EP 0025125B1
Authority
EP
European Patent Office
Prior art keywords
water
corrosion
carbon atoms
systems
aqueous systems
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
EP80104710A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0025125A1 (de
Inventor
Ulrich Dr. Zeidler
Volker Dr. Wehle
Ingo Wegener
Gabriele Rogall
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 AT80104710T priority Critical patent/ATE5488T1/de
Publication of EP0025125A1 publication Critical patent/EP0025125A1/de
Application granted granted Critical
Publication of EP0025125B1 publication Critical patent/EP0025125B1/de
Expired legal-status Critical Current

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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
    • 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
    • C23F11/16—Sulfur-containing compounds

Definitions

  • the invention relates to the use of 2-hydroxyalkyl-carboxyalkyl sulfides or sulfoxides and their water-soluble salts - hereinafter abbreviated to HCS - to prevent corrosion of metals, in particular in service water systems.
  • this phosphorus-containing combination can furthermore lead to the formation of apatite or apatite-like deposits when used in larger water hardness levels, which lead to malfunctions and are difficult to remove.
  • the use of these combinations with zinc salts at higher pH values (pH> 8.0) generally leads to increased silting up of the system due to the precipitation of zinc hydroxide.
  • Potassium, sodium, ammonium or alkanolamine salts are particularly suitable as alkali salts.
  • the amounts which are expediently added to the process water system are in the range from 0.5 to 100 g / m 3 , preferably 5 to 50 g / m 3 .
  • the 2-hydroxyalkyl-carboxyalkyl sulfides used can be prepared by reacting the salt of a corresponding mercaptocarboxylic acid such as thioglycolic acid, 2-mercaptopropionic acid or 3-mercaptopropionic acid in a polar solvent with the stoichiometric amount of an epoxide with a chain length of C 8 to C 18 .
  • a corresponding mercaptocarboxylic acid such as thioglycolic acid, 2-mercaptopropionic acid or 3-mercaptopropionic acid
  • the corresponding sulfoxides are obtained from the sulfides by oxidation with hydrogen peroxide. If the alkali salts, such as, in particular, potassium, sodium and ammonium salts or also alkanolamine salts, are not obtained directly during the preparation, they can be prepared by neutralizing the corresponding acids. Conversely, the corresponding acids can also be obtained from the salts by appropriate acidification.
  • the alkali salts such as, in particular, potassium, sodium and ammonium salts or also alkanolamine salts
  • the stone protection and dispersing agents listed above are combined with HCS in Amounts of 1 to 50 g / m 3 , preferably 3 to 10 g / m 3 are used.
  • non-ferrous metals such as in particular benzimidazole, benzotriazole or tolyltriazole
  • HCS benzimidazole
  • benzotriazole or tolyltriazole
  • the amounts used are in the range from 0.1 to 5 g / m 3 .
  • HCS can also be used in combination with zinc salts and / or compounds containing phosphorus.
  • Zinc chloride and zinc sulfate are particularly suitable as zinc salts. Quantities (calculated as zinc) of 0.5 to 10 g / m 3 , preferably 1 to 4 g / m 3 corresponding to an amount of 0.5 to 10 or 1 to 4 ppm are used.
  • phosphonic acids such as, for example, 1-hydroxyethane-1,1-diphosphonic acid, aminotrimethylenephosphonic acid and 2-phosphonobutane-1,2,4-tricarboxylic acid and their water-soluble salts or mixtures of these compounds, are particularly suitable as the phosphorus-containing compound. Such a combination can significantly increase the protection against corrosion.
  • biocidal substances such as glutaraldehyde, glyoxal, pentachlorophenol sodium or alkyloligoamides, preferably in the form of a reaction product of dodecylpropylenediamine and s-caprolactam in a ratio of 1: 2.
  • sulfur-containing hydroxycarboxylic acids of the general formula I indicated or their water-soluble salts can also be used quite generally as corrosion inhibitors, in particular for iron and in particular also as corrosion inhibitors in cooling lubricants for metal cutting.
  • test water used as the corrosive medium had the following analytical data:
  • the table below shows the reduction in the corrosive attack of a water by adding the specified agents compared to the untreated water.
  • a technical cooling system with a content of 1.2 m 3 and a circulation of 8 m 3 / h is operated with Düsseldorf city water.
  • the evaporation losses are compensated by adding fresh water to such an extent that the salt content does not exceed twice the original value.
  • an electro-chemically measured corrosion rate of 0.18 mm / a is set in the system.
  • HCS HCS was used together with other inhibitors and the corrosion rates, expressed in mm / year, were determined using the coupon method, in which the test water was passed through a coupon test section according to ASTM (D 2688/70) under the same conditions. was pumped.
  • X and Y are commercially available products based on di-N-butylamines from pre-fatty acids or their alkali salts.
  • Emulsifiable cooling lubricant concentrates with a commercially available rust inhibitor (A) based on fatty acid polydiethanolamide (reaction products of 1 mol fatty acid and 2 mol diethanolamine) on the one hand and 2-hydroxy-C 10 -alkyl- ⁇ -carboxyethyl sulfide (sodium salt) (B) on the other hand were produced .
  • A rust inhibitor
  • B 2-hydroxy-C 10 -alkyl- ⁇ -carboxyethyl sulfide

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
EP80104710A 1979-08-17 1980-08-09 Verwendung schwefelhaltiger Hydroxycarbonsäuren als Korrosionsinhibitoren für wässrige Systeme Expired EP0025125B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80104710T ATE5488T1 (de) 1979-08-17 1980-08-09 Verwendung schwefelhaltiger hydroxycarbonsaeuren als korrosionsinhibitoren fuer waessrige systeme.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2933388 1979-08-17
DE19792933388 DE2933388A1 (de) 1979-08-17 1979-08-17 Korrosionsinhibitoren

Publications (2)

Publication Number Publication Date
EP0025125A1 EP0025125A1 (de) 1981-03-18
EP0025125B1 true EP0025125B1 (de) 1983-11-30

Family

ID=6078710

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80104710A Expired EP0025125B1 (de) 1979-08-17 1980-08-09 Verwendung schwefelhaltiger Hydroxycarbonsäuren als Korrosionsinhibitoren für wässrige Systeme

Country Status (3)

Country Link
EP (1) EP0025125B1 (es)
AT (1) ATE5488T1 (es)
DE (1) DE2933388A1 (es)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU614636B2 (en) * 1988-07-21 1991-09-05 Ciba Specialty Chemicals Holding Inc. Corrosion inhibition
DE102006054761A1 (de) * 2006-11-14 2008-05-15 Hansgrohe Ag Bereitstellung von wasserführenden Bauteilen aus Messinglegierungen mit verringerter Metallionenfreisetzung
US9080093B2 (en) 2013-02-13 2015-07-14 Basf Se Antifreeze concentrate with corrosion protection and aqueous coolant composition produced therefrom
RS59846B1 (sr) 2013-02-13 2020-02-28 Basf Se Antifriz koncentrat sa zaštitom od korozije i vodena kompozicija rashladnog sredstva proizvedena od njega
CA3115629A1 (en) * 2018-10-08 2020-04-16 Ecolab Usa Inc. Sulfide-based compounds and uses thereof

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE916878C (de) * 1941-05-16 1954-08-19 Dehydag Gmbh Verfahren zur Verminderung des korrodierenden Einflusses von Wasser und waessrigen Loesungen auf Eisen
FR1195917A (fr) * 1957-06-29 1959-11-20 Naarden Chem Fab Thiolactones odoriférantes
US2981686A (en) * 1958-10-30 1961-04-25 Shell Oil Co Metal working lubricants
DE2558729A1 (de) * 1975-12-24 1977-07-14 Hoechst Ag Neue mercaptocarbonsaeureester und verfahren zu deren herstellung
DE2730645A1 (de) * 1977-07-07 1979-01-25 Henkel Kgaa Verwendung von telomerisaten aus mercaptanen mit acrylverbindungen als steinschutz- und/oder korrosionsschutzmittel

Also Published As

Publication number Publication date
EP0025125A1 (de) 1981-03-18
ATE5488T1 (de) 1983-12-15
DE2933388C2 (es) 1987-03-12
DE2933388A1 (de) 1981-03-26

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