EP0009247B2 - Korrosionsinhibitoren für saure Lösungen - Google Patents

Korrosionsinhibitoren für saure Lösungen Download PDF

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Publication number
EP0009247B2
EP0009247B2 EP79103545A EP79103545A EP0009247B2 EP 0009247 B2 EP0009247 B2 EP 0009247B2 EP 79103545 A EP79103545 A EP 79103545A EP 79103545 A EP79103545 A EP 79103545A EP 0009247 B2 EP0009247 B2 EP 0009247B2
Authority
EP
European Patent Office
Prior art keywords
acid
corrosion inhibitors
acidic solutions
surfactants
concentration
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
EP79103545A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0009247B1 (de
EP0009247A1 (de
Inventor
Siegfried Bragulla
Walther Dr. Grosse Böwing
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6050362&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0009247(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Henkel AG and Co KGaA filed Critical Henkel AG and Co KGaA
Priority to AT79103545T priority Critical patent/ATE518T1/de
Publication of EP0009247A1 publication Critical patent/EP0009247A1/de
Publication of EP0009247B1 publication Critical patent/EP0009247B1/de
Application granted granted Critical
Publication of EP0009247B2 publication Critical patent/EP0009247B2/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
    • C23F11/04—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

Definitions

  • the object of the invention is the use of certain alkyl monophosphonic acids in a mixture with surfactants as corrosion inhibitors in acidic solutions for metals.
  • US Pat. No. 2,913,420 also describes the corrosion-inhibiting action of chromate against steel in acidic, saline solutions, in particular those containing calcium chloride. The effect is considerably improved by adding surfactants.
  • alkylphosphonic acid such as octyl- and nonylphosphonic acid
  • corrosion inhibitors Nowhere is there any mention of a possible synergistic effect of alkylphosphonic acid with surfactants.
  • the object of the present invention was to determine corrosion inhibitors for acidic solutions with a greater range of applications. It has been found that good results are obtained if alkyl monophosphonic acids having 8 to 10 carbon atoms in a mixture with surfactants are used as corrosion inhibitors in acidic solutions.
  • the mixing ratio in% by weight of alkyl monophosphonic acid: surfactant can vary to a considerable extent such as 2: 1 to 1:10. However, a mixing ratio of approximately 1: 1 is preferably used.
  • the concentration of the alkyl monophosphonic acid can be in the range from 0.001 to 0.5, preferably 0.02 to 0.2 g / l. This concentration corresponds to 1 to 500 ppm, preferably 20 to 100 ppm.
  • the surfactants used can be anionic, cationic or nonionic in character. Mixtures of different surfactants can also be used. However, non-ionic surfactants such as, in particular, adducts of ethylene oxide and / or propylene oxide with fatty alcohols, fatty amines or fatty acids with 12 to 18 carbon atoms or with alkylphenols with 6 to 15 carbon atoms in the alkylette are expediently used, in particular with regard to undesirable foam development.
  • the acid concentration in the acidic solutions can range from 0.1 to 20% by weight.
  • the corrosion inhibitors according to the invention are preferably used for acidic solutions whose concentration is between 0.5 and 10% by weight.
  • the attack of various inorganic acids given in detail in relation to aluminum in Table 1 below was checked.
  • the concentration of the acid was 1% by weight.
  • the solution also contained 0.02% of an adduct of 10 moles of ethylene oxide with nonylphenol.
  • the working temperature was 80 ° C.
  • the concentration of the corresponding phosphonic acid was 0.2 g / l.
  • the inhibitory value was determined after an exposure time of 1 hour.
  • the inhibition value is calculated as follows: If hexylphosphonic acid is used, the inhibition value drops to 32%. The use of tetradecylphosphonic acid also leads to poorer results.
  • Example 1 Under the conditions - as stated in Example 1 - the attack of mineral acids on steel was checked, again using mixtures of octyl or decylphosphonic acid with nonionic surfactant.
  • the mixing ratio in weight percent was about 1: 1, the concentration of alkyl monophosphonic acid and surfactant each 0.02% by weight.
  • the attack of 1% sulfuric acid on stainless steel is inhibited by a mixture of 0.02% octyl- or decylphosphonic acid with 0.02% of a surfactant trialkylbenzenesulfonate.
  • the inhibition value was 80 ° C and a treatment time of 1 hour at 95 and 98%. If, on the other hand, hexylphosphonic acid is used in combination with the surfactant mentioned, the inhibitory value drops to about 70%.
  • Table 3 below shows the inhibition values obtained for the individual mineral acids against brass under the conditions of Example 1.
  • Table 6 shows the inhibition values obtained in 1% phosphoric acid with different amounts of surfactant (adduct of 10 moles of ethylene oxide with nonylphenol) against aluminum.

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)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Anti-Oxidant Or Stabilizer Compositions (AREA)
  • Detergent Compositions (AREA)
EP79103545A 1978-09-25 1979-09-20 Korrosionsinhibitoren für saure Lösungen Expired EP0009247B2 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT79103545T ATE518T1 (de) 1978-09-25 1979-09-20 Korrosionsinhibitoren fuer saure loesungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2841641A DE2841641C2 (de) 1978-09-25 1978-09-25 Verwendung von Alkylmonophosphonsäuren als Korrosionsinhibitoren
DE2841641 1978-09-25

Publications (3)

Publication Number Publication Date
EP0009247A1 EP0009247A1 (de) 1980-04-02
EP0009247B1 EP0009247B1 (de) 1981-12-30
EP0009247B2 true EP0009247B2 (de) 1986-04-30

Family

ID=6050362

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79103545A Expired EP0009247B2 (de) 1978-09-25 1979-09-20 Korrosionsinhibitoren für saure Lösungen

Country Status (5)

Country Link
EP (1) EP0009247B2 (enrdf_load_stackoverflow)
JP (1) JPS5544599A (enrdf_load_stackoverflow)
AT (1) ATE518T1 (enrdf_load_stackoverflow)
DE (1) DE2841641C2 (enrdf_load_stackoverflow)
DK (1) DK153850C (enrdf_load_stackoverflow)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2138799B (en) * 1983-04-25 1988-02-10 Dearborn Chemicals Ltd Biocide
DE3340033A1 (de) * 1983-11-05 1985-05-15 Henkel KGaA, 4000 Düsseldorf Verfahren zur herstellung eines waeschebehandlungsmittels
JPS6447902U (enrdf_load_stackoverflow) * 1987-09-18 1989-03-24
EP0656420A4 (en) * 1992-08-21 1997-04-02 Showa Pharm Chem Ind CHEMICAL AND MICROBIOLOGICAL TEST DEVICE.
WO1996012832A1 (fr) * 1994-10-21 1996-05-02 Nippon Paint Co., Ltd. Solution aqueuse et acide servant a nettoyer de l'aluminium et methode de nettoyage afferente
US5955352A (en) * 1994-12-22 1999-09-21 Showa Yakuhin Kako Co., Ltd. Instruments for chemical and microbiological tests
US20080108537A1 (en) * 2006-11-03 2008-05-08 Rees Wayne M Corrosion inhibitor system for mildly acidic to ph neutral halogen bleach-containing cleaning compositions
DE102007029837A1 (de) * 2007-06-28 2009-01-02 Siemens Ag Zusatz für ein Reinigungs- und/oder Pflegemittel zur Verwendung in Haushaltsgeräten sowie derartiges Reinigungs- und/oder Pflegemittel
ES2574561T3 (es) * 2007-07-10 2016-06-20 Atotech Deutschland Gmbh Solución y proceso para incrementar la capacidad de soldadura y la resistencia a la corrosión de la superficie de un metal o de una aleación metálica
WO2010081833A2 (en) 2009-01-14 2010-07-22 Atotech Deutschland Gmbh Solution and process for increasing the solderability and corrosion resistance of a metal or metal alloy surface
JP5691039B2 (ja) * 2011-06-16 2015-04-01 中部キレスト株式会社 酸洗浄用腐食抑制剤組成物
GB201400299D0 (en) * 2014-01-08 2014-02-26 Rhodia Operations Corrosion inhibitors
US12241021B2 (en) 2018-05-11 2025-03-04 Dorf Ketal Chemicals Fze Method for fracking of simulation of hydrocarbon bearing formation
CA3004675A1 (en) 2018-05-11 2019-11-11 Fluid Energy Group Ltd. Novel corrosion inhibition composition and fracking method
DE102020104085A1 (de) * 2020-02-17 2021-08-19 Metall-Chemie Technologies Gmbh Naturstoffbasierte Phosphonsäuren als saure Korrosionsinhibitoren
JP7717500B2 (ja) * 2020-06-12 2025-08-04 花王株式会社 鋼板用洗浄剤

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913420A (en) * 1956-10-18 1959-11-17 Dow Chemical Co Corrosion inhibition of brine
CA813301A (en) * 1966-09-06 1969-05-20 E. Zimmerer Roger Detergent composition
US3630790A (en) * 1969-05-13 1971-12-28 Dow Chemical Co Method of protection of metal surfaces from corrosion
US3746328A (en) * 1971-09-28 1973-07-17 Nat Steel Corp Fluid bearing support for tiltable metallurgical vessels
US3837803A (en) * 1972-07-11 1974-09-24 Betz Laboratories Orthophosphate corrosion inhibitors and their use
DE2344197A1 (de) * 1973-09-01 1975-03-27 Dynamit Nobel Ag Funktionelle organophosphonsaeureester als konservierende haftvermittler oder ueberzuege fuer metalle

Also Published As

Publication number Publication date
JPS5544599A (en) 1980-03-28
ATE518T1 (de) 1982-01-15
EP0009247B1 (de) 1981-12-30
DE2841641C2 (de) 1986-07-03
DK153850C (da) 1989-01-30
JPS6246635B2 (enrdf_load_stackoverflow) 1987-10-02
DK153850B (da) 1988-09-12
DK358779A (da) 1980-03-26
EP0009247A1 (de) 1980-04-02
DE2841641A1 (de) 1980-04-03

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