DE3063771D1 - Use of acidic phosphoric acid esters or their salts as corrosion inhibitors for metals - Google Patents

Use of acidic phosphoric acid esters or their salts as corrosion inhibitors for metals

Info

Publication number
DE3063771D1
DE3063771D1 DE8080104291T DE3063771T DE3063771D1 DE 3063771 D1 DE3063771 D1 DE 3063771D1 DE 8080104291 T DE8080104291 T DE 8080104291T DE 3063771 T DE3063771 T DE 3063771T DE 3063771 D1 DE3063771 D1 DE 3063771D1
Authority
DE
Germany
Prior art keywords
metals
salts
phosphoric acid
acid esters
alkane polyol
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
DE8080104291T
Other languages
German (de)
Inventor
Gunther Sorbe
Horst-Dieter Dr Wasel-Nielen
Lothar Westermann
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.)
Hoechst AG
Original Assignee
Hoechst 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 Hoechst AG filed Critical Hoechst AG
Priority to DE8080104291T priority Critical patent/DE3063771D1/en
Application granted granted Critical
Publication of DE3063771D1 publication Critical patent/DE3063771D1/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
    • 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
    • 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
    • C23G1/066—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors phosphorus-containing compounds

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)

Abstract

1. Use of acid phosphoric acid esters or their salts as agents inhibiting the corrosion of metals, characterised in that, in order to inhibit the corrosion of metals caused by inorganic and/or organic acids or their aqueous solutions, use is made of that agent which has been obtained by subjecting phosphorus(V)oxide to reaction with a mixture consisting of a monohydric alcohol and an alkane polyol having 2 to 12 carbon atoms and 2 to 6 hydroxyl groups while respecting a molar ratio of phosphorus(V)oxide to monohydric alcohol to alkane polyol of 1 : 2 : 4/n, n standing for the number of hydroxyl groups in the alkane polyol molecule, or while using a stoichiometric excess of the alcoholic component, and mixing or kneading the reaction components at a temperature between about 0 degree C and 120 degrees C with exclusion of moisture and in the presence of an inert gas, within a period of about 1 to 6 hours.
DE8080104291T 1979-10-12 1980-07-22 Use of acidic phosphoric acid esters or their salts as corrosion inhibitors for metals Expired DE3063771D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8080104291T DE3063771D1 (en) 1979-10-12 1980-07-22 Use of acidic phosphoric acid esters or their salts as corrosion inhibitors for metals

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792941419 DE2941419A1 (en) 1979-10-12 1979-10-12 USE OF ACID PHOSPHORIC ACID ESTERS OR THEIR SALTS AS AN AGENT TO PREVENT CORROSION OF METALS
DE8080104291T DE3063771D1 (en) 1979-10-12 1980-07-22 Use of acidic phosphoric acid esters or their salts as corrosion inhibitors for metals

Publications (1)

Publication Number Publication Date
DE3063771D1 true DE3063771D1 (en) 1983-07-21

Family

ID=6083376

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19792941419 Withdrawn DE2941419A1 (en) 1979-10-12 1979-10-12 USE OF ACID PHOSPHORIC ACID ESTERS OR THEIR SALTS AS AN AGENT TO PREVENT CORROSION OF METALS
DE8080104291T Expired DE3063771D1 (en) 1979-10-12 1980-07-22 Use of acidic phosphoric acid esters or their salts as corrosion inhibitors for metals

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19792941419 Withdrawn DE2941419A1 (en) 1979-10-12 1979-10-12 USE OF ACID PHOSPHORIC ACID ESTERS OR THEIR SALTS AS AN AGENT TO PREVENT CORROSION OF METALS

Country Status (3)

Country Link
EP (1) EP0028674B1 (en)
AT (1) ATE3781T1 (en)
DE (2) DE2941419A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4013243A1 (en) * 1990-04-26 1991-10-31 Hoechst Ag AGAINST METAL CORROSION INHIBITED BRAKE FLUIDS BASED ON GLYCOL COMPOUNDS
EP2746375B1 (en) 2012-12-20 2021-07-28 Chemische Fabrik Dr. Weigert GmbH & Co KG Instrument spray

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3276916A (en) * 1961-09-22 1966-10-04 Lubrizol Corp Inhibition of corrosion of metal surfaces
US3580855A (en) * 1969-04-09 1971-05-25 Rohm & Haas Process for inhibition of scale and corrosion using a polyfunctional phosphated polyol ester having at least 75% primary phosphate ester groups
GB1311995A (en) * 1970-04-23 1973-03-28 Witco Chemical Corp Process for preparing surface active phosphate esters
DE2739916C2 (en) * 1977-09-05 1983-07-28 Hoechst Ag, 6230 Frankfurt Mixtures of acidic orthophosphoric acid esters
DE2756747A1 (en) * 1977-12-20 1979-06-28 Basf Ag CORROSION PROTECTION AGENT

Also Published As

Publication number Publication date
EP0028674B1 (en) 1983-06-15
ATE3781T1 (en) 1983-06-15
EP0028674A1 (en) 1981-05-20
DE2941419A1 (en) 1981-04-23

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Legal Events

Date Code Title Description
8339 Ceased/non-payment of the annual fee