EP0104012A3 - Composition and method for simultaneously removing iron and copper scales from ferrous metal surfaces - Google Patents

Composition and method for simultaneously removing iron and copper scales from ferrous metal surfaces Download PDF

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Publication number
EP0104012A3
EP0104012A3 EP83304969A EP83304969A EP0104012A3 EP 0104012 A3 EP0104012 A3 EP 0104012A3 EP 83304969 A EP83304969 A EP 83304969A EP 83304969 A EP83304969 A EP 83304969A EP 0104012 A3 EP0104012 A3 EP 0104012A3
Authority
EP
European Patent Office
Prior art keywords
ferrous metal
metal surfaces
removing iron
composition
erythorbic acid
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.)
Withdrawn
Application number
EP83304969A
Other languages
German (de)
French (fr)
Other versions
EP0104012A2 (en
Inventor
Michael Beau Lawson
Larry Dale Martin
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.)
Halliburton Co
Original Assignee
Halliburton Co
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 Halliburton Co filed Critical Halliburton Co
Publication of EP0104012A2 publication Critical patent/EP0104012A2/en
Publication of EP0104012A3 publication Critical patent/EP0104012A3/en
Withdrawn legal-status Critical Current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
    • C23G1/08—Iron or steel
    • C23G1/088—Iron or steel solutions containing organic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

Compositions for simultaeously removing iron and copper scales from ferrous metal surfaces comprise water, one or more organic chelating acids which dissolve iron, one or more reducing agents selected from erythorbic acid, alkali metal salts of erythorbic acid, and ammonium salts of erythorbic acid, and, as copper complexing compound, thiourea and/or hexahydropyrimidine-2-thione. The com­ positions are utilized by contacting scale-containing ferrous metal surfaces therewith at temperatures of from about 75°F (24°C) to about 150°F (66°C).
EP83304969A 1982-09-21 1983-08-26 Composition and method for simultaneously removing iron and copper scales from ferrous metal surfaces Withdrawn EP0104012A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US42099882A 1982-09-21 1982-09-21
US420998 1999-10-20

Publications (2)

Publication Number Publication Date
EP0104012A2 EP0104012A2 (en) 1984-03-28
EP0104012A3 true EP0104012A3 (en) 1985-08-21

Family

ID=23668765

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83304969A Withdrawn EP0104012A3 (en) 1982-09-21 1983-08-26 Composition and method for simultaneously removing iron and copper scales from ferrous metal surfaces

Country Status (3)

Country Link
EP (1) EP0104012A3 (en)
CA (1) CA1204372A (en)
ES (1) ES8503728A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157322B (en) * 1984-03-29 1987-10-21 Diversey Limited Removal of iron oxide deposits
US4810405A (en) * 1987-10-21 1989-03-07 Dearborn Chemical Company, Limited Rust removal and composition thereof
CN1047409C (en) * 1997-03-07 1999-12-15 沈阳市巨龙防腐技术研究所 Normal-temp copper pickling corrosion inhibitor
DE10346192B4 (en) * 2003-10-02 2009-08-06 Thyssenkrupp Presta Teccenter Ag Method for rust removal of molded parts and use of the method
EP1809791B1 (en) 2004-09-25 2008-01-23 Chemetall GmbH Method for removing laser scales
CN112516793A (en) * 2020-11-10 2021-03-19 东华理工大学 Method for reducing Fe (III) EDTA by using sodium iso-VC and method for removing NO in waste gas by using EDTA
CN113337827A (en) * 2021-06-07 2021-09-03 山东惠中新材料科技有限公司 Environment-friendly rust remover

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2040546B1 (en) * 1970-08-14 1971-12-02 Hagen Feldmann Aqueous solution of an aliphatic carboxylic acid to remove ocher deposits or deposits
US3803042A (en) * 1972-04-27 1974-04-09 Halliburton Co Composition and method for removing copper containing scales from metals
DE2457235A1 (en) * 1974-12-04 1976-06-10 Peter Vodicka Protecting descaled pickled or cleaned metal articles - against attack by ferric cations by redn. using metals or water soluble cpds.

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53731B2 (en) * 1973-07-31 1978-01-11

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2040546B1 (en) * 1970-08-14 1971-12-02 Hagen Feldmann Aqueous solution of an aliphatic carboxylic acid to remove ocher deposits or deposits
US3803042A (en) * 1972-04-27 1974-04-09 Halliburton Co Composition and method for removing copper containing scales from metals
DE2457235A1 (en) * 1974-12-04 1976-06-10 Peter Vodicka Protecting descaled pickled or cleaned metal articles - against attack by ferric cations by redn. using metals or water soluble cpds.

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, vol. 78, no. 16, 23rd April 1973, page 223, no. 100930g, Columbus, Ohio, US; & JP-A-47 025 078 (TOKYO SHIBAURA ELECTRIC CO., LTD.) 19-10-1972 *
CHEMICAL ABSTRACTS, vol. 84, no. 4, 1st January 1976, page 262, no. 21059a, Columbus, Ohio, US; & JP-A-50 033 933 (KURITA WATER INDUSTRIES, LTD.) 02-04-1975 *

Also Published As

Publication number Publication date
ES525797A0 (en) 1985-03-01
EP0104012A2 (en) 1984-03-28
CA1204372A (en) 1986-05-13
ES8503728A1 (en) 1985-03-01

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB IT NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Designated state(s): DE FR GB IT NL

17P Request for examination filed

Effective date: 19850930

17Q First examination report despatched

Effective date: 19860526

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19870205

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MARTIN, LARRY DALE

Inventor name: LAWSON, MICHAEL BEAU