GB836160A - Method for removing copper-containing iron oxide incrustations from a ferrous metal surface - Google Patents

Method for removing copper-containing iron oxide incrustations from a ferrous metal surface

Info

Publication number
GB836160A
GB836160A GB25017/57A GB2501757A GB836160A GB 836160 A GB836160 A GB 836160A GB 25017/57 A GB25017/57 A GB 25017/57A GB 2501757 A GB2501757 A GB 2501757A GB 836160 A GB836160 A GB 836160A
Authority
GB
United Kingdom
Prior art keywords
copper
thiourea
iron oxide
picoline
incrustation
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
GB25017/57A
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.)
Dow Chemical Co
Original Assignee
Dow Chemical 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=600887&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=GB836160(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Dow Chemical Co filed Critical Dow Chemical Co
Publication of GB836160A publication Critical patent/GB836160A/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
    • C23G1/08—Iron or steel

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)

Abstract

A copper-containing iron oxide incrustation is removed from a ferrous metal surface without redeposition of copper thereon by contacting such surface with a composition comprising an aqueous solution of an acid capable of dissolving the iron oxide and copper, and a urea derivative selected from thiourea, 1,3 - dimethyl thiourea, 1,3 - diethyl thiourea, 1,3 - diisopropyl thiourea and ethylene thiourea, the urea derivative being present in an amount of 2-20 pounds per pound of copper in the incrustation to be removed. The acid may be hydrochloric, sulphuric or phosphoric acid and, in general, should be in a concentration of 2.25% by weight of the solution. The composition may also contain (a) an oxidizing agent such as iron oxide (Fe2O3 or Fe3O4) or ferric chloride, to ensure the oxidation of the copper in the incrustation to the cuprous state, and (b) a corrosion inhibitor of the organic nitrogen-base type, such as pyridine, a-picoline, b -picoline, g -picoline, 2 - n amyl pyridine, 2,4 - lutidine, 2,6 - lutidine, 2,4,6 - collidine, quinoline, lepidine, quinaldine, rosin amine and hydrogenated rosin amine. U.S.A. Specifications 2,510,063, 2,510,284 and 2,567,835 are referred to.
GB25017/57A 1956-09-28 1957-08-08 Method for removing copper-containing iron oxide incrustations from a ferrous metal surface Expired GB836160A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US61289456A 1956-09-28 1956-09-28
US660999A US2959555A (en) 1956-09-28 1957-05-23 Copper and iron containing scale removal from ferrous metal

Publications (1)

Publication Number Publication Date
GB836160A true GB836160A (en) 1960-06-01

Family

ID=600887

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25017/57A Expired GB836160A (en) 1956-09-28 1957-08-08 Method for removing copper-containing iron oxide incrustations from a ferrous metal surface

Country Status (5)

Country Link
US (1) US2959555A (en)
BE (1) BE586275A (en)
DE (1) DE1142488B (en)
FR (1) FR1187034A (en)
GB (1) GB836160A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3530000A (en) * 1966-02-04 1970-09-22 Exxon Research Engineering Co Cleaning of liquid circulating equipment
CN103498164A (en) * 2013-09-04 2014-01-08 大连理工大学 Environment-friendly cleaning liquid and cleaning method for oxide layer of hot-rolled steel plate

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3074825A (en) * 1962-04-03 1963-01-22 Chemical Cleaning Inc Method of removing copper-containing iron oxide incrustations from ferriferous surfaces
USRE30796E (en) * 1962-07-23 1981-11-17 The Dow Chemical Co. Scale removal, ferrous metal passivation and compositions therefor
US3353995A (en) * 1964-03-26 1967-11-21 Dow Chemical Co Removal of ferrous sulfide deposits
NL149551B (en) * 1964-08-04 1976-05-17 Dow Chemical Co METHOD FOR CLEANING AND PASSIVING IRON-CONTAINING METAL SURFACES ON WHICH METALLIC COPPER HAS BEEN DEPOSITED.
US3460989A (en) * 1964-09-02 1969-08-12 John H Rusch Method of treating ferrous metal surfaces
USRE30714E (en) * 1965-10-18 1981-08-18 The Dow Chemical Company Removal of copper containing incrustations from ferrous surfaces
US3496017A (en) * 1966-04-28 1970-02-17 Atomic Energy Commission Method and composition for decontamination of stainless steel surfaces
US3547697A (en) * 1966-10-05 1970-12-15 Halliburton Co Method of removing copper containing iron oxide scales from iron
US3466192A (en) * 1967-01-23 1969-09-09 Amchem Prod Corrosion prevention process
US3458354A (en) * 1967-12-21 1969-07-29 Dow Chemical Co Method of removing copper-containing scale from metal surfaces
US3627687A (en) * 1968-02-09 1971-12-14 Dow Chemical Co Cleaning of ferrous metal surfaces
US3854996A (en) * 1972-04-27 1974-12-17 Halliburton Co Method for removing magnetite scale
US3819527A (en) * 1972-11-06 1974-06-25 Amchem Prod Composition and method for inhibiting acid attack of metals
US4025359A (en) * 1974-04-01 1977-05-24 Connelly Jr George F Inhibited acid composition for cleaning water systems
JPS5337150A (en) * 1976-09-02 1978-04-06 Nippon Packaging Kk Surface treatment of zinc or zinc alloy
US4180469A (en) * 1977-12-30 1979-12-25 Amchem Products, Inc. Dithiocarbamate sulfonium salt inhibitor composition
US4370197A (en) * 1981-06-24 1983-01-25 International Business Machines Corporation Process for etching chrome
US4993442A (en) * 1981-11-05 1991-02-19 Union Oil Company Of California Methods for removing obstructions from conduits using sulfuric acid adducts
FR2681639B1 (en) * 1991-09-24 1993-11-05 Dowell Schlumberger Cie Services NOVEL COMPOSITIONS FOR IRON CONTROL DURING ACID TREATMENTS IN OIL WELLS, AND INDUSTRIAL CLEANING.
US6852879B2 (en) * 2001-10-05 2005-02-08 Bp Corporation North America Inc. Method of removing iron oxide deposits from the surface of titanium components
US6841084B2 (en) * 2002-02-11 2005-01-11 Nikko Materials Usa, Inc. Etching solution for forming an embedded resistor
US7285229B2 (en) * 2003-11-07 2007-10-23 Mec Company, Ltd. Etchant and replenishment solution therefor, and etching method and method for producing wiring board using the same

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1961096A (en) * 1932-03-31 1934-05-29 Peter C Reilly Inhibiting process and product
US1996730A (en) * 1933-10-11 1935-04-02 Sharples Solvents Corp Corrosion inhibitor
US2049517A (en) * 1934-06-06 1936-08-04 American Chem Paint Co Method of and material for inhibiting or retarding acid corrosion of ferrous metals
US2071966A (en) * 1936-01-22 1937-02-23 Du Pont Pickling inhibitor and process
US2215077A (en) * 1936-12-19 1940-09-17 Solvay Process Co Preventing corrosion of ferrous metals
US2220451A (en) * 1938-02-09 1940-11-05 Du Pont Composition
US2474526A (en) * 1940-06-15 1949-06-28 Monsanto Chemicals Picking of stainless steels
US2318559A (en) * 1941-04-30 1943-05-04 Monsanto Chemicals Material for and process of pickling copper or its alloys
US2617771A (en) * 1946-09-27 1952-11-11 Hooker Electrochemical Co Corrosion retarder
US2485529A (en) * 1948-08-14 1949-10-18 Dow Chemical Co Composition for removing scale from ferrous metal surfaces
US2618603A (en) * 1949-02-04 1952-11-18 Procter & Gamble Detergent compositions containing metal discoloration inhibitors
GB683638A (en) * 1949-05-26 1952-12-03 Ethicon Suture Lab Inc Improvements in pickling bath
US2567835A (en) * 1949-08-29 1951-09-11 Dow Chemical Co Removing copper-containing incrustations from steam generators
US2628199A (en) * 1949-12-21 1953-02-10 Frederick A Lowenheim Tarnish remover
LU30914A1 (en) * 1950-10-27
US2769690A (en) * 1952-06-23 1956-11-06 Phillips Petroleum Co Inhibiting corrosion of ferrous metals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3530000A (en) * 1966-02-04 1970-09-22 Exxon Research Engineering Co Cleaning of liquid circulating equipment
CN103498164A (en) * 2013-09-04 2014-01-08 大连理工大学 Environment-friendly cleaning liquid and cleaning method for oxide layer of hot-rolled steel plate

Also Published As

Publication number Publication date
US2959555A (en) 1960-11-08
FR1187034A (en) 1959-09-04
BE586275A (en) 1960-07-05
DE1142488B (en) 1963-01-17

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