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GB1183006A - Regeneration of Etchant. - Google Patents

Regeneration of Etchant.

Info

Publication number
GB1183006A
GB1183006A GB1657568A GB1657568A GB1183006A GB 1183006 A GB1183006 A GB 1183006A GB 1657568 A GB1657568 A GB 1657568A GB 1657568 A GB1657568 A GB 1657568A GB 1183006 A GB1183006 A GB 1183006A
Authority
GB
United Kingdom
Prior art keywords
solution
copper
iron
ferric
ferric chloride
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
GB1657568A
Inventor
David Henry Thomas
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1657568A priority Critical patent/GB1183006A/en
Publication of GB1183006A publication Critical patent/GB1183006A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/10—Halides
    • 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
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/46—Regeneration of etching compositions
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/80—Compositional purity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Removal Of Specific Substances (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

1,183,006. Regeneration of ferric chloride. D. H. THOMAS. 20 Jan., 1969 [5 April, 1968], No. 16575/68. Heading C1A. An exhausted ferric chloride etchant solution is regenerated by displacing the copper from the solution, restoring the pH of the solution to the desired level by adding concentrated hydrochloric acid, oxidizing the ferrous iron in the solution to ferric iron by adding an oxidizing agent and adjusting the ferric iron content of the solution by adding ferric chloride or water. Preferably, the copper is displaced by contacting the solution with a sufficient amount (e.g. enough to react with the copper in solution), but not a substantial excess of metallic iron. The preferred oxidizing agent is gaseous chlorine.
GB1657568A 1968-04-05 1968-04-05 Regeneration of Etchant. Expired GB1183006A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1657568A GB1183006A (en) 1968-04-05 1968-04-05 Regeneration of Etchant.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1657568A GB1183006A (en) 1968-04-05 1968-04-05 Regeneration of Etchant.

Publications (1)

Publication Number Publication Date
GB1183006A true GB1183006A (en) 1970-03-04

Family

ID=10079783

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1657568A Expired GB1183006A (en) 1968-04-05 1968-04-05 Regeneration of Etchant.

Country Status (1)

Country Link
GB (1) GB1183006A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991011544A1 (en) * 1990-01-30 1991-08-08 Uzhgorodsky Gosudarstvenny Universitet Method and device for regeneration of iron chloride solution for pickling of copper
US20140348730A1 (en) * 2013-05-22 2014-11-27 Tessenderlo Chemie NV Hydrogen chloride removal process
CN110218878A (en) * 2019-07-01 2019-09-10 陕西安信显像管循环处理应用有限公司 A kind of method of acidic etching liquid displacement production frerrous chloride

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991011544A1 (en) * 1990-01-30 1991-08-08 Uzhgorodsky Gosudarstvenny Universitet Method and device for regeneration of iron chloride solution for pickling of copper
US20140348730A1 (en) * 2013-05-22 2014-11-27 Tessenderlo Chemie NV Hydrogen chloride removal process
EP2805920A3 (en) * 2013-05-22 2014-12-10 Tessenderlo Chemie NV Continuous Fe(III) production at atmospheric pressures
US9315393B2 (en) * 2013-05-22 2016-04-19 Tessenderlo Chemie NV Hydrogen chloride removal process
US9376329B2 (en) 2013-05-22 2016-06-28 Tessenderlo Chemie NV Continuous Fe(III) production at atmospheric pressures
CN110218878A (en) * 2019-07-01 2019-09-10 陕西安信显像管循环处理应用有限公司 A kind of method of acidic etching liquid displacement production frerrous chloride

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee