GB1085747A - A process for the etching of copper - Google Patents

A process for the etching of copper

Info

Publication number
GB1085747A
GB1085747A GB1734766A GB1734766A GB1085747A GB 1085747 A GB1085747 A GB 1085747A GB 1734766 A GB1734766 A GB 1734766A GB 1734766 A GB1734766 A GB 1734766A GB 1085747 A GB1085747 A GB 1085747A
Authority
GB
United Kingdom
Prior art keywords
ammonium
etching
copper
april
heading
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
GB1734766A
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
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 Degussa GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Publication of GB1085747A publication Critical patent/GB1085747A/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
    • C23F1/00—Etching metallic material by chemical means
    • C23F1/10—Etching compositions
    • C23F1/14—Aqueous compositions
    • C23F1/32—Alkaline compositions
    • C23F1/34—Alkaline compositions for etching copper or alloys thereof

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)
  • ing And Chemical Polishing (AREA)
  • Manufacturing Of Printed Circuit Boards (AREA)

Abstract

1,085,747. Etching. DEUTSCHE GOLD UND SILBER SCHEIDEANSTALT April 20, 1966 [April 24, 1965], No. 17347/66. Heading B6J. Copper is etched in a bath including aqueous sodium chlorite solutions together with ammonia or ammonium salts such as ammonium carbonate, ammonium sulphate or ammonium phosphate, the pH value being between 8 and 11.
GB1734766A 1965-04-24 1966-04-20 A process for the etching of copper Expired GB1085747A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED0047114 1965-04-24

Publications (1)

Publication Number Publication Date
GB1085747A true GB1085747A (en) 1967-10-04

Family

ID=7050208

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1734766A Expired GB1085747A (en) 1965-04-24 1966-04-20 A process for the etching of copper

Country Status (1)

Country Link
GB (1) GB1085747A (en)

Also Published As

Publication number Publication date
DE1521723B1 (en) 1970-07-02

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