GB867573A - Dissolution of copper - Google Patents

Dissolution of copper

Info

Publication number
GB867573A
GB867573A GB32313/57A GB3231357A GB867573A GB 867573 A GB867573 A GB 867573A GB 32313/57 A GB32313/57 A GB 32313/57A GB 3231357 A GB3231357 A GB 3231357A GB 867573 A GB867573 A GB 867573A
Authority
GB
United Kingdom
Prior art keywords
copper
solution
persulphate
mixture
dissolution
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
GB32313/57A
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.)
FMC Corp
Original Assignee
FMC Corp
Food Machinery and Chemical Corp
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 FMC Corp, Food Machinery and Chemical Corp filed Critical FMC Corp
Publication of GB867573A publication Critical patent/GB867573A/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
    • C01G3/00—Compounds of copper
    • C01G3/10—Sulfates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • ing And Chemical Polishing (AREA)

Abstract

Copper is dissolved in a solution containing in solution p 10-50% wt. of a persulphate or mixture of persulphates and 1-100 p.p.m. of one or more of the metals Ag, Au, Bi, Hg, Pb, Pd, Pt and Rh. The mixture may be heated, preferably from 100 DEG F. to a temperature below boiling point. Specified solutions include HgCl2, AgNO3, HAuCl2, (NH4)4PtCl6 and rhodium sulphate. The persulphate may be ammonium and/or sodium persulphate. The dissolution may take place by immersing a metal body in the agitated solution or by spraying or brushing the solution on to the metal: the process may be used where it is desired to remove copper from objects where machining is not practicable and for the removal of copper from the unmasked portions of suitably masked copper sheets in the production of fine screens, printed circuits or copper printing plates.
GB32313/57A 1957-01-11 1957-10-16 Dissolution of copper Expired GB867573A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US867573XA 1957-01-11 1957-01-11

Publications (1)

Publication Number Publication Date
GB867573A true GB867573A (en) 1961-05-10

Family

ID=22200705

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32313/57A Expired GB867573A (en) 1957-01-11 1957-10-16 Dissolution of copper

Country Status (1)

Country Link
GB (1) GB867573A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3140203A (en) * 1961-04-24 1964-07-07 Macdermid Inc Method of and composition for treating aluminum and aluminum alloys
US3193423A (en) * 1962-09-25 1965-07-06 Goffredo Daniel Louis Etching printing plates
US4158593A (en) 1977-11-08 1979-06-19 Dart Industries Inc. Dissolution of metals utilizing a H2 O2 -sulfuric acid solution catalyzed with selenium compounds

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3140203A (en) * 1961-04-24 1964-07-07 Macdermid Inc Method of and composition for treating aluminum and aluminum alloys
US3193423A (en) * 1962-09-25 1965-07-06 Goffredo Daniel Louis Etching printing plates
US4158593A (en) 1977-11-08 1979-06-19 Dart Industries Inc. Dissolution of metals utilizing a H2 O2 -sulfuric acid solution catalyzed with selenium compounds

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