GB450979A - Improvements in or relating to the electrodeposition of metals - Google Patents

Improvements in or relating to the electrodeposition of metals

Info

Publication number
GB450979A
GB450979A GB2626/35A GB262635A GB450979A GB 450979 A GB450979 A GB 450979A GB 2626/35 A GB2626/35 A GB 2626/35A GB 262635 A GB262635 A GB 262635A GB 450979 A GB450979 A GB 450979A
Authority
GB
United Kingdom
Prior art keywords
alkali metal
acid
soap
bath
cyanide
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
GB2626/35A
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.)
Johnson Matthey PLC
Original Assignee
Johnson Matthey PLC
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 Johnson Matthey PLC filed Critical Johnson Matthey PLC
Priority to GB2626/35A priority Critical patent/GB450979A/en
Publication of GB450979A publication Critical patent/GB450979A/en
Priority to US104149A priority patent/US2113517A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/46—Electroplating: Baths therefor from solutions of silver

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cosmetics (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Detergent Compositions (AREA)

Abstract

450,979. Electroplating. POWELL, A. R., DAVIES, E. C., and JOHNSON, MATTHEY, & CO., Ltd., 78, Hatton Garden, London. Jan. 26, 1935, Nos. 2626 and 2627. [Class 41] A bath for the deposition of hard bright deposits of silver, copper, or other metal contains a double cyanide of the metal and an alkali metal, excess of free cyanide, an organic sulphide such as carbon bisulphide or a mercaptan soluble in the bath, to which is added a colloidal solution of either alkali metal silicate or an alkali metal salt of a soap-forming acid or of a sulphonic acid derived from such an acid or from the corresponding alcohol. The soap-forming acid may be a monobasic saturated or unsaturated carboxylic or hydroxycarboxylic aliphatic acid having not less than eight carbon atoms in the molecule. Suitable additions are waterglass, Castile soap, and Turkey red oil. The free cyanide content may be 1-16 oz. per gallon. The baths are operated at room temperature with current density 1-8 amps. per sq. ft. A solution of carbon bisulphide in the bath liquor or in alkali metal cyanide solution is added from time to time.
GB2626/35A 1935-01-26 1935-01-26 Improvements in or relating to the electrodeposition of metals Expired GB450979A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2626/35A GB450979A (en) 1935-01-26 1935-01-26 Improvements in or relating to the electrodeposition of metals
US104149A US2113517A (en) 1935-01-26 1936-10-05 Electrodeposition of silver

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2626/35A GB450979A (en) 1935-01-26 1935-01-26 Improvements in or relating to the electrodeposition of metals

Publications (1)

Publication Number Publication Date
GB450979A true GB450979A (en) 1936-07-27

Family

ID=9742860

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2626/35A Expired GB450979A (en) 1935-01-26 1935-01-26 Improvements in or relating to the electrodeposition of metals

Country Status (2)

Country Link
US (1) US2113517A (en)
GB (1) GB450979A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735808A (en) * 1955-01-31 1956-02-21 Mirror bright silver plating

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2602776A (en) * 1948-09-07 1952-07-08 Hudson Bay Mining & Smelting Electrolytic method of winning zinc
NL77004C (en) * 1950-09-15
US2803593A (en) * 1953-10-12 1957-08-20 Udylite Res Corp Electroplating of cadmium
US2771380A (en) * 1954-08-02 1956-11-20 Burgess Battery Co Method of plating copper particles with silver
US2801960A (en) * 1956-09-06 1957-08-06 Seegmiller Robert Gold plating process
US3020217A (en) * 1956-10-19 1962-02-06 Sel Rex Precious Metals Inc Mirror bright gold alloy electroplating
US3238112A (en) * 1962-07-03 1966-03-01 Du Pont Electroplating of metals using mercapto-metal complex salts
US4247372A (en) * 1978-08-29 1981-01-27 Learonal, Inc. Silver plating

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735808A (en) * 1955-01-31 1956-02-21 Mirror bright silver plating
US2735809A (en) * 1955-01-31 1956-02-21 Mirror bright silver plating

Also Published As

Publication number Publication date
US2113517A (en) 1938-04-05

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