US3546081A - Nickel electroplating electrolyte - Google Patents

Nickel electroplating electrolyte Download PDF

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Publication number
US3546081A
US3546081A US776240A US3546081DA US3546081A US 3546081 A US3546081 A US 3546081A US 776240 A US776240 A US 776240A US 3546081D A US3546081D A US 3546081DA US 3546081 A US3546081 A US 3546081A
Authority
US
United States
Prior art keywords
nickel
acid
sodium
hydrochloride
benzene
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 - Lifetime
Application number
US776240A
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English (en)
Inventor
Malcolm J Law
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.)
MANGRA Ltd 24 WADSWORTH ROAD PERIVALE MIDDLESEX UR6 7JD
Permalite Chemicals Ltd
Original Assignee
Permalite Chemicals Ltd
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 Permalite Chemicals Ltd filed Critical Permalite Chemicals Ltd
Application granted granted Critical
Publication of US3546081A publication Critical patent/US3546081A/en
Assigned to MANGRA LIMITED, 24 WADSWORTH ROAD, PERIVALE, MIDDLESEX UR6 7JD reassignment MANGRA LIMITED, 24 WADSWORTH ROAD, PERIVALE, MIDDLESEX UR6 7JD ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: PERMALITE CHEMICALS LIMITED
Assigned to PERMALITE CHEMICALS LIMITED reassignment PERMALITE CHEMICALS LIMITED CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: MANGRA LIMITED
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • C25D3/12—Electroplating: Baths therefor from solutions of nickel or cobalt
    • C25D3/14—Electroplating: Baths therefor from solutions of nickel or cobalt from baths containing acetylenic or heterocyclic compounds
    • C25D3/16—Acetylenic compounds

Definitions

  • This invention relates to bright nickel plating.
  • the main object of the present invention is to provide ,a method of obtaining a reliable bright nickel coating.
  • A' further "object is to obtain a nickel coating which is ductile insteadof being brittle as are many bright nickel coatings.
  • Further objects of the invention are to reduce stress cracking of the coating and to achieve levelling, i.e. smooth coatings when the base surface is uneven.
  • a method of bright nickel coating comprises adding dimethylaminopropync hydrochloride to the bath.
  • this substance is used in the range of at least 0.005 but less than 0.2 gram per litre.
  • the bath comprises an aqueous solution for use in bright nickel electroplating which contains (a) a sulpho-oxygen compound selected from mononuclear aromatic sulphonic, sulphinic acids and binuclear aromatic sulphonic acids, heterosulphonic acids, alkali metal, ammonium magnesium and nickel salts of said acids, (b) at least one nickel salt, (c) boric acid and (d) dimethylaminopropyne hydrochloride.
  • a sulpho-oxygen compound selected from mononuclear aromatic sulphonic, sulphinic acids and binuclear aromatic sulphonic acids, heterosulphonic acids, alkali metal, ammonium magnesium and nickel salts of said acids, (b) at least one nickel salt, (c) boric acid and (d) dimethylaminopropyne hydrochloride.
  • the sulpho-oxygen compounds are particularly useful in stress relief of the coatings.
  • H CH CHSO Na (sodium phenylethylene sulphonate) C H (SO H) (meta-benzene disulphonic acid) C H (SO Na) (sodium meta-benzene disulphonate) C H (SO Ni (nickel meta-benzene disulphonate) HOCOC H SO NH (ortho-sulphobenzoic acid monoammonium salt) H N%)H (SO H) (1-amino-2,5 benzene disulphonic ac1 H NC H SO H (ortho-aminobe'nzene sulphonic acid) (2) Mononuclear aromatic sulphinic acids, and alkali metal, ammonium, magnesium and nickel salts thereof.
  • the pH of the baths may be 3 to 5, e.g. 3.6.
  • the dimethyl amino propyne hydrochloride must be made before it is introduced into the bath solution or bath solution additive mixture. The same results are not obtainable merely by adding the propyne together with some hydrochloric solution to the bath or additive mixture.
  • the hydrochloride is made by known methods, e.g. as follows:
  • the water content of the dimethylaminopropyne used for producing the hydrochloride is determined by the Karl Fischer method.
  • the acid content of the hydrochloride acid is also determined.
  • the quantity of 'water used depends on these two values.
  • An acidic aqueous solution for use in bright nickel electroplating which includes nickel ions and at least .005 but not exceeding 0.2 gram per litre of the solution of dimethylaminopropyne hydrochloride.
  • An acidic aqueous solution for use in bright nickel electro-plating which contains (a) from 5 to grams per litre of a sulpho-oxygen compound selected :from the group consisting of mononuclear aromatic sulphonic acids, binuclear aromatic sulphonic acids, and heterocyclic sulphonic acids, and alkali metal, ammonium, magnesium, and nickel salts of said acids; (b) at least one nickel salt selected from the group consisting of nickel sulphate, nickel chloride, nickel formate, nickel fluoborate, and nickel sulphamate; (c) boric acid; and (d) from 0.005 to 0.2 gram per litre of dimethylaminopropyne hydrochloride.
  • a sulpho-oxygen compound selected :from the group consisting of mononuclear aromatic sulphonic acids, binuclear aromatic sulphonic acids, and heterocyclic sulphonic acids, and alkali metal, ammonium, magnesium, and nickel salts of

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
US776240A 1964-01-14 1968-11-15 Nickel electroplating electrolyte Expired - Lifetime US3546081A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1606/64A GB1026987A (en) 1964-01-14 1964-01-14 Nickel plating process
GB50192/66A GB1143257A (en) 1964-01-14 1966-11-09 Improvements in or relating to nickel electroplating solutions

Publications (1)

Publication Number Publication Date
US3546081A true US3546081A (en) 1970-12-08

Family

ID=26236856

Family Applications (1)

Application Number Title Priority Date Filing Date
US776240A Expired - Lifetime US3546081A (en) 1964-01-14 1968-11-15 Nickel electroplating electrolyte

Country Status (7)

Country Link
US (1) US3546081A (de)
AT (1) AT277695B (de)
BE (1) BE706165A (de)
DE (2) DE1496955B2 (de)
FR (1) FR1424042A (de)
GB (2) GB1026987A (de)
NL (2) NL6500351A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969198A (en) * 1975-01-09 1976-07-13 Permalite Chemicals Ltd. Ni-Fe electro-plating
US4054495A (en) * 1975-03-27 1977-10-18 Permalite Chemicals Limited Electrodeposition of nickel

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB858718A (en) * 1957-04-12 1961-01-11 Schering Ag Improvements in and relating to the electro-deposition of nickel coatings
US3002904A (en) * 1958-09-26 1961-10-03 Hanson Van Winkle Munning Co Electrodeposition of nickel
US3006822A (en) * 1957-05-08 1961-10-31 Langbein Pfanhauser Werke Ag Electro-deposition of nickel coatings

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB858718A (en) * 1957-04-12 1961-01-11 Schering Ag Improvements in and relating to the electro-deposition of nickel coatings
US3006822A (en) * 1957-05-08 1961-10-31 Langbein Pfanhauser Werke Ag Electro-deposition of nickel coatings
US3002904A (en) * 1958-09-26 1961-10-03 Hanson Van Winkle Munning Co Electrodeposition of nickel

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3969198A (en) * 1975-01-09 1976-07-13 Permalite Chemicals Ltd. Ni-Fe electro-plating
US4054495A (en) * 1975-03-27 1977-10-18 Permalite Chemicals Limited Electrodeposition of nickel

Also Published As

Publication number Publication date
FR1424042A (fr) 1966-01-07
GB1026987A (en) 1966-04-20
NL6500351A (de) 1965-07-15
NL6714781A (de) 1968-05-10
GB1143257A (en) 1969-02-19
DE1496955A1 (de) 1970-10-08
DE1496955B2 (de) 1970-10-08
DE1621146A1 (de) 1971-04-29
AT277695B (de) 1970-01-12
BE706165A (de) 1968-03-18

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Legal Events

Date Code Title Description
AS Assignment

Owner name: PERMALITE CHEMICALS LIMITED

Free format text: CHANGE OF NAME;ASSIGNOR:MANGRA LIMITED;REEL/FRAME:004260/0899

Effective date: 19840514

Owner name: MANGRA LIMITED, 24 WADSWORTH ROAD, PERIVALE, MIDDL

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:PERMALITE CHEMICALS LIMITED;REEL/FRAME:004260/0894

Effective date: 19840514