US3723263A - Composition of baths for electrodeposition of bright zinc from aqueous, acid, electroplating baths - Google Patents

Composition of baths for electrodeposition of bright zinc from aqueous, acid, electroplating baths Download PDF

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Publication number
US3723263A
US3723263A US00229590A US3723263DA US3723263A US 3723263 A US3723263 A US 3723263A US 00229590 A US00229590 A US 00229590A US 3723263D A US3723263D A US 3723263DA US 3723263 A US3723263 A US 3723263A
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US
United States
Prior art keywords
zinc
baths
acid
aqueous
gms
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
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US00229590A
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English (en)
Inventor
W Rosenberg
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.)
Hull R & Co Inc
Hull R & Co Inc us
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Hull R & Co Inc
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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
    • C25D3/22—Electroplating: Baths therefor from solutions of zinc

Definitions

  • This invention pertains to improvements in the electrodeposition of bright zinc from aqueous acid plating baths.
  • Acid zinc electroplating baths are not new in the plating field and have, in fact, been used with moderate success for quite some time. Prior to this invention, however, certain limitations have in many instances rendered the existing acid zinc plating bath compositions extremely impractical to use and quite often not applicable at all.
  • Another problem that has been common has been the lack of ductility in the zinc plate obtained from existing acid zinc bath compositions. Many parts are bent or shaped after plating either through manufacturing processes or through normal use. If the electrodeposit is not reasonably ductile, chipping, flaking and peeling of the plate can occur, thus causing rejection of the part.
  • This invention comprises an aqueous, acid electroplating bath, for producing a bright, lustrous electrodeposit of zinc containing zinc ions and chloride ions, and dissolved therein, naphthol polyoxyalkylate having the formula:
  • R is hydrogen or methyl, and x is about 8 to 20.
  • polyethylenimine having the formula:
  • R is hydrogen, methyl, ethyl, propyl, hydroxyethyl, Z-hydroxypropyl, 3-hydroxypropyl, 2- aminoethyl, 2-aminopropyl, or 3-aminopropyl, and y is about 10 to 20.
  • the present invention is also an addition agent for an acid zinc electroplating bath consisting of from about 1:100 to :1 parts by weight of naphthol polyoxyalkylate and polyethylenimine of the above formulas.
  • a general purpose bath was made up which contained 30 gms. ZnCl /liter and 200 gms. NH,Cl/liter at a pH of 4.9.
  • the current density area from 0 to about 50 amps per sq. ft. is left as a dark, rough electrodeposit with no trace of brightness.
  • the naphthol polyoxyalkylate and the polyethylenimine act synergistically to provide a bright, lustrous electrodeposit from about 12 amps per sq. ft. to well over 200 amps per sq. ft. In addition to being extremely bright, the deposit is quite ductile.
  • the current densities below 12 amps per sq. ft. can be made bright by the addition of between 0.01 and 10 gms. per liter of a substance selected from the group consisting of anisaldehyde, piperonal, veratraldehyde, benzaldehyde, vanillan, benzylidene acetone, and cinnamic aldehyde.
  • An aqueous, acid electroplating bath for producing a bright, lustrous electrodeposit of zinc containing zinc ions, and chloride ions and dissolved therein naphthol polyoxyalkylate having the formula:
  • R is hydrogen or methyl
  • x is about 8 to 20 and polyethylenimine having the formula:
  • R is hydrogen, methyl, ethyl, propyl, hydroxyethyl, 2 hydroxy propyl, 3-hydroxy propyl, 2- aminoethyl, 2-aminopropyl, or 3-aminopropyl, and y is about 10 to about 20.

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  • 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)
US00229590A 1972-02-25 1972-02-25 Composition of baths for electrodeposition of bright zinc from aqueous, acid, electroplating baths Expired - Lifetime US3723263A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US22959072A 1972-02-25 1972-02-25

Publications (1)

Publication Number Publication Date
US3723263A true US3723263A (en) 1973-03-27

Family

ID=22861879

Family Applications (1)

Application Number Title Priority Date Filing Date
US00229590A Expired - Lifetime US3723263A (en) 1972-02-25 1972-02-25 Composition of baths for electrodeposition of bright zinc from aqueous, acid, electroplating baths

Country Status (7)

Country Link
US (1) US3723263A (sv)
JP (1) JPS5317980B2 (sv)
AU (1) AU458551B2 (sv)
BR (1) BR7301360D0 (sv)
ES (1) ES410631A1 (sv)
FR (1) FR2172969B1 (sv)
SE (1) SE386462B (sv)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4089755A (en) * 1977-07-11 1978-05-16 The Richardson Company Acid bright zinc plating
US4101387A (en) * 1974-04-22 1978-07-18 Oxy Metal Industries Corporation Composition for electrodeposition of metal deposits, its method of preparation and uses thereof
US4162947A (en) * 1978-05-22 1979-07-31 R. O. Hull & Company, Inc. Acid zinc plating baths and methods for electrodepositing bright zinc deposits
FR2422735A1 (fr) * 1978-01-16 1979-11-09 Oxy Metal Industries Corp Procede de revetement electrolytique de zinc et bains acides ou sensiblement neutres, sans cyanure, utilises dans ce but
US4444630A (en) * 1977-07-11 1984-04-24 Richardson Chemical Company Acid bright zinc plating
US4765871A (en) * 1981-12-28 1988-08-23 The Boeing Company Zinc-nickel electroplated article and method for producing the same

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5826004Y2 (ja) * 1980-02-12 1983-06-04 関西電力株式会社 流水中スクリ−ンの異物排出装置
JPS583607A (ja) * 1981-06-26 1983-01-10 Tapuroge Japan Kk 逆洗機構付きフイルタ
DE3246718C1 (de) * 1982-12-17 1984-05-24 Taprogge GmbH, 4000 Düsseldorf Einrichtung fuer die mechanische Reinigung eines Kuehlwasserstromes von Kraftwerkskondensatoren

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2355070A (en) * 1937-07-03 1944-08-08 Little Inc A Electrolytic deposition of metal
US2384300A (en) * 1937-07-03 1945-09-04 Little Inc A Electrolytic deposition of zinc
US2853444A (en) * 1955-10-18 1958-09-23 Dow Chemical Co Electrowinning of metals
US3393135A (en) * 1965-08-05 1968-07-16 Enthone Bright zinc electro-plating
US3565800A (en) * 1969-02-04 1971-02-23 Ventron Corp Ionic compositions containing hg(ii),zn(ii),cd(ii),ag(i),cu(ii),ni(ii) and/or co(ii),and a polymer of an ethylene imine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2355070A (en) * 1937-07-03 1944-08-08 Little Inc A Electrolytic deposition of metal
US2384300A (en) * 1937-07-03 1945-09-04 Little Inc A Electrolytic deposition of zinc
US2853444A (en) * 1955-10-18 1958-09-23 Dow Chemical Co Electrowinning of metals
US3393135A (en) * 1965-08-05 1968-07-16 Enthone Bright zinc electro-plating
US3565800A (en) * 1969-02-04 1971-02-23 Ventron Corp Ionic compositions containing hg(ii),zn(ii),cd(ii),ag(i),cu(ii),ni(ii) and/or co(ii),and a polymer of an ethylene imine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4101387A (en) * 1974-04-22 1978-07-18 Oxy Metal Industries Corporation Composition for electrodeposition of metal deposits, its method of preparation and uses thereof
US4089755A (en) * 1977-07-11 1978-05-16 The Richardson Company Acid bright zinc plating
US4444630A (en) * 1977-07-11 1984-04-24 Richardson Chemical Company Acid bright zinc plating
FR2422735A1 (fr) * 1978-01-16 1979-11-09 Oxy Metal Industries Corp Procede de revetement electrolytique de zinc et bains acides ou sensiblement neutres, sans cyanure, utilises dans ce but
US4162947A (en) * 1978-05-22 1979-07-31 R. O. Hull & Company, Inc. Acid zinc plating baths and methods for electrodepositing bright zinc deposits
FR2426749A1 (fr) * 1978-05-22 1979-12-21 Hull & Co R O Bains de zingage acides et procedes pour l'electrodeposition de depots de zinc brillants
US4765871A (en) * 1981-12-28 1988-08-23 The Boeing Company Zinc-nickel electroplated article and method for producing the same

Also Published As

Publication number Publication date
DE2300374A1 (de) 1973-09-06
AU5055672A (en) 1974-07-04
ES410631A1 (es) 1976-01-01
DE2300374B2 (de) 1976-04-08
FR2172969A1 (sv) 1973-10-05
JPS5317980B2 (sv) 1978-06-12
BR7301360D0 (pt) 1974-05-16
SE386462B (sv) 1976-08-09
FR2172969B1 (sv) 1975-03-28
JPS4899042A (sv) 1973-12-15
AU458551B2 (en) 1975-02-06

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