GB1056374A - Improvements in or relating to electroplating - Google Patents

Improvements in or relating to electroplating

Info

Publication number
GB1056374A
GB1056374A GB10144/65A GB1014465A GB1056374A GB 1056374 A GB1056374 A GB 1056374A GB 10144/65 A GB10144/65 A GB 10144/65A GB 1014465 A GB1014465 A GB 1014465A GB 1056374 A GB1056374 A GB 1056374A
Authority
GB
United Kingdom
Prior art keywords
wax
melting point
weight
current density
parts
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
GB10144/65A
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.)
M&T Chemicals Inc
Original Assignee
M&T Chemicals Inc
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 M&T Chemicals Inc filed Critical M&T Chemicals Inc
Publication of GB1056374A publication Critical patent/GB1056374A/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
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/02—Electroplating of selected surface areas
    • C25D5/022—Electroplating of selected surface areas using masking means

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Lubricants (AREA)

Abstract

A coating solution for protecting areas of low current density of a workpiece during electroplating comprises an inert organic solvent, e.g. an aromatic hydrocarbon solvent or chlorinated hydrocarbon solvent having a boiling point of 45-150 DEG C.; a chlorinated naphthalene wax having a melting point of at least 100 DEG C., e.g. having a melting point of 120-140 DEG C. and a chlorine content of 55-65 wt. per cent and a microcrystalline wax having a melting point of at least 75 DEG C., e.g. having a melting point of 75-90 DEG C. and a needle penetration of 7-25; the wax being present in a proportion of at least 5 parts by weight per 100 parts by weight of organic solvent, e.g. 100 parts by weight organic solvent may contain 2-20 parts by weight chlorinated naphthalene wax and 3-20 parts by weight microcrystalline wax.ALSO:A process for protecting low current density areas of a cathode having areas of high current density whereon metal plating is required, comprises applying to said predetermined areas of low current density a solution comprising an inert organic solvent, chlorinated naphthalene wax having a melting point of at least 100 DEG C., and a microcrystalline (e.g. waxes having an average molecular weight of about 490-800) wax having a melting point of at least 75 DEG C., and evaporating said solvent, thereby forming on said areas of low current density a wax film having a thickness of about 2.5-50 microns. The metal subsequently deposited on the workpiece may be chromium.
GB10144/65A 1964-03-11 1965-03-10 Improvements in or relating to electroplating Expired GB1056374A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US351240A US3390060A (en) 1964-03-11 1964-03-11 Wax stopoff composition and process

Publications (1)

Publication Number Publication Date
GB1056374A true GB1056374A (en) 1967-01-25

Family

ID=23380165

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10144/65A Expired GB1056374A (en) 1964-03-11 1965-03-10 Improvements in or relating to electroplating

Country Status (8)

Country Link
US (1) US3390060A (en)
CH (1) CH463905A (en)
DE (1) DE1260263B (en)
ES (1) ES310349A1 (en)
FR (1) FR1430526A (en)
GB (1) GB1056374A (en)
NL (1) NL6503048A (en)
SE (1) SE309890B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2088117A1 (en) * 1970-05-20 1972-01-07 Comp Generale Electricite Mashing material - for anodising metals
US3769113A (en) * 1971-04-01 1973-10-30 Conrad Schmitt Studios Inc Method of etching glass
US5567482A (en) * 1995-12-20 1996-10-22 Usx Corporation Method of protecting steel strip

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1953904A (en) * 1931-06-17 1934-04-03 Peters Cartridge Company External lubricant for ammunition
US2070918A (en) * 1935-03-11 1937-02-16 Victor Mfg & Gasket Co Coated gasket
GB483307A (en) * 1936-10-14 1938-04-14 Sydney Kerr Smith Improvements in or relating to the preparation of surfaces for electrodeposition
US2185031A (en) * 1937-03-26 1939-12-26 Standard Oil Co Wax composition
US2635093A (en) * 1950-11-13 1953-04-14 Allied Chem & Dye Corp Polymerization of vinylidene fluoride to waxy products
US3084128A (en) * 1959-08-17 1963-04-02 Aluminum Co Of America Coating composition comprising microcrystalline wax, polyisobutylene, polyethylene and a resin, and aluminum foil coated therewith

Also Published As

Publication number Publication date
US3390060A (en) 1968-06-25
CH463905A (en) 1968-10-15
ES310349A1 (en) 1965-12-01
SE309890B (en) 1969-04-08
FR1430526A (en) 1966-03-04
NL6503048A (en) 1965-09-13
DE1260263B (en) 1968-02-01

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