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GB1320589A - Surface cleaning compositions for copper and copper alloys - Google Patents

Surface cleaning compositions for copper and copper alloys

Info

Publication number
GB1320589A
GB1320589A GB1320589DA GB1320589A GB 1320589 A GB1320589 A GB 1320589A GB 1320589D A GB1320589D A GB 1320589DA GB 1320589 A GB1320589 A GB 1320589A
Authority
GB
United Kingdom
Prior art keywords
composition
copper
feb
hcl
ions
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
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.)
Formica International Ltd
Original Assignee
Formica International 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 Formica International Ltd filed Critical Formica International Ltd
Publication of GB1320589A publication Critical patent/GB1320589A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/10—Other heavy metals
    • C23G1/103—Other heavy metals copper or alloys of copper

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)

Abstract

1320589 Cleaning and tarnish-inhibiting of Cu FORMICA INTERNATIONAL Ltd 3 Feb 1972 [5 Feb 1971] 4039/71 Headings C7E and C7U A tarnish inhibiting cleaning composition used with Cu and its alloys comprises an aqueous solution of sulphamic acid and a compound giving rise to hexavalent Cr ions. The source of Cr ions may be CrO 3 or a chromate or dichromate of alkali metal or ammonium. The composition may also contain (i) a water-miscible organic solvent such as a lower alkoxyethanol, ethylene glycol or diacetone alcohol and/or (2) a non-ionic surfactant, typically polyethylene oxide-based and/or (3) HCl or a soluble carboxylic acid; typical amounts per 100 weight parts of composition are 1-40 NH 2 SO 3 H, 1-20 Cr source, 0À01-10 surfactant, 1-25 organic solvent and 1-10 HCl or carboxylic acid; the composition is applied by immersion or spraying with or without mechanical agitation or abrasion, followed by rinsing and drying.
GB1320589D 1971-02-05 1971-02-05 Surface cleaning compositions for copper and copper alloys Expired GB1320589A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB403971 1971-02-05

Publications (1)

Publication Number Publication Date
GB1320589A true GB1320589A (en) 1973-06-13

Family

ID=9769589

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1320589D Expired GB1320589A (en) 1971-02-05 1971-02-05 Surface cleaning compositions for copper and copper alloys

Country Status (1)

Country Link
GB (1) GB1320589A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2317374A1 (en) * 1975-07-11 1977-02-04 Siemens Ag METHOD FOR IMPROVING THE WELDABILITY OF ELECTRIC PADS WITH PRINTED CIRCUIT
EP0367074A3 (en) * 1988-10-31 1991-06-12 LeaRonal, Inc. Preparing printed circuit boards for electroplating
US5700389A (en) * 1994-08-12 1997-12-23 Mec Co., Ltd. Etching solution for copper or copper alloy
US6270590B1 (en) 1995-08-03 2001-08-07 Europa Metalli S.P.A. Low lead release plumbing components made of copper based alloys containing lead, and a method for obtaining the same
US6461534B2 (en) 1997-11-19 2002-10-08 Europa Metalli S. P. A. Low lead release plumbing components made of copper based alloys containing lead, and a method for obtaining the same

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2317374A1 (en) * 1975-07-11 1977-02-04 Siemens Ag METHOD FOR IMPROVING THE WELDABILITY OF ELECTRIC PADS WITH PRINTED CIRCUIT
EP0367074A3 (en) * 1988-10-31 1991-06-12 LeaRonal, Inc. Preparing printed circuit boards for electroplating
US5700389A (en) * 1994-08-12 1997-12-23 Mec Co., Ltd. Etching solution for copper or copper alloy
US6270590B1 (en) 1995-08-03 2001-08-07 Europa Metalli S.P.A. Low lead release plumbing components made of copper based alloys containing lead, and a method for obtaining the same
US6461534B2 (en) 1997-11-19 2002-10-08 Europa Metalli S. P. A. Low lead release plumbing components made of copper based alloys containing lead, and a method for obtaining the same
US6770215B2 (en) 1997-11-19 2004-08-03 Europa Metalli S.P.A. Low lead release plumbing components made of copper based alloys containing lead, and a method for obtaining the same

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees