Invention Grant
- Patent Title: Copper-tin electrolyte and method for depositing bronze layers
- Patent Title (中): 铜锡电解质和沉积青铜层的方法
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Application No.: US12526727Application Date: 2008-01-24
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Publication No.: US08211285B2Publication Date: 2012-07-03
- Inventor: Klaus Bronder , Bernd Weyhmueller , Frank Oberst , Sascha Berger , Michael Lauster
- Applicant: Klaus Bronder , Bernd Weyhmueller , Frank Oberst , Sascha Berger , Michael Lauster
- Applicant Address: DE Schwaebisch Gmuend
- Assignee: Umicore Galvanotechnik GmbH
- Current Assignee: Umicore Galvanotechnik GmbH
- Current Assignee Address: DE Schwaebisch Gmuend
- Agency: Smith, Gambrell & Russell, LLP
- Priority: EP07003097 20070214
- International Application: PCT/EP2008/000534 WO 20080124
- International Announcement: WO2008/098666 WO 20080821
- Main IPC: C25D3/58
- IPC: C25D3/58

Abstract:
Consumer goods and industrial articles are electro-plated with bronze layers for decorative reasons and to protect them against corrosion. The electrolytes used hitherto for producing decorative bronze layers are either cyanide-containing or, as in the case of baths based on organosulphonic acids, highly corrosive or have, as in the case of cyanide-free baths based on diphosphoric acid, unsatisfactory long-term stabilities. Electrolytes which are used for applying solderable bronze layers in the electronics industry usually contain toxic or very toxic thio compounds. The present invention provides a non-toxic electrolyte which displays long-term stability for the electrolytic deposition of decorative bronze layers and a corresponding process for the application of such decorative bronze layers to consumer goods and industrial articles.
Public/Granted literature
- US20100147696A1 COPPER-TIN ELECTROLYTE AND METHOD FOR DEPOSITING BRONZE LAYERS Public/Granted day:2010-06-17
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