Title:
PROCESSES FOR ELECTROCOATING AND ARTICLES MADE THEREFROM
Document Type and Number:
WIPO Patent Application WO2004046425
Kind Code:
A3
Abstract:
The disclosure relates to a process for applying a multilayer protective coating to a substrate having an electrically conductive surface, comprising: (a) a first method of forming a silicate layer upon said electrically conductive surface, said first method comprising contacting at least a portion of said surface with a first medium comprising at least one silicate and having a basic pH and wherein said first medium is substantially free of chromates, to form a silicate layer, and (b) a second method of electrolytically applying a synthetic resin layer upon the surface of said silicate layer, said second method comprising contacting at least a portion of said surface of said silicate layer with a second medium comprising a resinous ingredient, applying an electric current to said second medium wherein said surface is employed as an electrode, to form a synthetic resin layer. The multilayer protective coating exhibits excellent corrosion and adhesion properties and is environmentally acceptable.
Inventors:
KLOS KLAUS-PETER
GROLMES HOLGER MANFRED
GROLMES HOLGER MANFRED
Application Number:
PCT/US2003/036523
Publication Date:
November 18, 2004
Filing Date:
November 14, 2003
Export Citation:
Assignee:
ELISHA HOLDING LLC (US)
International Classes:
B32B15/04; B32B15/08; C09D5/44; C25B7/00; C25D9/08; C25D13/20; (IPC1-7): C25D13/20; C25D9/04
Foreign References:
| DE19500362A1 | 1996-07-11 | |||
| US3988231A | 1976-10-26 | |||
| GB1473161A | 1977-05-11 | |||
| US3960676A | 1976-06-01 | |||
| EP0670378A1 | 1995-09-06 |
Other References:
PATENT ABSTRACTS OF JAPAN vol. 018, no. 257 (C - 1200) 17 May 1994 (1994-05-17)
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