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Title:
METHOD OF POWDER COATING WELDABLE SUBSTRATES
Document Type and Number:
WIPO Patent Application WO2004067190
Kind Code:
A3
Abstract:
The method of the present invention includes the steps of (a) optionally, applying a pretreatment composition to the substrate; (b) optionally, applying a conductive, weldable coating composition to the substrate; (c) optionally, coalescing the conductive, weldable coating composition to form a substantially continuous conductive coating; (d) applying a rinse composition to the substrate, the rinse composition including a surface energy modifying compound; (e) applying a powder coating composition to the rinse composition; (f) heating the powder coating composition to melt and level the powder coating composition to form a substantially continuous powder coating; (g) optionally, applying a clear coating composition over the powder coating; and (h) heating the substrate to coalesce and, optionally, crosslink the coating.

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Inventors:
ROELOFS ROBERT R
LETZRING HANS F
Application Number:
PCT/US2004/002426
Publication Date:
December 23, 2004
Filing Date:
January 29, 2004
Export Citation:
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Assignee:
PPG IND OHIO INC (US)
International Classes:
B05D7/00; B05D7/14; B05D7/16; C09D167/00; B05D3/10; C08K5/20; (IPC1-7): B05D7/14; B05D7/00
Domestic Patent References:
WO2003011986A12003-02-13
WO2003053599A12003-07-03
Foreign References:
FR2713518A11995-06-16
GB1414484A1975-11-19
US20020182418A12002-12-05
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