Invention Application
WO2009045845A2 METHODS FOR COATING A METAL SUBSTRATE AND RELATED COATED METAL SUBSTRATES
审中-公开
涂覆金属基材和相关涂层金属基材的方法
- Patent Title: METHODS FOR COATING A METAL SUBSTRATE AND RELATED COATED METAL SUBSTRATES
- Patent Title (中): 涂覆金属基材和相关涂层金属基材的方法
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Application No.: PCT/US2008/077663Application Date: 2008-09-25
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Publication No.: WO2009045845A2Publication Date: 2009-04-09
- Inventor: MCMILLEN, Mark W. , RAKIEWICZ, Edward F. , KARABIN, Richard F. , MILES, Michelle S.
- Applicant: PPG INDUSTRIES OHIO, INC.
- Applicant Address: 3800 West 143rd Street Cleveland, Ohio 44111 US
- Assignee: PPG INDUSTRIES OHIO, INC.
- Current Assignee: PPG INDUSTRIES OHIO, INC.
- Current Assignee Address: 3800 West 143rd Street Cleveland, Ohio 44111 US
- Agency: PALLADINO, Donald R. et al.
- Priority: US11/863,919 20070928
- Main IPC: C25D3/48
- IPC: C25D3/48 ; C25D3/50 ; C25D7/00
Abstract:
Disclosed are methods for treating metal substrates, including ferrous substrates, such as cold rolled steel and electrogalvanized steel. The methods include depositing an electropositive metal onto at least a portion of the substrate, and then contacting the substrate with a pretreatment composition that is substantially free of crystalline phosphates and chromates. The present invention also relates to coated substrates produced thereby.
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