Process for forming a two-coat electrodeposited composite coating the composite coating and chip resistant electrodeposited coating composition

US6248225A · kind A · utility

Assignee

• PPG Industries Ohio, Inc. · US

Inventors

• Thomas Palaika · Springdale Township, US
• Ellor James Van Buskirk · Wexford, US
• Victor G. Corrigan · North Olmsted, US
• Venkatachalam Eswarakrishnan · Allison Park, US
• Gregory J. McCollum · Allison Park, US
• Robert R. Zwack · New Kensington, US
• Philippe Faucher · Paris, FR
• Craig A. Wilson · Washington, US
• Chester J. Szymanski · Washington, US
• James E. Poole · Gibsonia, US
• Keith S. Ritter · Washington, US
• Richard F. Syput · Lower Burrell, US

Key dates

• Filing date: May 11, 1999
• Grant date: Jun 19, 2001
• Expiry date: May 11, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S524/901
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for applying two electrodeposited coatings, one on top of the other, to an electrically conductive substrate is provided. An electrically conductive first coating is applied to provide for corrosion resistance and a second polyurethane-based coating is applied to the first coating to provide chip resistance. Also, aqueous dispersions of the polyurethane coating compositions are disclosed.