Electroconductive composite substrates coated with electrodepositable coating compositions and methods of preparing them
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United States of America Patent
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May 15, 2018
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app pub date -
Jul 12, 2013
filing date -
Jul 12, 2013
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Abstract
The present invention is directed to a coated substrate comprising:
- A) an electroconductive composite substrate comprising a resinous matrix reinforced with fibers, andB) a cured coating layer electrophoretically deposited on at least at least a portion of a surface of the substrate, wherein the cured coating layer is deposited from a curable, electrodepositable coating composition comprising: (1) a resin component containing an active hydrogen-containing, cationic or anionic resin comprising an acrylic, polyester, polyurethane and/or polyepoxide polymer; and(2) a curing agent. The present invention is further directed to a process for coating a plastic, electroconductive substrate comprising electrophoretically depositing on the substrate the curable, electrodepositable coating composition described above, and heating the coated substrate to a temperature less than 250° F. for a time sufficient to cure the electrodeposited coating on the substrate.
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