24-12-2020 дата публикации
Номер: US20200399479A1
Автор:
DeDomenic Corey J.,
Donnelly John T.,
JR. Stephen L.,
Milanak,
Moretti Ross A.,
Nguyen Minh An Thi,
Oakes Landon J.,
Okerberg Brian C.,
Puodziukynaite Egle,
Sandala Michael G.,
Sylvester Kevin T.,
Zawacky Steven R.
The present invention is directed towards an electrodepositable coating composition comprising a film-forming binder and electrically conductive particles, wherein the electrically conductive particles are present in an amount of at least 25% by weight, based on the total solids weight of the electrodepositable coating composition. The present invention is also directed towards methods of coating a substrate, coatings, and coated substrates. 1. An electrodepositable coating composition comprising:a film-forming binder; andelectrically conductive particles;wherein the electrically conductive particles are present in an amount of at least 25% by weight, based on the total solids weight of the electrodepositable coating composition.2. The electrodepositable coating composition of claim 1 , wherein the electrically conductive particles comprise zinc claim 1 , aluminum claim 1 , magnesium claim 1 , zinc/aluminum alloy claim 1 , zinc/tin alloy claim 1 , or combinations thereof.3. The electrodepositable coating composition of claim 1 , wherein the metal particle comprises zinc.4. The electrodepositable coating composition of claim 3 , wherein the zinc comprises surface treated zinc.5. The electrodepositable coating composition of claim 4 , wherein the surface treatment comprises a silane.6. The electrodepositable coating composition of claim 1 , wherein the electrically conductive particles comprise aluminum particles claim 1 , and the composition has an aluminum particle to binder weight ratio of at least 3:1.7. The electrodepositable coating composition of claim 1 , wherein the electrically conductive particle comprises zinc particles claim 1 , and the composition has a zinc particle to binder weight ratio of at least 2:1.8. The electrodepositable coating composition of claim 1 , wherein the film-forming binder comprises a cationic salt group-containing claim 1 , film-forming polymer.9. The electrodepositable coating composition of claim 1 , wherein the film-forming ...
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