Method for coating a polycarbonate article with silica...

Details Method for coating a polycarbonate article with silica... Method for coating a polycarbonate article with silica...

B - Operations, Transporting

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B05D 1/38 (2006.01) B05D 3/02 (2006.01) B05D 7/04 (2006.01) C08J 7/04 (2006.01) C09D 183/04 (2006.01)

Patent

CA 1111722

ABSTRACT OF THE DISCLOSURE A process for providing a durable and tenaciously adhered scratch, mar, abrasion, and chemical solvent resistant colloidal silica filled organopolysiloxane coating on a polycarbonate substrate. The process includes (i) applying a priming composition comprised of an emulsion of a thermosettable acrylic polymer and a hydroxy ether to a polycarbonate substrate; (ii) curing the thermosettable acrylic polymer thereby forming a primer layer on said substrate; (iii) applying onto the primed substrate a top coat composition containing a colloidal silica filled further curable organopoly- siloxane; and, (iv) curing the silica filled organo- polysiloxane.

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