Method of providing a polycarbonate article with a uniform...

Details Method of providing a polycarbonate article with a uniform... Method of providing a polycarbonate article with a uniform...

B - Operations, Transporting

32

B

117/143

B32B 27/08 (2006.01) B05D 7/02 (2006.01) B29D 11/00 (2006.01) C08J 7/04 (2006.01)

Patent

CA 1165643

8CS-3030 ABSTRACT OF THE DISCLOSURE A process for providing a protective coating on a polycarbonate substrate comprising (i) applying onto said polycarbonate substrate a priming emulsion composition containing (a) thermosettable acrylic polymer, (b) an ultraviolet light absorber selected from the benzylidene malonates and cyanoacrylates, (c) water, and (d) a hydroxy ether or an alkanol; (ii) curing the thermosettable acrylic polymer thereby forming a primer layer containing a thermoset acrylic and an ultraviolet light screener on said substrate; (iii) applying a top coat composition containing colloidal silica and a further curable organopolysiloxane; and (iv) curing said further curable organopolysiloxane thereby obtaining a silica filled thermoset organopolysiloxane top coat.

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