Method of providing a polycarbonate article with a uniform and d

Details Method of providing a polycarbonate article with a uniform and d Method of providing a polycarbonate article with a uniform and d

1979-04-18

1980-12-30

Lesmes, George F.

Coating processes

With post-treatment of coating or coating material

Heating or drying

4274121, 428412, 428447, A23F 300, B32B 2736

Patent

active

042423830

ABSTRACT:
A process for providing a protective coating on a polycarbonate substrate comprising (i) applying onto said polycarbonate substrate a priming emulsion composition containing (a) a thermosettable acrylic polymer, (b) an ultraviolet light absorber selected from the benzylidene malonates and cyanoacrylates, (c) water, and (d) a hydroxy ether or a lower 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 a further curable organopolysiloxane; and (iv) curing said further curable organopolysiloxane thereby obtaining a thermoset organopolysiloxane top coat.

REFERENCES:
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patent: 4135007 (1979-01-01), Lorenz et al.
patent: 4156046 (1979-05-01), Lien et al.
patent: 4188451 (1980-02-01), Humphrey, Jr.

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