Title: Method of providing a polycarbonate article with a uniform and durable organopolysiloxane coating

Abstract: A process for providing a uniform, durable and tenaciously adhered scratch, mar, abrasion and chemical solvent resistant organopolysiloxane coating on a polycarbonate substrate. The process includes (i) applying a priming composition comprising an emulsion of a thermosettable acrylic polymer and a hydroxy ether to a polycarbonate substrate; (ii) curing the thermosettable acrylic polymer thereby forming a thermoset acrylic primer layer on said substrate; (iii) applying a top coat composition containing a further curable organopolysiloxane onto said primed substrate; and (iv) curing said further curable organopolysiloxane.

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Other info:

Inventors: Goossens, John C. (Mt. Vernon, IN, US)

Application Number: 959587
Filing Date: 1978-11-13
Publication_date: 1980-04-08
Assignee: General Electric Company (Pittsfield, MA)
Primary Class(es): 427/162 427/163.1, 427/164, 427/379, 427/387
Other Classes:
US Patent Ref:

3582398	Jun, 1971	Ringler	428/412.
3707397	Dec, 1972	Gagnon	428/412.
3968305	Jul, 1976	Oshima et al.	428/412.
3968309	Jul, 1976	Matsuo et al.	428/409.
3978178	Aug, 1976	Oshima et al.	264/25.
3986997	Oct, 1976	Clark	428/412.
4027073	May, 1977	Clark	428/412.
4041120	Aug, 1977	Oshima et al.	264/171.
4045602	Aug, 1977	Sommer et al.	427/387.

Other Refs:
Primary Examiner: Hoffman, James R.
Assistant Examiner:
Attorney: Kapustij; Myron B., Mufatti; William F.