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

1978-11-13

1980-04-08

Hoffman, James R.

Coating processes

Optical element produced

427163, 427164, 427379, 427387, B05D 138, B05D 704, G02B 110

Patent

active

041973356

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.

REFERENCES:
patent: 3582398 (1971-06-01), Ringler
patent: 3707397 (1972-12-01), Gagnon
patent: 3968305 (1976-07-01), Oshima et al.
patent: 3968309 (1976-07-01), Matsuo et al.
patent: 3978178 (1976-08-01), Oshima et al.
patent: 3986997 (1976-10-01), Clark
patent: 4027073 (1977-05-01), Clark
patent: 4041120 (1977-08-01), Oshima et al.
patent: 4045602 (1977-08-01), Sommer et al.

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