Abrasion-resistant lenses and process of making

Details Abrasion-resistant lenses and process of making Abrasion-resistant lenses and process of making

G - Physics

02

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G02B 1/04 (2006.01) B29D 11/00 (2006.01) C08J 7/04 (2006.01) G02B 1/10 (2006.01)

Patent

CA 1105784

AO-3163 AHS/sam 1/21/77 ABRASION-RESISTANT LENSES AND PROCESS OF MAKING Abstract of the Disclosure Plastic substrates of optical elements having surfaces coated with the abrasion-resistant coating compositions described in U.S. Patent No. 3,986,997 are improved by utilizing a tie- coat comprising an A-alkylenealkoxysilane where A contains a group reactive with reactive with the substrate. For some substrates, particularly polycarbonate lenses, the coating process is substantially simplified by reducing criticality of conditions when the tie-coat of the present invention is used then when the process of the aforementioned patent is followed with the tie-coats conventionally used and disclosed therein.

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