| 摘要 |
AO-3163 AHS/sam 1/21/77 ABRASION-RESISTANT LENSES AND PROCESS OF MAKING 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 tiecoat 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. |
