发明名称 |
PLASMA SURFACE TREATMENT OF SILICONE HYDROGEL CONTACT LENSESWITH A FLEXIBLE CARBON COATING |
摘要 |
The present invention is directed to the surface treatment of silicone hydrogel contact lenses. In particular, the present invention is directed to a method of modifying the surface of a contact lens to increase its hydrophilicity by coating the lens with a carbon-containing layer made from a diolefinic compound having 4 to 8 carbon atoms. In one embodiment, an optically clear, hydrophilic coating is provided upon the surface of a silicone hydrogel lens by sequentially subjecting the surface of the lens to : a plasma oxidation reaction, followed by a plasma polymerization reaction in the presence of a diolefin in the absence of air. Finally, the resulting carbon layer is rendered hydrophilic by a further plasma oxidation reaction or by the attachment of a hydrophilic polymer chain.
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申请公布号 |
CA2373552(C) |
申请公布日期 |
2004.12.21 |
申请号 |
CA20002373552 |
申请日期 |
2000.05.12 |
申请人 |
BAUSCH & LOMB INCORPORATED |
发明人 |
VALINT, PAUL L., JR.;AMMON, DANIEL M., JR.;GROBE, GEORGE L., III;MCGEE, JOSEPH A. |
分类号 |
C08J7/04;C08J7/06;G02B1/04;(IPC1-7):C08J7/04 |
主分类号 |
C08J7/04 |
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地址 |
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