Chemistry: electrical and wave energy – Processes and products – Coating – forming or etching by sputtering
Patent
1997-09-18
1999-09-28
Lipman, Bernard
Chemistry: electrical and wave energy
Processes and products
Coating, forming or etching by sputtering
427558, 5253262, 5253302, 5253306, 525371, 525372, 525475, C08F 842
Patent
active
059581948
ABSTRACT:
A soft or rigid gas permeable silicon elastomer contact lens bonded with either titanium, titanium monoxide, titanium dioxide, dititanium trioxide, trititanium pentoxide, and mixtures thereof to form contact lens having high oxygen permeability, improved wetting ability, decreased fogging ability, an enhanced self-cleaning characteristic, and decreased transmissibility to ultraviolet radiation. Preferred methods of incorporating the additives is by cationic polymerization of either a coating of or in situ bonding to a silicon polymer resulting in the expression of the additive toward the exterior surface of the chemical matrix of the contact lens. Other bonding methods are electron beam evaporation., sputtering and ion implantation of the titanium additive.
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Lipman Bernard
Litman Richard C.
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