C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
88/40, 18/49, 40
C08F 230/08 (2006.01) B29D 11/00 (2006.01) C08F 283/12 (2006.01) C08G 77/442 (2006.01) C08K 5/103 (2006.01) C08L 43/04 (2006.01) C08L 83/04 (2006.01) G02B 1/04 (2006.01)
Patent
CA 1134983
ABSTRACT OF THE DISCLOSURE A composition which is hydrophobic but possesses excellent wettability comprising copolymers and terpolymers of a polysiloxane and esters of acrylic and methacrylic acids. These compositons are suitable for use as ocular membranes worn in contact with the eye which possess excellent oxygen permeability, light transmission, wettability, mucophobicity, and lipophobicity and which can be worn for extremely long periods of time and then disposed of. A method of preparing the ocular membranes is disclosed, in which the composition is place between disposable molds and cured therein. The cured, mechanically and optically finished ocular membranes are recovered by the destruction of said molds and without secondary operations. The ocular membrane is a flexible, oxygen-permeable, membrane, adapted to be inserted on the eye and worn thereon continuously for extended periods.
342119
Covington William S.
Marks & Clerk
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