Vinyl carbonate and vinyl carbamate contact lens material...

C - Chemistry – Metallurgy – 08 – F

Patent

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C08F 18/00 (2006.01) C07C 69/96 (2006.01) C07C 271/14 (2006.01) C07C 271/16 (2006.01) C07C 271/18 (2006.01) C07C 271/20 (2006.01) C07C 271/24 (2006.01) C07C 271/28 (2006.01) C07D 207/27 (2006.01) C07D 207/404 (2006.01) C07F 7/08 (2006.01) C07F 7/18 (2006.01) C08F 18/24 (2006.01) C08F 30/08 (2006.01) C08F 218/00 (2006.01) G02B 1/04 (2006.01)

Patent

CA 2014210

Novel monomers of the general formula Image where b is 0 or 1, a is 1, 2, 3 or 4, R2 is a monovalent alkyl radical and R is an organic radical. The novel monomers may be employed to produce novel copolymers useful as hydrogel, soft non-hydrogel and/or rigid gas permeable contact lens materials.

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