Polymeric networks from water-soluble prepolymers

Details Polymeric networks from water-soluble prepolymers Polymeric networks from water-soluble prepolymers

C - Chemistry, Metallurgy

08

F

C08F 226/10 (2006.01) B29D 11/00 (2006.01) C08F 8/00 (2006.01) C08F 8/12 (2006.01) C08F 26/10 (2006.01) C08F 216/06 (2006.01) C08F 218/04 (2006.01) C08F 226/00 (2006.01) C08F 226/06 (2006.01) C08F 261/04 (2006.01) C08F 271/02 (2006.01) C08F 299/00 (2006.01) C08K 5/20 (2006.01) C08K 5/205 (2006.01) C08L 29/04 (2006.01) C08L 31/02 (2006.01) C08L 39/04 (2006.01) C08L 39/06 (2006.01) G02B 1/04 (2006.01) G02C 7/04 (2006.01)

Patent

CA 2163066

The present invention describes a water-soluble crosslinkable prepolymer that comprises, in the copolymer chain, units derived from the following monomeric structural units: a vinyl lactam (a), vinyl alcohol (b), optionally a lower alkanecarboxylic acid vinyl ester (c), a vinylic crosslinking agent (d) and optionally a vinylic photoinitiator (e); a process for the preparation of the novel prepolymers; crosslinked water-insoluble polymeric networks therefrom; hydrogels and moulded articles made from the crosslinked water-insoluble polymeric networks, especially contact lenses; and a process for the manufacture of hydro- gels and finished contact lenses using the mentioned crosslinkable water-soluble pre- polymers.

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