Method of making articles of dissimilar polymer compositions

C - Chemistry – Metallurgy – 08 – F

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204/109, 204/91.

C08F 2/48 (2006.01) B29C 35/08 (2006.01) B29C 59/16 (2006.01) B29D 11/00 (2006.01) C08J 3/28 (2006.01) G02B 1/04 (2006.01) B29C 39/00 (2006.01)

Patent

CA 1295281

ABSTRACT OF THE DISCLOSURE Hybrid contact lenses and other composite polymeric articles of precise dimensions are made by placing a first monomer composition in a mold and irradiating and polymerizing a central portion only with ultraviolet radiation. Unpolymerized monomer is removed, a second monomer composition is placed in contact with the polymer formed from the first monomer composition and the latter is polymerized by ultraviolet irradiation or by other means to obtain a composite article which is then machined to form a hybrid lens.

510665

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