Method of making articles of dissimilar polymer compositions

Details Method of making articles of dissimilar polymer compositions Method of making articles of dissimilar polymer compositions

1985-06-05

1987-10-20

Lowe, James

Plastic and nonmetallic article shaping or treating: processes

Optical article shaping or treating

Utilizing plasma, electric, electromagnetic, particulate, or...

264 17, 264 19, 264 21, 264 25, 264247, 264255, 425130, 4251744, 425808, B29D 1100

Patent

active

047012889

ABSTRACT:
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.

REFERENCES:
patent: 2524862 (1950-10-01), White
patent: 2525664 (1950-10-01), Gadsby et al.
patent: 3454332 (1969-07-01), Siegel
patent: 4022855 (1977-05-01), Hamblen
patent: 4113224 (1978-09-01), Clark et al.
patent: 4208362 (1980-06-01), Deichert et al.
patent: 4460523 (1984-07-01), Nufe
patent: 4472327 (1984-09-01), Nufe

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