Optics: eye examining – vision testing and correcting – Spectacles and eyeglasses – Ophthalmic lenses or blanks
Patent
1982-09-07
1984-07-31
Cannon, James C.
Optics: eye examining, vision testing and correcting
Spectacles and eyeglasses
Ophthalmic lenses or blanks
428212, 428913, G02B 104, G02C 704
Patent
active
044626657
ABSTRACT:
Polymer blends capable of forming hydrogels upon immersion in water are bonded by heat and pressure alone to water-resistant polymer compositions compatible with vinyl lactam polymers to form laminates. Bonding can also be achieved by casting on the surface of the polymer composition a solution of the blend in a solvent inert to the polymer composition and evaporating the solvent. The blends are optically clear blends of vinyl lactam polymers or copolymers with water insoluble copolymers of a hydrophobic water-insoluble ethylenically unsaturated monomer, an ethylenically unsaturated monomer containing an acid group, and optionally a hydrophilic ethylenically unsaturated monomer free from acidic groups.
REFERENCES:
patent: 3027347 (1962-03-01), Fikentscher et al.
patent: 3511659 (1970-05-01), Dennis, Jr. et al.
patent: 3723171 (1973-03-01), Fuchs
patent: 3928262 (1975-12-01), Ono et al.
patent: 3953660 (1976-04-01), Ishida
patent: 3983276 (1976-09-01), Matsumoto
patent: 4233367 (1980-11-01), Ticknor et al.
Hoffman et al., Am. Chem. Soc. Div. of Polym. Chem. Preprints, vol. 13(2), 723-728 (1972).
Cannon James C.
The Kendall Company
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