Optical plastics and methods for making the same

Details Optical plastics and methods for making the same Optical plastics and methods for making the same

1992-01-07

1994-06-07

Short, Patricia A.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523500, 525 27, 525 39, 525 48, 351159, C08L 6706, G02C 702

Patent

active

053190076

ABSTRACT:
Ophthalmic lens compositions comprising a cured polymer mixture of (A) an unsaturated polyester resin composition, (B) a monomer of the formula ##STR1## (C) an optional vinyl, acrylate monomer, or other monomer or mixtures thereof, and (D) a free radical generating catalyst system. Such a curable plastic material can form ophthalmic lenses of superior properties including high index of refraction which reduces the amount of material required for corrections.

REFERENCES:
patent: 4139578 (1979-02-01), Baughman
patent: 4139578 (1979-02-01), Baughman et al.
patent: 4178327 (1979-12-01), Hall
Patent Abstracts of Japan, vol. 8, No. 241 (C-250)[1678], Nov. 6, 1984 & JP-A-59 122 514, (Hitachi Kasei Kogyo K.K.), Jul. 16, 1984.
Patent Abstracts of Japan, vol. 6, No. 266 (C-142)[1144], Dec. 25, 1982; and JP-A-57 158 216, (Nippon Denshin Denwa Kosha), Sep. 30, 1982.

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