Optical material composed of resin having high refractive index

Details Optical material composed of resin having high refractive index Optical material composed of resin having high refractive index

1989-09-08

1990-11-27

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5263232, C08F23620

Patent

active

049736400

ABSTRACT:
A resin having a low specific gravity, an excellent impact resistance and a high refractive index can be produced by radical polymerization of a polymerizable monomer mixture composed essentially of [I] at least one polymerizable monomer selected from the group consisting of specific polyfunctional (meth)acrylates, [II] at least one polymerizable monomer selected from the group consisting of styrene and alpha-methylstyrene, and [III] at least one polymerizable monomer selected from the group consisting of unsaturated nitriles. This invention provides an optical material composed of said resin, especially, a lens.

REFERENCES:
patent: 3751399 (1973-08-01), Lee, Jr. et al.
patent: 4533710 (1985-08-01), Olson et al.
patent: 4803252 (1989-02-01), Kida et al.

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