Optical material of low specific gravity and excellent...

Details Optical material of low specific gravity and excellent... Optical material of low specific gravity and excellent...

C - Chemistry, Metallurgy

08

L

18/103, 18/1101,

C08L 35/02 (2006.01) B29C 39/02 (2006.01) B29D 11/00 (2006.01) C08F 222/10 (2006.01) C08L 25/00 (2006.01) G02B 1/04 (2006.01)

Patent

CA 2030598

ABSTRACT The present invention discloses an optical material having excellent transparency, impact resistance and heat resistance and having a low specific gravity and a high refractive index comprising a resin obtained by radical polymerization of specific difunctional (meth)acrylate (A) and aromatic vinyl monomer (B) and, if necessary, polymerizable monomer (C) copolymerizable with the ingre- dients (A), or (B) or by radical polymerization of the ingredients (A), (B) and (C) under the presence of a radical polymerizable or not-radical polymerizable com- pound having alkoxysilyl group, epoxy group, alcoholic hydroxy group or carboxyl group in the molecule, an optical molding product comprising the optical material, as well as production process therefor. The optical molding pro- duct is utilized as for ophthalmic lenses or lenses for various kinds of optical equipments, prisms, optical fibers, optical waveguides and optical discs.

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