| 摘要 |
PURPOSE:To obtain the titled transparent resin useful as optical lenses, especially as a lens material for correcting glasses, having high refractive index and large Abbe's number, by polymerizing a specific (meth)acrylic monomer with a polyisocyanate, etc. CONSTITUTION:(A) One or more of (meth)acrylic monomers (e.g. compound shown by formula II, etc.) shown by formula I (X is Cl, Br or I; R1 is alicyclic group or aliphatic group containing cross-linkable alicyclic group; R2 is H or methyl; m and n are 1-5) is polymerized with (B) a polyisocyanate (e.g. xylylene diisocyanate, etc.) or (C) the component B and one or more copolymerizable vinyl monomers [preferably one having >=1.5 refractive index as homopolymer, such as cyclohexyl (meth)acrylate, etc.].
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