Plastic lens material and process for preparing the same
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United States of America Patent
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Apr 25, 2000
Grant Date -
N/A
app pub date -
Dec 8, 1998
filing date -
Jun 17, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Disclosed herein are a plastic lens material having both excellent optical and mechanical properties and having a low specific gravity, and a production process for producing the plastic lens material having excellent various properties and a low specific gravity. The plastic lens material comprises a copolymer obtained by radical-polymerizing a reaction product of a component [A] containing a polyhydric alcohol obtained by subjecting a dimer and/or a trimer of a higher unsaturated fatty acid having 11 to 22 carbon atoms with a component [B] containing an isocyanate compound having a radical-polymerizable unsaturated bond in its molecule together with a copolymerizable monomer [C].
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