Optical resin articles
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United States of America Patent
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Sep 15, 1992
Grant Date -
N/A
app pub date -
Feb 8, 1991
filing date -
Aug 11, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention provides a shaped resin article for optical use which is a three-dimensional reaction product cast from a molding composition essentially comprising a tetrahalobisphenol A epichlorohydrin polycondensate-(meth)acrylic acid adduct (A) and a polyisocyanate compound (B). In another aspect of the invention, the resin article is cast from a composition containing a styrenic or ester monomer (C) in addition to (A) and (B). In still another aspect, the resin article is cast from a composition containing a phenolic compound (D) in addition to (A), (B) and (C).
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