Highly refractive urethane polymers for use in optical lenses and lenses prepared therefrom
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United States of America Patent
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Apr 17, 1984
Grant Date -
N/A
app pub date -
Feb 17, 1982
filing date -
Feb 19, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Highly refractive urethane polymers for use in optical lenses and the lenses produced therefrom are obtained by polymerizing at least one unsaturated urethane compound which is the reaction product of at least one xylylene diisocyanate and at least one compound selected from the group comprising: ##STR1## where: R.sub.1 is either H or CH.sub.3 R.sub.2 is a remnant radical of a substituent or non-substituent hydrocarbon having 2-4 carbon atoms; ##STR2## where: R.sub.3 is either H or CH.sub.3 m=2-5; CH.sub.2 =CH--CH.sub.2 --OH; and 3 (CH.sub.2 =CH--CH.sub.2 --O--CH.sub.2).sub.2 CHOH. 4
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