Optical lenses prepared from crosslinkable acrylic compositions
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United States of America Patent
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-
Mar 15, 1983
Grant Date -
N/A
app pub date -
Apr 13, 1981
filing date -
Apr 13, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An optical lens having an absorbance of less than about 0.1 for visible radiation of a wavelength in the range of from about 400 to about 600 nanometers is prepared from a crosslinkable acrylic composition. The composition consists essentially of an acrylic monomer and an acrylated urethane oligomer and exhibits a shrinkage upon curing of less than about 0.4%. The lens is prepared by introducing the crosslinkable composition into a lens-forming means and curing it until it is substantially crosslinked.
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