IMPACT RESISTANT POLYUREAURETHANE LENS
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United States of America Patent
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Issued Date -
Jul 5, 2007
app pub date -
Mar 14, 2007
filing date -
Nov 16, 2001
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
The present invention relates to a polyether-containing polyureaurethane lens. The polyureaurethane lens can include a prepolymer comprising a polyisocyanate and a polyether-containing polyol material that can be reacted with an amine-containing curing agent to produce the polyureaurethane lens of the present invention. The polyether-containing polyureaurethane lens can have a hard coating on both surfaces and a maximum center thickness of 2.2 mm in a piano configuration, with an impact resistance of at least 148 feet per second as defined by The High Impact Test.
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