Antifogging plastic lens material
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United States of America Patent
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-
Dec 19, 1995
Issued Date -
N/A
app pub date -
Dec 3, 1993
filing date -
Dec 18, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An antifogging plastic material is disclosed that is particularly suitable for use as a disposable fog-resistant lens. The lens material comprises a substantially transparent polyester substrate; a layer of polyvinylidene chloride-containing polymer on the polyester substrate; a water permeable colloid layer on the polyvinylidene chloride-containing layer; and a polyvinyl alcohol-containing layer on the water permeable colloid layer.
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Cited Art Landscape
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