Lens composition articles and method of manufacture
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United States of America Patent
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Apr 28, 1987
Grant Date -
N/A
app pub date -
Apr 14, 1986
filing date -
Apr 14, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
New copolymer composition, methods for processing the copolymers into optical devices and articles resulting therefrom, especially intraocular and contact lenses having outstanding extended wear and daily wear properties. The composition comprises, in weight percent: from 3% to 35% polyfluoroalkyl acrylate; from 45% to 65% acryloxyalkylpolysiloxane; 1% to 15% acryloxyalkylsilanol; 2% to 20% polyacryloxyalkylpolysiloxane; 2% to 15% polyol polyacrylate and 2% to 15% polymerizable ethylenically unsaturated monomeric wetting agent such as acrylic acid. The composition may also contain 0 to 15% acrylic acid ester of a monohydric alcohol having no more than 20 carbon atoms and from 0.05% to about 2.0% of a free radical initiator.
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