Contact lenses and materials and methods of making same
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United States of America Patent
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May 21, 1996
Issued Date -
N/A
app pub date -
Jun 6, 1995
filing date -
May 31, 1988
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An interpenetrating network copolymer, method of producing same, and method of producing optical lens blanks and finished lenses therefrom. The method broadly involves the preparation of first and second mixtures of polymerizable vinyl monomers and interrupting the polymerization of the first mixture at a relative viscosity of from about 1.05 to about 10 by admixing the partially polymerized first mixture with the second mixture to create a casting solution and thereafter, when desired, polymerizing molded casting solution in heat to create a solid lens material.
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Family
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Cited Art Landscape
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