S-alkyl thiocarbamate base resin, plastic lens comprising the resin, and process for making the lens
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United States of America Patent
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-
Aug 7, 1990
Grant Date -
N/A
app pub date -
Feb 15, 1989
filing date -
Feb 18, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Disclosed herein are a novel and highly refractive S-alkyl thiocarbamate base resin useful in preparing lenses and a process for producing the resin comprising reacting one or more of polyisocyanate compounds and one or more of mercapto compound having at least one hydroxyl group, a plastic lens made of the resin, and a process for making a plastic lens of high profile regularity from the resin by using internal mold releasing agents in the casting polymerization process.
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