Biomedical molding materials from semi-solid precursors
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United States of America Patent
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Issued Date -
Dec 30, 2004
app pub date -
Aug 20, 2004
filing date -
Jun 27, 2001
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a process for the production of polymeric moldings, such as medical device moldings and optical and ophthalmic lenses, preferably contact lenses and intraocular lenses. The invention also relates to a polymeric precursor mixture useful in polymeric moldings and to methods of making and using the polymeric precursor mixture. The semi-solid polymerizable precursor mixture comprises (i) a polymer blend, wherein the polymer blend consists of at least two dissimilar prepolymers or at least one prepolymer and a dead polymer, (ii) at least one non-reactive diluent; and (iii) optionally, at least one reactive plactisizer.
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