Michael E Houston

US Patent:

20040266941, Dec 30, 2004

Filed:

Aug 20, 2004

Appl. No.:

10/480765

Inventors:

Michael Houston - Deerfield IL, US
Toshiaki Hino - Berkeley CA, US
David Soane - Piedmont CA, US

International Classification:

C08K003/00

US Classification:

524/506000, 524/515000, 524/516000, 524/523000

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.