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US 2007/0182919 A1Published application
Methods and systems for leaching and releasing silicone hydrogel ophthalmic lenses with n-hexanol solutions
OwnerDouglas Vanderlaan, Charmesh Dubey +2inventors
InventorsDouglas Vanderlaan, Charmesh Dubey, James Ford, Frank Molock
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Abstract
This invention includes methods and systems for processing hydrogel lenses using aqueous solutions as leaching aids and as release aids.
Claims20
A method for releasing an ophthalmic lens comprising silicone from a mold part, the method comprising:
- exposing said ophthalmic lens to a first aqueous solution comprising:
- about 2% or more of a first release agent comprising n-hexanol;
- and 1% or more of C12E10;
- and 1% or more of SCAW;
- and
- heating said first aqueous solution to which the ophthalmic lens is exposed.
3 more elements
Dependencies are inferred from the claim text.