Loading patent…
AssigneeNovartis AG
InventorsJohn Martin Lally, Friedrich Stockinger, Charlotte Lynn Cooper, Achim Muller, Deborah Jean Mulcahy, Bernhard Seiferling
Estimating the term…
The invention relates to a process for the manufacture of tinted ophthalmic moldings comprising the steps of (a) providing a water soluble polymer precursor having crosslinkable or polymerizable groups; (b) providing a pigment dispersion comprising an inorganic or organic pigment and a dispersing agent; (c) mixing the metal phthalocyanine dye or pigment with the polymer precursor to form a tinted prepolymerization mixture, (d) dispensing the tinted prepolymerization mixture into a mold, (e) applying radiation to the tinted prepolymerization mixture in the mold, thereby crosslinking or polymerizing the polymer precursor and entrapping the dye or pigment within the polymeric network of the resultant ophthalmic molding, and (f) opening the mold so that the ophthalmic molding can be removed from the mold. According to the process, tinted ophthalmic moldings, particularly full-body tinted soft contact lenses having improved properties, are prepared with an improved efficiency.
A process for the manufacture of a tinted ophthalmic molding comprising the steps of:
A process for the manufacture of a tinted ophthalmic molding comprising the steps of:
A process for the manufacture of a tinted ophthalmic molding comprising the steps of:
A process for the manufacture of a tinted ophthalmic molding comprising the steps of:
Dependencies are inferred from the claim text.