Method for preparing a contact lens containing deprotected ultraviolet blockers
AssigneeBausch + Lomb Ireland Limited
InventorsFeng-Yang Shih, Mohammad Vatankhah Varnosfaderani, Alok Kumar Awasthi
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Abstract
A method for preparing a contact lens containing an ultraviolet (UV) blocker is disclosed. The method involves (a) polymerizing a monomeric mixture comprising (i) one or more contact lens-forming comonomers, and (ii) one or more UV blockers comprising a phenolic group having a protected hydroxyl moiety and one or more ethylenically unsaturated reactive groups to obtain a polymerization product comprising the one or more UV blockers comprising a phenolic group having a protected hydroxyl moiety, and (b) deprotecting the protected hydroxyl moiety of the one or more UV blockers of the polymerization product.
Claims20
A method for preparing a contact lens containing an ultraviolet (UV) blocker, comprising:
- (a) polymerizing under ultraviolet polymerization conditions a monomeric mixture comprising (i) one or more contact lens-forming comonomers, (ii) one or more UV blockers comprising a phenolic group having a protected hydroxyl moiety and one or more ethylenically unsaturated reactive groups, and (iii) one or more blue light blockers comprising a phenolic group comprising a protected hydroxyl moiety and one or more ethylenically unsaturated reactive groups to obtain a polymerization product comprising the one or more UV blockers comprising a phenolic group having a protected hydroxyl moiety and the one or more blue light blockers comprising a phenolic group having a protected hydroxyl moiety;
- and
- (b) deprotecting the protected hydroxyl moiety of the one or more UV blockers and the protected hydroxyl moiety of the one or more blue light blockers of the polymerization product.
Dependencies are inferred from the claim text.