SILICONE HYDROGEL MATERIALS WITH CHEMICALLY BOUND WETTING AGENTS
0 Assignments
0 Petitions
Accused Products
Abstract
The invention provide a new class of silicone-containing prepolymers containing ethylenically unsaturated groups and latent UV-activated free radical generating moieties. This class of silicone-containing prepolymer is capable of being actinically crosslinked in the presence of one or more hydrophilic vinylic monomers to form a silicone hydrogel material with a hydrophilic surface without post curing surface treatment. The present invention is also related to silicone hydrogel contact lenses made from this class of silicone-containing prepolymers and a vinylic monomer having a latent UV-activated free radical generating moiety.
5 Citations
20 Claims
-
1-13. -13. (canceled)
-
14. An actinically crosslinkable prepolymer, comprises:
- in the copolymer chain of the prepolymer,
(1) siloxane units derived from one or more siloxane-containing vinylic monomers and/or one or more siloxane-containing macromers; (2) hydrophilic units derived from one or more first hydrophilic vinylic monomers and/or one or more hydrophilic macromers; (3) chain-extending units having latent UV-activated free radical generating moieties; and (4) ethylenically unsaturated groups, wherein the prepolymer is capable of being actinically crosslinked, in the presence of one or more second hydrophilic vinylic monomers, to form a silicone hydrogel material including dangling hydrophilic polymer chains each of which is formed from the one or more hydrophilic vinylic monomers and covalently attached to the polymer matrix of the silicone hydrogel material through one chain-extending unit. - View Dependent Claims (15, 16, 17, 18, 19)
- in the copolymer chain of the prepolymer,
-
20. A vinylic monomer, having a structure formula of (II) or (III)
Specification