| abstract |
The present invention relates to a macroinitiator comprising at least one hydrophobic segment in the molecule, wherein the molecular weight of the hydrophobic segment is 300 to 1800. The present invention also relates to block copolymers, wetting agents and polymeric materials associated with the block copolymers of the present invention, which are suitable for use in medical devices, especially ophthalmic devices, including contact lenses, ophthalmic lenses, punctal plugs and artificial cornea. |