HYDROPHILIC MATERIALS WITH HIGH REFRACTIVE INDEX Russian patent published in 2021 - IPC A61F2/00 C08F220/30 A61L27/16 

FIELD: medicine.

SUBSTANCE: present invention relates to a hydrophilic intraocular lens, a composition for use in hydrophilic intraocular lenses and a method for obtaining a composition. The hydrophilic intraocular lens contains copolymer containing: the first monomeric sub-link containing a polymerized methacrylate group and C₂-C₆ aliphatic carbon fragment containing at least two hydroxyl substituents; the second monomeric sub-link different from the first monomeric sub-link and containing a polymerized methacrylate group, at least one side group containing (i) an aryloxy fragment containing at least one halogen, and (ii) C₃ aliphatic carbon fragment binding the aryloxy fragment to the polymerized methacrylate group, where the specified aliphatic carbon fragment contains at least one hydroxyl substituent; and the third monomeric sub-link different from the first and second monomeric sub-links and containing a polymerized methacrylate group and at least one 2-ethoxyethoxyethyl side group. The composition for use in hydrophilic intraocular lenses, in addition to the specified monomorphic links, may optionally contain the fourth monomeric sub-link different from the first, second and third monomeric sub-links, containing a polymerized methacrylate group and at least one alkoxyalkyl side group. This method includes the preparation of a mixture of comonomers and its polymerization by adding CGI 819 photo initiator.

EFFECT: development of improved intraocular lens materials, including hydrophilic materials with higher refractive indices, ensuring the absence of stickiness after the introduction of intraocular lenses and providing difficult-to-achieve combinations of properties, such as the possibility of introduction through a small incision while maintaining good mechanical properties, contributing to improved surgical results.

19 cl, 2 tbl, 4 ex