SILICONE HYDROGELS CONTAINING N-ALKYLMETHACRYLAMIDES AND CONTACT LENSES MADE OF THEM Russian patent published in 2021 - IPC C08F290/06 C08F283/12 C08J3/75 G02B1/04 G02C7/04 

FIELD: optical devices.

SUBSTANCE: invention relates to silicone hydrogels. A silicone hydrogel is proposed formed of a reaction mixture containing at least one N-alkylmethacrylamide and at least one silicone-containing component selected from polydimethylsiloxane with monomethacryloxypropyl and mono-n-butyl end groups, polydimethylsiloxane with mono-(2-hydroxy-3-methacryloxypropyl)-propylester and mono-n-butyl end groups, diacryloxypolidimethylsiloxane, containing 20 dimethylsiloxyl repeating links in average, and tris(trimethylsiloxy)silyl styrene. The resulting hydrogel has a modulus of elasticity of at least 6.895 MPa and a water content of at least 10%. Options of the specified silicone hydrogel, contact lenses based on it, and a method for manufacturing the corresponding contact lens are also proposed.

EFFECT: technical result is that the proposed silicone hydrogels are used in the manufacture of biomedical devices, ophthalmic lenses and contact lenses with improved characteristics, including for patients with astigmatism.

64 cl, 1 dwg, 16 tbl, 58 ex