UV RADIATION BLOCKING SILICONE-HYDROGEL COMPOSITION AND SILICONE-HYDROGEL CONTACT LENS BASED THEREON Russian patent published in 2016 - IPC C08F283/12 G02B1/04 C08L83/08 

FIELD: chemistry.

SUBSTANCE: invention relates to blocking UV radiation with silicone-hydrogel compositions and contact lenses based thereon. Disclosed is a UV radiation blocking silicone-hydrogel composition containing, wt%: hydrophilic silicone macromer (25-55), UV radiation blocking monomer (0.5-2), first hydrophilic monomer (30-60), cross-linking agent (0.2-2) and a polymerisation initiator (0.2-1). Hydrophilic silicone macromer has general formula: V-L-S-(L′-V′)_x, where V and V′ independently represent polymerisable groups based on ethylene, L and L′ independently represent a covalent bond or binding group, S is a siloxane group containing, as a substitute apart from alkyl groups, a group selected from , , and *-CH₂O(CH₂CH₂O)_f-CH₂CH₂OCH₃, and x equals 0 or 1. Also disclosed is a silicone contact lens comprising a UV radiation blocking silicone-hydrogel composition.

EFFECT: technical result is silicone-hydrogel contact lens obtained based on disclosed composition has improved hydrophilic properties and wettability for efficient prevention of lipid and protein deposits compared to existing silicone-hydrogel contact lenses.

21 cl, 3 tbl