RADIATION-PROTECTIVE LANTHANIDE-CONTAINING COMPOUNDS Russian patent published in 2011 - IPC C08F8/42 C08F220/10 C08F230/04 G21F1/10 

FIELD: chemistry.

SUBSTANCE: invention relates to lanthanide-containing compounds, consisting of a copolymer of ethyl methacrylate and 3-allylpentanedione-2,4 (100:1), bonded through a β-diketonate group with a lanthanide (+3) ion, which in turn is bonded with molecules of a ligand which is β-diketone of general formula: , where Ln is a lanthanide (+3) ion (La³⁺, Pr³⁺, Nd³⁺, Sm³⁺, Eu³⁺, Gd³⁺ Tb³⁺, Dy³⁺, Ho³⁺, Er³⁺, Tm³⁺, Yb³⁺), n is the number of ethyl methacrylate links in the copolymer chain; m is the number of lanthanide-containing links in the copolymer chain; R₁, R₂, R₃, R₄ are organic radicals (CH₃ - methyl, C₆H₅-phenyl): - R₁=R₂=R₃=R₄=CH₃ - lanthanide (+3) ion, bonded with the polymer part of the compound through a pentanedione-2,4 fragment (acetyl acetone) and a ligand which is acetyl acetone; - R₁ = R₃ = CH₃, R₂=R₄=C₆H₅ - lanthanide (+3) ion bonded with the polymer part of the compound through benzoyl acetone fragment and a ligand which is benzyol acetone; - R₁=R₂=R₃=R₄=C₆H₅ - lanthanide (+3) ion bonded with the polymer part of the compound through a dibenzoyl methane fragment and a ligand which is dibenzoyl methane; - R₁=R₃=R₄=CH₃, R₂=C₆H₅ - lanthanide (+3) ion bonded with the polymer part of the compound through a benzoyl acetone fragment and a ligand which is acetyl acetone; - R₁=R₂=C₆H₅, R₃=R₄=CH₃ - lanthanide (+3) ion bonded with the polymer part of the compound through a dibenzoyl methane fragment and a ligand which is acetyl acetone; - R₁=R₂=R₃=C₆H₅, R₄=CH₃ - lanthanide (+3) bonded with the polymer part of the compound through a dibenzoyl methane fragment and a ligand which is benzoyl acetone. Said compounds have radiation-protective properties.

EFFECT: obtaining material which is optically transparent in the visible and ultraviolet range and resistant to ionising radiation.

1 ex, 1 tbl, 9 dwg