X-RAY PROTECTION COMPOSITION Russian patent published in 2007 - IPC G21F1/10 

FIELD: ionizing emission protection materials.

SUBSTANCE: composition contains polymeric binder, shielding powdered filler based on rare-earth element compounds, and curing agent. Polymeric binder is oligourethane prepolymer, curing agent is a substance selected from amino compounds, and shielding filler is a mixture of fluorinated rare-earth element oxides selected only from light-weight group. Composition further contains tungsten carbide as modifying additive. Following proportions of ingredients are used, wt %: oligourethane prepolymer 9.10-13.50, amine curing agent 2.90-4.30, mixture of fluorinated rare-earth element oxides 29.00-49.30, tungsten carbide 32.90-59.00.

EFFECT: enhanced x-ray shielding efficiency.

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