UV FILTER BASED ON CERIUM DIOXIDE DOPED WITH RARE-EARTH ELEMENTS Russian patent published in 2025 - IPC G02B5/22 C01F17/235 

Abstract RU 2834331 C1

FIELD: chemistry.

SUBSTANCE: invention relates to development of a UV filter composition with high sun protection and antioxidant properties. UV filter based on cerium dioxide doped with rare-earth elements includes an aqueous solution of polyvinyl alcohol, ammonium nitrate, ammonia and cerium dioxide, and additionally contains cerium dioxide with ions of rare-earth elements from the group La, Sm, Gd, Er, Yb.

EFFECT: development of UV filter composition, which allows to increase values of sun-protection parameters to values comparable to values λc and UVA/UVB, inherent in zinc oxide.

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RU 2 834 331 C1

Authors

Gordeev Aleksandr Aleksandrovich

Kuznetsova Svetlana Anatolevna

Dates

2025-02-05Published

2024-08-08Filed