COMPOSITION OF THE METAL OXIDE Russian patent published in 2007 - IPC C09C1/00 C09C1/36 C09C3/08 A61Q17/04 A61K8/04 A61K8/29 

FIELD: chemical industry; public health; medicine; production of the titanium dioxide composition.

SUBSTANCE: the invention is pertaining to production of the titanium dioxide composition. The invention may be used in production of the sun-protective products providing the effective protection against UV-radiation and including titanium dioxide. The composition of the titanium dioxide contains at least one nonionic surface-active substance having the value of HLB(hydrophilic -lipophilic balance) within the interval from 7 up to 18, and the hydrophobic particles of the titanium dioxide, where the average length of the primary, particles is within the interval from 50 to 90 nanometers, the average width of the primary particles is within the range from 5 to 20 nanometers, and the average-volumetric diameter of the secondary particles makes less than 45 nanometers. The hydrophobic particles of the titanium dioxide have the absorption factor at 524 nanometers (Е₅₂₄) - less than 2.0 l/g/cm, the absorption factor at 450 nanometers (Е₄₅₀) - less than 3.0 l/g/cm, the absorption factor at 360 nanometers (Е₃₆₀) - more than 3 l/g/cm, the absorption factor at 308 nanometers (Е₃₀₈) - more than 30 l/g/cm, the maximum factor of the absorption (Е_max) - more than 45 l/g/cm and λ(max) - within the interval from 260 to 290 nanometers. The invention allows to improve the transparency of the sun-protective products containing the titanium dioxide.

EFFECT: the invention ensures the increased transparency of the sun-protective products containing the titanium dioxide.

24 cl, 4 ex