C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
C01B 35/10 (2006.01)
Patent
CA 2175751
The invention is directed to provide novel sunscreen materials which are to protect human skin from the harmful ultraviolet radiation. Said sunscreen materials, designated Bolite-S, according to the invention having a composition, expressed in terms of moles of oxides as follows: mRO:vB2O3:wFe2O3:xSiO2:yTiO2:zH2O wherein " R" is selected from the group consisting of hydrogen, the alkyl groups of which contain 1-5 carbon atoms, and mixtures thereof, "m" is a value greater than 0 but not exceeding 1200, " v" is a value greater than 0 but not exceeding 500, " w" is a value greater than 0 but not exceeding 100, "x" is a value greater than 0 but not exceeding 200, "y" is a value of from 1 to 300 and "z" is a value of from 0 to 300, said Bolite-S materials in calcined form having a characteristic X-ray powder diffraction pattern which contains the interplanar spacings and their assigned strengths set forth in Table 1.
Asaoka Hisatoshi
Riches Mckenzie & Herbert Llp
LandOfFree
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