| 摘要 |
PYROGENICALLY PREPARED, SURFACE-MODIFIED, STRUCTURALLY MODIFIED TITANIUM DIOXIDES AND PYROGENICALLY PREPARED, SURFACE-MODIFIED, STRUCTURALLY MODIFIED TITANIUM DIOXIDE MIXED OXIDES ARE PREPARED BY STRUCTURALLY MODIFYING AND THEN SURFACE MODIFYING THE TITANIUM DIOXIDE OR TITANIUM DIOXIDE MIXED OXIDE. THE TITANIUM DIOXIDES CAN BE USED TO PRODUCE SUNSCREEN FORMULATIONS
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