Claims
- 1. A process for preparing a titanium dioxide powder composition, the process comprisingvolatalizing anhydrous iron (III) chloride together with an inert gas, transferring the volatalized anhydrous iron (III) chloride to the mixing chamber of a burner, mixing the volatalized iron (III) chloride in the burner with hydrogen, air and gaseous titanium tetrachloride in a ratio which corresponds to the composition of the iron oxide/titanium dioxide mixed oxide, burning the 4-component mixture in a reaction chamber of said burner and separating the solid iron oxide/titanium dioxide mixed oxide from the gaseous reaction product, thereby producing a flame hydrolytically prepared iron oxide/titanium dioxide mixed oxide with a BET surface area of 10 to 150 m2/g, which contains 0.5 to 50 wt. % of iron oxide, with reference to the total amount, as a component of the mixed oxide.
- 2. A process as set forth in claim 1 including the step of removing adhering hydrogen chloride in moist air.
- 3. A skin cosmetic containing a flame-hydrolytically prepared titanium dioxide component which contains iron oxide in an amount of about 0.05 to about 10 wt. % of the titanium dioxide component.
Priority Claims (1)
Number |
Date |
Country |
Kind |
43 02 896 |
Feb 1993 |
DE |
|
Parent Case Info
This is a continuation of Application No. 08/181,426, filed on Jan. 14, 1994 which was abandoned.
The present invention relates to titanium dioxide powder which contains iron oxide, a process for its preparation and use.
US Referenced Citations (4)
Foreign Referenced Citations (5)
Number |
Date |
Country |
2313331 |
Sep 1974 |
DE |
0023587 |
Nov 1981 |
EP |
0241647 |
Oct 1987 |
EP |
0317875 |
May 1989 |
EP |
5-330825 |
Dec 1993 |
JP |
Non-Patent Literature Citations (4)
Entry |
Derwent Abstract AN 94-022607 for JP-A-5 330 825, Dec. 1993. |
Patent Abstracts of Japan, vol. 15, No. 440 (C-0883) Nov. 11, 1991 for JP-A-03 186 348. |
Patent Abstracts of Japan, vol. 13, No. 260 (C-607) Jun. 15, 1989 for JP-A-01 061 325. |
Hattori, et al., Bul. Chem. Soc. Jpn., 56, 3208-3215 (1983). |
Continuations (1)
|
Number |
Date |
Country |
Parent |
08/181426 |
Jan 1994 |
US |
Child |
08/528044 |
|
US |