Ammonia → Titanium Tetrachloride

An aqueous solution of titanium tetrachloride was prepared in the same manner as Example 1. 197 mL of ion-exchanged water was added to the aqueous solution of titanium tetrachloride, and then 283 g of aqueous solution of urea having a concentration of 30% by weight and kept at 80° C. was added over 100 minutes. After the resulting solution was heated and refluxed for 10 hours, an aqueous solution of ammonia having a concentration of 5% by weight was added to the solution so that it had a pH of 10. The solution was washed with water until chlorine was no longer detected, thereby providing a slurry of titanium hydroxide. Then, using the slurry of titanium hydroxide, a slurry of titanium oxide was prepared in the same manner as Example 8 (the first process). The titanium oxide was found to have an average particle diameter of 0.03 μm by electron microscopic measurement.

1. customkept at 80° C.
2. additionwas added over 100 minutes
3. temperatureAfter the resulting solution was heated
4. temperaturerefluxed for 10 hours
5. washThe solution was washed with water until chlorine

ORDレコード

ord-99de2fd08752481eb0f8be35ef11c8be

出典データセット

uspto-grants-2013_04

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US08431109B2