Ultrafine particulate titanium oxide with low chlorine and...

Details Ultrafine particulate titanium oxide with low chlorine and... Ultrafine particulate titanium oxide with low chlorine and...

C - Chemistry, Metallurgy

01

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C01G 23/07 (2006.01) B01J 21/06 (2006.01) B01J 35/00 (2006.01) B01J 35/02 (2006.01) C08K 3/22 (2006.01) C08L 83/04 (2006.01) H01L 31/04 (2006.01) H01M 14/00 (2006.01)

Patent

CA 2477495

An anatase-type ultrafine particulate titanium oxide produced through a vapor- phase process, which has low chlorine content and exhibits excellent dispersibility as compared with conventional titanium oxide having a BET specific surface area comparable to that of the ultrafine particulate titanium oxide. When the ultrafine particulate titanium oxide is subjected to dechlorination, the titanium oxide satisfies the relation between BET surface area (B) and chlorine content (C) represented by the aforementioned formula (2). The ultrafine particulate titanium oxide has a D90 of 2.5 (m or less as measured by means of laser diffraction particle size analysis. The present invention also provides a process for producing the ultrafine particulate titanium oxide.

La présente invention a trait à un oxyde de titane particulaire ultrafin de type anastase produit par un procédé en phase vapeur ayant une faible teneur en chlore et présentant une excellent dispersabilité par rapport à l'oxyde de titane classique ayant une surface spécifique BET comparable à celle de l'oxyde de titane particulaire ultrafin. Lorsque l'oxyde de titane particulaire ultrafin est soumis à la déchloration, l'oxyde de titane satisfait la relation entre la surface spécifique BET (B) et la teneur en chlore (C) représentée par la formule (2). L'oxyde de titane particulaire ultrafin présente un D90 égal ou inférieur à 2,5 µm tel que mesuré au moyen de l'analyse granulométrique par diffraction laser. La présente invention a trait également à un procédé de production de l'oxyde de titane particulaire ultrafin.

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