Titanium oxide particles and method for producing same
The method addresses the challenge of producing titanium oxide particles with fine, uniform sizes and low chlorine content by using a controlled reaction and dechlorination process, ensuring stability and performance in high humidity conditions, suitable for dielectric materials and other applications.
WO2026140228A1PCT designated stage Publication Date: 2026-07-02RESONAC CORP
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- RESONAC CORP
- Filing Date
- 2024-12-27
- Publication Date
- 2026-07-02
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Figure JP2024046409_02072026_PF_FP_ABST
Abstract
This method for producing titanium oxide particles includes: a reaction step for introducing a raw material gas (G1) containing titanium tetrachloride and an inert gas and an oxidizing gas (G2) containing at least one of oxygen gas and water vapor and an inert gas into a reaction tube to generate a reaction gas; a cooling step for introducing a cooling medium and cooling the reaction gas to obtain raw material titanium oxide particles; a first dechlorination step for heating the raw material titanium oxide particles at 300-600°C while bringing water vapor into contact with the raw material titanium oxide particles, the mass ratio (mass of water / mass of raw material titanium oxide particles) of water and raw material titanium oxide particles being 0.01 or more; and a second dechlorination step for heating the raw material titanium oxide particles that have been subjected to the first dechlorination step at 30°C to less than 100°C while bringing water vapor into contact with the raw material titanium oxide particles, the mass ratio (mass of water / mass of raw material titanium oxide particles) of water and raw material titanium oxide particles being 0.01 or more.
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