Calcium titanate particle material, method for producing same, slurry composition, and resin composition

JPWO2024247054A5Pending Publication Date: 2026-06-09
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Patent Information

Application Number
JP2025523698
Authority / Receiving Office
JP · JP
Patent Type
Applications
Priority Date
2023-05-29
Filing Date
2023-05-29
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Calcium titanate materials used in electronic devices undergo color change when exposed to ultraviolet light, leading to transmission loss issues due to high dielectric loss tangent (Df) and the need for materials with high dielectric constant (Dk) that often exhibit high Df, and there is a requirement to reduce transmission loss by lowering Df.

Method used

A calcium titanate particle material with a circularity of 0.8 or more, specific surface area, and optimized volume average particle diameter is produced through a spheroidization process, incorporating silicon dioxide to suppress color change and reduce Df, and is dispersed in a slurry or resin composition.

Benefits of technology

The calcium titanate particle material effectively optimizes the relationship between particle diameter and specific surface area, suppressing color changes over time and reducing Df, thereby minimizing transmission loss in electronic devices.

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Abstract

The present invention addresses the problem of providing a calcium titanate particle material in which a color change caused by UV irradiation is suppressed. To solve this problem, a calcium titanate particle material according to the present invention has a circularity of 0.8 or more, a volume average particle diameter of a (μm), and a specific surface area of b (m2 / g), where a is at least 0.1 but not more than 8 and ab is less than 4. With this configuration, the relationship between the volume average particle diameter and the specific surface area can be made appropriate, and as a result, changes in color over time can be suppressed.
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