| 摘要 |
PROBLEM TO BE SOLVED: To provide a composite powder that prevents a caking phenomenon and has excellent drop strength.SOLUTION: A composite powder is made by covering the surface of tabular powder with an ultraviolet scattering agent with an average primary particle diameter of 100 nm or more, where a content of the ultraviolet scattering agent is 0.4 pts.mass or more relative to the tabular powder 1 pts.mass.SELECTED DRAWING: None |
