Barium sulfate spherical composite powder and method for producing same

Abstract

The present invention provides a barium sulfate spherical composite powder that has significantly high strength and excellent texture, and achieves high haze while maintaining high total light transmittance, and a method for producing such a composite powder. The present invention relates to a method for producing a barium sulfate spherical composite powder, which is a method for producing a spherical composite powder of barium sulfate and silica, the method comprising the steps of (1) preparing a slurry containing particulate barium sulfate and a silica sol, (2) spray-drying the slurry, and (3) firing a dry substance obtained in the step (2).

Dependencies are inferred from the claim text.