A high solids hBN slurry, hBN paste, spherical hBN powder, and methods of making and using them

摘要

The invention relates to a hexagonal boron nitride slurry comprising about 0.5 wt.% to about 5 wt.% surfactant and about 30 wt.% to about 50 wt.% hexagonal boron nitride powder in a medium, and to a method for making the hexagonal boron nitride slurry. Further subject matter of the invention is a method for making spherical boron nitride using the hexagonal boron nitride slurry of the invention, and a method for masking a agonal boron nitride paste using the hexagonal boron nitride slurry of the invention, as well as the hexagonal boron nitride paste obtainable by the method.