Resin additive, inorganic-particle-containing resin composition, and production methods therefor

Abstract

To provide a method for producing a resin additive with which inorganic particles can be incorporated in large amounts into resins and which has satisfactory flowability even when having a high inorganic-particle content and can improve thermal conductivity and lower water absorption. A method for producing a resin additive comprising a mixing step in which inorganic particles, an organic acid, and a pH adjusting agent are mixed together to obtain a mixture having a pH of 5-9, a pretreatment step in which the surface of the inorganic particles is treated with an organic acid to form a surface treatment layer having a functional group, and a post-treatment step in which the inorganic particles having the surface treatment layer are treated with a nitrogen-containing post-treatment agent to form a post-treatment layer on the surface of the inorganic particles.

Dependencies are inferred from the claim text.