With the amide chemical material or the ester chemical material

摘要

PROBLEM TO BE SOLVED: To provide an in-oil dispersant composition for electronic materials which has a sufficient dispersion performance even if a nonaromatic organic solvent having little influence on the environment is used; and to provide an in-oil dispersion.;SOLUTION: The in-oil dispersant composition for electronic materials contains at least one kind of dispersant selected from amidated compounds or esterified compounds of copolymers of olefins and unsaturated dibasic acids, wherein the amidation rate or the esterification rate with respect to the unsaturated dibasic acid is 10-60 mol%, and a nonaromatic organic solvent has a solubility parameter of 8.5-22 (cal/cm³)^1/2. The in-oil dispersion contains the in-oil dispersant composition and a powder for an electronic material.;COPYRIGHT: (C)2009,JPO&INPIT