Heat radiation shielding component dispersion, process for its preparation and heat radiation shielding film forming coating liquid, heat radiation shielding film and heat radiation shielding resin form which are obtained using the dispersion

摘要

A heat radiation shielding component dispersion contains fine hexaboride particles and a polymer type dispersant in which the fine hexaboride particles are dispersed. The polymer type dispersant is mixed in the fine hexaboride particles in a proportion of from 0.3 part by weight or more to less than 50 parts by weight based on 1 part by weight of the fine hexaboride particles, and the dispersion does substantially not contain any organic solvent. A process for preparing the heat radiation shielding component dispersion is characterized by adding the polymer type dispersant to a dispersion in which fine hexaboride particles have been dispersed in an organic solvent, in a mixing proportion of from 0.3 part by weight or more to less than 50 parts by weight based on 1 part by weight of the fine hexaboride particles, and thereafter removing the organic solvent.