| 简介 |
PROBLEM TO BE SOLVED : To provide a rare earth fluoride fine particle dispersion using a nonpolar solvent, which can expect effects of inhibiting aggregation of fine particles, corrosion of a coated material and the like.
SOLUTION : The rare earth fluoride fine particle dispersion includes (A) rare earth fluoride fine particles having a hydrophilic group within the structure, (B) a nonpolar solvent, and (C) a nonionic surfactant, wherein the nonpolar solvent (B) is a nonpolar solvent having a dielectric constant of ≤10 or a mixed solution of two or more solvents including the nonpolar solvent having a dielectric constant of ≤10. In the rare earth fluoride fine particle dispersion, the rare earth includes at least one of La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Sc and Y.
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