Patent ID: 8350091
Filing Date: 2013-01-08
Classification: C01D,C07B,C07C

Abstract:
1. A process for producing a potassium fluoride dispersion, comprising: preparing a mixture containing potassium fluoride and 5 to 50 parts by weight of methanol per 1 part by weight of potassium fluoride with an aprotic organic solvent having a boiling point higher than that of methanol followed by concentrating the obtained mixture to obtain a potassium fluoride dispersion consisting essentially of the potassium fluoride and the aprotic organic solvent having a boiling point higher than that of methanol, wherein the mixture being a solution wherein potassium fluoride is dissolved completely in the methanol, wherein a part or all of initial particles of the potassium fluoride in the dispersion, which have a particle diameter of 0.1 to 5 μm, are flocculated to form particles having 5 to 25 μm of volumetric average particle diameter, and the aprotic organic solvent is selected from the group consisting of ether solvents, sulfone solvents, sulfoxide solvents, amide solvents, nitrile solvents and mixtures thereof.