Method for producing alkaline earth metal borate dispersions

摘要

A method for producing an alkaline earth metal borate dispersion, comprising two steps of: (I) reacting at 20 DEG -100 DEG C. a mixture of the following ingredients (A) to (E) (A) 100 parts by weight of the oil-soluble neutral sulfonate of an alkaline earth metal, (B) 10-100 parts by weight of the hydroxide or oxide of an alkaline earth metal, (C) boric acid in an amount which is 0.5-6.5 times in mol that of the ingredient (B), (D) 5-50 parts by weight of water, and (E) 50-200 parts by weight of a dilution solvent and then (II) heating the reslting reaction mixture to 100 DEG -200 DEG C. to remove the water and a part of the dilution solvent as required.