Method for preparing hydrophobic clay

摘要

A method for the preparation of a hydrophobic clay by contacting an aqueous suspension of the clay with an organosilane of formula R1aSiX4-a or an organosiloxane comprising units of formula R2nSiO(4-n)/2 in the presence of an acid and a water-miscible solvent. The resulting clay suspension is then contacted with a water-immiscible solvent to effect separation of the hydrophobed clay from the suspension.