Method for preparing hydrophobic clay

Details Method for preparing hydrophobic clay Method for preparing hydrophobic clay

1998-12-18

2000-10-24

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

556413, 556419, 556427, 556438, 556439, 556440, 556442, C07B 708

Patent

active

061369942

ABSTRACT:
A method for the preparation of a hydrophobic clay by contacting an aqueous suspension of the clay with an organosilane of formula R.sup.1.sub.a SiX.sub.4-a or an organosiloxane comprising units of formula R.sup.2.sub.n SiO.sub.(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.

REFERENCES:
patent: 2531427 (1950-11-01), Hauser
patent: 3015645 (1962-01-01), Tyler
patent: 3839389 (1974-10-01), Neumann
patent: 4053493 (1977-10-01), Oswald
patent: 4072796 (1978-02-01), Reinhardt et al.
patent: 4302594 (1981-11-01), Berenguer et al.
patent: 5009874 (1991-04-01), Parmentier et al.
patent: 5116886 (1992-05-01), Wolff et al.

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