Vermiculite dispersions and method of preparing same.

摘要

Stable vermiculite dispersions which are substantially free of settling and a method of preparing them are provided: the dispersions are obtained by treating vermiculite crystals with an anionic non-citrate chelating agent. The anionic chelating agent enhances the rate and degree of swelling of the vermiculite in an aqueous medium. The swollen vermiculite is delaminated by shearing to provide the aqueous vermiculite dispersions of the invention.