Patent ID: 6271269
Filing Date: 2001-08-07
Classification: B01J,B82Y,C01F,C01G,C01P,C07C,C07F,C10L

Abstract:
A process for the preparation of a storage-stable organic sol comprising:(i) reacting (a) a base reactant with (b) at least one aqueous solution of a salt of an acidic metal cation M.sup.n+ to form (c) an aqueous colloidal dispersion of M.sup.n+ values, in respective amounts of (a) and (b) effective to provide in the aqueous colloidal dispersion (c) a degree of supersaturation r in OH.sup.- ions, wherein r is defined by the following equation,r=(n3=n2)/n1wherein n1 is the number of moles of M.sup.n+ values present in the colloidal dispersion(s), n2 is the number of moles of OH.sup.- necessary to neutralize acidity introduced via the aqueous solution(s) of acidic metal cation(s) M.sup.n+, and n3 is the total number of moles of OH.sup.- introduced by the base reactant;(ii) contacting the resulting aqueous colloidal dispersion of M.sup.n+ values with (d) an organic phase comprising (d1) an organic liquid medium and (d2) an organic acid, to form (e) an aqueous/organic phase mixture; and(iii) separating mixture (e) into an aqueous phase and a product organic phase.