Patent ID: 6166124
Filing Date: 2000-12-26
Classification: C01B,C01F,C01G,C01P,C08K

Abstract:
A process for preparing a modified cationic layer compound, said process comprising: subjecting a starting compound of the general formula (I):[E.sub.e Z.sub.z D.sub.d V.sub.v (OH.sup.-).sub.x ](A.sup.n-).sub.a.qH.sub.2 O (I)to alkali-induced ripening in an aqueous medium for a period of from 2.5 to 50 nours at a temperature of from 60.degree. C. to 100.degree. C., wherein the aqueous medium has an alkali metal hydroxide molar concentration of from 1 to 6, wherein E represents at least one monovalent alkali metal cation, e represents a number of from 0 to 2, Z represents at least one divalent metal cation, z represents a number of from 0 to 6, D represents at least one trivalent metal cation, d represents a number of from 0 to 3, V represents at least one tetravalent metal cation, v represents a number of from 0 to 1, (A.sup.n-) represents an acid anion having a charge n-, and wherein n represents an integer of from 1 to 3, q represents a number of from 1 to 10, x is greater than a, and e+2z+3d+4v=x+na.