Sol of ultra-fine particles of synthetic hectorite
OwnerNobutoshi Daimon, Toichiro Izawainventors
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Abstract
This invention relates to a sol of ultra-fine particles of synthetic hectorite prepared by swelling and cleaving Li-hectorite having a formula of Li.sub.1/3 Mg.sub.2-2/3 Li.sub.1/3 (Si.sub.4 O.sub.10)F.sub.2 or Na-hectorite having a formula of Na.sub.1/3 Mg.sub.2-2/3 Li.sub.1/3 (Si.sub.4 O.sub.10)F.sub.2 in water or an organic solvent. This invention further relates to a sol of the above hectorite in which Li or Na ions co-ordinated between lattice layers of the hectorite are ion-exchanged with non-hydratable cations. This invention still further relates to a product prepared by using the above sol.
Claims5
A sol of ultra-fine particles of synthetic hectorite, prepared by swelling and cleaving Li-hectorite having the formula Li.sub.1/3 Mg.sub.2-2/3 Li.sub.1/3 (Si.sub.4 O.sub.10)F.sub.2 or Na-hectorite having the formula Na.sub.1/3 Mg.sub.2-2/3 Li.sub.1/3 (Si.sub.4 O.sub.10)F.sub.2 in water or an organic solvent, and ion-exchanging the Li or Na ions co-ordinated between the lattice layers of the hectorite with a non-hydratable cation selected from the group consisting of K.sup.+, Ag.sup.+, Cu.sup.+, Ba.sup.2.sup.+, Pb.sup.2.sup.+, Sn.sup.2.sup.+, Zn.sup.2.sup.+, Al.sup.3.sup.+, Bi.sup.3.sup.+ and Sb.sup.3.sup.+
Dependencies are inferred from the claim text.