Vermiculite dispersions and method of preparing same

Details Vermiculite dispersions and method of preparing same Vermiculite dispersions and method of preparing same

1985-08-12

1987-04-07

Morris, Theodore

Compositions: coating or plastic

Materials or ingredients

C04B 1400

Patent

active

046558420

ABSTRACT:
Stable vermiculite dispersions which are substantially free of settling and a method of preparing same are provided. The dispersions are obtained by treating the vermiculite platelets of which the dispersion is comprised with citrate anion. The citrate anion functions as a swelling agent for the vermiculite and enhances the rate and extent of swelling in an aqueous medium. The swollen vermiculite is delaminated by shearing to provide the inventive dispersions, which comprise a suspension of the delaminated platelets and citrate anion.

REFERENCES:
patent: 2511904 (1950-06-01), Clasen et al.
patent: 3325340 (1967-01-01), Walker
patent: 3434917 (1969-03-01), Kraus et al.
patent: 3540892 (1970-11-01), Lard et al.
patent: 4144083 (1979-03-01), Abercrombie, Jr.
patent: 4267062 (1981-05-01), Byerley
patent: 4309222 (1982-01-01), Hoyt

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