Compositions: coating or plastic – Coating or plastic compositions – Inorganic materials only containing at least one metal atom
Patent
1987-12-01
1989-08-08
Bell, Mark L.
Compositions: coating or plastic
Coating or plastic compositions
Inorganic materials only containing at least one metal atom
10618711, 106467, 106486, 501145, 423118, 1621816, 1621818, C04B 1410, C04B 3304
Patent
active
048549711
ABSTRACT:
There is disclosed a method for improving the rheological properties of a clay mineral which, when dispersed with water, either releases into solution or retains on its surface multivalent cations, which method includes the step of treating the clay mineral in aqueous suspension with an aluminosiliceous material having a cation exchange capacity of at least 50 meq/100 g, said aluminosiliceous material being employed in an amount sufficient to react with a significant proportion of the exchangeable cations in the clay mineral. Also disclosed is an aqueous suspension of a clay mineral, a method for preparing a paper coating composition and a method for improving the rheological properties of a clay mineral.
REFERENCES:
patent: 4017324 (1977-04-01), Eggers
patent: 4076548 (1978-02-01), Bundy et al.
patent: 4188456 (1980-02-01), Patel
Hackh's Chem. Dictionary, 4th Edition, pp. 70, 83.
McGraw-Hill's "Encyclopedia of Science", pp. 160-167.
"Clay Mineralogy", 2d Ed., Ralph E. Grim, pp. 189 & 192.
Kirk-Othmer's Concise Encyclopedia of Chemical Technology pp. 772-773.
Gane Patrick A. C.
O'Neill Graham P.
Bell Mark L.
E.C.C. International Limited
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