Preparation of organically modified smectites by treatment with

Details Preparation of organically modified smectites by treatment with Preparation of organically modified smectites by treatment with

1982-04-28

1984-09-04

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07F 506

Patent

active

044696396

ABSTRACT:
An organically modified smectite is produced by reacting unfractionated pulverized bentonite with an aqueous dispersion or solution of a methyl benzyl dialkyl ammonium halide salt via cation exchange. The product organoclay is equivalent in quality to a "wet" processed organoclay, and has particular utility as an ingredient in forming invert emulsion drilling mud for enhancing the rheological properties of the mud. An invert emulsion drilling mud derived from an organoclay produced by the method of the present invention will have a viscosity of at least seventy (70) centipoise at 26 C and a 10-second gel strength at 26 C of at least thirty (30) pounds per 100 square feet.

REFERENCES:
patent: 2531427 (1950-11-01), Hauser
patent: 2859234 (1958-11-01), Clem
patent: 2966506 (1960-12-01), Jordan
patent: 4105578 (1978-08-01), Finlayson et al.
patent: 4208218 (1980-06-01), Finlayson et al.
patent: 4287086 (1981-09-01), Finlayson et al.
patent: 4402881 (1983-09-01), Alther
patent: 4412018 (1983-10-01), Finlayson et al.

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