Mixed metal hydroxide containing a dispersant

Details Mixed metal hydroxide containing a dispersant Mixed metal hydroxide containing a dispersant

1990-05-16

1992-03-10

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

252 2, 252 851, 252 8512, 252 28, 252 71, 25217425, 252184, 252309, 252314, 2523155, 2523635, 507103, 507109, 507119, 507128, B01F 314, B01J 1300

Patent

active

050947788

ABSTRACT:
Novel compositions useful as fluid gelling agents, especially for use in subterranean applications such as drilling fluids, are prepared by reacting an aqueous dispersion of a clay, such as bentonite, with an aqueous gel of a monodispersed mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) A.sub.J.sup.n where D is a divalent metal, such as Mg, T is a trivalent metal, such as Al, and A represents other monovalent or polyvalent anions, the formula being described in detail in the disclosure.

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patent: 4310449 (1982-01-01), Reischl
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patent: 4477367 (1984-10-01), Burba, III
patent: 4664843 (1987-05-01), Burba, III et al.
patent: 4790954 (1988-12-01), Burba, III et al.
patent: 4990268 (1991-02-01), Burba, III et al.

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