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composite material comprising adduct or reaction product of at least one inorganic clay with at least one crystallinemixed stratified metal hydroxides and procedure for the manufacture of composite material
composite material comprising adduct or reaction product of at least one inorganic clay with at least one crystallinemixed stratified metal hydroxides and procedure for the manufacture of composite material
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 LimDdT(OH)(m+2d+3+na)Aan, 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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