Viscous organic systems containing an organophilic clay gellant without an organic dispersant therefor
AssigneeNL Industries, Inc.
InventorsClaude M. Finlayson, John W. Jordan
Life of this patent
Estimating the term…
Abstract
The viscosity of liquid organic systems is increased by adding thereto an organophilic clay gellant which is the reaction product of a smectite clay having a cation exchange capacity of at least 0.75 milliequivalents per gram and from 1.00 to less than 1.20 milliequivalents per gram of clay of a methyl benzyl dialkyl ammonium salt, wherein the two alkyl groups independently contain from 16 to 18 carbon atoms, and from 0% to 1% water in the absence of a polar organic dispersant for the gellant.
Claims12
A method of increasing the viscosity of a liquid organic system in the absence of a polar organic dispersant comprising mixing with said liquid organic system an amount sufficient to effect said viscosity increase of an organophilic clay comprising the reaction product of a methyl benzyl dialkyl ammonium compound and a smectite clay having a cation exchange capacity of at least 75 milliequivalents per 100 grams of said clay, wherein said alkyl radicals independently contain from 16 to 18 carbon atoms, and wherein the amount of said ammonium compound is sufficient to impart to the organophilic clay the enhanced dispersion characteristics desired, said amount of the ammonium compound being from 100 to less than 120 milliequivalents per 100 grams of said clay, 100% active clay basis, and from 0% to 1.0% water, wherein no polar organic dispersant for said organophilic clay is added to said organic system.
A method of increasing the viscosity of a liquid organic system with an organophilic clay in the absence of a polar organic dispersant for said organophilic clay to a value at least equal to the viscosity which would be obtained if said organic system contained a polar organic dispersant for said organophilic clay comprising mixing with said system an amount sufficient to effect said viscosity increase of an organophilic clay comprising the reaction product of a methyl benzyl dialkyl ammonium compound and a smectite clay having a cation exchange capacity of at least 75 milliequivalents per 100 grams of said clay, wherein said alkyl radicals independently contain from 16 to 18 carbon atoms, and wherein the amount of said ammonium compound is from 100 to less than 120 milliequivalents per 100 grams of said clay, 100% active clay basis, and from 0% to 1.0% water.
A method of increasing the viscosity of a liquid organic system which comprises mixing with said liquid organic system a sufficient amount of an organophilic clay to increase the viscosity of the liquid organic system, said organophilic clay comprising the reaction product of methyl benzyl dihydrogenated tallow ammonium chloride and a smectite-type clay selected from the group consisting of hectorite and sodium bentonite, wherein the amount of methyl benzyl dihydrogenated tallow ammonium chloride is from 100 to less than 120 milliequivalents per 100 grams of said clay, 100% active clay basis, and wherein no polar organic dispersant for said organophilic clay is added to said liquid organic system.
Dependencies are inferred from the claim text.