Patent US4425244A successfully refreshed from Google Patents.
US4425244A
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Organophilic clay gellants
Assignee: Venture Innovations Inc
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Filing: 1982-01-25
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Granted: 1984-01-10
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Expires: 2002-01-25
Abstract
Abstract The invention provides methods of preparing organophilic clays having enhanced dispersibility in organic liquids, the organophilic clay containing gellants, and methods of increasing the viscosity of organic liquids utilizing these gellants.
Inventors
- 👤 Roy F. House
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:07
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/36; C01B33/38; C01B33/44; C09; C09K; C09K8/00; C09K8/02; C09K8/32; C10; C10M; C10M113/00; C10M113/16; C10M123/00; C10M123/02; C10M2201/00; C10M2201/14
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
179 words
An organoclay slurry comprising from about 20% to about 50% by weight of an organophilic clay, from about 50% to about 80% by weight of an aqueous solution of a low molecular weight polar organic compound wherein the concentration of said compound is from about 2.5% to about 97.5% by weight of said solution, and from 0% to about 40%, based on the weight of said organophilic clay, of an alkali metal base selected from the group consisting of sodium carbonate, potassium carbonate, ammonium carbonate, and mixtures thereof, wherein said solution contains: (a) from about 20% to about 65% methanol when said compound is methanol; (b) from about 10% to about 65% ethanol when said compound is ethanol; (c) from about 2.5% to about 50% of an alcohol containing three carbon atoms when said compound is said alcohol; (d) from about 2.5% to about 35% of an alcohol containing four carbon atoms when said compound is said alcohol; and (e) from about 2.5% to about 20% of an alcohol containing five carbon atoms when said compound is said alcohol.
Claim 2
Dependent Claim
179 words
An organoclay slurry comprising from about 20% to about 50% by weight of an organophilic clay, from about 50% to about 80% by weight of an aqueous solution of a low molecular weight polar organic compound wherein the concentration of said compound is from about 2.5% to about 97.5% by weight of said solution, and from 0% to about 40%, based on the weight of said organophilic clay, of an alkali metal base selected from the group consisting of sodium carbonate, potassium carbonate, ammonium carbonate, and mixtures thereof, wherein said solution contains: (a) from about 20% to about 65% methanol when said compound is methanol; (b) from about 10% to about 65% ethanol when said compound is ethanol; (c) from about 2.5% to about 50% of an alcohol containing three carbon atoms when said compound is said alcohol; (d) from about 2.5% to about 35% of an alcohol containing four carbon atoms when said compound is said alcohol; and (e) from about 2.5% to about 20% of an alcohol containing five carbon atoms when said compound is said alcohol.
Claim 3
Dependent Claim
75 words
The slurry of claim 1 wherein said compound is selected from the group consisting of alcohols containing from 1 to 6 carbon atoms, ketones containing from 3 to 5 carbon atoms, nitroalkanes containing from 1 to 3 carbon atoms, alkylene carbonates containing from 3 to 5 carbon atoms, amides containing from 1 to 4 carbon atoms, nitriles containing from 2 to 4 carbon atoms, esters containing from 2 to 4 carbon atoms, and mixtures thereof.
Claim 4
Dependent Claim
18 words
The slurry of claim 1 wherein said aqueous solution contains from about 20% to about 65% of methanol.
Claim 5
Dependent Claim
18 words
The slurry of claim 1 wherein said aqueous solution contains from about 10% to about 65% of ethanol.
Claim 6
Dependent Claim
23 words
The slurry of claim 1 wherein said aqueous solution contains from about 2.5% to about 50% of an alcohol containing three carbon atoms.
Claim 7
Dependent Claim
23 words
The slurry of claim 1 wherein said aqueous solution contains from about 2.5% to about 35% of an alcohol containing four carbon atoms.
Claim 8
Dependent Claim
23 words
The slurry of claim 1 wherein said aqueous solution contains from about 2.5% to about 20% of an alcohol containing five carbon atoms.
Claim 9
Dependent Claim
18 words
The slurry of claim 1 wherein said aqueous solution contains from about 40% to about 95% of acetone.
Claim 10
Dependent Claim
20 words
The slurry of claim 1 wherein said aqueous solution contains from about 30% to about 95% of methyl ethyl ketone.
Claim 11
Dependent Claim
19 words
The slurry of claim 1 wherein said aqueous solution contains from about 30% to about 85% of dimethyl formamide.
Claim 12
Dependent Claim
36 words
The slurry of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, which contains from about 0.5% to about 25%, based on the weight of said organophilic clay, of said alkali metal base.
Claim 13
Dependent Claim
181 words
The slurry of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, wherein said organophilic clay is the reaction product of a smectite clay selected from the group consisting of montmorillonite, hectorite, saponite, stevensite, and mixtures thereof, and a quaternary ammonium compound comprising a quaternary ammonium cation and an anion having the structural formula: ##STR2## where A is an anion selected from the group consisting of Cl, Br, I, NO 2 , OH, NO 3 , CH 3 SO 4 , and mixtures thereof, and R 1 , R 2 , R 3 , and R 4 are independently selected from the group consisting of C a H 2a+1-x B x , C b H 2b-1-x B x , C 6 H 5-x B x CH 2 , and mixtures thereof, where 1≦a≦30, 3≦b≦30, 0≦x≦2, and B is a radical selected from the group consisting of OH, Cl, Br, C 6 H 5 and mixtures thereof, wherein at least one R contains at least 12 carbon atoms, and wherein said quaternary ammonium contains at least 20 carbon atoms.
Claim 14
Dependent Claim
159 words
The slurry of claim 12 wherein the quaternary ammonium cation is selected from the group consisting of trimethyl octadecyl ammonium, trimethyl ricinoleyl ammonium, dimethyl didodecyl ammonium, dimethyl diotadecyl ammonium, dimethyl dicoco ammonium, dimethyl dihydrogenated tallow ammonium, dimethyl diricinoleyl ammonium, dimethyl benzyl octadecyl ammonium, dimethyl benzyl hydrogenated tallow ammonium, dimethyl benzyl ricinoleyl ammonium, methyl benzyl dioctadecyl ammonium, methyl benzyl dihydrogenated tallow ammonium, methyl benzyl diricinoleyl ammonium, methyl benzyl dicoco ammonium, methyl dibenzyl octadecyl ammonium, methyl dibenzyl hydrogenated tallow ammonium, methyl dibenzyl ricinoleyl ammonium, methyl dibenzyl coco ammonium, methyl tribenzyl ammonium, methyl trioctadecyl ammonium, methyl trihydrogenated tallow ammonium, methyl triricinoleyl ammonium, methyl tricoco ammonium, dibenzyl dicoco ammonium, dibenzyl dihydrogenated tallow ammonium, dibenzyl dioctadecyl ammonium, dibenzyl diricinoleyl ammonium, tribenzyl coco ammonium, tribenzyl hydrogenated tallow ammonium, tribenzyl dioctadecyl ammonium, tribenzyl coco ammonium, tribenzyl ricinoleyl ammonium, and mixtures thereof, and wherein the amount of quaternary ammonium compound is from about 75 to about 120 milliequivalents per 100 grams of clay, 100% active clay basis.
Claim 15
Dependent Claim
64 words
The slurry of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, or 10, wherein said organophilic clay is selected from the group consisting of dimethyl dihydrogenated tallow ammonium bentonite, methyl benzyl dihydrogenated tallow ammonium bentonite, and mixtures thereof, wherein the amount of quaternary ammonium compound is from about 75 to about 120 milliequivalents per 100 grams of bentonite, 100% active clay basis.
Claim 16
Independent Claim
466 words
The method of producing an organophilic clay slurry which comprises extruding a mixture containing a smectite clay, from about 75 to about 120 millequivalents per 100 grams of 100% active clay of a quaternary ammonium salt comprising a quaternary ammonium cation and an anion having the structural formula: ##STR3## where A is an anion selected from the group consisting of Cl, Br, I, NO 2 , OH, NO 3 , CH 3 SO 4 , and mixtures thereof, and R 1 , R 2 , R 3 , and R 4 are independently selected from the group consisting of C a H 2a+1-x B x , C b H 2b-1-x B x , C 6 H 5-x B x CH 2 , and mixtures thereof, where 1≦a≦30, 3≦b≦30, 0≦x≦2, and B is a radical selected from the group consisting of OH, Cl, Br, C 6 H 5 and mixtures thereof, wherein at least one R contains at least 12 carbon atoms, and wherein said quaternary ammonium cation contains at least 20 carbon atoms, from about 15% to about 100%, based on the weight of 100% active clay, of water, from about 5% to about 50%, based on the weight of 100% active clay, of a first alcohol containing from 1 to 5 carbon atoms, and from about 0% to about 20%, based on the weight of the organophilic clay of an alkali metal carbonate, and thereafter shearing said extruded organophilic clay in an aqueous solution of a low molecular weight polar organic compound wherein the concentration of said compound is from about 2.5% to about 97.5% by weight of said solution, wherein said slurry contains from about 20% to about 40% organophilic clay, wherein the ratio of water to said first alcohol plus said polar organic compound in said slurry is in the range from about 97.5/2.5 to about 5/95, and wherein said polar organic compound is selected from the group consisting of alcohols containing from 1 to 6 carbon atoms, ketones containing from 3 to 6 carbon atoms, nitroalkanes containing from 1 to 3 carbon atoms, alkylene carbonates containing from 3 to 4 carbon atoms, amides containing from 1 to 4 carbon atoms, esters containing from 2 to 4 carbon atoms, and mixtures thereof, wherein said solutions contains: (a) from about 20% to about 65% methanol when said compound is methanol; (b) from about 10% to about 65% ethanol when said compound is ethanol; (c) from about 2.5% to about 50% of an alcohol containing three carbon atoms when said compound is said alcohol; (d) from about 2.5% to about 35% of an alcohol containing four carbon atoms when said compound is said alcohol; and (e) from about 2.5% to about 20% of an alcohol containing five carbon atoms when said compound is said alcohol.
Claim 17
Independent Claim
466 words
The method of producing an organophilic clay slurry which comprises extruding a mixture containing a smectite clay, from about 75 to about 120 millequivalents per 100 grams of 100% active clay of a quaternary ammonium salt comprising a quaternary ammonium cation and an anion having the structural formula: ##STR3## where A is an anion selected from the group consisting of Cl, Br, I, NO 2 , OH, NO 3 , CH 3 SO 4 , and mixtures thereof, and R 1 , R 2 , R 3 , and R 4 are independently selected from the group consisting of C a H 2a+1-x B x , C b H 2b-1-x B x , C 6 H 5-x B x CH 2 , and mixtures thereof, where 1≦a≦30, 3≦b≦30, 0≦x≦2, and B is a radical selected from the group consisting of OH, Cl, Br, C 6 H 5 and mixtures thereof, wherein at least one R contains at least 12 carbon atoms, and wherein said quaternary ammonium cation contains at least 20 carbon atoms, from about 15% to about 100%, based on the weight of 100% active clay, of water, from about 5% to about 50%, based on the weight of 100% active clay, of a first alcohol containing from 1 to 5 carbon atoms, and from about 0% to about 20%, based on the weight of the organophilic clay of an alkali metal carbonate, and thereafter shearing said extruded organophilic clay in an aqueous solution of a low molecular weight polar organic compound wherein the concentration of said compound is from about 2.5% to about 97.5% by weight of said solution, wherein said slurry contains from about 20% to about 40% organophilic clay, wherein the ratio of water to said first alcohol plus said polar organic compound in said slurry is in the range from about 97.5/2.5 to about 5/95, and wherein said polar organic compound is selected from the group consisting of alcohols containing from 1 to 6 carbon atoms, ketones containing from 3 to 6 carbon atoms, nitroalkanes containing from 1 to 3 carbon atoms, alkylene carbonates containing from 3 to 4 carbon atoms, amides containing from 1 to 4 carbon atoms, esters containing from 2 to 4 carbon atoms, and mixtures thereof, wherein said solutions contains: (a) from about 20% to about 65% methanol when said compound is methanol; (b) from about 10% to about 65% ethanol when said compound is ethanol; (c) from about 2.5% to about 50% of an alcohol containing three carbon atoms when said compound is said alcohol; (d) from about 2.5% to about 35% of an alcohol containing four carbon atoms when said compound is said alcohol; and (e) from about 2.5% to about 20% of an alcohol containing five carbon atoms when said compound is said alcohol.
Claim 18
Dependent Claim
58 words
The method of claim 15 wherein said smectite clay is bentonite, said quaternary ammonium cation is dimethyl dihydrogenatedtallow or methyl benzyl dihydrogenatedtallow, said first alcohol is isopropanol, and said polar organic compound is selected from the group consisting of alcohols containing from 1 to 5 carbon atoms, acetone, methyl ethyl ketone, dimethyl formamide, propylene carbonate, and mixtures thereof.
Claim 19
Independent Claim
157 words
The method of activating an organophilic clay for enhanced dispersibility in an oleaginous liquid which comprises mixing said organophilic clay with an aqueous solution of a low molecular weight polar organic compound, wherein the concentration of said compound is from about 2.5% to about 97.5% by weight of said solutions, to produce a pumpable slurry containing from about 20% to about 50% of said organophilic clay, wherein said solutions contains: (a) from about 20% to about 65% methanol when said compound is methanol; (b) from about 10% to about 65% ethanol when said compound is ethanol; (c) from about 2.5% to about 50% of an alcohol containing three carbon atoms when said compound is said alcohol; (d) from about 2.5% to about 35% of an alcohol containing four carbon atoms when said compound is said alcohol; and (e) from about 2.5% to about 20% of an alcohol containing five carbon atoms when said compound is said alcohol.
Claim 20
Independent Claim
157 words
The method of activating an organophilic clay for enhanced dispersibility in an oleaginous liquid which comprises mixing said organophilic clay with an aqueous solution of a low molecular weight polar organic compound, wherein the concentration of said compound is from about 2.5% to about 97.5% by weight of said solutions, to produce a pumpable slurry containing from about 20% to about 50% of said organophilic clay, wherein said solutions contains: (a) from about 20% to about 65% methanol when said compound is methanol; (b) from about 10% to about 65% ethanol when said compound is ethanol; (c) from about 2.5% to about 50% of an alcohol containing three carbon atoms when said compound is said alcohol; (d) from about 2.5% to about 35% of an alcohol containing four carbon atoms when said compound is said alcohol; and (e) from about 2.5% to about 20% of an alcohol containing five carbon atoms when said compound is said alcohol.
Claim 21
Dependent Claim
171 words
The method of claim 17 wherein said organophilic clay is the reaction product of a smectite clay selected from the group consisting of montmorillonite, hectorite, saponite, stevensite, and mixtures thereof, and a quaternary ammonium compound comprising a quaternary ammonium cation and an anion having the structural formula: ##STR4## where A is an anion selected from the group consisting of Cl, Br, I, NO 2 , OH, NO 3 , CH 3 SO 4 , and mixtures thereof, and R 1 , R 2 , R 3 , and R 4 are independently selected from the group consisting of C a H 2a+1-x B x , C b H 2b-1-x B x , C 6 H 5-x B x CH 2 , and mixtures thereof, where 1≦a≦30, 3≦b≦30, 0≦x≦2, and B is a radical selected from the group consisting of OH, Cl, Br, C 6 H 5 and mixtures thereof, wherein at least one R contains at least 12 carbon atoms, and wherein said quaternary ammonium contains at least 20 carbon atoms.
Claim 22
Dependent Claim
151 words
The method of claim 18 wherein the quaternary ammonium cation is selected from the group consisting of trimethyl octadecyl ammonium, trimethyl ricinoleyl ammonium, dimethyl didodecyl ammonium, dimethyl diotadecyl ammonium, dimethyl dicoco ammonium, dimethyl dihydrogenatedtallow ammonium, dimethyl diricinoleyl ammonium, dimethyl benzyl octadecyl ammonium, dimethyl benzyl hydrogenatedtallow ammonium, dimethyl benzyl ricinoleyl ammonium, methyl benzyl dioctadecyl ammonium, methyl benzyl dihydrogenatedtallow ammonium, methyl benzyl diricinoleyl ammonium, methyl benzyl dicoco ammonium, methyl dibenzyl octadecyl ammonium, methyl dibenzyl hydrogenatedtallow ammonium, methyl dibenzyl ricinoleyl ammonium, methyl dibenzyl coco ammonium, methyl tribenzyl ammonium, methyl trioctadecyl ammonium, methyl trihydrogenatedtallow ammonium, methyl triricinoleyl ammonium, methyl tricoco ammonium, dibenayl dicoco ammonium, dibenzyl dihydrogenatedtallow ammonium, dibenzyl diotadecyl ammonium, dibenzyl diricinoleyl ammonium, tribenzyl coco ammonium, tribenzyl hydrogenatedtallow ammonium, tribenzyl diotadecyl ammonium, tribenzyl coco ammonium, tribenzyl ricinoleyl ammonium, and mixtures thereof, and wherein the amount of quaternary ammonium compound is from about 75 to 120 milliequivalents per 100 grams of clay, 100% active clay basis.
Claim 23
Independent Claim
135 words
The method of producing an organophilic clay gellant which comprises extruding a mixture containing a smectite clay, from about 75 to about 120 milliequivalents per 100 grams of 100% active clay of a quaternary compound selected from the group consisting of quaternary ammonium salts, quaternary phosphonium salts, and mixtures thereof, from about 15% to about 100%, based on the weight of 100% active clay, of water, from about 5% to about 50%, based on the weight of 100% active clay, of an alcohol containing from 1 to 5 carbon atoms, and from 0% to about 20%, based on the weight of said organophilic clay, of an alkali metal base selected from the group consisting of sodium carbonate, potassium carbonate, and mixtures thereof, and thereafter grinding the organophilic clay without drying the water or alcohol therefrom.
Claim 24
Independent Claim
135 words
The method of producing an organophilic clay gellant which comprises extruding a mixture containing a smectite clay, from about 75 to about 120 milliequivalents per 100 grams of 100% active clay of a quaternary compound selected from the group consisting of quaternary ammonium salts, quaternary phosphonium salts, and mixtures thereof, from about 15% to about 100%, based on the weight of 100% active clay, of water, from about 5% to about 50%, based on the weight of 100% active clay, of an alcohol containing from 1 to 5 carbon atoms, and from 0% to about 20%, based on the weight of said organophilic clay, of an alkali metal base selected from the group consisting of sodium carbonate, potassium carbonate, and mixtures thereof, and thereafter grinding the organophilic clay without drying the water or alcohol therefrom.
Claim 25
Dependent Claim
43 words
The method of increasing the viscosity of an organic liquid which comprises mixing with said organic liquid a viscosifying amount of the organophilic clay slurry of claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 16, 17, 18, or 19.
References Cited (Backward Citations)
US3654171A
Cited
US3755166A
Cited
US3812937A
Cited
US4287086A
Cited
US4040974A
Cited
US4116866A
Cited
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