Patent US4464274A successfully refreshed from Google Patents.
US4464274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organophilic clay suspending agents
Assignee: Venture Innovations Inc
•
Filing: 1983-05-04
•
Granted: 1984-08-07
•
Expires: 2003-05-04
Abstract
Abstract The invention provides methods of preparing organophilic clay suspending agents having enhanced dispersibility in oleaginous liquids, the organophilic clay containing suspending agents, and methods of increasing the viscosity of oleaginous liquids utilizing these suspending agents. The suspending agents are of particular use in mineral oil based invert emulsion drilling fluids.
Inventors
- 👤 Roy F. House
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 06:18
CPC Classifications
C; C10; C10M; C10M123/00; C10M123/02; C01; C01B; C01B33/00; C01B33/20; C01B33/36; C01B33/38; C01B33/44; C09; C09K; C09K8/00; C09K8/02; C09K8/32; C10M113/00; C10M113/16; C10M2201/00; C10M2201/14; Y; Y10; Y10S; Y10S507/00; Y10S507/901; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
102 words
The method of producing an organoclay suspending agent which comprises extruding a mixture containing a clay selected from the group consisting of attapulgite, sepiolite, and mixtures thereof, from about 20 to about 60 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 20% to about 59% by weight of water, and from about 1% to about 15% by weight of an alcohol containing from 1 to 5 carbon atoms, and thereafter grinding the organoclay gellant without removing the water or alcohol therefrom.
Claim 2
Independent Claim
102 words
The method of producing an organoclay suspending agent which comprises extruding a mixture containing a clay selected from the group consisting of attapulgite, sepiolite, and mixtures thereof, from about 20 to about 60 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 20% to about 59% by weight of water, and from about 1% to about 15% by weight of an alcohol containing from 1 to 5 carbon atoms, and thereafter grinding the organoclay gellant without removing the water or alcohol therefrom.
Claim 3
Dependent Claim
10 words
The method of claim 1 wherein said clay is attapulgite.
Claim 4
Dependent Claim
10 words
The method of claim 1 wherein said clay is sepiolite.
Claim 5
Dependent Claim
54 words
The method of claim 1 wherein the amount of said quaternary compound is from about 30 to about 50 milliequivalents per 100 grams of 100% active clay, the amount of water is from about 27.5% to about 53.5% by weight, and the amount of alcohol is from about 1.5% to about 12.5% by weight.
Claim 6
Dependent Claim
10 words
The method of claim 4 wherein said clay is attapulgite.
Claim 7
Independent Claim
14 words
The method of claims 1, 2, 4, or 5, wherein said alcohol is isopropanol.
Claim 8
Dependent Claim
49 words
An organoclay suspending agent comprising from about 40% to about 65% of an organophilic clay, from about 1.0% to about 15% of an alcohol having from 1 to 5 carbon atoms, and from about 20% to about 59% water, said gellant being prepared by the process of claim 1.
Claim 9
Dependent Claim
35 words
The agent of claim 7 wherein said organophilic clay is the reaction product of attapulgite clay and a quaternary compound selected from the group consisting of quaternary ammonium salts, quaternary phosphonium salts, and mixtures thereof.
Claim 10
Dependent Claim
26 words
The agent of claim 7 wherein the amount of said quaternary compound is from about 30 to 50 milliequivalents per 100 grams of 100% active clay.
Claim 11
Dependent Claim
10 words
The agent of claim 9 wherein said clay is attapulgite.
Claim 12
Dependent Claim
10 words
The agent of claim 9 wherein said clay is sepiolite.
Claim 13
Dependent Claim
38 words
The agent of claims 7, 8, 9, 10 or 11 which contains from about 45% to about 60% of said organoclay, from about 1.5% to about 12.5% of said alcohol, and from about 27.5% to about 53.5% water.
Claim 14
Dependent Claim
15 words
The agent of claims 7, 8, 9, 10, or 11, wherein said alcohol is isopropanol.
Claim 15
Dependent Claim
37 words
The agent of claims 7, 8, 9, 10, or 11, which contains from about 45% to about 60% of said organoclay, from about 2.0% to about 10% of isopropanol, and from about 30% to about 53% water.
Claim 16
Independent Claim
107 words
A method of increasing the viscosity of an oleaginous liquid which comprises extruding a mixture containing a clay selected from the group consisting of attapulgite, sepiolite, and mixtures thereof, from about 20 to about 60 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 20% to about 59% by weight of water, and from about 1% to about 15% by weight of an alcohol containing from 1 to 5 carbon atoms, and thereafter dispersing the extrudate into the oleaginous liquid without removing the water of alcohol therefrom.
Claim 17
Independent Claim
107 words
A method of increasing the viscosity of an oleaginous liquid which comprises extruding a mixture containing a clay selected from the group consisting of attapulgite, sepiolite, and mixtures thereof, from about 20 to about 60 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 20% to about 59% by weight of water, and from about 1% to about 15% by weight of an alcohol containing from 1 to 5 carbon atoms, and thereafter dispersing the extrudate into the oleaginous liquid without removing the water of alcohol therefrom.
Claim 18
Independent Claim
27 words
A method of increasing the viscosity of an oleaginous liquid which comprises mixing with the oleaginous liquid the gellant of claims 7, 8, 9, 10, or 11.
References Cited (Backward Citations)
US3654171A
Cited
US3755166A
Cited
US3812937A
Cited
US4287086A
Cited
US4040974A
Cited
US4116866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-07 | 1988-02-06 | 1988-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-07 | 1992-02-06 | 1992-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-07 | 1996-02-06 | 1996-08-07 | $7700.00 | Window Closed / Lapsed |