US4664843A
Expired / Lapsed
US
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Mixed metal layered hydroxide-clay adducts as thickeners for water and other hydrophylic fluids
Assignee: Master Builders Solutions Deutschland GmbH
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Filing: 1985-07-05
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Granted: 1987-05-12
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Expires: 2005-07-05
Abstract
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 m D d T(OH) m+2d+3+na ) A a 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.
Inventors
- 👤 John L. Burba, III
- 👤 Audrey L. Barnes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:09
CPC Classifications
B; B82; B82Y; B82Y30/00; C; C01; C01B; C01B33/00; C01B33/20; C01B33/26; C01B33/36; C01B33/38; C01B33/40; C01B33/44; C04; C04B; C04B33/00; C04B33/02; C04B33/04; C09; C09K; C09K8/00; C09K8/02; C09K8/03; C09K8/032; C09K8/04; C09K8/14; C09K8/145; C09K8/16; C09K8/60; C09K8/62; C09K8/66; C09K8/665; C09K8/84; C09K8/845; C10; C10M; C10M113/00; C10M125/00; C10M125/10; C10M173/00; C10M173/02; C10M177/00; C10M2201/00; C10M2201/02; C10M2201/06; C10M2201/0606; C10M2201/061; C10M2201/0616; C10M2201/062; C10M2201/0626; C10M2201/063; C10M2201/065; C10M2201/0656; C10M2201/066; C10M2201/0666; C10M2201/08; C10M2201/0806; C10M2201/085; C10M2201/0856; C10M2201/086; C10M2201/0866; C10M2201/087; C10M2201/0876; C10M2201/10; C10M2201/1013; C10M2201/102; C10M2201/1026; C10M2201/103; C10M2201/1036; C10M2201/14; C10M2201/145; C10M2201/16; C10M2201/18; C10N; C10N2010/00; C10N2010/04; C10N2050/00; C10N2050/01; Y; Y10; Y10S; Y10S507/00; Y10S507/901
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
114 words
A composite comprising the adduct or reaction product of at least one mineral clay with at least one monodispersed monolayer crystalline mixed metal layered hydroxide conforming essentially to the empirical formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) A.sub.a.sup.n, where m represents the number of Li ions present; the said amount being in the range of zero to about 1; D represents divalent metals ions; with d representing the amount of D ions in the range of zero to about 4; T represents trivalent metal ions; A represents monovalent or polyvalent anions of valence -n, other than OH - , with a being the amount of A anions; and where (m+2d+3+na) is equal to or greater than 3.
Claim 2
Dependent Claim
114 words
A composite comprising the adduct or reaction product of at least one mineral clay with at least one monodispersed monolayer crystalline mixed metal layered hydroxide conforming essentially to the empirical formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) A.sub.a.sup.n, where m represents the number of Li ions present; the said amount being in the range of zero to about 1; D represents divalent metals ions; with d representing the amount of D ions in the range of zero to about 4; T represents trivalent metal ions; A represents monovalent or polyvalent anions of valence -n, other than OH - , with a being the amount of A anions; and where (m+2d+3+na) is equal to or greater than 3.
Claim 3
Dependent Claim
19 words
The composition of claim 1 wherein m represents an amount in the range of about 0.5 to about 0.75.
Claim 4
Dependent Claim
19 words
The composition of claim 1 wherein d represents an amount in the range of about 1 to about 3.
Claim 5
Dependent Claim
13 words
The composition of claim 1 wherein d represents an amount of about 1.
Claim 6
Dependent Claim
26 words
The composition of claim 1 wherein D is at least one of group comsisting of Mg, Ca, Ba, Sr, Mn, Fe, Co, Ni, Cu, and Zn.
Claim 7
Dependent Claim
18 words
The composition of claim 1 wherein D is at least one of the group consisting Mg and Ca.
Claim 8
Dependent Claim
9 words
The composition of claim 1 wherein D is Mg.
Claim 9
Dependent Claim
9 words
The composition of claim 1 wherein D is Ca.
Claim 10
Dependent Claim
21 words
The composition of claim 1 wherein T is at least one of the group consisting of Al, Ga, Cr, and Fe.
Claim 11
Dependent Claim
11 words
The composition of claim 1 wherein T is Al or Fe.
Claim 12
Dependent Claim
9 words
The composition of claim 1 wherein T is Al.
Claim 13
Dependent Claim
9 words
The composition of claim 1 wherein T is Fe.
Claim 14
Dependent Claim
16 words
The composition of claim 1 wherein A is at least one monovalent or polyvalent inorganic anion.
Claim 15
Dependent Claim
16 words
The composition of claim 1 wherein A is at least one monovalent or polyvalent organic anion.
Claim 16
Dependent Claim
32 words
The composition of claim 1 wherein A is at least one monovalent or polyvalent anion of the group consisting of halide, sulfate, nitrate, phosphate, carbonate, glycolate, lignosulfonate, polycarboxylate, polyacrylate, and sodium polyacrylate.
Claim 17
Dependent Claim
33 words
The composition of claim 1 wherein the mineral clay is at least one of the group consisting of bentonite, kaolinite, halloysite, smectite, illite, montmorillonite, saconite, vermiculite, chlorite, attapulgite, sepiolite, palygorskite, and Fuller's earth.
Claim 18
Dependent Claim
47 words
The composition of claim 1 wherein tne mineral clay is at least one of the classes consisting of amorphous clays of the allophane group and crystalline clays of the 2-layer type, 3-layer type, expanding type, non-expanding type, elongate type, regular mixed layer type, and chain structure type.
Claim 19
Dependent Claim
11 words
The composition of claim 1 wherein the mineral clay is bentonite.
Claim 20
Dependent Claim
12 words
The composition of claim 1 wherein the mineral clay is beneficiated bentonite.
Claim 21
Dependent Claim
22 words
The composition of claim 1 wherein the weight ratio of layered hydroxide/clay is in the range of about 0.02/1 to about 1/1.
Claim 22
Independent Claim
159 words
A method for reacting a mineral clay with a monodispersed monolayer mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) A.sub.a.sup.n, where m is an amount in the range of zero to about 1; D is a divalent metal ion, with d in the range of zero to about 4; T is a trivalent metal ion; A represents monovalent or polyvalent anions other than OH - , of valence -n, with a being the amount of A anions; (m+d) is greater than zero and (m+2d+3+na) is equal to or greater than 3, said method comprising reacting, by intimately mixing together, an aqueous gel or dispersion of said layered hydroxide with an aqueous dispersion of the clay whereby metal ions from the clay and anions from the layered hydroxide go into the aqueous solution by ion exchange of clay anions for layered hydroxide anions and whereby an adduct of the mixed metal layered hydroxide and the clay is formed.
Claim 23
Independent Claim
159 words
A method for reacting a mineral clay with a monodispersed monolayer mixed metal layered hydroxide of the formula Li.sub.m D.sub.d T(OH).sub.(m+2d+3+na) A.sub.a.sup.n, where m is an amount in the range of zero to about 1; D is a divalent metal ion, with d in the range of zero to about 4; T is a trivalent metal ion; A represents monovalent or polyvalent anions other than OH - , of valence -n, with a being the amount of A anions; (m+d) is greater than zero and (m+2d+3+na) is equal to or greater than 3, said method comprising reacting, by intimately mixing together, an aqueous gel or dispersion of said layered hydroxide with an aqueous dispersion of the clay whereby metal ions from the clay and anions from the layered hydroxide go into the aqueous solution by ion exchange of clay anions for layered hydroxide anions and whereby an adduct of the mixed metal layered hydroxide and the clay is formed.
Claim 24
Dependent Claim
23 words
The method of claim 21 wherein the mixed metal layered hydroxide is MgAl(OH) 4 .7 Cl 0 .3 and the clay is bentonite.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-11 | 1990-11-10 | 1991-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-11 | 1994-11-10 | 1995-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-11 | 1998-11-10 | 1999-05-12 | $7700.00 | Window Closed / Lapsed |