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Patent US4683259A successfully refreshed from Google Patents.
US4683259A
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Resin compositions comprising organoclays of improved dispersibility
Assignee: SOUTHERN CLAY PRODUCTS Inc A Corp OF TEXAS
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Filing: 1986-11-07
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Granted: 1987-07-28
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Expires: 2006-11-07
Abstract
Abstract Resin-containing compositions, e.g. unsaturated polyester or epoxy resin compositions, are prepared using an organoclay of improved dispersibility. The organoclay is prepared by suspending a smectite clay in water to form a fluid suspension; treating the suspension with a solution of an inorganic salt, the cation of which has a valency of at least two, the concentration of the salt being such as to flocculate the smectite clay substantially completely; mixing the suspension of the flocculated smectite clay with a quaternary ammonium compound, at least one of the four alkyl groups of which has from 10 to 24 carbon atoms; and dewatering the resultant product.
Inventors
- 👤 Howard Goodman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:16
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K3/346; C01; C01B; C01B33/00; C01B33/20; C01B33/36; C01B33/38; C01B33/44; C08K9/00; C08K9/04
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
117 words
Resin compositions comprising a resin and a readily dispersible organoclay, said organoclay being prepared by a method comprising the steps of: (a) suspending a smectite clay in water to form an aqueous suspension; (b) treating said aqueous suspension of the smectite clay with a solution of an inorganic salt, wherein the cation of said inorganic salt has a valency of at least 2, the concentration of the salt being such as to flocculate the smectite clay substantially completely; (c) mixing the suspension of the flocculated smectite clay with a quaternary ammonium compound at least one of the four alkyl groups of which has from 10 to 24 carbon atoms; and (d) dewatering the product of step (c).
Claim 2
Dependent Claim
117 words
Resin compositions comprising a resin and a readily dispersible organoclay, said organoclay being prepared by a method comprising the steps of: (a) suspending a smectite clay in water to form an aqueous suspension; (b) treating said aqueous suspension of the smectite clay with a solution of an inorganic salt, wherein the cation of said inorganic salt has a valency of at least 2, the concentration of the salt being such as to flocculate the smectite clay substantially completely; (c) mixing the suspension of the flocculated smectite clay with a quaternary ammonium compound at least one of the four alkyl groups of which has from 10 to 24 carbon atoms; and (d) dewatering the product of step (c).
Claim 3
Dependent Claim
14 words
Compositions in accordance with claim 1 wherein the valency of said cation is 3.
Claim 4
Dependent Claim
11 words
Compositions in accordance with claim 2, wherein said cation is aluminum.
Claim 5
Dependent Claim
28 words
Compositions in accordance with claim 2, wherein the concentration of the solution of the salt containing the cation is in the range of 0.001 M to 0.02 M.
Claim 6
Dependent Claim
39 words
Compositions in accordance with claim 1, wherein the valency of said cation is 2, and wherein the concentration of the solution of the salt containing the cation is in the range of from about 0.2 M to 2 M.
Claim 7
Dependent Claim
16 words
Compositions according to claim 1, wherein the dewatered product of step (c) is dried and milled.
Claim 8
Dependent Claim
21 words
Compositions according to claim 1, wherein the quaternary ammonium compound mixed with the aqueous suspension of the smectite clay is molten.
Claim 9
Dependent Claim
120 words
Compositions according to claim 1, wherein the quaternary ammonium compound can be represented by the general formula: ##STR3## wherein R 1 is selected from saturated and unsaturated alkyl groups having from 10 to 24 carbon atoms, R 2 and R 3 , which may be the same or different, are each selected from saturated and unsaturated alkyl groups having from 1 to 24 carbon atoms and aralkyl groups having from 7 to 10 carbon atoms, R 4 is selected from alkyl groups having from 1 to 6 carbon atoms and aralkyl groups having from 7 to 10 carbon atoms, and X is selected from OH, Cl, Br, I, NO 2 , CH 3 SO 4 and CH 3 . COO.
Claim 10
Dependent Claim
64 words
Compositions according to claim 8, wherein the quaternary ammonium compound is selected from the group consisting of benzyl methyl dialkyl ammonium chlorides, dimethyl dialky ammonium chlorides, benzyl dimethyl alkyl ammonium chlorides, benzyl trialkyl ammonium chlorides and methyl trialkyl ammonium chlorides in which the one or more alkyl group represents a mixture of hydrocarbon radicals derived from tallow having from 14 to 20 carbon atoms.
Claim 11
Dependent Claim
38 words
Compositions according to claim 1, wherein the smectite clay is mixed with the quaternary ammonium compound in proportions such that there are present from 95 to 140 milliequivalents of quaternary ammonium cation per 100 g of dry clay.
Claim 12
Dependent Claim
25 words
Resin compositions according to claim 1, in which the resin is selected from the group consisting of alkyd resins, unsaturated polyester resins and epoxy resins.
Claim 13
Dependent Claim
15 words
Resin compositions according to claim 11, in which the resin is an unsaturated polyester resin.
Claim 14
Dependent Claim
9 words
Resin compositions according to claim 11, being coating formulations.
Claim 15
Dependent Claim
17 words
Resin compositions according to claim 12 in which the resin is used as an unsaturated polyester/styrene system.
Claim 16
Dependent Claim
122 words
An organoclay dispersed in a polar organic solvent system, or an aliphatic organic solvent system, said organoclay being prepared by a method comprising the steps of: (a) suspending a smectite clay in water to form an aqueous suspension; (b) treating said aqueous suspension of the smectite clay with a solution of an inorganic salt wherein the cation of said inorganic salt has a valency of at least 2, the concentration of the salt being such as to flocculate the smectite clay substantially completely; (c) mixing the suspension of the flocculated smectite clay with a quaternary ammonium compound at least one of the four alkyl groups of which has from 10 to 24 carbon atoms; and (d) dewatering the product of step (c).
Claim 17
Dependent Claim
122 words
An organoclay dispersed in a polar organic solvent system, or an aliphatic organic solvent system, said organoclay being prepared by a method comprising the steps of: (a) suspending a smectite clay in water to form an aqueous suspension; (b) treating said aqueous suspension of the smectite clay with a solution of an inorganic salt wherein the cation of said inorganic salt has a valency of at least 2, the concentration of the salt being such as to flocculate the smectite clay substantially completely; (c) mixing the suspension of the flocculated smectite clay with a quaternary ammonium compound at least one of the four alkyl groups of which has from 10 to 24 carbon atoms; and (d) dewatering the product of step (c).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-07-27 | 1991-01-26 | 1991-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-07-27 | 1995-01-26 | 1995-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-07-27 | 1999-01-26 | 1999-07-28 | $7700.00 | Window Closed / Lapsed |