US5061767A
Expired / Lapsed
US
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Hydrophilic-hydrophobic polymer composites and membranes
Assignee: State University of New York at Albany
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Filing: 1990-04-05
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Granted: 1991-10-29
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Expires: 2010-04-05
Abstract
Abstract A polymer composite, a method of making a polymer composite and a polymer composite membrane. The polymer composite comprises a uniform dispersion of hydrophobic polymeric particles in a continuous phase of a hydrophilic polymer. The new method of forming a polymer composite includes the formation of a concentrated emulsion of a hydrophilic monomer and a hydrophobic monomer and heating the concentrated emulsion at a predetermined temperature. The polymer composites of this invention may be useful as permselective membranes.
Inventors
- 👤 Eli Ruckenstein
- 👤 Jun S. Park
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:25
CPC Classifications
B; B01; B01D; B01D67/00; B01D67/0002; B01D67/0006; B01D69/00; B01D69/14; B01D69/141; B01D69/1411; B01D71/00; B01D71/06; B01D71/28; B01D71/281; C; C08; C08F; C08F2/00; C08F2/12; C08F2/16; C08F2/22; B01D2323/00; B01D2323/08; B01D2323/081; B01D2325/00; B01D2325/36; B01D2325/38
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
86 words
A method for making a hydrophilic-hydrophobic polymer composite comprising a dispersion of particles of one kind of polymer in a continuous phase of another polymer, which comprises the steps of: a. forming a concentrated emulsion of a hydrophobic monomer and a hydrophilic monomer, the continuous phase of said concentrated emulsion comprising a surfactant and an initiator and the dispersed phase comprising an initiator, wherein the volume fraction of the dispersed phase is greater than about 0.74; and b. heating said concentrated emulsion at a predetermined temperature.
Claim 2
Independent Claim
86 words
A method for making a hydrophilic-hydrophobic polymer composite comprising a dispersion of particles of one kind of polymer in a continuous phase of another polymer, which comprises the steps of: a. forming a concentrated emulsion of a hydrophobic monomer and a hydrophilic monomer, the continuous phase of said concentrated emulsion comprising a surfactant and an initiator and the dispersed phase comprising an initiator, wherein the volume fraction of the dispersed phase is greater than about 0.74; and b. heating said concentrated emulsion at a predetermined temperature.
Claim 3
Dependent Claim
33 words
The method as recited in claim 1 wherein the hydrophobic monomer is a component of the continuous phase and the hydrophilic monomer is a component of the dispersed phase of the concentrated emulsion.
Claim 4
Dependent Claim
33 words
The method as recited in claim 1 wherein the hydrophobic monomer is a component of the continuous phase and the hydrophobic monomer is a component of a dispersed phase of the concentrated emulsion.
Claim 5
Dependent Claim
27 words
The method as recited in claim 1 wherein the hydrophobic monomer is selected from the group consisting of styrene, methylmethacrylate, d-methylstyrene, 1,3-butadiene, vinyl chloride and vinyl ester.
Claim 6
Dependent Claim
13 words
The method as recited in claim 1 wherein the hydrophobic monomer is styrene.
Claim 7
Dependent Claim
13 words
The method as recited in claim 2 wherein the hydrophobic monomer is styrene.
Claim 8
Dependent Claim
13 words
The method as recited in claim 5 wherein the hydrophobic monomer is styrene.
Claim 9
Dependent Claim
27 words
The method as recited in claim 1 wherein the hydrophilic monomer is selected from the group consisting of acrylamide, vinylacetate, styrene sulfonic acid salt, acrylonitrile, and N-vinylpyrrolidone.
Claim 10
Dependent Claim
13 words
The method as recited in claim 1 wherein the hydrophilic monomer is acrylamide.
Claim 11
Dependent Claim
13 words
The method as recited in claim 2 wherein the hydrophilic monomer is acrylamide.
Claim 12
Dependent Claim
13 words
The method as recited in claim 3 wherein the hydrophilic monomer is acrylamide.
Claim 13
Dependent Claim
13 words
The method as recited in claim 5 wherein the hydrophilic monomer is acrylamide.
Claim 14
Dependent Claim
24 words
The method as recited in claim 1 wherein the volume fraction of the dispersed phase is greater than about 0.74 up to about 0.995.
Claim 15
Dependent Claim
20 words
The method as recited in claim 18 wherein the volume fraction of the dispersed phase is greater than about 0.74.
Claim 16
Independent Claim
21 words
The method as recited in claim wherein the volume fraction of the dispersed phase is about 0.85 up to about 0.95.
Claim 17
Dependent Claim
13 words
The method as recited in claim 1 wherein the surfactant is sodium dodecylsulfate.
Claim 18
Dependent Claim
13 words
The method as recited in claim 12 wherein the surfactant is sodium dodecylsulfate.
Claim 19
Dependent Claim
21 words
The method as recited in claim 1 wherein the hydrophobic monomer is dissolved in a solution of a higher aliphatic hydrocarbon.
Claim 20
Dependent Claim
21 words
The method as recited in claim 12 wherein the hydrophobic monomer is dissolved in a solution of a higher aliphatic hydrocarbon.
Claim 21
Dependent Claim
21 words
The method as recited in claim 17 wherein the hydrophobic monomer is dissolved in a solution of a higher aliphatic hydrocarbon.
Claim 22
Dependent Claim
21 words
The method as recited in claim 18 wherein the higher aliphatic hydrocarbon is an aliphatic having at least 6 carbon atoms.
Claim 23
Dependent Claim
14 words
The method as recited in claim 13 wherein the higher aliphatic hydrocarbon is decane.
Claim 24
Dependent Claim
18 words
The method as recited in claim 1 wherein the hydrophilic monomer is dissolved in a solution of water.
Claim 25
Dependent Claim
18 words
The method as recited in claim 12 wherein the hydrophilic monomer is dissolved in a solution of water.
Claim 26
Dependent Claim
18 words
The method as recited in claim 17 wherein the hydrophilic monomer is dissolved in a solution of water.
Claim 27
Dependent Claim
18 words
The method as recited in claim 21 wherein the hydrophilic monomer is dissolved in a solution of water.
Claim 28
Dependent Claim
15 words
The method as recited in claim 1 wherein the initiators are AIBN and sodium persulfate.
Claim 29
Dependent Claim
15 words
The method as recited in claim 17 wherein the initiators are AIBN and sodium persulfate.
Claim 30
Dependent Claim
15 words
The method as recited in claim 21 wherein the initiators are AIBN and sodium persulfate.
Claim 31
Dependent Claim
23 words
The method as recited in claim 1 wherein the heating is at a temperature of between about 30° C. to about 70° C.
Claim 32
Dependent Claim
23 words
The method as recited in claim 29 wherein the heating is at a temperature of between about 30° C. to about 70° C.
Claim 33
Dependent Claim
18 words
The method as recited in claim 1 wherein the heating is at a temperature of about 40° C.
Claim 34
Dependent Claim
18 words
The method as recited in claim 1 wherein the heating is at a temperature of about 40° C.
Claim 35
Dependent Claim
17 words
The method as recited in claim 1 wherein the concentrated emulsion is prepared at about room temperature.
Claim 36
Independent Claim
78 words
The method of making a permselective polymer composite membrane comprising the steps of: a. forming a concentrated emulsion of a hydrophobic monomer and a hydrophilic monomer, the continuous phase of said concentrated emulsion comprising a surfactant and an initiator and the dispersed phase comprising an initiator wherein the volume fraction of the dispersed phase is greater than about 0.74; b. forming a thin layer of the concentrated emulsion; and c. heating the thin layer at a predetermined temperature.
Claim 37
Independent Claim
78 words
The method of making a permselective polymer composite membrane comprising the steps of: a. forming a concentrated emulsion of a hydrophobic monomer and a hydrophilic monomer, the continuous phase of said concentrated emulsion comprising a surfactant and an initiator and the dispersed phase comprising an initiator wherein the volume fraction of the dispersed phase is greater than about 0.74; b. forming a thin layer of the concentrated emulsion; and c. heating the thin layer at a predetermined temperature.
References Cited (Backward Citations)
US3931128A
Cited
US4739008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-10-28 | 1995-04-29 | 1995-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-10-28 | 1999-04-29 | 1999-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-10-28 | 2003-04-29 | 2003-10-29 | $7700.00 | Window Closed / Lapsed |