US4191812A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion exchange process involving emulsion ion exchange resins
Assignee: Rohm and Haas Co
•
Filing: 1978-09-19
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Granted: 1980-03-04
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Expires: 1998-09-19
Abstract
Abstract Ions are exchanged between emulsion ion exchange resins and conventional ion exchange resins during both batch and column contact. This process may be used to place the emulsion resin or the conventional resin in the desired ionic form.
Inventors
- 👤 Berni P. Chong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:10
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/10; B01J49/00; Y; Y10; Y10S; Y10S977/00; Y10S977/70; Y10S977/773; Y10S977/775; Y10S977/788; Y10S977/84; Y10S977/895; Y10S977/896
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
120 words
A process for changing the ionic form of a plurality of ion exchange resins of the same ion exchange type, at least one of the resins being in the physical form of approximately spherical, submicroscopic beads and initially being substantially in a first ionic form, and the balance of the resins being in the physical form of macrobeads and initially being in the second ionic form, which process comprises contacting the macrobeads in the second ionic form with an emulsion of the submicroscopic beads in the first ionic form until sufficient ion exchange occurs between the ions of the submicroscopic beads and the ions of the macrobeads to substantially change the ionic form of at least one of the resins.
Claim 2
Dependent Claim
120 words
A process for changing the ionic form of a plurality of ion exchange resins of the same ion exchange type, at least one of the resins being in the physical form of approximately spherical, submicroscopic beads and initially being substantially in a first ionic form, and the balance of the resins being in the physical form of macrobeads and initially being in the second ionic form, which process comprises contacting the macrobeads in the second ionic form with an emulsion of the submicroscopic beads in the first ionic form until sufficient ion exchange occurs between the ions of the submicroscopic beads and the ions of the macrobeads to substantially change the ionic form of at least one of the resins.
Claim 3
Dependent Claim
22 words
The process according to claim 1 wherein the submicroscopic beads have diameters in the range from about 0.01 to about 0.5 micrometers.
Claim 4
Dependent Claim
32 words
The process according to claim 1 wherein the emulsion contacts the macrobeads until the ion exchange has substantially reached equilibrium, and including the step of subsequently separating the emulsion from the macrobeads.
Claim 5
Dependent Claim
13 words
The process according to claim 3 wherein the ion exchange type is anionic.
Claim 6
Dependent Claim
13 words
The process according to claim 3 wherein the ion exchange type is cationic.
Claim 7
Dependent Claim
74 words
The process according to claim 5 wherein: (a) the submicroscopic beads are beads of weakly acidic, cationic resin, (b) the macrobeads are beads of strongly acidic, cationic resin, (c) the first ionic form is the metallic ion form, (d) the second ionic form is the hydrogen ion form, and (e) sufficient macrobeads are present to convert the submicroscopic beads of the emulsion from substantially the metallic ion form to substantially the hydrogen ion form.
Claim 8
Dependent Claim
23 words
The process according to claim 1 wherein the macrobeads form a bed, and the emulsion contacts the macrobeads by passing through the bed.
Claim 9
Dependent Claim
34 words
The process according to claim 7 wherein sufficient submicroscopic beads in the emulsion are passed through the bed to change the macrobeads from substantially the second ionic form to substantially the first ionic form.
Claim 10
Dependent Claim
13 words
The process according to claim 8 wherein the ion exchange type is cationic.
Claim 11
Dependent Claim
13 words
The process according to claim 9 wherein the ion exchange type is anionic.
Claim 12
Dependent Claim
43 words
The process according to claim 7 wherein the weight ratio of macrobeads to submicroscopic beads in the emulsion passing through the bed is sufficiently large that the submicroscopic beads are changed from substantially the first ionic form to substantially the second ionic form.
Claim 13
Dependent Claim
13 words
The process according to claim 11 wherein the ion exchange type is cationic.
Claim 14
Dependent Claim
13 words
The process according to claim 11 wherein the ion exchange type is anionic.
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) | 1983-03-04 | 1983-09-03 | 1984-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-04 | 1987-09-03 | 1988-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-04 | 1991-09-03 | 1992-03-04 | $7700.00 | Window Closed / Lapsed |