US4096036A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the separation of water soluble polyols
Assignee: Standard Brands Inc
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Filing: 1977-04-07
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Granted: 1978-06-20
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Expires: 1997-04-07
Abstract
Abstract A method is disclosed for the separation of water soluble polyols. A solution containing the polyols is passed cyclically at different temperatures through a column containing ion exchange materials to separate the polyols.
Inventors
- 👤 Victor S. H. Liu
- 👤 Norman E. Lloyd
- 👤 Khaja Khaleeluddin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:02
CPC Classifications
C; C13; C13K; C13K13/00; C13K13/007; B; B01; B01J; B01J47/00; B01J47/014; C13K3/00
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
137 words
A method for the separation of polyol A and an uncharged water soluble substance in aqueous solution by thermal parametric pumping by the utilization of ion exchange materials which are characterized as complexing with polyol A at a first temperature and at least partially dissociating from polyol A at a second temperature comprising: (a) passing the solution containing polyol A and an uncharged water soluble substance into a column of said ion exchange material at the first temperature to form the polyol A ion exchange material complex, (b) withdrawing the solution from the column at the second temperature at which the polyol A ion exchange material complex is at least partially dissociated, and (c) collecting at least two effluent portions, one being enriched in polyol A and the other being enriched in the uncharged water soluble substance.
Claim 2
Independent Claim
137 words
A method for the separation of polyol A and an uncharged water soluble substance in aqueous solution by thermal parametric pumping by the utilization of ion exchange materials which are characterized as complexing with polyol A at a first temperature and at least partially dissociating from polyol A at a second temperature comprising: (a) passing the solution containing polyol A and an uncharged water soluble substance into a column of said ion exchange material at the first temperature to form the polyol A ion exchange material complex, (b) withdrawing the solution from the column at the second temperature at which the polyol A ion exchange material complex is at least partially dissociated, and (c) collecting at least two effluent portions, one being enriched in polyol A and the other being enriched in the uncharged water soluble substance.
Claim 3
Dependent Claim
18 words
A method of separation as defined in claim 1, wherein the uncharged water soluble substance is polyol B.
Claim 4
Dependent Claim
18 words
A method of separation defined in claim 2, wherein polyol A is fructose and polyol B is glucose.
Claim 5
Dependent Claim
46 words
A method of separation as defined in claim 3, wherein the ion exchange material is an ion exchange resin in the metal form selected from the group consisting of Ba 2+ , Ca 2+ , Sr 2+ , K + , La 3+ and mixtures thereof.
Claim 6
Dependent Claim
25 words
A method of separation as defined in claim 4, wherein the ion exchange material is an ion exchange resin in the Ca 2+ metal form.
Claim 7
Dependent Claim
33 words
A method for the separation of polyol A and polyol B as defined in claim 5, wherein heat energy is applied and removed from the column of ion exchange material by external means.
Claim 8
Dependent Claim
46 words
A method of separation as defined in claim 4, wherein fructose is complexed at a temperature in the range of from about 0° to about 25° C and the complex is dissociated at a temperature in the range of from about 40° to about 70° C.
Claim 9
Dependent Claim
54 words
A method of separation as defined in claim 4, wherein the glucose enriched effluent portion is passed through an enzyme reactor containing immobilized glucose isomerase to convert a portion of the glucose to fructose and the resulting solution cycled through the column of ion exchange material in accordance with steps (a) and (b) above.
Claim 10
Dependent Claim
31 words
A method for the separation of polyol A and polyol B as defined in claim 2, wherein the separation is performed in two or more parametric pump units connected in series.
Claim 11
Dependent Claim
32 words
A method for the separation of polyol A and polyol B as defined in claim 9, wherein feed solution is introduced and product is withdrawn from the system at a predetermined rate.
Claim 12
Dependent Claim
19 words
A method for separation as defined in claim 2, wherein polyol A is xylitol and polyol B is xylose.
Claim 13
Dependent Claim
36 words
A method for separation as defined in claim 1, wherein polyol A is selected from the group consisting of epi-inositol, allo-inositol, 1,2,3,4,5/0-cyclohexane pentols, D-talose, D-ribose, L-iditol, allitol, 5-0-methyl-D-ribose, D ribo-hex-3-ulose, D-glucose, D-fructose, D-psicose, D-xylulose, and xylitol.
References Cited (Backward Citations)
US3817787A
Cited
US3875140A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-19 | 1981-12-19 | 1982-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-19 | 1985-12-19 | 1986-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-19 | 1989-12-19 | 1990-06-20 | $7700.00 | Window Closed / Lapsed |