Patent US4591388A successfully refreshed from Google Patents.
US4591388A
Expired / Lapsed
US
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Separation of arabinose by selective adsorption on zeolitic molecular sieves
Assignee: Katalistiks International Inc
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Filing: 1985-05-06
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Granted: 1986-05-27
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Expires: 2005-05-06
Abstract
Abstract A process for the separation of arabinose is disclosed which comprises the selective adsorption of same on BaX zeolitic molecular sieves. The process is especially useful for separating arabinose from mixtures of sugars containing arabinose.
Inventors
- 👤 Chien C. Chao
- 👤 John D. Sherman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:55
CPC Classifications
C; C13; C13K; C13K13/00; C13K13/007
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
93 words
A selective adsorption process for the separation of L-arabinose from a liquid mixture containing L-arabinose and at least one other aldose which process comprises: (a) contacting said liquid mixture, at a pressure sufficient to maintain liquid phase for the liquid mixture, with an adsorbent composition comprising a BaX crystalline aluminosilicate zeolite, whereby L-arabinose is selectively adsorbed thereon; (b) removing the non-adsorbed portion of said liquid mixture from contact with the adsorbent composition; and (c) desorbing L-arabinose from said adsorbent composition by contacting said adsorbent composition with a desorbing agent and recovering desorbed L-arabinose.
Claim 2
Dependent Claim
93 words
A selective adsorption process for the separation of L-arabinose from a liquid mixture containing L-arabinose and at least one other aldose which process comprises: (a) contacting said liquid mixture, at a pressure sufficient to maintain liquid phase for the liquid mixture, with an adsorbent composition comprising a BaX crystalline aluminosilicate zeolite, whereby L-arabinose is selectively adsorbed thereon; (b) removing the non-adsorbed portion of said liquid mixture from contact with the adsorbent composition; and (c) desorbing L-arabinose from said adsorbent composition by contacting said adsorbent composition with a desorbing agent and recovering desorbed L-arabinose.
Claim 3
Dependent Claim
19 words
A process in accordance with claim 1 wherein the temperature is from about 4° C. to about 150° C.
Claim 4
Dependent Claim
19 words
A process in accordance with claim 1 wherein the temperature is from about 20° C. to about 110° C.
Claim 5
Dependent Claim
25 words
A process in accordance with claim 1 wherein the desorbent is selected from the group consisting of water and mixtures thereof with alcohols or ketones.
Claim 6
Dependent Claim
12 words
A process in accordance with claim 1 wherein the desorbent is water.
Claim 7
Dependent Claim
15 words
A process in accordance with claim 1 wherein said mixture comprises a mixture of sugars.
Claim 8
Dependent Claim
26 words
A process in accordance with claim 6 wherein said sugar mixture contains arabinose and at least one of galactose, sucrose, glucose, fructose, mannose, xylose and cellobiose.
Claim 9
Dependent Claim
21 words
A process in accordance with claim 1 wherein said mixture comprises a mixture of sugars derived from the hydrolysis of wood.
Claim 10
Dependent Claim
17 words
A process in accordance with claim 1 wherein said mixture comprises the hydrolysis product of beet pulp.
Claim 11
Dependent Claim
16 words
A process in accordance with claim 1 wherein said mixture comprises the hydrolysis product of L-arabinose-D-galactan.
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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) | 1989-05-26 | 1989-11-25 | 1990-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-26 | 1993-11-25 | 1994-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-26 | 1997-11-25 | 1998-05-27 | $7700.00 | Window Closed / Lapsed |