US4297293A
Expired / Lapsed
US
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Sodium alumoglucoheptonate and a process for its preparation
Assignee: Lek Pharmaceuticals dd
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Filing: 1980-02-06
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Granted: 1981-10-27
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Expires: 2000-02-06
Abstract
Abstract Sodium alumoglucoheptonate, process of preparing from sodium glucoheptonate and sodium aluminate, and use of sodium alumoglucoheptonate as a sequestering agent.
Inventors
- 👤 Peter Suhac
- 👤 Natasa Hafner-Milac
- 👤 Bozidar Dolenc
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:17
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/08; C02F5/10; C07; C07F; C07F5/00; C07F5/06; C07F5/069
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
64 words
Sodium alumoglucoheptonate of the general formula ##STR4## wherein Z represents a residue of the formula ##STR5## wherein R represents a residue of a molecule of sodium D-glycero-D-gulo-heptonate or of sodium D-glycero-D-ido-heptonate and R 1 and R 2 represent moieties of a molecule of sodium D-glycero-D-gulo-heptonate or of sodium D-glycero-D-ido-heptonate, Y represents a hydroxy group or three Y are joined to represent the residue Z.
Claim 2
Dependent Claim
64 words
Sodium alumoglucoheptonate of the general formula ##STR4## wherein Z represents a residue of the formula ##STR5## wherein R represents a residue of a molecule of sodium D-glycero-D-gulo-heptonate or of sodium D-glycero-D-ido-heptonate and R 1 and R 2 represent moieties of a molecule of sodium D-glycero-D-gulo-heptonate or of sodium D-glycero-D-ido-heptonate, Y represents a hydroxy group or three Y are joined to represent the residue Z.
Claim 3
Dependent Claim
50 words
A process for the preparation of sodium alumoglucoheptonate characterized in that a solution of sodium aluminate is added to the solution of sodium glucoheptonate in such a quantity that the ratio between the number of aluminum atoms and the number of sodium glucoheptonate molecules amounts to from 0.50:1 to 1.50:1.
Claim 4
Dependent Claim
50 words
A process for the preparation of sodium alumoglucoheptonate characterized in that a solution of sodium aluminate is added to the solution of sodium glucoheptonate in such a quantity that the ratio between the number of aluminum atoms and the number of sodium glucoheptonate molecules amounts to from 0.50:1 to 1.50:1.
Claim 5
Dependent Claim
27 words
A process according to claim 2, characterized in that the solution of sodium glucoheptonate, obtained as a by-product at the preparation of crystalline sodium D-glycero-D-gulo-heptonate, is used.
Claim 6
Dependent Claim
32 words
A process according to claim 2, characterized in that the solution of the epimeric mixture of sodium D-glycero-D-gulo-heptonate and sodium D-glycero-D-ido-heptonate, obtained by the reaction of sodium cyanide with glucose, is used.
Claim 7
Dependent Claim
15 words
The sodium alumoglucoheptonate of claim 1 wherein Z represents a residue of the formula: ##STR6##
Claim 8
Dependent Claim
15 words
The sodium alumoglucoheptonate of claim 1 wherein Z represents a residue of the formula: ##STR7##
Claim 9
Dependent Claim
17 words
The sodium alumoglucoheptonate of claim 1 or 6 or 7 wherein each Y represents a hydroxy group.
Claim 10
Dependent Claim
22 words
The sodium alumoglucoheptonate of claim 1 or 6 wherein three Y groups are joined to represent a residue of the formula: ##STR8##
Claim 11
Dependent Claim
24 words
The sodium alumoglucoheptonate of claim 1 or 6 or 7 wherein three Y groups are joined to represent a residue of the formula: ##STR9##
Claim 12
Dependent Claim
40 words
The process of claim 2 wherein the solution of sodium alumoglucoheptonate obtained is spray-dried at an inlet temperature of 180° to 200° C. and an outlet air temperature of 90° to 100° C. to recover sodium alumoglucoheptonate in powder form.
Claim 13
Dependent Claim
9 words
Sodium alumoglucoheptonate obtained by the process of claim 2.
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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) | 1984-10-26 | 1985-04-27 | 1985-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-26 | 1989-04-27 | 1989-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-26 | 1993-04-27 | 1993-10-27 | $7700.00 | Window Closed / Lapsed |