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US5116962A
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Material for affinity chromatography which is a sulfated polysaccharide bonded to an insoluble polymer
Assignee: Siemens Healthcare Diagnostics GmbH Germany
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Filing: 1990-07-16
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Granted: 1992-05-26
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Expires: 2010-07-16
Abstract
Abstract A process for the preparation of a material for affinity chromatography is described, in which a sulfated polysaccharide is bonded to a carrier material which has amino groups. For this purpose, a sulfated polysaccharide is treated with an oxidizing agent which oxidizes glycols to aldehydes, with cleavage of the carbon chain, and this modified sulfated polysaccharide is allowed to react with a carrier which has amino groups. It is possible using the described affinity material to adsorb proteins which bind to sulfated polysaccharides from solutions of these proteins and, where appropriate, then to desorb them, for example antithrombin III from blood plasma.
Inventors
- 👤 Werner Stuber
- 👤 Eric-Paul Paques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:46
CPC Classifications
B; B01; B01J; B01J20/00; B01J20/22; B01J20/26; B01J20/262; B01J20/264; B01J20/265; B01J20/281; B01J20/286; B01J20/30; B01J20/32; B01J20/3202; B01J20/3206; B01J20/3208; B01J20/3212; B01J20/3214; B01J20/3217; B01J20/3219; B01J20/3231; B01J20/3242; B01J20/3244; B01J20/3246; B01J20/3248; B01J20/3268; B01J20/3272; B01J20/3274; C; C07; C07K; C07K14/00; C07K14/81; C07K14/8107; C07K14/811; C07K14/8121; C07K14/8128; C08; C08B; C08B37/00; C08B37/006; C08B37/0063; C08B37/0075; B01J2220/00; B01J2220/50; B01J2220/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A sulfated polysaccharide bonded to an insoluble polymer prepared by a process which comprises treating a sulfated polysaccharide selected from the group consisting of heparin and its sodium salt with an alkali metal periodate which oxidizes glycols to aldehydes, thereby cleaving the carbon chain, and reacting the modified sulfated polysaccharide with an insoluble polymer containing amino groups selected from the group consisting of dextran resins, agarose resins and copolymers of methacrylic acid derivatives, pentaerythritol, polyethylene glycol and divinylbenzene.
Claim 2
Dependent Claim
78 words
A sulfated polysaccharide bonded to an insoluble polymer prepared by a process which comprises treating a sulfated polysaccharide selected from the group consisting of heparin and its sodium salt with an alkali metal periodate which oxidizes glycols to aldehydes, thereby cleaving the carbon chain, and reacting the modified sulfated polysaccharide with an insoluble polymer containing amino groups selected from the group consisting of dextran resins, agarose resins and copolymers of methacrylic acid derivatives, pentaerythritol, polyethylene glycol and divinylbenzene.
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) | 1995-05-26 | 1995-11-25 | 1996-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-26 | 1999-11-25 | 2000-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-26 | 2003-11-25 | 2004-05-26 | $7700.00 | Window Closed / Lapsed |