Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Ion-exchange polymer or process of preparing
Patent
1997-03-03
1999-08-10
Zitomer, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Ion-exchange polymer or process of preparing
2101982, 210683, 521 25, 526307, 5263073, 526310, 526316, 526319, B01J 4112, B01J 4104, B01J 4106, C02F 142
Patent
active
059360038
ABSTRACT:
In accordance with the present invention, an improved anion-exchange chromatographic composition has been formed which comprises synthetic resin support particles and anion exchange compounds attached thereto, wherein the anion-exchange compounds comprise an internal reactive group, which may be an ester, ketone or amide group, and a terminal quaternary ammonium salt which functions as an anion-exchange site. The compositions of the present invention exhibit improved hydrolytic stability as compared to other known anion-exchange chromatographic compositions due to the presence of linkers which increase the number of atoms separating the internal reactive group from the nitrogen atom of the terminal ammonium anion-exchange site. Formed articles and methods employing the anion-exchange chromatographic composition are also provided.
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Jagodzinski Jacek
Pohl Christopher
Saini Charanijit
Brezner David J.
Dionex Corporation
Zitomer Fred
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