Porous polyacrylonitrile polymer beads and process

Details Porous polyacrylonitrile polymer beads and process Porous polyacrylonitrile polymer beads and process

B - Operations, Transporting

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B01J 20/28 (2006.01) B01J 20/26 (2006.01) B01J 20/30 (2006.01) C08J 3/12 (2006.01) C08J 9/28 (2006.01)

Patent

CA 2003450

30,669 POROUS POLYMER BEADS AND PROCESS ABSTRACT Isotropic porous polymer beads having a high surface porosity and large pore diameters from about 0.002 to about 5 microns are produced from solutions of an acrylonitrile polymer or a copolymer by a thermally-induced phase separation process. The use of mixed solvent-non-solvent combinations as solvents for the polymers, produces high pore content, substantially spherical beads having a morphology ideally suited to the chromatography of large molecules, such as proteins, and for enzyme-binding.

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