Porous polyacrylonitrile beads and process for their production

Details Porous polyacrylonitrile beads and process for their production Porous polyacrylonitrile beads and process for their production

1988-11-23

1991-09-10

Hoke, Veronica P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521 60, 521 64, 521 841, 521 89, 521142, 530413, C08J 928

Patent

active

050474375

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.

REFERENCES:
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patent: 4094848 (1978-06-01), Naito
patent: 4110529 (1978-08-01), Stoy
patent: 4247498 (1981-01-01), Castro
patent: 4486549 (1984-12-01), Matsumoto et al.
patent: 4519909 (1985-05-01), Castro
patent: 4594207 (1986-06-01), Josefiak et al.
patent: 4666607 (1987-05-01), Josefiak et al.

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