Porous polymer beads and process

Details Porous polymer beads and process Porous polymer beads and process

1991-08-29

1994-05-24

Kight, III, John

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 56, 521 60, 521 841, 521 89, 521142, 521143, 521144, 521147, 521149, 428402, 428409, 528491, C08J 928

Patent

active

053149238

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 a 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:
patent: 4094848 (1978-06-01), Naito
patent: 4100149 (1978-07-01), Meiller
patent: 4425237 (1984-01-01), Abe
patent: 4582860 (1986-04-01), Bigwood et al.
patent: 4623706 (1986-11-01), Timm et al.
patent: 4693985 (1987-09-01), Deger et al.
patent: 4940734 (1990-07-01), Ley et al.
patent: 5047437 (1991-09-01), Cooke et al.

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