Butadiene acrylonitrile polymeric coating for chromatographic pa

Details Butadiene acrylonitrile polymeric coating for chromatographic pa Butadiene acrylonitrile polymeric coating for chromatographic pa

1991-03-04

1992-12-01

Garvin, Patrick P.

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210656, 2101982, 2105021, 502402, 502157, B01D 1508

Patent

active

051678225

ABSTRACT:
A method of separating organic materials is disclosed utilizing a chromatographic packing material. This packing material includes a coated support material which is a chromatographically suitable substrate. An immobilized butadiene acrylonitrile polymer coating is provided on the substrate. The copolymer can be crosslinked by gamma radiation, or by means of a crosslinking agent such as dicumyl peroxide. The support material can be silica, alumina, diatomaceous earth, zeolite, porous glass or carbon, but preferably is spherical lamellar shaped crystals of aluminum hydroxide. The aluminum hydroxide crystals are bonded together at a central core and extend radially outward from a central core with a particle density ranging from 0.3 to 2.5 g/cm.sup.3 and a diameter of 2 to 150 microns.

REFERENCES:
patent: 4045353 (1977-08-01), Kosaka
patent: 4675384 (1987-06-01), Dromard et al.
patent: 4786628 (1988-11-01), Wieserman
patent: 4822593 (1989-04-01), Wilhelma
patent: 4913935 (1990-04-01), Lin

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