Stock material or miscellaneous articles – Coated or structually defined flake – particle – cell – strand,... – Particulate matter
Patent
1988-08-08
1990-10-16
Lieberman, Allan M.
Stock material or miscellaneous articles
Coated or structually defined flake, particle, cell, strand,...
Particulate matter
428404, 428407, 428447, B32B 2312, B32B 2502, B32B 2704, B32B 2714
Patent
active
049634364
ABSTRACT:
A particulate porous material suitable for use as a high surface area column packing material comprises particles substantially all of which are not smaller than 5 micrometers and not larger than 1 millimeter in diameter, and each particle is in the form of a substantially cellular body and consists predominantly of an open, three-dimensional matrix of crystal of mullite which define between them interconnecting pores having a width in the range of from 5 nanometers to about 2 micrometers. The particles can be coated with a reactive layer. There is also disclosed a process for producing the particulate porous material wherein a particulate product comprising particles substantially all of which are between 5 micrometers and 1 millimeter in diameter and consisting predominantly of a mixture of mullite crystals and silica is treated with a concentrated aqueous solution of an alkali metal hydroxide at a temperature of at least 50.degree. C.; and the treated particulate product is then washed, dewatered and dried. The particulate porous material may be used as a packing material for a chromatographic or ion exchange column, or for performing biochemical separations, and is particularly useful for immobilizing biological components such as biological macromolecules or biological cells.
REFERENCES:
patent: 2536122 (1951-01-01), Beriorelli et al.
patent: 3951677 (1976-04-01), Jacobson et al.
patent: 4389385 (1983-06-01), Ramsay
patent: 4415631 (1983-11-01), Schotijser
patent: 4517241 (1985-05-01), Alfert
Chem. Abstracts, 98, No. 14, Apr. 1983, p. 143, No. 109877r.
Gould Caryl
Jones Thomas R.
ECC International Limited
Lieberman Allan M.
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