Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Patent
1987-07-08
1989-11-21
Kight, John
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
536126, A61K 2902, C09K 300
Patent
active
048824267
ABSTRACT:
Beads product of Glucomannan having a cross-linked structure and exhibiting a degree of swelling of in the range from 1.5 to 15, an exclusion limit molecular weight in the range from 200 to 100,000,000 and an average bead diameter in the range from 1 to 500 .mu.m. The glucomannan beads are useful for packing material for gel filtration and for gel chromatography. They can be produced by a process which comprises preparing a starting process solution by dissolving an esterified glucomannan solely or together with a diluent in a solvent, introducing this starting process solution into an aqueous medium so as to cause formation of liquid droplets of the starting process solution suspended in said aqueous medium, evaporating off the solvent contained in the liquid droplets to leave spherical beads of the glucomannan ester, saponifying the so formed beads of glucomannan ester to convert into beads of glucomannan and effecting then cross linking of the saponified beads by reacting with a cross linking solvent.
REFERENCES:
patent: 3265631 (1966-08-01), Jordan
patent: 4115536 (1978-09-01), Rothman et al.
patent: 4124705 (1978-11-01), Rothman et al.
patent: 4514309 (1985-04-01), Wadhwa
Journal of Chromatography, vol. 355, No. 2, Mar. 21st, 1986, pp. 434-437, Elsevier Science Publishers B.V., Amsterdam, NL; Y. Motozato et al, "Preparation and gel permeation chromatographic properties of pullulan spheres".
Polymer Preprints, Japan, vol. 36, No. 3, 1987, p. 876; Y. Motozato et al, "Macroporous glucomannan spheres for the size separation of aqueous macromolecules".
Patent Abstracts of Japan, vol. 6, No. 139 (C-116)[1017], Jul. 28th, 1982; & JP-A-57 63303 (Yoshiaki Motozato) 16-04-1982.
Patent Abstracts of Japan, vol. 6, No. 180 (C-125)[1058], Sep. 14th 1982; & JP-A-57 98506 (Yoshiaki Motozato) 18-06-1982.
Kight John
Kurita Water Industries Ltd.
Nutter Nathan M.
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