The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 21, 1989
Filed:
Jul. 08, 1987
Yoshiaki Motozato, Kumamoto, JP;
Kurita Water Industries, Ltd., Tokyo, JP;
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.