Title:
CELLULOSE-BASED CARRIER AND ITS PREPARATION
Document Type and Number:
Japanese Patent JP3941980
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a cellulose-based carrier with a large particle size which brings about a perfusion effect even on a liquid fed at a relatively low linear velocity by contacting a suspension of small porous cellulose-based particles in an alkaline solution with an acid solution.
SOLUTION: A suspension is contacted with an acid solution to link together small cellulose-based particles so that a space is formed among the small cellulose-based particles thereby forming a cellulose-based carrier comprising cellulose-based particle aggregates. Preferably, the pH of an alkaline solution is 13 or higher, the concentration of the small cellulosebased particles in the suspension is 50-75 vol. % and the pH of the acid solution is 1 or below. The average diameter of the cellulose-based particle aggregates is preferably such that the ratio thereof to the average diameter of small cellulose-based particles is less than 50. The average diameter of the cellulose-based particle aggregates is preferably 20×10-6 to 3×10-3 m in usual.
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Inventors:
Kosuke Fujita
Application Number:
JP23776197A
Publication Date:
July 11, 2007
Filing Date:
August 18, 1997
Export Citation:
Assignee:
Kaneka Corporation
International Classes:
C08B16/00; (IPC1-7): C08B16/00
Domestic Patent References:
| JP10298202A |
Attorney, Agent or Firm:
Yasuo Yasutomi
Shinya Furuya
Shinya Furuya