Title:
SEPARATING MATERIAL FOR GERMANIUM
Document Type and Number:
Japanese Patent JP2934839
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To produce a separating agent for germanium efficiently separating germanium from other metals or the like by bringing chitosan into reaction with 3-chloro-1,2-proganediol in the presence of alkali and cross-linking them with chloromethyloxysilane.
SOLUTION: Chitosan and 2-chloro-1,2-propanediol are brought into reaction with at about 50 to 80°C for about 4 to 24hr in the presence of sodium hydroxide in a solvent such as a mixture of methanol-dioxane or the like, and, into the amino groups of chitosan, 2,3-dihydroxypropyl groups as side chains. This chitosan derivatives and chloromethyloxysilane are brought into reaction with at about 50 to 80°C for about 4 to 7hr in an aq. soln. of sodium hydroxide and are cross-linked to produce a 1,2-propanediol denatured chitosan derivative cross-linked body. In this way, a new separating material for germanium capable of separating germanium at a high selecting rate from the other metals or semimetals can be obtd.
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Inventors:
INUKAI YOSHINARI
KAIDA YASUHIKO
YASUDA SEIJI
KAIDA YASUHIKO
YASUDA SEIJI
Application Number:
JP1461697A
Publication Date:
August 16, 1999
Filing Date:
January 10, 1997
Export Citation:
Assignee:
KOGYO GIJUTSU INCHO
International Classes:
C08B37/08; C01G17/00; C09K3/00; C22B41/00; (IPC1-7): C22B41/00; C08B37/08; C09K3/00
Domestic Patent References:
| JP62262743A | ||||
| JP3262531A | ||||
| JP4141533A | ||||
| JP4166236A | ||||
| JP762465A | ||||
| JP7112128A | ||||
| JP880435A | ||||
| JP1017953A |
Attorney, Agent or Firm:
Director, Kyushu Institute of Industrial Technology, AIST