PRODUCTION OF CARBOXY POLYSACCHARIDE

PROBLEM TO BE SOLVED: To effectively isolate transition metal from the reaction mixture in the production of carboxy polysaccharide by using a combination of a transition metal and an oxidizer. SOLUTION: In the production of carboxy polysaccharide by oxidizing polysaccharide with a combination of a...

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Hauptverfasser:	KANZAKI TOSHIAKI, NAGASHIMA HIROMITSU, WAKABAYASHI HIDECHIKA
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS COMPOSITIONS BASED THEREON DERIVATIVES THEREOF GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLYSACCHARIDES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To effectively isolate transition metal from the reaction mixture in the production of carboxy polysaccharide by using a combination of a transition metal and an oxidizer. SOLUTION: In the production of carboxy polysaccharide by oxidizing polysaccharide with a combination of a transition metal compound and an oxidizer, the reaction mixture after the oxidization is adjusted its pH to 1-6 before an inorganic carrier is used to adsorb and immobilize the transition metal whereby the transition metal is removed from the reaction mixture. In a preferred embodiment, the inorganic carrier is selected from the group consisting of zinc oxide, magnesium oxide, manganese oxide, samarium oxide, antimony oxide, silica- alumina, ceria-titania, zinc hydroxide and zirconium hydroxide.