JPS6270401A - Production of carboxyalkylchitosan granule - Google Patents

Production of carboxyalkylchitosan granule

Info

Publication number
JPS6270401A
JPS6270401A JP21073185A JP21073185A JPS6270401A JP S6270401 A JPS6270401 A JP S6270401A JP 21073185 A JP21073185 A JP 21073185A JP 21073185 A JP21073185 A JP 21073185A JP S6270401 A JPS6270401 A JP S6270401A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
granules
chitosan
obtained
carboxyalkylchitosan
carboxyalkylchitin
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
JP21073185A
Other versions
JPS6354286B2 (en )
Inventor
Mitsunori Itoyama
Hiroaki Yabe
Original Assignee
Fuji Boseki Kk
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Abstract

PURPOSE: To obtain carboxyalkylchitosan granules having a desired particle diameter, by first molding low-MW chitosan as a starting material into granules of any desired particle diameter and subjecting them to a series of chemical treatments while retaining their shapes.
CONSTITUTION: Low-MW chitosan is dissolved in an aqueous acid solution, and this solution is dropped into a basic solution to form chitosan granules. The obtained chitosan granules are converted into regenerated chitin granules by N-acetylation and the obtained granules are treated with a crosslinking agent and the carboxylated, or alternately the above chitosan granules are first treated with a crosslinking agent and the converted into regenerated crosslinked chitin granules by N-acetylation, and these granules are carboxyalkylated. In this way, carboxyalkylchitin granules are formed. The obtained carboxyalkylchitin granules are deacetylated.
COPYRIGHT: (C)1987,JPO&Japio
JP21073185A 1985-09-24 1985-09-24 Expired JPS6354286B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21073185A JPS6354286B2 (en) 1985-09-24 1985-09-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21073185A JPS6354286B2 (en) 1985-09-24 1985-09-24

Publications (2)

Publication Number Publication Date
JPS6270401A true true JPS6270401A (en) 1987-03-31
JPS6354286B2 JPS6354286B2 (en) 1988-10-27

Family

ID=16594172

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21073185A Expired JPS6354286B2 (en) 1985-09-24 1985-09-24

Country Status (1)

Country Link
JP (1) JPS6354286B2 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992003480A1 (en) * 1990-08-17 1992-03-05 Drug Delivery System Institute, Ltd. N-acetylcarboxymethylchitosan derivative and production thereof
US5541234A (en) * 1991-12-20 1996-07-30 Alliedsignal Inc. Process for making low density hydrogel materials having high surface areas
WO1997041894A1 (en) * 1996-05-09 1997-11-13 Taisho Pharmaceutical Co., Ltd. Micellar aqueous composition and method for solubilizing hydrophobic drug
US6252003B1 (en) 1998-06-04 2001-06-26 Kao Corporation Polymer emulsion and process for producing the same
US6693188B2 (en) 2001-08-08 2004-02-17 Cargill Incorporated N-acetyl-D-glucosamine and process for producing N-acetyl-D-glucosamine
US6972284B2 (en) 2000-03-15 2005-12-06 Cargill, Incorporated Chitosan and method of preparing chitosan
US7488812B2 (en) 2002-04-02 2009-02-10 Cargill, Incorporated Chitosan production
US7816514B2 (en) 2001-02-16 2010-10-19 Cargill, Incorporated Glucosamine and method of making glucosamine from microbial biomass
US7923437B2 (en) 2001-02-16 2011-04-12 Cargill, Incorporated Water soluble β-glucan, glucosamine, and N-acetylglucosamine compositions and methods for making the same
US8222232B2 (en) 2001-02-16 2012-07-17 Cargill, Incorporated Glucosamine and N-acetylglucosamine compositions and methods of making the same fungal biomass

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55134646A (en) * 1979-04-06 1980-10-20 Kureha Chem Ind Co Ltd Amphoteric ion exchanger
JPS55167048A (en) * 1979-06-15 1980-12-26 Kureha Chem Ind Co Ltd Manufacture of spherical chitin molding
JPS5930163A (en) * 1982-08-10 1984-02-17 Yokogawa Hokushin Electric Corp Numbering circuit
JPS5930722A (en) * 1982-08-12 1984-02-18 Japan Storage Battery Co Ltd Manufacture of silver peroxide plate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55134646A (en) * 1979-04-06 1980-10-20 Kureha Chem Ind Co Ltd Amphoteric ion exchanger
JPS55167048A (en) * 1979-06-15 1980-12-26 Kureha Chem Ind Co Ltd Manufacture of spherical chitin molding
JPS5930163A (en) * 1982-08-10 1984-02-17 Yokogawa Hokushin Electric Corp Numbering circuit
JPS5930722A (en) * 1982-08-12 1984-02-18 Japan Storage Battery Co Ltd Manufacture of silver peroxide plate

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992003480A1 (en) * 1990-08-17 1992-03-05 Drug Delivery System Institute, Ltd. N-acetylcarboxymethylchitosan derivative and production thereof
US5541234A (en) * 1991-12-20 1996-07-30 Alliedsignal Inc. Process for making low density hydrogel materials having high surface areas
WO1997041894A1 (en) * 1996-05-09 1997-11-13 Taisho Pharmaceutical Co., Ltd. Micellar aqueous composition and method for solubilizing hydrophobic drug
US6252003B1 (en) 1998-06-04 2001-06-26 Kao Corporation Polymer emulsion and process for producing the same
US6359032B1 (en) 1998-06-04 2002-03-19 Kao Corporation Polymer emulsion and process for preparing the same
US7413881B2 (en) 2000-03-15 2008-08-19 Cargill, Incorporated Chitosan and method of preparing chitosan
US6972284B2 (en) 2000-03-15 2005-12-06 Cargill, Incorporated Chitosan and method of preparing chitosan
US7816514B2 (en) 2001-02-16 2010-10-19 Cargill, Incorporated Glucosamine and method of making glucosamine from microbial biomass
US7923437B2 (en) 2001-02-16 2011-04-12 Cargill, Incorporated Water soluble β-glucan, glucosamine, and N-acetylglucosamine compositions and methods for making the same
US8034925B2 (en) 2001-02-16 2011-10-11 Cargill, Incorporated Glucosamine and method of making glucosamine from microbial biomass
US8222232B2 (en) 2001-02-16 2012-07-17 Cargill, Incorporated Glucosamine and N-acetylglucosamine compositions and methods of making the same fungal biomass
US6693188B2 (en) 2001-08-08 2004-02-17 Cargill Incorporated N-acetyl-D-glucosamine and process for producing N-acetyl-D-glucosamine
US7488812B2 (en) 2002-04-02 2009-02-10 Cargill, Incorporated Chitosan production

Also Published As

Publication number Publication date Type
JPS6354286B2 (en) 1988-10-27 grant

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees