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JPS6270401A - Production of carboxyalkylchitosan granule - Google Patents

Production of carboxyalkylchitosan granule

Info

Publication number
JPS6270401A
JPS6270401A JP60210731A JP21073185A JPS6270401A JP S6270401 A JPS6270401 A JP S6270401A JP 60210731 A JP60210731 A JP 60210731A JP 21073185 A JP21073185 A JP 21073185A JP S6270401 A JPS6270401 A JP S6270401A
Authority
JP
Japan
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Withdrawn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
JP60210731A
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
Application filed by Fuji Boseki Kk filed Critical Fuji Boseki Kk
Priority to JP60210731A priority Critical patent/JPS6354286B2/ja
Publication of JPS6270401A publication Critical patent/JPS6270401A/en
Publication of JPS6354286B2 publication Critical patent/JPS6354286B2/ja
Application status is Expired legal-status Critical

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
JP60210731A 1985-09-24 1985-09-24 Expired JPS6354286B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60210731A JPS6354286B2 (en) 1985-09-24 1985-09-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60210731A JPS6354286B2 (en) 1985-09-24 1985-09-24

Publications (2)

Publication Number Publication Date
JPS6270401A 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
JP60210731A 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
JPS6354286B2 (en) 1988-10-27

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Legal Events

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