AU7750094A - Process for preparing aqueous chitosan solutions and gels - Google Patents

Process for preparing aqueous chitosan solutions and gels

Info

Publication number
AU7750094A
AU7750094A AU77500/94A AU7750094A AU7750094A AU 7750094 A AU7750094 A AU 7750094A AU 77500/94 A AU77500/94 A AU 77500/94A AU 7750094 A AU7750094 A AU 7750094A AU 7750094 A AU7750094 A AU 7750094A
Authority
AU
Australia
Prior art keywords
gels
chitosan
solutions
preparing aqueous
chitosan solutions
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.)
Abandoned
Application number
AU77500/94A
Inventor
Not Given Name
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Merck Patent GmbH
Original Assignee
Merck Patent GmbH
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 Merck Patent GmbH filed Critical Merck Patent GmbH
Publication of AU7750094A publication Critical patent/AU7750094A/en
Abandoned legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
    • C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
    • C08J3/075—Macromolecular gels
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
    • C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
    • C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
    • C08B37/0024—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid beta-D-Glucans; (beta-1,3)-D-Glucans, e.g. paramylon, coriolan, sclerotan, pachyman, callose, scleroglucan, schizophyllan, laminaran, lentinan or curdlan; (beta-1,6)-D-Glucans, e.g. pustulan; (beta-1,4)-D-Glucans; (beta-1,3)(beta-1,4)-D-Glucans, e.g. lichenan; Derivatives thereof
    • C08B37/0027—2-Acetamido-2-deoxy-beta-glucans; Derivatives thereof
    • C08B37/003—Chitin, i.e. 2-acetamido-2-deoxy-(beta-1,4)-D-glucan or N-acetyl-beta-1,4-D-glucosamine; Chitosan, i.e. deacetylated product of chitin or (beta-1,4)-D-glucosamine; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2305/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00
    • C08J2305/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Medicinal Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Biochemistry (AREA)
  • Molecular Biology (AREA)
  • General Health & Medical Sciences (AREA)
  • Polysaccharides And Polysaccharide Derivatives (AREA)
  • Cosmetics (AREA)
  • Colloid Chemistry (AREA)
  • Medicinal Preparation (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Jellies, Jams, And Syrups (AREA)

Abstract

The invention relates to a process for the preparation of aqueous solutions and gels of chitosan in which chitosan and an acidic chelating agent are dissolved in water. Such solutions can be drastically increased in viscosity or converted into highly viscous gels by adding salts of polyvalent metals and acids in which chitosan is only moderately soluble or is insoluble. From such solutions, salt-like chitosan/chelating agent adducts can be obtained by removing water or by precipitation using an organic solvent.
AU77500/94A 1993-10-30 1994-10-26 Process for preparing aqueous chitosan solutions and gels Abandoned AU7750094A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4337152 1993-10-30
DE4337152A DE4337152A1 (en) 1993-10-30 1993-10-30 Process for the preparation of aqueous chitosan solutions and gels

Publications (1)

Publication Number Publication Date
AU7750094A true AU7750094A (en) 1995-05-18

Family

ID=6501460

Family Applications (1)

Application Number Title Priority Date Filing Date
AU77500/94A Abandoned AU7750094A (en) 1993-10-30 1994-10-26 Process for preparing aqueous chitosan solutions and gels

Country Status (15)

Country Link
EP (1) EP0650999B1 (en)
JP (1) JPH07188424A (en)
KR (1) KR950011474A (en)
CN (1) CN1106820A (en)
AT (1) ATE182344T1 (en)
AU (1) AU7750094A (en)
CA (1) CA2134635A1 (en)
CZ (1) CZ258694A3 (en)
DE (2) DE4337152A1 (en)
ES (1) ES2136688T3 (en)
HU (1) HUT73013A (en)
NO (1) NO944111L (en)
PL (1) PL305652A1 (en)
RU (1) RU94039534A (en)
ZA (1) ZA948523B (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0830381A4 (en) * 1995-06-09 2000-11-22 William N Drohan Chitin hydrogels, methods of their production and use
DE19714059A1 (en) 1997-04-05 1998-10-08 Wolff Walsrode Ag Thermoplastic material based on polysaccharides and a process for the production and use thereof
US6645947B1 (en) 1999-05-20 2003-11-11 Chitogenics, Inc. Adhesive N, O-carboxymethylchitosan coatings which inhibit attachment of substrate-dependent cells and proteins
EP1247819A1 (en) * 2001-04-04 2002-10-09 Dainichiseika Color & Chemicals Mfg. Co. Ltd. Purified chitins and production process thereof
KR20010106359A (en) * 2001-10-30 2001-11-29 조석형 Chelate compound for animals feed
US7265097B2 (en) 2002-08-20 2007-09-04 Chitogenics, Inc. Methods of drug delivery using sulphated chitinous polymers
CN101274099B (en) * 2007-03-27 2011-03-23 醒能生物制品开发股份有限公司 Method for preparing polymer matrix with transfer function
US8517979B2 (en) 2008-12-22 2013-08-27 Abbott Laboratories Carriers for hemostatic tract treatment
US8715719B2 (en) 2010-06-16 2014-05-06 Abbott Vascular, Inc. Stable chitosan hemostatic implant and methods of manufacture
JP2014533181A (en) 2011-11-13 2014-12-11 スネリス・インコーポレイテッド In situ crosslinkable polymer composition and method thereof
CN106170292A (en) 2014-02-04 2016-11-30 金珂生物医疗公司 Chitosan material from carbon acid solution
US10052291B2 (en) * 2014-06-10 2018-08-21 Dermtreat Aps Compositions comprising electrohydrodynamically obtained fibres for administration of specific doses of an active substance to skin or mucosa
WO2016164903A1 (en) 2015-04-10 2016-10-13 Hemcon Medical Technologies, Inc. Bioadhesive chitosan gel for controlling bleeding and for promoting healing with scar reduction without obscuring or interfering with access to a surgical field
CA2990589C (en) 2015-06-22 2023-10-10 Cresilon, Inc. Hemostatic adhesive polymer scaffold
ES2887977T3 (en) 2017-01-23 2021-12-29 Afyx Therapeutics As Method for the manufacture of a two-layer product based on electrospun fibers
RU2019126497A (en) 2017-01-23 2021-02-24 Афикс Терапьютикс А/С METHOD FOR PRODUCING ELECTRICALLY FIBERS WITH HIGH CONTENT OF BIOADHESIVE SUBSTANCE
CN110327221A (en) * 2019-04-16 2019-10-15 中国人民解放军第四军医大学 A kind of dentin collagen fiber demineralization material and the preparation method and application thereof
CN112480433A (en) * 2020-11-30 2021-03-12 东南大学成贤学院 Adhesive chitosan-alginate hydrogel and preparation and application methods thereof
CN113441513B (en) * 2021-05-25 2022-07-19 中国地质大学（武汉） Organic-inorganic composite material for stabilizing heavy metal waste residue and preparation method thereof
CN114957711B (en) * 2022-06-06 2024-06-21 中国医科大学附属盛京医院 Preparation method of chitosan solution and chitosan temperature-sensitive gel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2754796A1 (en) * 1977-12-09 1979-06-13 Wella Ag HAIR CONDITIONER AND HAIR DETERGENT
DE3600333C2 (en) * 1985-01-08 1996-03-28 Agency Ind Science Techn Membrane for the separation of liquids by evaporation
JPS61170376A (en) * 1985-01-24 1986-08-01 Kazuji Fukunaga Preservative for food
JPH0635359B2 (en) * 1988-03-17 1994-05-11 片倉チッカリン株式会社 Liquid fertilizer that suppresses the occurrence of plant diseases

Also Published As

Publication number Publication date
PL305652A1 (en) 1995-05-02
CZ258694A3 (en) 1995-06-14
KR950011474A (en) 1995-05-15
NO944111D0 (en) 1994-10-28
HU9403118D0 (en) 1995-01-30
ES2136688T3 (en) 1999-12-01
DE59408512D1 (en) 1999-08-26
EP0650999A1 (en) 1995-05-03
RU94039534A (en) 1996-08-20
DE4337152A1 (en) 1995-05-04
CA2134635A1 (en) 1995-05-01
JPH07188424A (en) 1995-07-25
CN1106820A (en) 1995-08-16
EP0650999B1 (en) 1999-07-21
NO944111L (en) 1995-05-02
ZA948523B (en) 1995-06-23
HUT73013A (en) 1996-06-28
ATE182344T1 (en) 1999-08-15

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