ZA948523B - Process for preparing aqueous chitosan solutions and gels - Google Patents

Process for preparing aqueous chitosan solutions and gels

Info

Publication number: ZA948523B
Authority: ZA; South Africa
Prior art keywords: gels; chitosan; solutions; preparing aqueous; chitosan solutions
Prior art date: 1993-10-30

Application number

ZA948523A

Other languages

English (en)

Inventor

Berthold Nies

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.)

1993-10-30

Filing date

1994-10-28

Publication date

1995-06-23

1994-10-28 Application filed by Merck Patent Gmbh filed Critical Merck Patent Gmbh

1995-06-23 Publication of ZA948523B publication Critical patent/ZA948523B/xx

Links

229920001661 Chitosan Polymers 0.000 title abstract 5
239000000499 gel Substances 0.000 title abstract 3
238000004519 manufacturing process Methods 0.000 title 1
239000002738 chelating agent Substances 0.000 abstract 2
239000000243 solution Substances 0.000 abstract 2
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
239000002253 acid Substances 0.000 abstract 1
230000002378 acidificating effect Effects 0.000 abstract 1
150000007513 acids Chemical class 0.000 abstract 1
239000007864 aqueous solution Substances 0.000 abstract 1
239000002184 metal Substances 0.000 abstract 1
229910052751 metal Inorganic materials 0.000 abstract 1
150000002739 metals Chemical class 0.000 abstract 1
238000000034 method Methods 0.000 abstract 1
239000003960 organic solvent Substances 0.000 abstract 1
238000001556 precipitation Methods 0.000 abstract 1
238000002360 preparation method Methods 0.000 abstract 1
150000003839 salts Chemical class 0.000 abstract 1

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)
Dispersion Chemistry (AREA)
Chemical Kinetics & Catalysis (AREA)
Medicinal Chemistry (AREA)
Polymers & Plastics (AREA)
Organic Chemistry (AREA)
Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Molecular Biology (AREA)
General Health & Medical Sciences (AREA)
Biochemistry (AREA)
Materials Engineering (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)

ZA948523A 1993-10-30 1994-10-28 Process for preparing aqueous chitosan solutions and gels ZA948523B (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
DE4337152A DE4337152A1 (de)	1993-10-30	1993-10-30	Verfahren zur Herstellung von wäßrigen Chitosan-Lösungen und -Gelen

Publications (1)

Publication Number	Publication Date
ZA948523B true ZA948523B (en)	1995-06-23

Family

ID=6501460

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
ZA948523A ZA948523B (en)	1993-10-30	1994-10-28	Process for preparing aqueous chitosan solutions and gels

Country Status (15)

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

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CA2224253A1 (en) *	1995-06-09	1996-12-27	Martin J. Macphee	Chitin hydrogels, methods of their production and use
DE19714059A1 (de)	1997-04-05	1998-10-08	Wolff Walsrode Ag	Thermoplastischer Werkstoff auf der Basis von Polysacchariden sowie ein Verfahren zu dessen Herstellung und Verwendung desselben
US6645947B1 (en)	1999-05-20	2003-11-11	Chitogenics, Inc.	Adhesive N, O-carboxymethylchitosan coatings which inhibit attachment of substrate-dependent cells and proteins
TW583190B (en) *	2001-04-04	2004-04-11	Dainichiseika Color Chem	Purified chitins and production process thereof
KR20010106359A (ko) *	2001-10-30	2001-11-29	조석형	가축사료용 킬레이트 화합물
US7265097B2 (en)	2002-08-20	2007-09-04	Chitogenics, Inc.	Methods of drug delivery using sulphated chitinous polymers
CN101274099B (zh) *	2007-03-27	2011-03-23	醒能生物制品开发股份有限公司	具传递作用的高分子基质的制备方法
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
IN2014CN03524A (cs)	2011-11-13	2015-10-09	Suneris Inc
WO2015120085A1 (en) *	2014-02-04	2015-08-13	Hemcon Medical Technologies, Inc.	Chitosan materials from carbonic acid solution
CA2950821C (en) *	2014-06-10	2024-02-06	Dermtreat Aps	Compositions comprising electrohydrodynamically obtained fibres for administration of specific dosages 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
CN107708750A (zh)	2015-06-22	2018-02-16	克里斯伦公司	高度有效的止血粘附性聚合物支架
BR112019014732A2 (pt)	2017-01-23	2020-03-10	Afyx Therapeutics A/S	Método para a preparação de fibras eletrofiadas com um alto teor de uma substância bioadesiva
RU2019125715A (ru)	2017-01-23	2021-02-24	Афикс Терапьютикс А/С	Способ изготовления двухслойного продукта на основе электроспряденных волокон
CN110327221A (zh) *	2019-04-16	2019-10-15	中国人民解放军第四军医大学	一种牙本质胶原纤维脱矿材料及其制备方法与应用
EP3977959B1 (de)	2020-09-30	2024-07-31	Ivoclar Vivadent AG	Verfahren zur herstellung eines dentalen formkörpers
CN112480433A (zh) *	2020-11-30	2021-03-12	东南大学成贤学院	一种粘性壳聚糖-海藻酸盐水凝胶及其制备和应用方法
CN113441513B (zh) *	2021-05-25	2022-07-19	中国地质大学（武汉）	一种稳定化处理重金属废渣的有机-无机复合材料及其制备方法
CN114957711B (zh) *	2022-06-06	2024-06-21	中国医科大学附属盛京医院	一种壳聚糖溶液及壳聚糖温敏凝胶的制备方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE2754796A1 (de) *	1977-12-09	1979-06-13	Wella Ag	Haarkur- und haarwaschmittel
DE3600333C2 (de) *	1985-01-08	1996-03-28	Agency Ind Science Techn	Membran für die Trennung von Flüssigkeiten durch Verdunstung
JPS61170376A (ja) *	1985-01-24	1986-08-01	Kazuji Fukunaga	食品の保存剤
JPH0635359B2 (ja) *	1988-03-17	1994-05-11	片倉チッカリン株式会社	植物病害の発生を抑制する液体肥料

1993
- 1993-10-30 DE DE4337152A patent/DE4337152A1/de not_active Withdrawn
1994
- 1994-09-19 DE DE59408512T patent/DE59408512D1/de not_active Expired - Fee Related
- 1994-09-19 EP EP94114697A patent/EP0650999B1/de not_active Expired - Lifetime
- 1994-09-19 AT AT94114697T patent/ATE182344T1/de not_active IP Right Cessation
- 1994-09-19 ES ES94114697T patent/ES2136688T3/es not_active Expired - Lifetime
- 1994-10-20 CZ CZ942586A patent/CZ258694A3/cs unknown
- 1994-10-24 KR KR1019940027112A patent/KR950011474A/ko not_active Withdrawn
- 1994-10-26 AU AU77500/94A patent/AU7750094A/en not_active Abandoned
- 1994-10-27 JP JP6263691A patent/JPH07188424A/ja active Pending
- 1994-10-27 CN CN94117615A patent/CN1106820A/zh active Pending
- 1994-10-28 HU HU9403118A patent/HUT73013A/hu unknown
- 1994-10-28 NO NO944111A patent/NO944111L/no unknown
- 1994-10-28 ZA ZA948523A patent/ZA948523B/xx unknown
- 1994-10-28 CA CA002134635A patent/CA2134635A1/en not_active Abandoned
- 1994-10-28 PL PL94305652A patent/PL305652A1/xx unknown
- 1994-10-28 RU RU94039534/04A patent/RU94039534A/ru unknown

Also Published As

Publication number	Publication date
AU7750094A (en)	1995-05-18
JPH07188424A (ja)	1995-07-25
ES2136688T3 (es)	1999-12-01
RU94039534A (ru)	1996-08-20
NO944111L (no)	1995-05-02
HU9403118D0 (en)	1995-01-30
CA2134635A1 (en)	1995-05-01
DE59408512D1 (de)	1999-08-26
CN1106820A (zh)	1995-08-16
ATE182344T1 (de)	1999-08-15
PL305652A1 (en)	1995-05-02
EP0650999B1 (de)	1999-07-21
NO944111D0 (no)	1994-10-28
KR950011474A (ko)	1995-05-15
HUT73013A (en)	1996-06-28
CZ258694A3 (en)	1995-06-14
DE4337152A1 (de)	1995-05-04
EP0650999A1 (de)	1995-05-03

Publication	Publication Date	Title
ZA948523B (en)	1995-06-23	Process for preparing aqueous chitosan solutions and gels
IE870248L (en)	1987-07-31	Pseudoplastic acidic compositions
FI912689A0 (fi)	1991-06-04	Foerfarande foer foerbaettring av foertjockningsmedel foer vattenhaltiga system.
EP0745438A3 (en)	1999-02-24	Process for removing heavy metals from soil
ATE65251T1 (de)	1991-08-15	Verfahren zur herstellung von bariumsulfat mit chemoreaktiver oberflaeche.
MX166370B (es)	1993-01-04	Eliminador de adherencia de melamina-formaldehido con bajo contenido de formaldehido libre y metodo para usarse
ATE48987T1 (de)	1990-01-15	Verfahren fuer die beseitigung von metallen aus wasser.
DE3775080D1 (de)	1992-01-23	Verfahren zur herstellung von epsilon-caprolactam.
ES2056703T3 (es)	1994-10-01	Sustituto de la saliva.
ATE115653T1 (de)	1994-12-15	Zweistufiges chemisches bzw elektrochemisches verfahren zur beschichtung von magnesium.
DE3775235D1 (de)	1992-01-30	Verfahren zur herstellung von epsilon-caprolactam.
DK319381A (da)	1982-01-17	Fremgangsmaade til fremstilling af ferrihydroxid-dextran-komplekser
NO910386L (no)	1991-08-06	Fremgangsmaate til ekstraksjon av tallium.
BR8703747A (pt)	1988-03-29	Processo de producao de composicao aquosa espessada
ATE69177T1 (de)	1991-11-15	Verfahren zur rueckgewinnung von rhodium aus rhodiumkomplex-verbindungen enthaltenden waessrigen loesungen.
OA06592A (fr)	1981-08-31	Procédé d'extraction liquide - liquide de métaux en solution aqueuse au moyen de dérivés organophosphorés.
ATE238324T1 (de)	2003-05-15	Verfahren zur herstellung von polyguluronsäuren
AU629079B2 (en)	1992-09-24	Process for the preparation of organic phosphites which are stable to hydrolysis
EP1065199A3 (en)	2003-11-05	"Process for the recovery of strong acids from aqueous solution"
DE68901913D1 (de)	1992-07-30	Verfahren zur industriellen herstellung von natriumparahydroxymandelat.
DE3764337D1 (de)	1990-09-20	Verfahren fuer die wasserbehandlung.
KR830009108A (ko)	1983-12-17	페니실란산 1,1-디옥사이드의 수난용성 염의 제조방법
TW249221B (en)	1995-06-11	Recycle process for acid and alkaline waste liquid of copper etching
DE68904629D1 (de)	1993-03-11	Verfahren zur gewinnung von ethylenamin.
SE8205619L (sv)	1983-04-03	Forfarande for framstellning av arseniksyrlighet