DE3527482A1 - Verfahren zum herstellen von koernigem poroesen chitosan - Google Patents
Verfahren zum herstellen von koernigem poroesen chitosanInfo
- Publication number
- DE3527482A1 DE3527482A1 DE19853527482 DE3527482A DE3527482A1 DE 3527482 A1 DE3527482 A1 DE 3527482A1 DE 19853527482 DE19853527482 DE 19853527482 DE 3527482 A DE3527482 A DE 3527482A DE 3527482 A1 DE3527482 A1 DE 3527482A1
- Authority
- DE
- Germany
- Prior art keywords
- chitosan
- solution
- water
- molecular weight
- porous
- 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.)
- Granted
Links
- 229920001661 Chitosan Polymers 0.000 title claims description 143
- 238000004519 manufacturing process Methods 0.000 title claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 53
- 239000000243 solution Substances 0.000 claims description 46
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 29
- -1 isocyanate compound Chemical class 0.000 claims description 21
- 239000002798 polar solvent Substances 0.000 claims description 20
- 239000003637 basic solution Substances 0.000 claims description 17
- 239000003929 acidic solution Substances 0.000 claims description 10
- 230000002378 acidificating effect Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 5
- 230000015271 coagulation Effects 0.000 claims description 5
- 238000005345 coagulation Methods 0.000 claims description 5
- 230000006855 networking Effects 0.000 claims description 5
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000012948 isocyanate Substances 0.000 claims description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims 1
- 235000010724 Wisteria floribunda Nutrition 0.000 claims 1
- 235000011114 ammonium hydroxide Nutrition 0.000 claims 1
- 239000010779 crude oil Substances 0.000 claims 1
- 229940045110 chitosan Drugs 0.000 description 127
- 239000011148 porous material Substances 0.000 description 30
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 24
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 24
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 21
- 239000002245 particle Substances 0.000 description 18
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 15
- 239000002904 solvent Substances 0.000 description 13
- 238000005406 washing Methods 0.000 description 13
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 10
- 238000004132 cross linking Methods 0.000 description 10
- 125000005442 diisocyanate group Chemical group 0.000 description 10
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 10
- 239000012798 spherical particle Substances 0.000 description 10
- 230000001112 coagulating effect Effects 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 7
- MSWZFWKMSRAUBD-IVMDWMLBSA-N glucosamine group Chemical group OC1[C@H](N)[C@@H](O)[C@H](O)[C@H](O1)CO MSWZFWKMSRAUBD-IVMDWMLBSA-N 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 239000002253 acid Substances 0.000 description 6
- JXTHNDFMNIQAHM-UHFFFAOYSA-N dichloroacetic acid Chemical compound OC(=O)C(Cl)Cl JXTHNDFMNIQAHM-UHFFFAOYSA-N 0.000 description 6
- 238000001035 drying Methods 0.000 description 6
- 239000002244 precipitate Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 4
- 229920002101 Chitin Polymers 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 235000019253 formic acid Nutrition 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 229960005215 dichloroacetic acid Drugs 0.000 description 3
- 239000003995 emulsifying agent Substances 0.000 description 3
- 238000004108 freeze drying Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 238000007654 immersion Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 238000003828 vacuum filtration Methods 0.000 description 2
- ALQLPWJFHRMHIU-UHFFFAOYSA-N 1,4-diisocyanatobenzene Chemical compound O=C=NC1=CC=C(N=C=O)C=C1 ALQLPWJFHRMHIU-UHFFFAOYSA-N 0.000 description 1
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 238000004438 BET method Methods 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- 241000238557 Decapoda Species 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 244000089409 Erythrina poeppigiana Species 0.000 description 1
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 1
- 108010093096 Immobilized Enzymes Proteins 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- 235000009776 Rathbunia alamosensis Nutrition 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000021736 acetylation Effects 0.000 description 1
- 238000006640 acetylation reaction Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 238000005349 anion exchange Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000011942 biocatalyst Substances 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- FLASNYPZGWUPSU-SICDJOISSA-N chitosan Chemical compound O([C@@H]1[C@@H](CO)O[C@H]([C@@H]([C@H]1O)N)O[C@@H]1[C@@H](CO)O[C@H]([C@@H]([C@H]1O)N)O[C@@H]1[C@@H](CO)O[C@H]([C@@H]([C@H]1O)N)O[C@@H]1[C@@H](CO)O[C@H]([C@@H]([C@H]1O)N)O[C@@H]1[C@@H](CO)O[C@H]([C@@H]([C@H]1O)N)O[C@H]1[C@H](O)[C@H]([C@@H](O[C@@H]1CO)O[C@@H]1[C@H](O[C@@H](O[C@@H]2[C@H](O[C@@H](O)[C@H](N)[C@H]2O)CO)[C@H](N)[C@H]1O)CO)NC(=O)OC)[C@@H]1O[C@H](CO)[C@@H](O)[C@H](O)[C@H]1N FLASNYPZGWUPSU-SICDJOISSA-N 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- AINBZKYUNWUTRE-UHFFFAOYSA-N ethanol;propan-2-ol Chemical compound CCO.CC(C)O AINBZKYUNWUTRE-UHFFFAOYSA-N 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate Chemical compound [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 229960001922 sodium perborate Drugs 0.000 description 1
- YKLJGMBLPUQQOI-UHFFFAOYSA-M sodium;oxidooxy(oxo)borane Chemical compound [Na+].[O-]OB=O YKLJGMBLPUQQOI-UHFFFAOYSA-M 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
- C08L5/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Engineering & Computer Science (AREA)
- Biochemistry (AREA)
- Materials Engineering (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16119284A JPS6140337A (ja) | 1984-07-31 | 1984-07-31 | 粒状多孔質キトサンの製造方法 |
| JP19807784A JPS6176504A (ja) | 1984-09-21 | 1984-09-21 | 粒状多孔質キトサンの製造法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE3527482A1 true DE3527482A1 (de) | 1986-02-06 |
| DE3527482C2 DE3527482C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1987-07-23 |
Family
ID=26487416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19853527482 Granted DE3527482A1 (de) | 1984-07-31 | 1985-07-31 | Verfahren zum herstellen von koernigem poroesen chitosan |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4833237A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
| DE (1) | DE3527482A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0345017A1 (en) * | 1988-05-30 | 1989-12-06 | Kurita Water Industries Ltd. | Method for preparing granular porous chitosan |
| EP0443027A4 (en) * | 1988-11-11 | 1991-10-16 | Kurita Water Industries Ltd. | Drug composition |
| WO1993012877A1 (en) * | 1991-12-20 | 1993-07-08 | Allied-Signal Inc. | Low density materials having high surface areas and articles formed therefrom for use in the recovery of metals |
| WO1994025494A1 (en) * | 1993-04-27 | 1994-11-10 | Alliedsignal Inc. | Rigid materials having high surface area and low density |
| US5502082A (en) * | 1991-12-20 | 1996-03-26 | Alliedsignal Inc. | Low density materials having good compression strength and articles formed therefrom |
| US5525710A (en) * | 1991-12-20 | 1996-06-11 | Alliedsignal Inc. | Highly porous chitosan bodies |
Families Citing this family (57)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5010181A (en) * | 1988-03-28 | 1991-04-23 | Coughlin Robert W | Partially treated shellfish waste for removal of heavy metals from aqueous solution |
| JPH08842B2 (ja) * | 1991-05-22 | 1996-01-10 | 信越化学工業株式会社 | 多糖類の精製方法 |
| JP3393560B2 (ja) * | 1993-12-29 | 2003-04-07 | 日本水産株式会社 | 水溶性キトサンを含有するカルシウム吸収促進性組成物およびカルシウム吸収促進用添加剤 |
| US5599916A (en) * | 1994-12-22 | 1997-02-04 | Kimberly-Clark Corporation | Chitosan salts having improved absorbent properties and process for the preparation thereof |
| US5602241A (en) * | 1995-03-14 | 1997-02-11 | Shin-Etsu Chemical Co., Ltd. | Method for purifying polysaccharides |
| DE19932075A1 (de) * | 1999-07-12 | 2001-01-18 | Cognis Deutschland Gmbh | Vernetzerfreie Zubereitungen |
| KR100375422B1 (ko) * | 1999-12-21 | 2003-03-10 | 한국과학기술연구원 | 다공성 키토산 구슬 및 그의 제조 방법 |
| KR20010000163A (en) | 2000-07-18 | 2001-01-05 | Ibeks Co Ltd | Chitosan microplate and preparing process thereof |
| US20070148770A1 (en) * | 2000-11-30 | 2007-06-28 | Korea Institute Of Science And Technology | Macroporous chitosan beads and preparation method thereof |
| US8741335B2 (en) | 2002-06-14 | 2014-06-03 | Hemcon Medical Technologies, Inc. | Hemostatic compositions, assemblies, systems, and methods employing particulate hemostatic agents formed from hydrophilic polymer foam such as Chitosan |
| KR100953466B1 (ko) | 2001-06-14 | 2010-04-16 | 프로비던스 헬스 시스템-오레곤 | 생명을 위협하는 심각한 출혈에 사용되는 상처 드레싱 제조방법 |
| US7371403B2 (en) * | 2002-06-14 | 2008-05-13 | Providence Health System-Oregon | Wound dressing and method for controlling severe, life-threatening bleeding |
| US20060004314A1 (en) * | 2001-06-14 | 2006-01-05 | Hemcon, Inc. | Antimicrobial barriers, systems, and methods formed from hydrophilic polymer structures such as chistosan |
| WO2003057736A1 (en) * | 2002-01-09 | 2003-07-17 | Abbott Laboratories De Costa Rica Ltd | Methods of producing modified microcrystalline chitosan and uses therefor |
| BE1014638A6 (fr) * | 2002-02-12 | 2004-02-03 | Univ Liege | Methode de preparation de derives de la paroi cellulaire a partir de biomasse. |
| US20070299034A1 (en) * | 2002-02-12 | 2007-12-27 | Marie-France Versali | Cell wall derivatives, their preparation process, and use thereof |
| US7131997B2 (en) | 2002-03-29 | 2006-11-07 | Scimed Life Systems, Inc. | Tissue treatment |
| US7094369B2 (en) * | 2002-03-29 | 2006-08-22 | Scimed Life Systems, Inc. | Processes for manufacturing polymeric microspheres |
| US7462366B2 (en) | 2002-03-29 | 2008-12-09 | Boston Scientific Scimed, Inc. | Drug delivery particle |
| US7053134B2 (en) | 2002-04-04 | 2006-05-30 | Scimed Life Systems, Inc. | Forming a chemically cross-linked particle of a desired shape and diameter |
| EP1511522B1 (en) | 2002-06-12 | 2011-08-10 | Boston Scientific Limited | Bulking agents |
| US20050137512A1 (en) * | 2003-12-23 | 2005-06-23 | Campbell Todd D. | Wound dressing and method for controlling severe, life-threatening bleeding |
| US8269058B2 (en) * | 2002-06-14 | 2012-09-18 | Hemcon Medical Technologies, Inc. | Absorbable tissue dressing assemblies, systems, and methods formed from hydrophilic polymer sponge structures such as chitosan |
| US7842377B2 (en) | 2003-08-08 | 2010-11-30 | Boston Scientific Scimed, Inc. | Porous polymeric particle comprising polyvinyl alcohol and having interior to surface porosity-gradient |
| US7449236B2 (en) | 2002-08-09 | 2008-11-11 | Boston Scientific Scimed, Inc. | Porous polymeric particle comprising polyvinyl alcohol and having interior to surface porosity-gradient |
| US8012454B2 (en) * | 2002-08-30 | 2011-09-06 | Boston Scientific Scimed, Inc. | Embolization |
| US7588825B2 (en) | 2002-10-23 | 2009-09-15 | Boston Scientific Scimed, Inc. | Embolic compositions |
| US7883490B2 (en) | 2002-10-23 | 2011-02-08 | Boston Scientific Scimed, Inc. | Mixing and delivery of therapeutic compositions |
| US7976823B2 (en) * | 2003-08-29 | 2011-07-12 | Boston Scientific Scimed, Inc. | Ferromagnetic particles and methods |
| US7901770B2 (en) * | 2003-11-04 | 2011-03-08 | Boston Scientific Scimed, Inc. | Embolic compositions |
| CN1898018A (zh) * | 2003-12-22 | 2007-01-17 | 昭和电工株式会社 | 结合有酞菁骨架的粒状多糖类聚合物 |
| US7736671B2 (en) | 2004-03-02 | 2010-06-15 | Boston Scientific Scimed, Inc. | Embolization |
| US8173176B2 (en) | 2004-03-30 | 2012-05-08 | Boston Scientific Scimed, Inc. | Embolization |
| US7311861B2 (en) * | 2004-06-01 | 2007-12-25 | Boston Scientific Scimed, Inc. | Embolization |
| US8425550B2 (en) * | 2004-12-01 | 2013-04-23 | Boston Scientific Scimed, Inc. | Embolic coils |
| US7858183B2 (en) | 2005-03-02 | 2010-12-28 | Boston Scientific Scimed, Inc. | Particles |
| US7727555B2 (en) | 2005-03-02 | 2010-06-01 | Boston Scientific Scimed, Inc. | Particles |
| US9204957B2 (en) * | 2005-03-17 | 2015-12-08 | Hemcon Medical Technologies, Inc. | Systems and methods for hemorrhage control and or tissue repair |
| US7963287B2 (en) | 2005-04-28 | 2011-06-21 | Boston Scientific Scimed, Inc. | Tissue-treatment methods |
| US9463426B2 (en) | 2005-06-24 | 2016-10-11 | Boston Scientific Scimed, Inc. | Methods and systems for coating particles |
| RU2313538C2 (ru) * | 2005-08-04 | 2007-12-27 | Борис Олегович Майер | Хитозановый продукт, способ его получения (варианты) |
| US8007509B2 (en) | 2005-10-12 | 2011-08-30 | Boston Scientific Scimed, Inc. | Coil assemblies, components and methods |
| US8152839B2 (en) | 2005-12-19 | 2012-04-10 | Boston Scientific Scimed, Inc. | Embolic coils |
| US8101197B2 (en) | 2005-12-19 | 2012-01-24 | Stryker Corporation | Forming coils |
| US7501179B2 (en) | 2005-12-21 | 2009-03-10 | Boston Scientific Scimed, Inc. | Block copolymer particles |
| US7947368B2 (en) | 2005-12-21 | 2011-05-24 | Boston Scientific Scimed, Inc. | Block copolymer particles |
| JP2009538192A (ja) | 2006-05-23 | 2009-11-05 | プロビデンス ヘルス システム−オレゴン ディー／ビー／エー プロビデンス セント ビンセント メディカル センター | 体の内腔または体の中空器官内に包帯構造を導入および適用するシステムおよび方法 |
| US8414927B2 (en) | 2006-11-03 | 2013-04-09 | Boston Scientific Scimed, Inc. | Cross-linked polymer particles |
| WO2009035414A1 (en) * | 2007-09-10 | 2009-03-19 | National University Of Singapore | Chitosan construct and method of preparing the same |
| EP2279012A4 (en) * | 2008-05-02 | 2013-05-29 | Providence Health Sys Oregon | WOUND ASSOCIATIONS AND PROCEDURES |
| EP2340002B1 (en) | 2008-10-06 | 2015-03-25 | Providence Health System - Oregon | Foam medical devices and methods |
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| CN111482147B (zh) * | 2019-01-25 | 2022-03-04 | 天津工业大学 | 一种低维材料的自组装气凝胶颗粒的连续制备方法及连续制备装置 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4309534A (en) * | 1979-02-15 | 1982-01-05 | University Of Delaware | Renatured chitosan and process of making same |
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| US2040880A (en) * | 1934-06-21 | 1936-05-19 | Du Pont | Process for the preparation of films and filaments and products thereof |
| US3879376A (en) * | 1971-05-10 | 1975-04-22 | Oreal | Chitosan derivative, method of making the same and cosmetic composition containing the same |
| US4308377A (en) * | 1978-12-29 | 1981-12-29 | Kureha Kagaku Kogyo Kabushiki Kaisha | Shaped material comprising denatured chitin and process for preparing same |
| JPS5616532A (en) * | 1979-07-20 | 1981-02-17 | Kureha Chem Ind Co Ltd | Production of formed porous article of chitin |
| JPS5643301A (en) * | 1979-09-18 | 1981-04-22 | Kureha Chem Ind Co Ltd | Chitinoid molding material |
| JPS5661401A (en) * | 1979-10-24 | 1981-05-26 | Kureha Chem Ind Co Ltd | Novel molding compound |
| JPS6020520B2 (ja) * | 1980-06-17 | 1985-05-22 | 工業技術院長 | 抄紙用バインダ−の製造方法 |
| JPS5930163B2 (ja) * | 1981-08-13 | 1984-07-25 | 工業技術院長 | Ｎ−アシル化キトサンの製造方法 |
| JPS5930722B2 (ja) * | 1981-09-30 | 1984-07-28 | 工業技術院長 | 粉粒状多孔質キトサンの製造方法 |
| US4532321A (en) * | 1982-06-14 | 1985-07-30 | University Of Delaware | Microcrystalline chitin and method of manufacture |
| US4659390A (en) * | 1982-07-26 | 1987-04-21 | General Foods Corporation | Method and manufacture for moisture-stable, inorganic, microporous saccharide salts |
| US4659700A (en) * | 1984-03-02 | 1987-04-21 | Johnson & Johnson Products, Inc. | Chitosan-glycerol-water gel |
| JPS60186504A (ja) * | 1984-03-07 | 1985-09-24 | Lion Corp | 低分子化キトサンの製造方法 |
| US4619995A (en) * | 1984-12-24 | 1986-10-28 | Nova Chem Limited | N,O-carboxymethyl chitosan and preparative method therefor |
| US4574150A (en) * | 1985-02-19 | 1986-03-04 | University Of Delaware | Dry free-flowing water-soluble complexes of chitosan |
| JPH06140303A (ja) * | 1992-10-23 | 1994-05-20 | Hitachi Ltd | 投影露光装置 |
-
1985
- 1985-07-31 DE DE19853527482 patent/DE3527482A1/de active Granted
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1987
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4309534A (en) * | 1979-02-15 | 1982-01-05 | University Of Delaware | Renatured chitosan and process of making same |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0345017A1 (en) * | 1988-05-30 | 1989-12-06 | Kurita Water Industries Ltd. | Method for preparing granular porous chitosan |
| US4975542A (en) * | 1988-05-30 | 1990-12-04 | Kurita Water Industries Ltd. | Method for preparing granular porous chitosan |
| EP0443027A4 (en) * | 1988-11-11 | 1991-10-16 | Kurita Water Industries Ltd. | Drug composition |
| WO1993012877A1 (en) * | 1991-12-20 | 1993-07-08 | Allied-Signal Inc. | Low density materials having high surface areas and articles formed therefrom for use in the recovery of metals |
| US5502082A (en) * | 1991-12-20 | 1996-03-26 | Alliedsignal Inc. | Low density materials having good compression strength and articles formed therefrom |
| US5525710A (en) * | 1991-12-20 | 1996-06-11 | Alliedsignal Inc. | Highly porous chitosan bodies |
| US5541234A (en) * | 1991-12-20 | 1996-07-30 | Alliedsignal Inc. | Process for making low density hydrogel materials having high surface areas |
| WO1994025494A1 (en) * | 1993-04-27 | 1994-11-10 | Alliedsignal Inc. | Rigid materials having high surface area and low density |
Also Published As
| Publication number | Publication date |
|---|---|
| US4833237A (en) | 1989-05-23 |
| DE3527482C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1987-07-23 |
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