DE3527482C2 - - Google Patents
Info
- Publication number
- DE3527482C2 DE3527482C2 DE3527482A DE3527482A DE3527482C2 DE 3527482 C2 DE3527482 C2 DE 3527482C2 DE 3527482 A DE3527482 A DE 3527482A DE 3527482 A DE3527482 A DE 3527482A DE 3527482 C2 DE3527482 C2 DE 3527482C2
- Authority
- DE
- Germany
- Prior art keywords
- chitosan
- solution
- water
- granular
- molecular weight
- 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.)
- Expired
Links
- 229920001661 Chitosan Polymers 0.000 claims description 149
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 53
- 239000000243 solution Substances 0.000 claims description 48
- 238000000034 method Methods 0.000 claims description 29
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 27
- -1 diisocyanate compound Chemical class 0.000 claims description 20
- 239000002798 polar solvent Substances 0.000 claims description 19
- 239000003637 basic solution Substances 0.000 claims description 17
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 10
- 239000003929 acidic solution Substances 0.000 claims description 10
- 238000004132 cross linking Methods 0.000 claims description 10
- 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 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 238000005345 coagulation Methods 0.000 claims description 8
- 230000015271 coagulation Effects 0.000 claims description 8
- 238000001556 precipitation Methods 0.000 claims description 5
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 claims description 4
- 229910021529 ammonia Inorganic materials 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims 1
- 235000011114 ammonium hydroxide Nutrition 0.000 claims 1
- JBJWASZNUJCEKT-UHFFFAOYSA-M sodium;hydroxide;hydrate Chemical compound O.[OH-].[Na+] JBJWASZNUJCEKT-UHFFFAOYSA-M 0.000 claims 1
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 27
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 24
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 21
- 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 19
- 239000002904 solvent Substances 0.000 description 13
- 239000011148 porous material Substances 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000005406 washing Methods 0.000 description 11
- 125000005442 diisocyanate group Chemical group 0.000 description 10
- 230000001112 coagulating effect Effects 0.000 description 9
- 239000000203 mixture Substances 0.000 description 9
- 230000002378 acidificating effect Effects 0.000 description 8
- 235000019441 ethanol Nutrition 0.000 description 8
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 8
- 239000000047 product Substances 0.000 description 8
- 239000012798 spherical particle Substances 0.000 description 8
- 238000003756 stirring Methods 0.000 description 8
- 239000005057 Hexamethylene diisocyanate Substances 0.000 description 7
- 239000007864 aqueous solution Substances 0.000 description 7
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 description 7
- 229920002101 Chitin Polymers 0.000 description 6
- JXTHNDFMNIQAHM-UHFFFAOYSA-N dichloroacetic acid Chemical compound OC(=O)C(Cl)Cl JXTHNDFMNIQAHM-UHFFFAOYSA-N 0.000 description 6
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 description 5
- 239000002253 acid Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000003287 optical effect Effects 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
- 238000009826 distribution Methods 0.000 description 4
- 235000019253 formic acid Nutrition 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 229960005215 dichloroacetic acid Drugs 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003995 emulsifying agent Substances 0.000 description 3
- 239000011888 foil Substances 0.000 description 3
- 238000004108 freeze drying Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Natural products C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- 239000004094 surface-active agent Substances 0.000 description 3
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000238557 Decapoda Species 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- LCTONWCANYUPML-UHFFFAOYSA-N Pyruvic acid Chemical compound CC(=O)C(O)=O LCTONWCANYUPML-UHFFFAOYSA-N 0.000 description 2
- 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
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000003431 cross linking reagent Substances 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- ZXHZWRZAWJVPIC-UHFFFAOYSA-N 1,2-diisocyanatonaphthalene Chemical compound C1=CC=CC2=C(N=C=O)C(N=C=O)=CC=C21 ZXHZWRZAWJVPIC-UHFFFAOYSA-N 0.000 description 1
- 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
- CDMDQYCEEKCBGR-UHFFFAOYSA-N 1,4-diisocyanatocyclohexane Chemical compound O=C=NC1CCC(N=C=O)CC1 CDMDQYCEEKCBGR-UHFFFAOYSA-N 0.000 description 1
- 238000004438 BET method Methods 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 102000004190 Enzymes Human genes 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
- 239000005058 Isophorone diisocyanate Substances 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 229920006101 Wellamid® Polymers 0.000 description 1
- 206010052428 Wound Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000012345 acetylating agent Substances 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
- 238000005349 anion exchange Methods 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000011942 biocatalyst Substances 0.000 description 1
- 229920001222 biopolymer Polymers 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- MGNCLNQXLYJVJD-UHFFFAOYSA-N cyanuric chloride Chemical compound ClC1=NC(Cl)=NC(Cl)=N1 MGNCLNQXLYJVJD-UHFFFAOYSA-N 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011049 filling 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
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 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
- 239000002244 precipitate Substances 0.000 description 1
- 229940107700 pyruvic acid Drugs 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
- 239000007858 starting material Substances 0.000 description 1
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000003828 vacuum filtration Methods 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)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Polymers & Plastics (AREA)
- Medicinal Chemistry (AREA)
- Molecular Biology (AREA)
- Materials Engineering (AREA)
- Biochemistry (AREA)
- Engineering & Computer Science (AREA)
- General Health & Medical Sciences (AREA)
- Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
- Polysaccharides And Polysaccharide Derivatives (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 DE3527482A1 (de) | 1986-02-06 |
| DE3527482C2 true 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) |
Families Citing this family (63)
| 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 |
| JPH0643447B2 (ja) * | 1988-05-30 | 1994-06-08 | 忠一 平山 | 粒状多孔質キトサンの製造方法 |
| JP2638156B2 (ja) * | 1988-11-11 | 1997-08-06 | 優樹 小田切 | 薬剤組成物 |
| 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 |
| EP0625070B1 (en) * | 1991-12-20 | 1998-07-08 | AlliedSignal Inc. | Low density materials having high surface areas and articles formed therefrom for use in the recovery of metals |
| US5525710A (en) * | 1991-12-20 | 1996-06-11 | Alliedsignal Inc. | Highly porous chitosan bodies |
| US5502082A (en) * | 1991-12-20 | 1996-03-26 | Alliedsignal Inc. | Low density materials having good compression strength and articles formed therefrom |
| US5328939A (en) * | 1993-04-27 | 1994-07-12 | Alliedsignal Inc. | Rigid materials having high surface area and low density |
| 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 |
| KR100315381B1 (ko) | 2000-07-18 | 2001-11-26 | 김영준 | 키토산 마이크로플레이크와 그 제조방법 |
| US20070148770A1 (en) * | 2000-11-30 | 2007-06-28 | Korea Institute Of Science And Technology | Macroporous chitosan beads and preparation method thereof |
| US7371403B2 (en) | 2002-06-14 | 2008-05-13 | Providence Health System-Oregon | Wound dressing and method for controlling severe, life-threatening bleeding |
| US7482503B2 (en) | 2001-06-14 | 2009-01-27 | 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 |
| 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 |
| US7482019B2 (en) * | 2002-01-09 | 2009-01-27 | Abbott Laboratories | Methods of producing modified microcrystalline chitosan and uses therefor |
| US20070299034A1 (en) * | 2002-02-12 | 2007-12-27 | Marie-France Versali | Cell wall derivatives, their preparation process, and use thereof |
| BE1014638A6 (fr) * | 2002-02-12 | 2004-02-03 | Univ Liege | Methode de preparation de derives de la paroi cellulaire a partir de biomasse. |
| US7094369B2 (en) | 2002-03-29 | 2006-08-22 | Scimed Life Systems, Inc. | Processes for manufacturing polymeric microspheres |
| US7131997B2 (en) | 2002-03-29 | 2006-11-07 | Scimed Life Systems, Inc. | Tissue treatment |
| 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 |
| WO2003105917A2 (en) | 2002-06-12 | 2003-12-24 | Scimed Life Systems, Inc. | Bulking agents |
| 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 |
| US20050137512A1 (en) * | 2003-12-23 | 2005-06-23 | Campbell Todd D. | Wound dressing and method for controlling severe, life-threatening bleeding |
| 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 |
| 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 |
| US8012454B2 (en) * | 2002-08-30 | 2011-09-06 | Boston Scientific Scimed, Inc. | Embolization |
| US7883490B2 (en) | 2002-10-23 | 2011-02-08 | Boston Scientific Scimed, Inc. | Mixing and delivery of therapeutic compositions |
| US7588825B2 (en) | 2002-10-23 | 2009-09-15 | Boston Scientific Scimed, Inc. | Embolic 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 |
| US20070149719A1 (en) * | 2003-12-22 | 2007-06-28 | Showa Denko K.K. | Granular polysaccharide polymer having phthalocyanine skeleton bonded thereto |
| 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 |
| US7727555B2 (en) | 2005-03-02 | 2010-06-01 | Boston Scientific Scimed, Inc. | Particles |
| US7858183B2 (en) | 2005-03-02 | 2010-12-28 | 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 |
| US8101197B2 (en) | 2005-12-19 | 2012-01-24 | Stryker Corporation | Forming coils |
| US8152839B2 (en) | 2005-12-19 | 2012-04-10 | Boston Scientific Scimed, Inc. | Embolic coils |
| US7947368B2 (en) | 2005-12-21 | 2011-05-24 | Boston Scientific Scimed, Inc. | Block copolymer particles |
| US7501179B2 (en) | 2005-12-21 | 2009-03-10 | Boston Scientific Scimed, Inc. | Block copolymer particles |
| CA2653175A1 (en) | 2006-05-23 | 2007-12-06 | Providence Health System-Oregon D/B/A Providence St. Vincent Medical Cen Ter | Systems and methods for introducing and applying a bandage structure within a body lumen or hollow body organ |
| 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 |
| CA2723172A1 (en) * | 2008-05-02 | 2009-11-05 | Providence Health System-Oregon D/B/A Providence St. Vincent Medical Cen Ter | Wound dressing devices and methods |
| US20110274726A1 (en) | 2008-10-06 | 2011-11-10 | Providence Health System - Oregon | Chitosan foam medical devices and methods |
| TWI386224B (zh) * | 2010-09-07 | 2013-02-21 | Univ Nat Chiao Tung | 可注射性智慧凝膠及其製備方法 |
| WO2014065772A1 (ru) * | 2012-10-23 | 2014-05-01 | Общество С Ограниченной Ответственностью "Научно-Поизводственное Предприятие "Биокомпозит" | Средство для лечения ран различной этиологии и способ его применения |
| CN103804712A (zh) * | 2014-01-23 | 2014-05-21 | 北京化工大学常州先进材料研究院 | 多孔及孔径可控的壳聚糖微球的制备 |
| CN105797697A (zh) * | 2016-05-24 | 2016-07-27 | 夏百庆 | 一种生物亲和高纯度色谱材料及其制备方法 |
| CN109012615A (zh) * | 2018-08-21 | 2018-12-18 | 武汉佰玛生物科技有限公司 | 一种w/o乳化制备壳聚糖/累托石复合多孔微球的方法 |
| 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 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| US4309534A (en) * | 1979-02-15 | 1982-01-05 | University Of Delaware | Renatured chitosan and process of making 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
-
1987
- 1987-02-05 US US07/011,150 patent/US4833237A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US4833237A (en) | 1989-05-23 |
| DE3527482A1 (de) | 1986-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE3527482C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | ||
| DE3852233T2 (de) | Multizellulare Zellulosepartikel und Verfahren zu ihrer Herstellung. | |
| DE69804256T2 (de) | Durchsichtiges Zellulosehydrogel und dessen Verwendung | |
| DE69026333T2 (de) | Methode zur Entfernung von Endotoxinen | |
| DE68910785T2 (de) | Membrane zum Trennen von flüssigen Wasser-Alkohol-Gemischen und Verfahren zu ihrer Herstellung. | |
| CH439756A (de) | Verfahren zur Herstellung von hydrophilen Polymeräthern in Form von Gelkörnern | |
| DE2225973C2 (de) | Verfahren zum Beschichten von nicht porösem Material mit einer porösen Siliciumdioxidschicht | |
| EP0817803A1 (de) | Verfahren zur aktivierung von polysacchariden, danach hergestellte polysaccharide und deren verwendung | |
| DE1418604A1 (de) | Gelbildende hochmolekulare Substanzen und Verfahren zu ihrer Herstellung | |
| DE4342442A1 (de) | Verfahren zur Herstellung von Level-off DP Cellulose | |
| DE3025094A1 (de) | Vernetzte cellulosesulfatester, deren herstellung und verwendung | |
| DE69220664T2 (de) | Kationische polysaccharide | |
| DE3823729A1 (de) | Verfahren zur herstellung eines harzes mit einem hohen wasserabsorptionsvermoegen | |
| DE68917992T2 (de) | Verfahren zur Herstellung von körnigem porösem Chitosan. | |
| DE3035084C2 (de) | Cellulosederivate und anorganische Säuren enthaltende fließfähige Mesophasen-Massen | |
| DE3872346T2 (de) | Ionenaustauscher aus basis von vernetztem glukomannan. | |
| DE2300497C2 (de) | Asymmetrische Celluloseester-Umkehrosmose-Membran und Verfahren zu ihrer Herstellung | |
| DD212969A1 (de) | Verfahren zur modifizierung von carboxymethylcellulose | |
| DE69432297T2 (de) | Verfahren zur herstellung einer mikrokapsel eines hydrophoben heilmittels | |
| DE69025088T2 (de) | Stabilisierter, synthetischer Zeolith sowie Verfahren zu dessen Herstellung | |
| DE3502329A1 (de) | Poroese, kugelfoermige celluloseacetat-teilchen und verfahren zu ihrer herstellung | |
| DE3688634T2 (de) | Feine Celluloseteilchen. | |
| DE19600163A1 (de) | Verfahren zur kontinuierlichen Herstellung von superabsorbierenden Polymerisaten aus PAN-Emulsionen | |
| DE2407018A1 (de) | Polyelektrolyt-verbundpolymeres aus polyvinylalkohol-derivaten, dessen herstellung und verwendung | |
| DE69528073T2 (de) | Polyolefinkatalysator mit grossem porenvolumen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8128 | New person/name/address of the agent |
Representative=s name: LIEDL, G., DIPL.-PHYS., PAT.-ANW., 8000 MUENCHEN |
|
| D2 | Grant after examination | ||
| 8364 | No opposition during term of opposition | ||
| 8328 | Change in the person/name/address of the agent |
Representative=s name: HANSMANN & VOGESER, 81369 MUENCHEN |
|
| 8339 | Ceased/non-payment of the annual fee |