KR100217205B1 - Process for preparing plaster for disinfecting a wound - Google Patents
Process for preparing plaster for disinfecting a wound Download PDFInfo
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- KR100217205B1 KR100217205B1 KR1019970013113A KR19970013113A KR100217205B1 KR 100217205 B1 KR100217205 B1 KR 100217205B1 KR 1019970013113 A KR1019970013113 A KR 1019970013113A KR 19970013113 A KR19970013113 A KR 19970013113A KR 100217205 B1 KR100217205 B1 KR 100217205B1
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- South Korea
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- chitin
- chitosan
- prepared
- plaster
- oligomer
- Prior art date
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- 239000011505 plaster Substances 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 230000000249 desinfective effect Effects 0.000 title abstract description 3
- 229920002101 Chitin Polymers 0.000 claims abstract description 35
- 229920001661 Chitosan Polymers 0.000 claims abstract description 34
- 229920000742 Cotton Polymers 0.000 claims abstract description 11
- 239000004744 fabric Substances 0.000 claims abstract description 11
- 239000002904 solvent Substances 0.000 claims abstract description 10
- 239000002390 adhesive tape Substances 0.000 claims abstract description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- 239000000243 solution Substances 0.000 claims description 10
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 claims description 9
- 238000006116 polymerization reaction Methods 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- JXTHNDFMNIQAHM-UHFFFAOYSA-N dichloroacetic acid Chemical compound OC(=O)C(Cl)Cl JXTHNDFMNIQAHM-UHFFFAOYSA-N 0.000 claims description 4
- YNJBWRMUSHSURL-UHFFFAOYSA-N trichloroacetic acid Chemical compound OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 0.000 claims description 3
- 239000004215 Carbon black (E152) Substances 0.000 claims description 2
- 238000006640 acetylation reaction Methods 0.000 claims description 2
- 230000006196 deacetylation Effects 0.000 claims description 2
- 238000003381 deacetylation reaction Methods 0.000 claims description 2
- 229960005215 dichloroacetic acid Drugs 0.000 claims description 2
- 229930195733 hydrocarbon Natural products 0.000 claims description 2
- 150000002430 hydrocarbons Chemical class 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- 239000002253 acid Substances 0.000 claims 1
- 229920002678 cellulose Polymers 0.000 claims 1
- 239000001913 cellulose Substances 0.000 claims 1
- 230000007062 hydrolysis Effects 0.000 claims 1
- 238000006460 hydrolysis reaction Methods 0.000 claims 1
- 239000004745 nonwoven fabric Substances 0.000 claims 1
- 239000007858 starting material Substances 0.000 claims 1
- 229920001542 oligosaccharide Polymers 0.000 abstract description 18
- 150000002482 oligosaccharides Chemical class 0.000 abstract description 18
- -1 oligomers thereof Polymers 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 2
- 239000012153 distilled water Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 230000000843 anti-fungal effect Effects 0.000 description 3
- 230000003301 hydrolyzing effect Effects 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 230000000845 anti-microbial effect Effects 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 229960004319 trichloroacetic acid Drugs 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 241000238366 Cephalopoda Species 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000000844 anti-bacterial effect Effects 0.000 description 1
- 210000000988 bone and bone Anatomy 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000834 fixative Substances 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 239000012567 medical material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L15/00—Chemical aspects of, or use of materials for, bandages, dressings or absorbent pads
- A61L15/16—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons
- A61L15/22—Bandages, dressings or absorbent pads for physiological fluids such as urine or blood, e.g. sanitary towels, tampons containing macromolecular materials
- A61L15/28—Polysaccharides or their derivatives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F13/00—Bandages or dressings; Absorbent pads
- A61F13/02—Adhesive bandages or dressings
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K9/00—Medicinal preparations characterised by special physical form
- A61K9/70—Web, sheet or filament bases ; Films; Fibres of the matrix type containing drug
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/20—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices containing or releasing organic materials
- A61L2300/23—Carbohydrates
- A61L2300/232—Monosaccharides, disaccharides, polysaccharides, lipopolysaccharides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/40—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a specific therapeutic activity or mode of action
- A61L2300/404—Biocides, antimicrobial agents, antiseptic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L2300/00—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
- A61L2300/60—Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices characterised by a special physical form
- A61L2300/64—Animal cells
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Veterinary Medicine (AREA)
- Engineering & Computer Science (AREA)
- Public Health (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- Chemical & Material Sciences (AREA)
- Epidemiology (AREA)
- Medicinal Chemistry (AREA)
- Pharmacology & Pharmacy (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Hematology (AREA)
- Materials Engineering (AREA)
- Materials For Medical Uses (AREA)
- Medicinal Preparation (AREA)
Abstract
본 발명은 상처 소독용 플라스터의 제조방법에 관한 것이다.The present invention relates to a method for producing a plaster for wound disinfection.
본 발명은 키토산, 키틴, 이들의 올리고머 또는 이들의 올리고당을 적합한 용매에 0.1% 내지 3%로 용해시켜 면직물에 침적시키고 중화, 세척, 건조하여 꺼즈를 제조하고, 제조된 꺼즈를 접착 테이프에 부착하여 플라스터를 제조하는 방법이다.The present invention is prepared by dissolving chitosan, chitin, oligomers thereof, or oligosaccharides thereof in a suitable solvent in 0.1% to 3% by immersing in cotton fabric, neutralized, washed, dried to attach the prepared to the adhesive tape It is a method for producing a plaster.
이와 같은 방법으로 제조된 플라스터는 상처를 소독하여 보호하는 효과를 갖는다.Plaster produced in this way has the effect of disinfecting and protecting the wound.
Description
본 발명은 상처 소독용 플라스터의 제조방법에 관한 것이고, 더욱 상세하게는 신체에 상처가 생겼을때 상처를 소독하여 보호하도록 꺼즈에 키토산, 키틴, 이들의 올리고머 또는 이들의 올리고당을 처리한 플라스터의 제조방법에 관한 것이다.The present invention relates to a method for producing a plaster for wound disinfection, and more particularly, a method for preparing a plaster treated with chitosan, chitin, oligomers thereof or oligosaccharides in red to disinfect and protect the wound when a wound occurs in the body. It is about.
최근에, 자연계에 광범위하게 존재하는 천연다당이지만 오랜기간 동안 이용되지 않은 키틴, 키토산을 응집제, 이온 교환제, 효소 고정화제, 의약품, 의용재료 등에 이용하고자 하는 많은 연구가 이루어지고 있다.Recently, many studies have been conducted to use chitin and chitosan, which are natural polysaccharides widely present in nature but have not been used for a long time, for flocculants, ion exchangers, enzyme fixatives, pharmaceuticals, and medical materials.
이와 같은 연구를 통해, 키토산 및 키틴에 항균성, 항곰팡이성이 있다는 것이 밝혀졌다.These studies have shown that chitosan and chitin have antimicrobial and antifungal properties.
이에 본 발명은 항균성, 항곰팡이성을 갖는 키토산 및 키틴을 이용하여 상처를 소독하여 보호하는 플라스터의 제조방법을 제공하는 것을 목적으로 한다.Accordingly, an object of the present invention is to provide a method for preparing a plaster that protects a wound by using chitosan and chitin having antimicrobial and antifungal properties.
본 발명은 키토산, 키틴, 이들의 올리고머 또는 이들의 올리고당을 적합한 용매에 0.1% 내지 3%로 용해시켜 면직물에 침적시키고, 중화, 세척, 건조하여 꺼즈를 제조하고, 제조된 꺼즈를 접착 테이프에 부착하여 플라스터를 제조하는 방법이다.The present invention dissolves chitosan, chitin, oligomers thereof or oligosaccharides thereof in a suitable solvent at 0.1% to 3%, soaks in cotton fabric, neutralizes, washes and dries to prepare reds, and attaches the prepared reds to the adhesive tape. To produce a plaster.
이하, 본 발명을 더욱 상세히 설명하면 다음과 같다.Hereinafter, the present invention will be described in more detail.
본 발명은 키토산, 키틴, 이들의 올리고머 또는 이들의 올리고당을 적합한 용매에 0.1 내지 3%로 용해시켜 면직물에 침적시키고 중화, 세척, 건조하여 꺼즈를 제조하고, 제조된 꺼즈를 접착 테이프에 부착하여 플라스터를 제조하는 방법으로서, 이와 같이 제조된 플라스터는 상처를 소독하는 효과를 갖는다.The present invention is prepared by dissolving chitosan, chitin, oligomers thereof, or oligosaccharides thereof in a suitable solvent in 0.1 to 3%, immersed in cotton fabric, neutralized, washed, and dried to prepare redds, and attaching the prepared todose to an adhesive tape As a method for producing the plaster thus prepared has the effect of disinfecting the wound.
본 발명에서 사용된 키토산 및 키틴은 오징어뼈나 게껍질에서 추출하거나 시판품을 그대로 사용한다.Chitosan and chitin used in the present invention is extracted from squid bone or crab shell or use a commercially available product.
상기의 키토산은 중합도가 300 내지 25000인 것을 사용하고, 키틴은 300 내지 30000의 중합도를 갖는 것을 사용하는 것이 바람직하다.It is preferable to use the thing whose polymerization degree is 300-25000 as said chitosan, and the thing which has a polymerization degree of 300-30000 as chitin.
또한, 키토산 및 키틴의 올리고머 또는 이들의 올리고당을 제조하는 방법은 하기와 같다.In addition, a method for producing oligomers of chitosan and chitin or oligosaccharides thereof is as follows.
키토산 올리고머는 키틴을 농염산으로 가수분해하여 탈아세틸화도가 50 내지 96%이고, 중합도가 20 내지 25000정도인 것으로 제조한다.The chitosan oligomer is prepared by hydrolyzing chitin with concentrated hydrochloric acid to have a degree of deacetylation of 50 to 96% and a degree of polymerization of about 20 to 25000.
키틴 올리고머는 키틴을 농염산으로 가수분해하여 중합도 20 내지 300정도로 제조된 키토산을 무수아세트산으로 N-아세틸화하여 제조한다.The chitin oligomer is prepared by hydrolyzing chitin with concentrated hydrochloric acid to N-acetylate chitosan prepared with a degree of polymerization of 20 to 300 with acetic anhydride.
키토산 올리고당 또는 키틴 올리고당은 키토산 또는 키틴을 5N 내지 9N의 농염산으로 50내지 100℃에서 4 내지 24시간 가수분해하여 중합도가 1 내지 20 정도로 제조한다.Chitosan oligosaccharides or chitin oligosaccharides are prepared by hydrolyzing chitosan or chitin with 5 N to 9 N concentrated hydrochloric acid at 50 to 100 ° C. for 4 to 24 hours.
상기의 키틴, 키토산, 이들의 올리고머, 및 이들의 올리고당의 중합도는 세포접촉 투과성에 영향을 미치기 때문에 상기 각각의 범위를 벗어나는 경우에는 효과가 감소된다.Since the degree of polymerization of chitin, chitosan, oligomers thereof, and oligosaccharides thereof affects cell contact permeability, the effect is reduced when the respective ranges are exceeded.
또한, 상기에서 키토산, 키틴, 이들의 올리고머, 또는 이들의 올리고당을 적합한 용매에 0.1 내지 3%로 용해시키는 경우 적합한 용매로는 다음과 같은 것이 사용된다.In addition, in the case of dissolving chitosan, chitin, oligomers thereof, or oligosaccharides thereof in 0.1 to 3% in a suitable solvent, the following solvents are used.
키틴 또는 키틴의 올리고머의 경우에는 용매로서 트리클로로초산 또는 디클로로초산과 클로로화 탄화수소 혼합용액을 사용하여 키틴 또는 키틴의 올리고머를 0.1 내지 3%로 용해시키고, 이 용액에 면직물을 담그어 처리한 후 이 처리된 면직물을 약알칼리성 용액으로 중화하고, 다시 증류수로 세척하여 풍건함으로서 꺼즈를 제조한다.In the case of chitin or oligomer of chitin, the chitin or chitin oligomer is dissolved in 0.1 to 3% using a mixed solution of trichloroacetic acid or dichloroacetic acid and chlorolated hydrocarbon as a solvent, and the cotton fabric is immersed in this solution, followed by treatment. The cotton fabric is neutralized with a weak alkaline solution, washed again with distilled water, and air dried to prepare redds.
키토산 또는 키토산 올리고머의 경우에는 용매로서 1 내지 5% 초산 용액을 사용하여 키토산 또는 키토산 올리고머를 0.1 내지 3%로 용해시키고, 이 용액에 면직물을 담그어 처리한 후 이 처리된 면직물을 약알카리성 용액으로 중화하고 증류수로 세척하여 풍건함으로서 꺼즈를 제조한다.In the case of chitosan or chitosan oligomer, the chitosan or chitosan oligomer is dissolved at 0.1 to 3% using 1 to 5% acetic acid solution as a solvent, and the cotton fabric is immersed in this solution and neutralized with the weakly alkaline solution. And reddish by washing with distilled water to prepare a reddish.
키틴 올리고당 또는 키토산 올리고당은 용매로서 증류수를 사용하여 키틴 올리고당 또는 키토산 올리고당을 0.1 내지 3%으로 용해시키고, 면직물을 담그어 처리한 후 풍건함으로서 꺼즈를 제조한다.Chitin oligosaccharides or chitosan oligosaccharides are prepared by dissolving chitin oligosaccharides or chitosan oligosaccharides in an amount of 0.1 to 3% using distilled water as a solvent, dipping and treating cotton fabrics, followed by air drying.
이와 같이 제조된 꺼즈를 1㎝×1.5㎝로 잘라서 접착 테이프에 부착하여 플라스터를 제조한다.The prepared sod was cut into 1 cm x 1.5 cm and attached to an adhesive tape to prepare a plaster.
[실시예 1]Example 1
키틴 분말 2g을 7N-염산 용액 200g에 현탁시키고, 질소 기류중에서 100℃로 4시간 반응시키고,이 용액을 3N-가성소다용액으로 중화시켜 침전시킨 후 여과하고 증류수로 세척, 다시 아세톤으로 세척하여 건조함으로서 분말상의 키토산 올리고머를 제조하였다. 이와 같이 제조된 키토산 올리고머를 1% 초산용액에 0.1%로 용해시키고 면직물을 침전시키고 건조한 다음 다시 1% 가성소다 용액으로 중화하고 증류수로 세척, 건조함으로서 키토산이 처리된 꺼즈를 제조하였다.2 g of chitin powder was suspended in 200 g of 7N hydrochloric acid solution, reacted at 100 DEG C for 4 hours in a stream of nitrogen, neutralized with 3N caustic soda solution, precipitated, filtered, washed with distilled water, washed with acetone and dried. In order to prepare a powdery chitosan oligomer. The chitosan oligomer prepared as described above was dissolved in 1% acetic acid solution at 0.1%, the cotton fabric was precipitated, dried, neutralized with 1% caustic soda solution, washed with distilled water, and dried to prepare chitosan-treated redds.
이 꺼즈를 1㎝×1.5㎝로 잘라서 법착 테이프에 부착하여 플라스터를 제조하였다.This toad was cut into 1 cm x 1.5 cm and attached to a deposition tape to prepare a plaster.
[실시예 2]Example 2
키토산 분말 1g을 0.5% 아세트산 용액 100g에 분산 용해시킨 후 무수 아세트산 1g을 가하여 N-아세틸화하여 증류수로 세척하고 건조하여 키틴 올리고머를 제조하였다. 제조된 키틴 올리고머를 트리클로로 아세트산에 0.1%으로 용해시킨다는 것만 제외하고 실시예 1과 동일하게 플라스터를 제조하였다.1 g of chitosan powder was dispersed and dissolved in 100 g of 0.5% acetic acid solution, 1 g of acetic anhydride was added thereto, followed by N-acetylation, washing with distilled water, and drying to prepare a chitin oligomer. The plaster was prepared in the same manner as in Example 1 except that the prepared chitin oligomer was dissolved in trichloro acetic acid at 0.1%.
[실시예 3]Example 3
키토산 올리고당 또는 키틴 올리고당을 증류수에 0.1%로 용해시켜 면직물를 처리한다는 것만 제외하고 실시예 1과 동일한 방법으로 키토산 올리고당 또는 키틴 올리고당이 처리된 플라스터를 제조하였다.Chitosan oligosaccharides or chitin oligosaccharides were treated in the same manner as in Example 1 except that chitosan oligosaccharides or chitin oligosaccharides were dissolved in distilled water at 0.1% to treat cotton fabrics.
이와 같이 키토산, 키틴, 이들의 올리고머 또는 이들의 올리고당이 처리된 플라스터는 키토산, 키틴이 가지고 있는 항균성과 항곰팡이성로 상처를 소독하는 효자를 갖는다.As described above, the plaster treated with chitosan, chitin, oligomers thereof, or oligosaccharides thereof has an antibacterial and antifungal effect of chitosan and chitin.
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970013113A KR100217205B1 (en) | 1997-04-09 | 1997-04-09 | Process for preparing plaster for disinfecting a wound |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970013113A KR100217205B1 (en) | 1997-04-09 | 1997-04-09 | Process for preparing plaster for disinfecting a wound |
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| KR19980076411A KR19980076411A (en) | 1998-11-16 |
| KR100217205B1 true KR100217205B1 (en) | 1999-09-01 |
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| KR1019970013113A KR100217205B1 (en) | 1997-04-09 | 1997-04-09 | Process for preparing plaster for disinfecting a wound |
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| KR (1) | KR100217205B1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107126580A (en) * | 2016-02-26 | 2017-09-05 | 许盈 | A kind of bandage and preparation method thereof |
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| KR100451399B1 (en) * | 2001-11-02 | 2004-10-06 | 주식회사 건풍바이오 | The acetylation method of chitosan |
| KR100486042B1 (en) * | 2002-04-18 | 2005-04-29 | 강대인 | Method for preparing chitin hydrolysates having low molecular weight and oligosaccharides by the enzyme treatment |
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| CN107126580A (en) * | 2016-02-26 | 2017-09-05 | 许盈 | A kind of bandage and preparation method thereof |
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| KR19980076411A (en) | 1998-11-16 |
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