WO2003012198A1 - Materiau a base de fibres organiques et/ou inorganiques presentant des proprietes germicides et applications - Google Patents
Materiau a base de fibres organiques et/ou inorganiques presentant des proprietes germicides et applications Download PDFInfo
- Publication number
- WO2003012198A1 WO2003012198A1 PCT/FR2002/002149 FR0202149W WO03012198A1 WO 2003012198 A1 WO2003012198 A1 WO 2003012198A1 FR 0202149 W FR0202149 W FR 0202149W WO 03012198 A1 WO03012198 A1 WO 03012198A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- weight
- activated carbon
- carbon fibers
- fibrous composition
- fibers
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
- D21H13/36—Inorganic fibres or flakes
- D21H13/46—Non-siliceous fibres, e.g. from metal oxides
- D21H13/50—Carbon fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/18—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being cellulose or derivatives thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
- B01D39/2003—Glass or glassy material
- B01D39/2017—Glass or glassy material the material being filamentary or fibrous
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K17/00—Soil-conditioning materials or soil-stabilising materials
- C09K17/52—Mulches
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/36—Biocidal agents, e.g. fungicidal, bactericidal, insecticidal agents
Definitions
- the invention relates to a new material based on organic and / or inorganic fibers having germicidal properties. It also relates to different uses of said material for the design of articles for which bactericidal properties are sought.
- HEPA High Efficiency Particle Arrestor
- the filter media developed for these applications make it possible to mechanically stop microorganisms (bacteria, viruses, spores, etc.) but cannot prevent their reproduction upstream or downstream of the media and ultimately their dissemination in the ventilation circuits.
- Water or air treatment can also be carried out by photocatalysis, the filtering medium then consisting of a support coated with a photocatalytic composition containing a photocatalyst agent of the type, for example TiO2. These media have no bactericidal characteristics in the absence of UV radiation.
- the problem is similar for anti-pollution masks used in a certain number of professions in permanent contact with contaminated environments (clean rooms in particular) or even used in asthmatic subjects for example.
- the masks are capable of mechanically stopping bacteria without, however, being able to prevent their proliferation on their surface, so that the user ends up inhaling a large proportion of germs.
- the mulch papers used in the agricultural field are most of the time treated with antifungal or anti-mold agents of the metal salt type. This is for example the case in document F -A-2,016,071, in which a mulching paper is described containing a precipitate of a solution of hydroxyquinoline and of a solution of metal salts. In practice, the precipitate is added directly to the pulp during the papermaking process. Even if such a paper has interesting germicidal properties, it can however be expected, given the large proportion of metals in the paper, a massive release of said metals into the soil and therefore a significant pollution of the environment.
- the problem which the invention proposes to solve is to develop a material capable of being used inter alia in the aforementioned applications, which is endowed with a germicidal activity without however presenting any risk of pollution. vis-à-vis the surrounding environment, be it air, food or even water.
- Such a material can also find other applications, in particular as wall paper, acoustic panel, vacuum bag, or wiping paper. It would indeed be interesting for such articles to have bactericidal properties making it possible to decontaminate the air in an enclosure, in particular in a child's bedroom (in the case of drapes and panels acoustic), to destroy bacteria and thus avoid the proliferation of bacteria outside the vacuum cleaner (in the case of vacuum cleaner bags), or to avoid any risk of contamination with the skin (in the case of paper d 'wiping), especially for cleaning the skin of babies.
- the invention provides a permeable material containing a fibrous composition consisting of organic and / or inorganic fibers.
- the material is characterized in that it also contains activated carbon fibers on which a germicidal agent is adsorbed.
- the Applicant has indeed had the idea of fixing the germicidal agent directly on activated carbon fibers, which are known to have a high specific surface, which not only makes it possible to considerably reduce the quantity of germicidal agent necessary to obtain satisfactory bactericidal efficiency, but also to incorporate activated carbon fibers at very low rates into the material, thereby reducing the production cost.
- the material contains
- 0.1 to 10 g / m 2 advantageously 1 g / m 2 of activated carbon fibers.
- a mass of less than 0.1 g / m 2 satisfactory bactericidal efficacy is not obtained.
- a mass greater than 10 g / m 2 the bactericidal efficiency is total.
- permeable material means a structure permeable to air and to liquid effluents, the material being obtained from fibers for textile use, organic and inorganic, alone or in mixture, the material possibly being a nonwoven, a fabric or even a grid.
- Activated carbon fibers as such are perfectly known and their manufacturing process is more particularly described in the document FR 97.14704, incorporated here by reference.
- a first possibility consists in starting with a carbon fiber texture and in subjecting it to mid activation treatment.
- the carbon fiber texture is obtained directly from carbon threads or fibers from a carbon precursor by heat treatment or from carbon precursor threads or fibers, the heat treatment for transformation of the precursor then being carried out after texture shaping.
- the carbon precursor used is a cellulose, more particularly a radiomy and the final phase of heat treatment of carbonization of the precursor is carried out at a temperature between 1000 ° C and 1300 ° C, under a nitrogen atmosphere and for a period of time between 0.7 min and 1.3 min.
- Activation is carried out by heat treatment of the carbon fiber texture under an oxidizing atmosphere, such as water vapor or preferably carbon dioxide or a mixture of carbon dioxide and water vapor.
- the heat treatment temperature is preferably between 850 ° C and 950 ° C and its duration is preferably between 50 min and 300 min depending on the specific surface desired.
- a second possibility consists in starting from a texture of carbon precursor fibers and of impregnating the latter with a composition making it possible, after carbonization, to directly obtain an activated texture of carbon fibers.
- the carbon precursor is preferably a cellulose, more particularly a rayon.
- the impregnation is carried out with a composition containing a constituent chosen from phosphoric acid, zinc chloride, potassium sulphate, potassium hydroxide, diamonic phosphate and ammonium chloride.
- the impregnation is carried out by a composition containing phosphoric acid so that the mass of acid fixed on the texture is between 4 and 13% of the mass of the dry texture.
- the heat treatment is preferably carried out at a temperature between 350 ° C and 500 ° C under an inert atmosphere or under an atmosphere containing a reaction activator such as carbon dioxide or water vapor.
- the germicidal agent is adsorbed on the activated carbon fibers.
- the germicidal agent is a metal salt chosen from the group comprising the silver, copper, zinc, platinum salt.
- salt is meant in a nonlimiting manner chlorides, sulfates, nitrates, etc.
- the metal salt can be deposited by cation exchange, by liquid impregnation or under vacuum.
- one of the essential advantages of the invention is to provide a material having a very low quantity of germicidal agent, in this case of metal salt, for which any risk of metal being released into the direct environment be absent.
- the metal salt advantageously the silver salt
- the structure of the material incorporating the activated carbon fibers treated with the germicidal agent will depend on the use which is made of it subsequently. It may be, as already said, a nonwoven, a fabric, or even a grid.
- organic fiber forming part of the material of the invention preferably, but not limited to, natural fibers, in particular cellulose, cotton, organic chemical fibers, in particular modified cellulose, methylcellulose, rayon, acrylic, nylon, polyester, polyethylene, polypropylene, polyamide.
- natural fibers in particular cellulose, cotton, organic chemical fibers, in particular modified cellulose, methylcellulose, rayon, acrylic, nylon, polyester, polyethylene, polypropylene, polyamide.
- organic fibers which can be used in the material of the invention are in particular glass or metal fibers.
- the permeable material contains, in addition to the activated carbon fibers, exclusively cellulose fibers.
- the mechanical strength and therefore the mass of the material is variable depending on the intended application.
- the mass of the material is between 10 and 1000 g / m 2 .
- the material can be used in multiple applications, and in particular but not limited to, as a mulching paper, photocatalytic filtering medium or not, (for uses for example as medium in air conditioning systems, anti-mask pollution, vacuum bag), wall paper, acoustic panel, wiping paper or food packaging.
- a mulching paper with a mass of between 60 and 120 g / m 2 comprising: "a fibrous composition containing:
- the invention relates to a wall paper with a mass of between 80 and 250 g / m 2 comprising: "a fibrous composition containing:
- the invention relates to a vacuum bag with a mass of between 20 and 150 g / m 2 comprising: "a fibrous composition containing:
- the subject of the invention is also a wiping paper with a mass of between 10 and 300 g / m 2 comprising:
- the invention also relates to an anti-pollution mask with a mass of between 30 and 150 g / m 2 comprising: "a fibrous composition containing:
- polyester fibers - 70 to 90% by weight of polyester fibers, - 10 to 30% of acrylic latex by weight of the dry fibrous composition,
- the subject of the invention is a food packaging with a mass of between 35 and 150 g / m 2 comprising:
- a material with a mass equal to 100 g / m 2 having the following composition is manufactured:
- - fibrous composition 30% of semi-bleached softwood kraft pulp, and 70% of hardwood softwood kraft pulp, - 1% of activated carbon fibers by weight of the dry fibrous composition, ie 1 g / m 2 , on which 0.05% silver nitrate is adsorbed by weight of activated carbon fibers, ie 0.5 mg / m 2 .
- Rayon fabric consisting of a multifilent viscose obtained from 190 tex threads woven in 15x15 texture (15 threads per cm in warp and weft).
- the fabric After desizing, the fabric is charred by being brought to a final temperature of approximately 1200 ° C. for approximately 1 min under nitrogen.
- Activation of the carbon fabric obtained is carried out by passing the fabric through a heat treatment zone of an oven under an atmosphere made up of 100% carbon dioxide. This zone is materialized, as well as zones of rise and fall in temperature by a mold in the form of tunnel along which the fabric is advanced continuously.
- the heat treatment is carried out at a temperature of approximately 920 ° C., and the residence time at this temperature is approximately 1 hour.
- the activated carbon fabric obtained has a microporosity of average size approximately equal to 0.6 nm. W Treatment of fibers with silver nitrate
- a 100 g sample of active carbon tissue is impregnated with an aqueous solution of silver nitrate at 50 mg / 1 of silver ion concentration, ie 79 mg / 1 of silver nitrate (0.00046 mol / 1) . After drying at 150 ° C, the fibers obtained contain 0.05% silver.
- the above material is contaminated with a suspension at 10 6 CFU / ml of bacteria Escherichia Coli, and Bacillus subtilis.
- the decontamination rate is observed at regular intervals over a period of 128 minutes. The results are shown in the following table.
- a mulching paper having the following composition:
- the mass of paper obtained is equal to 85g / m 2 .
- a drapery paper having the following composition: "fibrous composition:
- 1% of modified rosin 0.1% of activated carbon fibers (by weight of the dry fibrous composition) containing 0.05% of silver salt (by weight of fibers of activated carbon).
- a vacuum cleaner bag paper having the following composition is produced:
- 1% of modified rosin 0.1% of activated carbon fibers (by weight of the dry fibrous composition) containing 0.05% of silver salt (by weight of fibers of activated carbon).
- the mass of paper obtained is equal to 50 g / m 2
- a wiping paper having the following composition:
- the mass of paper obtained is equal to 40 g / m 2 EXAMPLE 6
- An anti-pollution mask comprising the following composition:
- polyester fibers - 80% by weight of polyester fibers
- the mass of paper obtained is equal to 45 g / m 2 .
- Food packaging is produced with the following composition:
- the mass of paper obtained is equal to 60 g / m 2 .
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Soil Sciences (AREA)
- Inorganic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
- Protection Of Plants (AREA)
- Respiratory Apparatuses And Protective Means (AREA)
- Filters For Electric Vacuum Cleaners (AREA)
- Cleaning Implements For Floors, Carpets, Furniture, Walls, And The Like (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002456027A CA2456027A1 (fr) | 2001-07-31 | 2002-06-20 | Materiau a base de fibres organiques et/ou inorganiques presentant des proprietes germicides et applications |
JP2003517366A JP2005521797A (ja) | 2001-07-31 | 2002-06-20 | 殺菌特性を有する有機及び/又は無機繊維系材料及びその使用 |
EP02748969A EP1415038A1 (fr) | 2001-07-31 | 2002-06-20 | Materiau a base de fibres organiques et/ou inorganiques presentant des proprietes germicides et applications |
IL15999702A IL159997A0 (en) | 2001-07-31 | 2002-06-20 | Material based on organic and/or inorganic fibres having germicidal properties and uses thereof |
US10/485,088 US20040200591A1 (en) | 2001-07-31 | 2002-06-20 | Material based on organic and/or inorganic fibres having germicidal properties and uses thereof |
NO20040418A NO20040418L (no) | 2001-07-31 | 2004-01-30 | Materiale basert pa organiske og/eller uorganiske fibrer med bakteriedrepende egenskaper |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR01/10227 | 2001-07-31 | ||
FR0110227A FR2828114B1 (fr) | 2001-07-31 | 2001-07-31 | Materiau a base de fibres organiques et/ou inorganiques presentant des proprietes germicides et applications |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003012198A1 true WO2003012198A1 (fr) | 2003-02-13 |
Family
ID=8866109
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2002/002149 WO2003012198A1 (fr) | 2001-07-31 | 2002-06-20 | Materiau a base de fibres organiques et/ou inorganiques presentant des proprietes germicides et applications |
Country Status (11)
Country | Link |
---|---|
US (1) | US20040200591A1 (fr) |
EP (1) | EP1415038A1 (fr) |
JP (1) | JP2005521797A (fr) |
CN (1) | CN1561422A (fr) |
CA (1) | CA2456027A1 (fr) |
FR (1) | FR2828114B1 (fr) |
IL (1) | IL159997A0 (fr) |
NO (1) | NO20040418L (fr) |
PL (1) | PL366864A1 (fr) |
WO (1) | WO2003012198A1 (fr) |
ZA (1) | ZA200400634B (fr) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8567117B2 (en) | 2004-10-04 | 2013-10-29 | Profile Products, Llc | Netless fiber mulch mats bound with bicomponent fibers |
KR101525769B1 (ko) * | 2007-06-26 | 2015-06-04 | 이노닉스 테크놀로지스, 인코포레이티드 | 인간 병원체의 전파를 감소시키기 위한 장치 |
US8357220B2 (en) | 2008-11-07 | 2013-01-22 | Hollingsworth & Vose Company | Multi-phase filter medium |
US8679218B2 (en) | 2010-04-27 | 2014-03-25 | Hollingsworth & Vose Company | Filter media with a multi-layer structure |
IT1402531B1 (it) * | 2010-10-25 | 2013-09-13 | Aspic S R L | Struttura per pacciamatura, procedimento per la sua produzione e suo utilizzo. |
DE102011107648A1 (de) | 2011-07-12 | 2013-01-17 | Carl Freudenberg Kg | Flachwischbezug mit antimikrobieller oder antibakterieller Ausrüstung |
US9694306B2 (en) | 2013-05-24 | 2017-07-04 | Hollingsworth & Vose Company | Filter media including polymer compositions and blends |
CN103637402A (zh) * | 2013-12-05 | 2014-03-19 | 吴江市社翊纺织有限公司 | 一种多功能保健内裤 |
CN105442382A (zh) * | 2014-08-13 | 2016-03-30 | 中国制浆造纸研究院 | 一种尼龙纸及其生产方法 |
SE1550517A1 (en) * | 2015-04-29 | 2016-10-30 | Stora Enso Oyj | A ground cover mulch comprising carbon black fiber |
CN105544280B (zh) * | 2015-12-15 | 2017-11-07 | 吴来友 | 一种镜头纸及其制备方法 |
KR101684444B1 (ko) * | 2016-01-27 | 2016-12-08 | 박규섭 | 원적외선 방출기능을 갖는 살균도마 및 그 제조방법 |
KR101732142B1 (ko) | 2016-12-01 | 2017-05-02 | (주)지앤테크놀러지 | 숯과 소금이 함유된 살균도마 및 그 제조방법 |
US10537838B2 (en) * | 2016-12-20 | 2020-01-21 | Kx Technologies Llc | Antimicrobial composite filtering material and method for making the same |
RU2653019C1 (ru) * | 2017-05-29 | 2018-05-04 | Кирилл Сергеевич Паникаровских | Способ сушки пульпы фосфорной кислоты в сушильном барабане при производстве минеральных удобрений |
CN108541865A (zh) * | 2018-04-10 | 2018-09-18 | 柳州潜荣健康产业有限公司 | 一种流体食品防腐保鲜材料的制备方法 |
KR102437753B1 (ko) * | 2020-06-03 | 2022-08-29 | 신석균 | 분진포집효율성을 향상시킨 다층 마스크 및 제조방법 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH09176922A (ja) * | 1995-12-26 | 1997-07-08 | Gun Ei Chem Ind Co Ltd | 活性炭繊維の製造方法 |
EP0799928A2 (fr) * | 1996-04-05 | 1997-10-08 | Mitsubishi Paper Mills, Ltd. | Agent antibacterien et antifongique et matière fibreuse le contenant |
US5705269A (en) * | 1994-02-01 | 1998-01-06 | Electrophor, Inc. | Modified activated carbon |
US5736009A (en) * | 1996-02-16 | 1998-04-07 | Soon-Jai; Kim | Germicidal packing paper with electroconductivity and method for preparing the same |
JPH10165809A (ja) * | 1996-12-06 | 1998-06-23 | Unitika Ltd | 抗菌性吸着材 |
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US3779244A (en) * | 1971-02-03 | 1973-12-18 | Johns Manville | Disposable face respirator |
US4245689A (en) * | 1978-05-02 | 1981-01-20 | Georgia Bonded Fibers, Inc. | Dimensionally stable cellulosic backing web |
US4565727A (en) * | 1983-09-12 | 1986-01-21 | American Cyanamid Co. | Non-woven activated carbon fabric |
US4906462A (en) * | 1986-11-14 | 1990-03-06 | Nippon Zeon Co., Ltd. | Deodorant composition and deodorant composite material |
MX9302110A (es) * | 1992-04-15 | 1994-05-31 | Schuller Int Inc | Filtro de aire y metodo para reducir la cantidad de microorganismos en el aire contaminado. |
JP3073418B2 (ja) * | 1995-02-01 | 2000-08-07 | 王子製紙株式会社 | 紙マルチシート及び紙マルチシートの製造方法 |
US5853541A (en) * | 1995-02-10 | 1998-12-29 | International Paper Company | Degradable cotton base cellulosic agricultural mat |
US5945211A (en) * | 1996-02-22 | 1999-08-31 | Mitsui Mining And Smelting Co., Ltd. | Composite material carrying zinc oxide fine particles adhered thereto and method for preparing same |
US6066375A (en) * | 1997-04-10 | 2000-05-23 | Fort James Corporation | Coated paperboard and paperboard containers having a microwave interactive layer which emits none or very low amounts of benzene in microwave applications |
DE69808790T3 (de) * | 1997-09-12 | 2009-07-16 | The Procter & Gamble Co., Cincinnati | Hautreinigungs- und konditionierungsartikel für haut und haar |
US5906825A (en) * | 1997-10-20 | 1999-05-25 | Magellan Companies, Inc. | Polymers containing antimicrobial agents and methods for making and using same |
US6102039A (en) * | 1997-12-01 | 2000-08-15 | 3M Innovative Properties Company | Molded respirator containing sorbent particles |
US6171369B1 (en) * | 1998-05-11 | 2001-01-09 | Airflo Europe, N.V. | Vacuum cleaner bag construction and method of operation |
US6261679B1 (en) * | 1998-05-22 | 2001-07-17 | Kimberly-Clark Worldwide, Inc. | Fibrous absorbent material and methods of making the same |
-
2001
- 2001-07-31 FR FR0110227A patent/FR2828114B1/fr not_active Expired - Fee Related
-
2002
- 2002-06-20 IL IL15999702A patent/IL159997A0/xx unknown
- 2002-06-20 PL PL02366864A patent/PL366864A1/xx unknown
- 2002-06-20 EP EP02748969A patent/EP1415038A1/fr not_active Withdrawn
- 2002-06-20 CA CA002456027A patent/CA2456027A1/fr not_active Abandoned
- 2002-06-20 US US10/485,088 patent/US20040200591A1/en not_active Abandoned
- 2002-06-20 CN CNA028193350A patent/CN1561422A/zh active Pending
- 2002-06-20 WO PCT/FR2002/002149 patent/WO2003012198A1/fr not_active Application Discontinuation
- 2002-06-20 JP JP2003517366A patent/JP2005521797A/ja active Pending
-
2004
- 2004-01-27 ZA ZA200400634A patent/ZA200400634B/en unknown
- 2004-01-30 NO NO20040418A patent/NO20040418L/no not_active Application Discontinuation
Patent Citations (5)
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US5705269A (en) * | 1994-02-01 | 1998-01-06 | Electrophor, Inc. | Modified activated carbon |
JPH09176922A (ja) * | 1995-12-26 | 1997-07-08 | Gun Ei Chem Ind Co Ltd | 活性炭繊維の製造方法 |
US5736009A (en) * | 1996-02-16 | 1998-04-07 | Soon-Jai; Kim | Germicidal packing paper with electroconductivity and method for preparing the same |
EP0799928A2 (fr) * | 1996-04-05 | 1997-10-08 | Mitsubishi Paper Mills, Ltd. | Agent antibacterien et antifongique et matière fibreuse le contenant |
JPH10165809A (ja) * | 1996-12-06 | 1998-06-23 | Unitika Ltd | 抗菌性吸着材 |
Non-Patent Citations (2)
Title |
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DATABASE WPI Section Ch Week 199737, Derwent World Patents Index; Class A14, AN 1997-400103, XP002195968 * |
DATABASE WPI Section Ch Week 199835, Derwent World Patents Index; Class A97, AN 1998-406675, XP002195967 * |
Also Published As
Publication number | Publication date |
---|---|
CA2456027A1 (fr) | 2003-02-13 |
EP1415038A1 (fr) | 2004-05-06 |
ZA200400634B (en) | 2004-10-21 |
FR2828114B1 (fr) | 2004-04-02 |
PL366864A1 (en) | 2005-02-07 |
CN1561422A (zh) | 2005-01-05 |
JP2005521797A (ja) | 2005-07-21 |
US20040200591A1 (en) | 2004-10-14 |
IL159997A0 (en) | 2004-06-20 |
FR2828114A1 (fr) | 2003-02-07 |
NO20040418L (no) | 2004-03-30 |
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