DE69207020D1 - Poröse Hohlfasermembran aus Polypropylen und ihrere Herstellung - Google Patents

Poröse Hohlfasermembran aus Polypropylen und ihrere Herstellung

Info

Publication number
DE69207020D1
DE69207020D1 DE69207020T DE69207020T DE69207020D1 DE 69207020 D1 DE69207020 D1 DE 69207020D1 DE 69207020 T DE69207020 T DE 69207020T DE 69207020 T DE69207020 T DE 69207020T DE 69207020 D1 DE69207020 D1 DE 69207020D1
Authority
DE
Germany
Prior art keywords
polypropylene
manufacture
hollow fiber
fiber membrane
porous hollow
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 - Fee Related
Application number
DE69207020T
Other languages
English (en)
Other versions
DE69207020T2 (de
Inventor
Jun Kamo
Takayuki Hirai
Hiroshi C O Central Takahashi
Kenji C O Central Resea Kondou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Rayon Co Ltd
Original Assignee
Mitsubishi Rayon Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mitsubishi Rayon Co Ltd filed Critical Mitsubishi Rayon Co Ltd
Application granted granted Critical
Publication of DE69207020D1 publication Critical patent/DE69207020D1/de
Publication of DE69207020T2 publication Critical patent/DE69207020T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0088—Physical treatment with compounds, e.g. swelling, coating or impregnation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0023—Organic membrane manufacture by inducing porosity into non porous precursor membranes
    • B01D67/0025—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching
    • B01D67/0027—Organic membrane manufacture by inducing porosity into non porous precursor membranes by mechanical treatment, e.g. pore-stretching by stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/08—Hollow fibre membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/26—Polyalkenes
    • B01D71/262—Polypropylene
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/02—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D01F6/04—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins
    • D01F6/06—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyolefins from polypropylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/02—Hydrophilization
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/08—Specific temperatures applied
    • B01D2323/081—Heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/14—Membrane materials having negatively charged functional groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/20—Specific permeability or cut-off range
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2933—Coated or with bond, impregnation or core
    • Y10T428/2964—Artificial fiber or filament
    • Y10T428/2967—Synthetic resin or polymer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2973—Particular cross section
    • Y10T428/2975—Tubular or cellular
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/298—Physical dimension

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
DE69207020T 1991-02-08 1992-02-06 Poröse Hohlfasermembran aus Polypropylen und ihrere Herstellung Expired - Fee Related DE69207020T2 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP3780091 1991-02-08
JP20779191 1991-08-20
JP20909291 1991-08-21

Publications (2)

Publication Number Publication Date
DE69207020D1 true DE69207020D1 (de) 1996-02-08
DE69207020T2 DE69207020T2 (de) 1996-06-13

Family

ID=27289593

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69207020T Expired - Fee Related DE69207020T2 (de) 1991-02-08 1992-02-06 Poröse Hohlfasermembran aus Polypropylen und ihrere Herstellung

Country Status (3)

Country Link
US (2) US5232642A (de)
EP (1) EP0498414B1 (de)
DE (1) DE69207020T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112717708A (zh) * 2020-12-09 2021-04-30 江西爱科道环境科技发展有限公司 一种亲水性聚丙烯中空纤维微孔膜的制备方法

Families Citing this family (67)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5677360A (en) * 1991-02-13 1997-10-14 Mitsubishi Rayon Co., Ltd. Hydrophilic polymer alloy, fiber and porous membrane comprising this polymer alloy, and methods for preparing them
DE69305120T2 (de) * 1992-07-22 1997-03-06 Mitsubishi Rayon Co Hydrophobe, poröse Membranen, Verfahren zu ihrer Herstellung und deren Verwendung
DE19520188C2 (de) * 1995-06-01 1999-04-08 Geesthacht Gkss Forschung Verfahren zur Herstellung von Polymer-Hohlfadenmembranen
US5762840A (en) * 1996-04-18 1998-06-09 Kimberly-Clark Worldwide, Inc. Process for making microporous fibers with improved properties
US6350411B1 (en) 1998-03-23 2002-02-26 Celgard Inc. Microporous hollow fiber blood oxygenator
US6214423B1 (en) * 1998-04-16 2001-04-10 Texas Instruments Incorporated Method of forming a polymer on a surface
US6287730B1 (en) 1998-08-14 2001-09-11 Celgard Inc. Hydrophilic polyolefin having a coating containing a surfactant and an EVOH copolymer
US6793820B1 (en) * 1999-01-21 2004-09-21 Ebara Corporation Ethylene-vinyl alcohol hollow fiber membranes
US6537696B2 (en) 2000-12-20 2003-03-25 Daramic, Inc. Nonwoven separator for a nickel-metal hydride battery
JP3515570B2 (ja) * 2001-07-31 2004-04-05 三菱レイヨン株式会社 内壁部に櫛形ポリマーが導入された中空繊維、ゲル充填中空繊維及び繊維配列体薄片
CA2365817A1 (en) 2001-12-11 2003-06-11 Pierre Cote Methods of making stretched filtering membranes and membrane modules
US6692868B2 (en) 2001-12-19 2004-02-17 Daramic, Inc. Melt blown battery separator
CZ2002184A3 (cs) * 2002-01-16 2003-09-17 Eidos, S. R. O. Mikroporézní membránová dutá vlákna s podélně proměnnými mechanickými a filtračními vlastnostmi a způsob jejich přípravy
US7097694B1 (en) 2003-12-04 2006-08-29 Fleetguard, Inc. High performance, high efficiency filter
US20050202163A1 (en) * 2004-03-09 2005-09-15 Celgard Inc. Method of making a composite microporous membrane
CN100548455C (zh) 2004-09-30 2009-10-14 麦克马斯特大学 包括层状亲水性涂层的复合材料
BRPI0915329A2 (pt) 2008-06-30 2015-10-27 3M Innovative Proferties Company método de formação de uma membrana assimétrica
JP2011526830A (ja) * 2008-06-30 2011-10-20 スリーエム イノベイティブ プロパティズ カンパニー 再湿潤可能な非対称な膜の形成方法
JP2011526831A (ja) * 2008-06-30 2011-10-20 スリーエム イノベイティブ プロパティズ カンパニー 親水性膜の形成方法
WO2010108285A1 (en) 2009-03-26 2010-09-30 Asteia Technology Inc. Non-braided reinforced hollow fibre membrane
EP2448658B1 (de) 2009-06-26 2014-10-01 BL Technologies, Inc. Nicht geflochtene textilverstärkte hohlfasermembran
EP2412426A1 (de) 2010-07-30 2012-02-01 Schaefer Kalk GmbH & Co. KG Poröse Hohlfaser
EP2616167B1 (de) 2010-09-15 2022-11-02 BL Technologies, Inc. Verfahren zur herstellung von garnverstärkten hohlfasermembranen um einen löslichen kern
US8529814B2 (en) 2010-12-15 2013-09-10 General Electric Company Supported hollow fiber membrane
US9321014B2 (en) 2011-12-16 2016-04-26 Bl Technologies, Inc. Hollow fiber membrane with compatible reinforcements
US9643129B2 (en) 2011-12-22 2017-05-09 Bl Technologies, Inc. Non-braided, textile-reinforced hollow fiber membrane
US8975305B2 (en) 2012-02-10 2015-03-10 Kimberly-Clark Worldwide, Inc. Rigid renewable polyester compositions having a high impact strength and tensile elongation
US9022229B2 (en) 2012-03-09 2015-05-05 General Electric Company Composite membrane with compatible support filaments
US8999454B2 (en) 2012-03-22 2015-04-07 General Electric Company Device and process for producing a reinforced hollow fibre membrane
US9227362B2 (en) 2012-08-23 2016-01-05 General Electric Company Braid welding
CN103768958B (zh) * 2012-10-19 2015-09-16 中国石油化工股份有限公司 一种亲水性聚丙烯中空纤维微孔膜及其制备方法
CZ2012772A3 (cs) * 2012-11-12 2014-01-02 Vysoké Učení Technické V Brně Způsob zdrsnění dutých polymerních vláken
US9149749B2 (en) 2012-11-13 2015-10-06 Hollingsworth & Vose Company Pre-coalescing multi-layered filter media
US9149748B2 (en) 2012-11-13 2015-10-06 Hollingsworth & Vose Company Multi-layered filter media
US11090590B2 (en) 2012-11-13 2021-08-17 Hollingsworth & Vose Company Pre-coalescing multi-layered filter media
WO2014111292A1 (en) 2013-01-18 2014-07-24 Basf Se Acrylic dispersion-based coating compositions
CN105358107B (zh) * 2013-06-12 2019-12-27 金伯利-克拉克环球有限公司 包含由多孔聚烯烃纤维形成的非织造纤网的吸收性制品
US20140367324A1 (en) * 2013-06-15 2014-12-18 Fenwal, Inc. Coatings for biological fluid filters
BR112016002594B1 (pt) 2013-08-09 2021-08-17 Kimberly-Clark Worldwide, Inc. Método para controlar seletivamente o grau de porosidade em um material polimérico, e, material polimérico
CN105492513B (zh) 2013-08-09 2019-03-08 金伯利-克拉克环球有限公司 各向异性的聚合物材料
CZ305208B6 (cs) * 2013-11-19 2015-06-10 Vysoké Učení Technické V Brně Způsob úpravy dutého vlákna pro výměníky tepla
US10195542B2 (en) 2014-05-15 2019-02-05 Hollingsworth & Vose Company Surface modified filter media
US10399024B2 (en) 2014-05-15 2019-09-03 Hollingsworth & Vose Company Surface modified filter media
EP3152348B1 (de) * 2014-06-06 2020-08-05 Kimberly-Clark Worldwide, Inc. Hohle poröse fasern
WO2015187924A1 (en) 2014-06-06 2015-12-10 Kimberly-Clark Worldwide, Inc. Thermoformed article formed from a porous polymeric sheet
US10640898B2 (en) 2014-11-26 2020-05-05 Kimberly-Clark Worldwide, Inc. Annealed porous polyolefin material
KR101834143B1 (ko) 2015-01-30 2018-03-02 킴벌리-클라크 월드와이드, 인크. 소음이 감소된 흡수 용품 패키지
KR101832683B1 (ko) 2015-01-30 2018-02-26 킴벌리-클라크 월드와이드, 인크. 흡수 용품에 사용하기 위한 소음이 감소된 필름
US10828587B2 (en) 2015-04-17 2020-11-10 Hollingsworth & Vose Company Stable filter media including nanofibers
WO2016196870A1 (en) * 2015-06-03 2016-12-08 Celgard, Llc Improved low electrical resistance microporous battery separator membranes, separators, cells, batteries, and related methods
US10077325B2 (en) 2015-06-05 2018-09-18 Exxonmobil Chemical Patents Inc. Silica supports with high aluminoxane loading capability
WO2016195865A1 (en) * 2015-06-05 2016-12-08 Exxonmobil Chemical Patents Inc. Porous propylene polymers
US9738779B2 (en) 2015-06-05 2017-08-22 Exxonmobil Chemical Patents Inc. Heterophasic copolymers and sequential polymerization
WO2016196334A1 (en) 2015-06-05 2016-12-08 Exxonmobil Chemical Patents Inc. Single reactor production of polymers in gas or slurry phase
US9920176B2 (en) 2015-06-05 2018-03-20 Exxonmobil Chemical Patents Inc. Single site catalyst supportation
US9725537B2 (en) 2015-06-05 2017-08-08 Exxonmobil Chemical Patents Inc. High activity catalyst supportation
US10280235B2 (en) 2015-06-05 2019-05-07 Exxonmobil Chemical Patents Inc. Catalyst system containing high surface area supports and sequential polymerization to produce heterophasic polymers
US10280233B2 (en) 2015-06-05 2019-05-07 Exxonmobil Chemical Patents Inc. Catalyst systems and methods of making and using the same
CN107922537B (zh) 2015-06-05 2021-07-27 埃克森美孚化学专利公司 气相或淤浆相中多相聚合物的制备
US10329360B2 (en) 2015-06-05 2019-06-25 Exxonmobil Chemical Patents Inc. Catalyst system comprising supported alumoxane and unsupported alumoxane particles
WO2016196331A1 (en) 2015-06-05 2016-12-08 Exxonmobil Chemical Patents Inc. Supported metallocene catalyst systems for polymerization
US10294316B2 (en) 2015-06-05 2019-05-21 Exxonmobil Chemical Patents Inc. Silica supports with high aluminoxane loading capability
US9725569B2 (en) 2015-06-05 2017-08-08 Exxonmobil Chemical Patents Inc. Porous propylene polymers
US9809664B2 (en) 2015-06-05 2017-11-07 Exxonmobil Chemical Patents Inc. Bimodal propylene polymers and sequential polymerization
RU2732614C2 (ru) 2015-09-18 2020-09-22 СЕЛГАРД, ЭлЭлСи Усовершенствованные мембраны, каландрированные микропористые мембраны, аккумуляторные сепараторы и соответствующие способы
EP3464390A1 (de) 2016-05-27 2019-04-10 ExxonMobil Chemical Patents Inc. Metallocenkatalysatorzusammensetzungen und und polymerisationsverfahren damit
US10625196B2 (en) 2016-05-31 2020-04-21 Hollingsworth & Vose Company Coalescing filter media

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA80465B (en) * 1979-02-13 1981-08-26 Celanese Corp Process for preparing hollow microporous polypropylene fibers
US4290987A (en) * 1979-07-02 1981-09-22 Celanese Corporation Process for preparing microporous hollow fibers
DE3032380A1 (de) * 1979-09-04 1981-03-19 Celanese Corp., 10036 New York, N.Y. Verfahren zur herstellung hydrophiler mikroporoeser folien
JPS5766114A (en) * 1980-10-14 1982-04-22 Mitsubishi Rayon Co Ltd Porous polyethylene hollow fiber and its production
US4530809A (en) * 1980-10-14 1985-07-23 Mitsubishi Rayon Co., Ltd. Process for making microporous polyethylene hollow fibers
US4696748A (en) * 1984-10-16 1987-09-29 Asahi Medical Co., Ltd. Plasma separator and a process for preparing the same
JPS61125408A (ja) * 1984-11-20 1986-06-13 Mitsubishi Rayon Co Ltd 親水化多孔質ポリオレフイン中空糸及び中空糸の親水化法
US5084173A (en) * 1985-05-27 1992-01-28 Asahi Medical Co., Ltd. Hydrophilic composite porous membrane, a method of producing the plasma separator
JPS6233878A (ja) * 1985-08-06 1987-02-13 三菱レイヨン株式会社 耐熱性多孔質ポリオレフイン中空糸
US4695592A (en) * 1986-01-07 1987-09-22 Mitsubishi Rayon Co., Ltd. Hydrophilized porous membrane and production process thereof
CA1315929C (en) * 1987-06-26 1993-04-13 Masahiko Yamaguchi Porous hollow-fiber
US4876289A (en) * 1988-07-01 1989-10-24 Mitsubishi Rayon Co., Ltd. Hydrophilized porous membrane and production process thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112717708A (zh) * 2020-12-09 2021-04-30 江西爱科道环境科技发展有限公司 一种亲水性聚丙烯中空纤维微孔膜的制备方法
CN112717708B (zh) * 2020-12-09 2023-01-13 江西爱科道环境科技发展有限公司 一种亲水性聚丙烯中空纤维微孔膜的制备方法

Also Published As

Publication number Publication date
EP0498414B1 (de) 1995-12-27
DE69207020T2 (de) 1996-06-13
EP0498414A2 (de) 1992-08-12
US5547756A (en) 1996-08-20
US5232642A (en) 1993-08-03
EP0498414A3 (en) 1993-03-10

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