JP7435438B2 - 多孔質膜、複合膜及び多孔質膜の製造方法 - Google Patents

多孔質膜、複合膜及び多孔質膜の製造方法 Download PDF

Info

Publication number
JP7435438B2
JP7435438B2 JP2020500226A JP2020500226A JP7435438B2 JP 7435438 B2 JP7435438 B2 JP 7435438B2 JP 2020500226 A JP2020500226 A JP 2020500226A JP 2020500226 A JP2020500226 A JP 2020500226A JP 7435438 B2 JP7435438 B2 JP 7435438B2
Authority
JP
Japan
Prior art keywords
porous membrane
polyvinylidene fluoride
fluoride resin
polymer
branched
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.)
Active
Application number
JP2020500226A
Other languages
English (en)
Japanese (ja)
Other versions
JPWO2020138065A5 (https=
JPWO2020138065A1 (ja
Inventor
俊 志村
正行 花川
健太 岩井
貴亮 安田
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.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
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 Toray Industries Inc filed Critical Toray Industries Inc
Publication of JPWO2020138065A1 publication Critical patent/JPWO2020138065A1/ja
Publication of JPWO2020138065A5 publication Critical patent/JPWO2020138065A5/ja
Application granted granted Critical
Publication of JP7435438B2 publication Critical patent/JP7435438B2/ja
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • B01D71/30Polyalkenyl halides
    • B01D71/32Polyalkenyl halides containing fluorine atoms
    • B01D71/34Polyvinylidene fluoride
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D67/00Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002Organic membrane manufacture
    • B01D67/0009Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
    • B01D67/0011Casting solutions therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D67/00Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002Organic membrane manufacture
    • B01D67/0009Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
    • B01D67/0016Coagulation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/02Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/10Supported membranes; Membrane supports
    • B01D69/107Organic support material
    • B01D69/1071Woven, non-woven or net mesh
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/10Supported membranes; Membrane supports
    • B01D69/108Inorganic support material
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12Composite membranes; Ultra-thin membranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D69/00Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/12Composite membranes; Ultra-thin membranes
    • B01D69/1213Laminated layers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D71/00Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06Organic material
    • B01D71/08Polysaccharides
    • B01D71/12Cellulose derivatives
    • B01D71/14Esters of organic acids
    • B01D71/16Cellulose acetate
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0061Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof characterized by the use of several polymeric components
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/26Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a solid phase from a macromolecular composition or article, e.g. leaching out
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/28Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/12Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08L27/16Homopolymers or copolymers or vinylidene fluoride
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2323/00Details relating to membrane preparation
    • B01D2323/12Specific ratios of components used
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2323/00Details relating to membrane preparation
    • B01D2323/15Use of additives
    • B01D2323/218Additive materials
    • B01D2323/2182Organic additives
    • B01D2323/21839Polymeric additives
    • B01D2323/2187Polyvinylpyrolidone
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2325/00Details relating to properties of membranes
    • B01D2325/02Details relating to pores or porosity of the membranes
    • B01D2325/0283Pore size
    • B01D2325/028321-10 nm
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2325/00Details relating to properties of membranes
    • B01D2325/02Details relating to pores or porosity of the membranes
    • B01D2325/0283Pore size
    • B01D2325/02833Pore size more than 10 and up to 100 nm
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2325/00Details relating to properties of membranes
    • B01D2325/20Specific permeability or cut-off range
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2325/00Details relating to properties of membranes
    • B01D2325/30Chemical resistance
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2325/00Details relating to properties of membranes
    • B01D2325/34Molecular weight or degree of polymerisation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2325/00Details relating to properties of membranes
    • B01D2325/36Hydrophilic membranes
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2325/00Details relating to properties of membranes
    • B01D2325/52Crystallinity
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2201/00Foams characterised by the foaming process
    • C08J2201/04Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
    • C08J2201/054Precipitating the polymer by adding a non-solvent or a different solvent
    • C08J2201/0542Precipitating the polymer by adding a non-solvent or a different solvent from an organic solvent-based polymer composition
    • C08J2201/0544Precipitating the polymer by adding a non-solvent or a different solvent from an organic solvent-based polymer composition the non-solvent being aqueous
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2327/00Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2327/02Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2327/12Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08J2327/16Homopolymers or copolymers of vinylidene fluoride
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2427/00Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2427/02Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2427/12Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C08J2427/16Homopolymers or copolymers of vinylidene fluoride

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Health & Medical Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
JP2020500226A 2018-12-26 2019-12-24 多孔質膜、複合膜及び多孔質膜の製造方法 Active JP7435438B2 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2018242771 2018-12-26
JP2018242771 2018-12-26
PCT/JP2019/050576 WO2020138065A1 (ja) 2018-12-26 2019-12-24 多孔質膜、複合膜及び多孔質膜の製造方法

Publications (3)

Publication Number Publication Date
JPWO2020138065A1 JPWO2020138065A1 (ja) 2021-11-04
JPWO2020138065A5 JPWO2020138065A5 (https=) 2022-11-25
JP7435438B2 true JP7435438B2 (ja) 2024-02-21

Family

ID=71127198

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2020500226A Active JP7435438B2 (ja) 2018-12-26 2019-12-24 多孔質膜、複合膜及び多孔質膜の製造方法

Country Status (7)

Country Link
US (1) US12097470B2 (https=)
EP (1) EP3903914A4 (https=)
JP (1) JP7435438B2 (https=)
KR (1) KR102751586B1 (https=)
CN (1) CN113195083B (https=)
AU (1) AU2019415278B2 (https=)
WO (1) WO2020138065A1 (https=)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20230174230A (ko) * 2021-04-28 2023-12-27 도레이 카부시키가이샤 중공사막 및 그 제조 방법

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010032808A1 (ja) 2008-09-19 2010-03-25 東レ株式会社 分離膜およびその製造方法
JP2010526885A (ja) 2006-11-21 2010-08-05 アーケマ・インコーポレイテッド 耐苛性膜
JP2013202461A (ja) 2012-03-27 2013-10-07 Asahi Kasei Chemicals Corp 多孔質膜の製造方法
WO2014142311A1 (ja) 2013-03-15 2014-09-18 三菱レイヨン株式会社 樹脂組成物、製膜原液、多孔質膜、前記多孔質膜を用いた中空糸膜、水処理装置、電解質支持体、及びセパレーター
WO2015133364A1 (ja) 2014-03-03 2015-09-11 Jnc株式会社 複合微多孔質膜及びこれを用いたフィルター
JP2016510688A (ja) 2013-03-04 2016-04-11 アーケマ・インコーポレイテッド 長鎖分岐状フルオロポリマー膜

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10316793A (ja) 1997-05-19 1998-12-02 Asahi Chem Ind Co Ltd フッ化ビニリデン系樹脂製多孔質膜
ATE433795T1 (de) 2001-10-04 2009-07-15 Toray Industries Verfahren zur herstellung einer hohlfasermembran
JP5109263B2 (ja) 2005-02-28 2012-12-26 東レ株式会社 フッ素樹脂系高分子分離膜およびその製造方法
CA2611116A1 (en) 2005-06-20 2006-12-28 Siemens Water Technologies Corp. Cross linking treatment of polymer membranes
JP5436854B2 (ja) 2006-04-19 2014-03-05 旭化成ケミカルズ株式会社 高耐久性pvdf多孔質膜及びその製造方法、並びに、これを用いた洗浄方法及び濾過方法
CN101500695B (zh) 2006-07-25 2012-09-26 东丽株式会社 氟树脂聚合物分离膜及其制备方法
JP5223435B2 (ja) * 2008-04-16 2013-06-26 ダイキン工業株式会社 含フッ素ブロック共重合体
JP5519684B2 (ja) * 2008-10-28 2014-06-11 アーケマ・インコーポレイテッド 水分流動性ポリマー膜
KR101068437B1 (ko) 2008-12-30 2011-09-28 웅진케미칼 주식회사 투수도 및 내약품성이 우수한 다공성 pvdf 막 및 그 제조방법
WO2013108816A1 (ja) 2012-01-17 2013-07-25 電気化学工業株式会社 多層シート、太陽電池用バックシート及び太陽電池モジュール
JP5871234B2 (ja) * 2012-03-23 2016-03-01 国立研究開発法人物質・材料研究機構 合成コラーゲンナノファイバーの製造方法
JP2013198559A (ja) * 2012-03-23 2013-10-03 National Institute For Materials Science 合成コラーゲンナノファイバーを含む止血材
JP2014222601A (ja) * 2013-05-13 2014-11-27 三菱レイヨン株式会社 非水二次電池負極用バインダー樹脂、非水二次電池負極用スラリー組成物、非水二次電池用負極、および非水二次電池
US20180030293A1 (en) 2015-02-20 2018-02-01 Dic Corporation Ink composition for organic light-emitting device and organic light-emitting device
KR20180042156A (ko) 2015-08-18 2018-04-25 닛폰고세이가가쿠고교 가부시키가이샤 편광막 제조용 폴리비닐 알코올계 수지 입자 및 이의 제조 방법, 폴리비닐 알코올계 필름 및 이의 제조 방법, 편광막, 폴리비닐 알코올계 수지 입자
MY184243A (en) * 2015-10-02 2021-03-29 Sdp Global Co Ltd Absorbent resin composition and method for producing same
JP6938859B2 (ja) * 2015-12-03 2021-09-22 三菱ケミカル株式会社 ポリビニルアルコール系フィルムの製造方法及び偏光膜の製造方法
WO2017163603A1 (ja) * 2016-03-23 2017-09-28 国立大学法人北海道大学 椎間板治療用組成物

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010526885A (ja) 2006-11-21 2010-08-05 アーケマ・インコーポレイテッド 耐苛性膜
WO2010032808A1 (ja) 2008-09-19 2010-03-25 東レ株式会社 分離膜およびその製造方法
JP2013202461A (ja) 2012-03-27 2013-10-07 Asahi Kasei Chemicals Corp 多孔質膜の製造方法
JP2016510688A (ja) 2013-03-04 2016-04-11 アーケマ・インコーポレイテッド 長鎖分岐状フルオロポリマー膜
WO2014142311A1 (ja) 2013-03-15 2014-09-18 三菱レイヨン株式会社 樹脂組成物、製膜原液、多孔質膜、前記多孔質膜を用いた中空糸膜、水処理装置、電解質支持体、及びセパレーター
WO2015133364A1 (ja) 2014-03-03 2015-09-11 Jnc株式会社 複合微多孔質膜及びこれを用いたフィルター

Also Published As

Publication number Publication date
WO2020138065A1 (ja) 2020-07-02
CN113195083A (zh) 2021-07-30
CN113195083B (zh) 2022-12-27
AU2019415278A1 (en) 2021-07-15
US12097470B2 (en) 2024-09-24
AU2019415278B2 (en) 2025-03-13
KR20210104737A (ko) 2021-08-25
KR102751586B1 (ko) 2025-01-10
US20220056235A1 (en) 2022-02-24
EP3903914A4 (en) 2022-11-23
EP3903914A1 (en) 2021-11-03
JPWO2020138065A1 (ja) 2021-11-04

Similar Documents

Publication Publication Date Title
JP5732719B2 (ja) 分離膜およびその製造方法
Alsalhy Hollow fiber ultrafiltration membranes prepared from blends of poly (vinyl chloride) and polystyrene
TW201414537A (zh) 微多孔膜及其製造方法
JPH11515036A (ja) ポリテトラフルオロエチレンの高強度で空気透過性の膜
JP2010094670A (ja) ポリフッ化ビニリデン系複合膜およびその製造方法
JP7409072B2 (ja) 多孔質膜、複合膜及び多孔質膜の製造方法
WO2019066061A1 (ja) 多孔質中空糸膜及びその製造方法
JPWO2017217446A1 (ja) 多孔質膜、及び多孔質膜の製造方法
JPS58114702A (ja) ポリスルホン中空繊維膜
JP2009082882A (ja) ポリフッ化ビニリデン系複合中空糸膜及びその製造方法
JP7435438B2 (ja) 多孔質膜、複合膜及び多孔質膜の製造方法
CA2572492A1 (en) Porous membrane for water treatment and method of manufacturing the same
WO2020262490A1 (ja) 多孔質膜および複合多孔質膜
JP7793987B2 (ja) 多孔質膜及び複合膜
JPH0242102B2 (https=)
JP5292890B2 (ja) 複合中空糸膜
WO2022249839A1 (ja) 分離膜及びその製造方法
WO2012063669A1 (ja) 分離膜の製造方法
JP7827213B2 (ja) 分離膜及びその製造方法
CN117881468A (zh) 多孔膜和制造多孔膜的方法
CN110475605A (zh) 分离膜及分离膜的制造方法
WO2021106726A1 (ja) 多孔質膜、複合膜及び多孔質膜又は複合膜の製造方法
JP2020171923A (ja) 多孔質膜
JP2021186746A (ja) 多孔質膜及び複合膜
JPS63190012A (ja) ポリアクリロニトリル系中空糸膜及びその製法

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20221116

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20221116

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20240109

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20240122

R151 Written notification of patent or utility model registration

Ref document number: 7435438

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151