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JPS6438103A - Hydrophilic porous film and its production - Google Patents

Hydrophilic porous film and its production

Info

Publication number
JPS6438103A
JPS6438103A JP19431787A JP19431787A JPS6438103A JP S6438103 A JPS6438103 A JP S6438103A JP 19431787 A JP19431787 A JP 19431787A JP 19431787 A JP19431787 A JP 19431787A JP S6438103 A JPS6438103 A JP S6438103A
Authority
JP
Japan
Prior art keywords
film
porous film
polymer
hydrophilic
soln
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.)
Granted
Application number
JP19431787A
Other languages
Japanese (ja)
Other versions
JPH0567330B2 (en
Inventor
Noriyuki Koyama
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.)
Terumo Corp
Original Assignee
Terumo Corp
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 Terumo Corp filed Critical Terumo Corp
Priority to JP19431787A priority Critical patent/JPS6438103A/en
Publication of JPS6438103A publication Critical patent/JPS6438103A/en
Publication of JPH0567330B2 publication Critical patent/JPH0567330B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Separation Using Semi-Permeable Membranes (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

PURPOSE:To obtain a film having stable water permeability lasting for a long period and high safety by imparting, in the stage of producing the hydrophilic porous film, hydrophilic characteristic to the surface of a hydrophobic porous film and to the inside of pores. CONSTITUTION:A porous film comprising a hydrophobic polymer 2 is, in the first stage, subjected to diffusion of a soln. of a polyvinyl alcohol/vinyl acetate copolymer 3 obtd. by dissolving the polymer 2 in a solvent having sufficiently high stability and wettability for the polymer. Then, the solvent is removed by drying the film in an oven held at, for example, 60-80 deg.C, and a film of the polyvinyl alcohol/vinyl acetate copolymer 3 is formed uniformly on the surface of the porous film and on the inside of pores. The film which has been made hydrophilic is further treated with aq. soln. of a polymer 4 having higher hydrophilic property, such as methyl cellulose, hydroxypropyl cellulose, etc., to diffuse the aq. soln. into the film, and then dried.
JP19431787A 1987-08-05 1987-08-05 Hydrophilic porous film and its production Granted JPS6438103A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19431787A JPS6438103A (en) 1987-08-05 1987-08-05 Hydrophilic porous film and its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19431787A JPS6438103A (en) 1987-08-05 1987-08-05 Hydrophilic porous film and its production

Publications (2)

Publication Number Publication Date
JPS6438103A true JPS6438103A (en) 1989-02-08
JPH0567330B2 JPH0567330B2 (en) 1993-09-24

Family

ID=16322590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19431787A Granted JPS6438103A (en) 1987-08-05 1987-08-05 Hydrophilic porous film and its production

Country Status (1)

Country Link
JP (1) JPS6438103A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5522991A (en) * 1994-07-20 1996-06-04 Millipore Investment Holdings Limited Cellulosic ultrafiltration membrane
EP1101748A1 (en) 1999-11-19 2001-05-23 Central Glass Company, Limited Article with antifogging film and process for producing same
US6531215B2 (en) 1999-11-19 2003-03-11 Central Glass Company, Limited Article with antifogging film and process for producing same
WO2006001528A1 (en) * 2004-06-28 2006-01-05 Kureha Corporation Porous membrane for water treatment and process for producing the same
JP2006239512A (en) * 2005-03-01 2006-09-14 Kureha Corp Porous membrane and production method
JP2007136449A (en) * 2005-10-14 2007-06-07 Millipore Corp Ultrafiltration membranes and methods of manufacturing and using ultrafiltration membranes
JP2008520403A (en) * 2004-09-30 2008-06-19 マクマスター ユニバーシティー Composite material comprising a multilayered hydrophilic coating layer
WO2014077095A1 (en) 2012-11-15 2014-05-22 東洋紡株式会社 Porous hollow fiber membrane
WO2025182956A1 (en) * 2024-02-29 2025-09-04 東レ株式会社 Porous membrane and method for producing porous membrane

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5522991A (en) * 1994-07-20 1996-06-04 Millipore Investment Holdings Limited Cellulosic ultrafiltration membrane
EP1101748A1 (en) 1999-11-19 2001-05-23 Central Glass Company, Limited Article with antifogging film and process for producing same
US6531215B2 (en) 1999-11-19 2003-03-11 Central Glass Company, Limited Article with antifogging film and process for producing same
EP1477466A1 (en) 1999-11-19 2004-11-17 Central Glass Company, Limited Article with antifogging film and process for producing same
WO2006001528A1 (en) * 2004-06-28 2006-01-05 Kureha Corporation Porous membrane for water treatment and process for producing the same
JP2008520403A (en) * 2004-09-30 2008-06-19 マクマスター ユニバーシティー Composite material comprising a multilayered hydrophilic coating layer
JP2006239512A (en) * 2005-03-01 2006-09-14 Kureha Corp Porous membrane and production method
JP2007136449A (en) * 2005-10-14 2007-06-07 Millipore Corp Ultrafiltration membranes and methods of manufacturing and using ultrafiltration membranes
WO2014077095A1 (en) 2012-11-15 2014-05-22 東洋紡株式会社 Porous hollow fiber membrane
US10577393B2 (en) 2012-11-15 2020-03-03 Toyobo Co., Ltd. Porous hollow fiber membrane
WO2025182956A1 (en) * 2024-02-29 2025-09-04 東レ株式会社 Porous membrane and method for producing porous membrane

Also Published As

Publication number Publication date
JPH0567330B2 (en) 1993-09-24

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