JPS57156003A - Polyamide film of superior selective permeability and its production - Google Patents

Polyamide film of superior selective permeability and its production

Info

Publication number
JPS57156003A
JPS57156003A JP4025681A JP4025681A JPS57156003A JP S57156003 A JPS57156003 A JP S57156003A JP 4025681 A JP4025681 A JP 4025681A JP 4025681 A JP4025681 A JP 4025681A JP S57156003 A JPS57156003 A JP S57156003A
Authority
JP
Japan
Prior art keywords
film
graft
polyamide film
accomplished
polymn
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.)
Pending
Application number
JP4025681A
Other languages
Japanese (ja)
Inventor
Yoshio Nakamura
Shoji Takigami
Fumihiko Kobayashi
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.)
Unitika Ltd
Original Assignee
Unitika 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 Unitika Ltd filed Critical Unitika Ltd
Priority to JP4025681A priority Critical patent/JPS57156003A/en
Publication of JPS57156003A publication Critical patent/JPS57156003A/en
Pending legal-status Critical Current

Links

Landscapes

  • Separation Using Semi-Permeable Membranes (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)

Abstract

PURPOSE: To obtain a polyamide film provided with high water permeability and high solute separability by producing said film in such a way that a hydrophilic monomer having ethylenic unsated. bonds is graft polymerized and is in a noncrystallized state.
CONSTITUTION: A polyamide film is of self-supporting type, and acrylic acid, methacrylic acid, acrylamide, methacrylamide, β-hydroxyethyl acrylate, etc. are enumerated for the hydrophilic vinyl monomer to be graft-polymerized with this film. The graft polymn. is accomplished by irradiating γ rays or acting a polymn. initiator and the noncrystallization is accomplished by introducing oxymethyl radicals to part of the amide bonds. According to such method, many and diversified kind of functional groups are introduced without degrading the solvent resistance and mechanical strength of the raw material film and the selectivity of water and solute is controlled easily.
COPYRIGHT: (C)1982,JPO&Japio
JP4025681A 1981-03-23 1981-03-23 Polyamide film of superior selective permeability and its production Pending JPS57156003A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4025681A JPS57156003A (en) 1981-03-23 1981-03-23 Polyamide film of superior selective permeability and its production

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4025681A JPS57156003A (en) 1981-03-23 1981-03-23 Polyamide film of superior selective permeability and its production

Publications (1)

Publication Number Publication Date
JPS57156003A true JPS57156003A (en) 1982-09-27

Family

ID=12575591

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4025681A Pending JPS57156003A (en) 1981-03-23 1981-03-23 Polyamide film of superior selective permeability and its production

Country Status (1)

Country Link
JP (1) JPS57156003A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272841A2 (en) * 1986-12-23 1988-06-29 Pall Corporation Filtration media
EP0294186A2 (en) * 1987-06-03 1988-12-07 Pall Corporation Activated medium
EP0300428A2 (en) * 1987-07-20 1989-01-25 The Dow Chemical Company Rejection enhancing coatings for reverse osmosis membranes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0272841A2 (en) * 1986-12-23 1988-06-29 Pall Corporation Filtration media
EP0294186A2 (en) * 1987-06-03 1988-12-07 Pall Corporation Activated medium
EP0300428A2 (en) * 1987-07-20 1989-01-25 The Dow Chemical Company Rejection enhancing coatings for reverse osmosis membranes

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