JPS5472777A - Semipermeable membrane - Google Patents

Semipermeable membrane

Info

Publication number
JPS5472777A
JPS5472777A JP14046977A JP14046977A JPS5472777A JP S5472777 A JPS5472777 A JP S5472777A JP 14046977 A JP14046977 A JP 14046977A JP 14046977 A JP14046977 A JP 14046977A JP S5472777 A JPS5472777 A JP S5472777A
Authority
JP
Japan
Prior art keywords
aromatic
groups
polymer
membrane
repetitive units
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
JP14046977A
Other languages
Japanese (ja)
Other versions
JPS612004B2 (en
Inventor
Masaru Kurihara
Kiyoshi Okada
Tetsuo Inoue
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
Priority to JP14046977A priority Critical patent/JPS5472777A/en
Publication of JPS5472777A publication Critical patent/JPS5472777A/en
Publication of JPS612004B2 publication Critical patent/JPS612004B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • B01D71/58—Other polymers having nitrogen in the main chain, with or without oxygen or carbon only
    • B01D71/62—Polycondensates having nitrogen-containing heterocyclic rings in the main chain

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

PURPOSE:To obtain a reverse osmosis membrane of superior heat resistance, chemical resistance, pressure resistance and oxidation resistance by making the membrane with the polymer having repetitive units containing specific quinazolone rings as a main component. CONSTITUTION:The membrane is prepared by using the polymer having repetitive units including quinazolone rings shown by the formula I [where Ar is aromatic groups, R is (un)saturated aliphatic, alicyclic, aromatic or heterocyclic groups]. The polyquinazolone-polyamide copolymer having the repetitive units of the formula II in particular [where Ar is aromatic groups, R R' R'' are (un)saturated aromatic, alicyclic, aromatic or heterocylic groups, i and j are molar fractions and i + j = 1, i = 0.15 to 1, praticularly perferably 0.5 to 1] is desirable as abovementioned polymer.
JP14046977A 1977-11-22 1977-11-22 Semipermeable membrane Granted JPS5472777A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14046977A JPS5472777A (en) 1977-11-22 1977-11-22 Semipermeable membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14046977A JPS5472777A (en) 1977-11-22 1977-11-22 Semipermeable membrane

Publications (2)

Publication Number Publication Date
JPS5472777A true JPS5472777A (en) 1979-06-11
JPS612004B2 JPS612004B2 (en) 1986-01-22

Family

ID=15269313

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14046977A Granted JPS5472777A (en) 1977-11-22 1977-11-22 Semipermeable membrane

Country Status (1)

Country Link
JP (1) JPS5472777A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2467223A1 (en) * 1979-10-09 1981-04-17 Nitto Electric Ind Co SELECTIVE PERMEABLE MEMBRANES CONTAINING POLYQUINAZOLONE POLYMER
JPS5837024A (en) * 1981-08-29 1983-03-04 Nitto Electric Ind Co Ltd Composite membrane for gas separation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2467223A1 (en) * 1979-10-09 1981-04-17 Nitto Electric Ind Co SELECTIVE PERMEABLE MEMBRANES CONTAINING POLYQUINAZOLONE POLYMER
DE3038012A1 (en) * 1979-10-09 1981-04-23 Nitto Electric Industrial Co., Ltd., Ibaraki, Osaka SELECTIVELY PERMEABLE MEMBRANE BASED ON A POLYCHINAZOLONE POLYMER
JPS5837024A (en) * 1981-08-29 1983-03-04 Nitto Electric Ind Co Ltd Composite membrane for gas separation
JPS6252613B2 (en) * 1981-08-29 1987-11-06 Nitto Electric Ind Co

Also Published As

Publication number Publication date
JPS612004B2 (en) 1986-01-22

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