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JPS56121603A - Composite membrane for reverse osmotic separation of lower alcohol and reverse osmotic separation of lower alcohol - Google Patents

Composite membrane for reverse osmotic separation of lower alcohol and reverse osmotic separation of lower alcohol

Info

Publication number
JPS56121603A
JPS56121603A JP2555580A JP2555580A JPS56121603A JP S56121603 A JPS56121603 A JP S56121603A JP 2555580 A JP2555580 A JP 2555580A JP 2555580 A JP2555580 A JP 2555580A JP S56121603 A JPS56121603 A JP S56121603A
Authority
JP
Japan
Prior art keywords
membrane
reverse osmotic
lower alcohol
osmotic separation
composite membrane
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
JP2555580A
Other languages
Japanese (ja)
Other versions
JPS6259610B2 (en
Inventor
Masaru Kurihara
Naokatsu Kanamaru
Tadahiro Uemura
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 JP2555580A priority Critical patent/JPS56121603A/en
Priority to AT80901335T priority patent/ATE15607T1/en
Priority to DE8080901335T priority patent/DE3071096D1/en
Priority to PCT/JP1980/000165 priority patent/WO1981000217A1/en
Priority to EP80901335A priority patent/EP0044872B1/en
Publication of JPS56121603A publication Critical patent/JPS56121603A/en
Publication of JPS6259610B2 publication Critical patent/JPS6259610B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Separation Using Semi-Permeable Membranes (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To effectively separate alcohol components from an aqueous lower alcohol soln. subjecting the same to reverse osmotic separation by using the composite membrane using a membrane consisting of a hydrophilic crosslinked polymer as a barrier membrane and a porous membrane consisting of a hydrophobic polymer as a supporting membrane.
CONSTITUTION: A membrane consisting of a hydrophilic crosslinked polymer which has ≥150Å thickness, has ≥90% lower alcohol expulsion rates and is substantially insoluble to lower alcohols is formed as a barrier layer on a supporting membrane. A porous membrane having beforehand been made by using a hydrophobic polymer is used for the supporting membrane. The resultant composite membrane is used as a reverse osmotic membrane, so that an aqueous soln. contg. about 1W15% lower alcohols is subjected to reverse osmotic separation under operating conditions of about 30 W about 100kg/cm2 pressures. According to this method, about 10 W about 20% high-concn. condensate whose concn. is higher by about ≥2% than that of the above-described aqueous soln. contg. lower alcohols is obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP2555580A 1979-07-20 1980-02-29 Composite membrane for reverse osmotic separation of lower alcohol and reverse osmotic separation of lower alcohol Granted JPS56121603A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2555580A JPS56121603A (en) 1980-02-29 1980-02-29 Composite membrane for reverse osmotic separation of lower alcohol and reverse osmotic separation of lower alcohol
AT80901335T ATE15607T1 (en) 1979-07-20 1980-07-21 PROCESS FOR SELECTIVE SEPARATION OF WATER-SOLUBLE, VALUABLE MATERIALS FROM AQUEOUS SOLUTIONS.
DE8080901335T DE3071096D1 (en) 1979-07-20 1980-07-21 Process for selectively separating water-soluble valuable materials from an aqueous solution containing same
PCT/JP1980/000165 WO1981000217A1 (en) 1979-07-20 1980-07-21 Process for selectively separating water-soluble valuable materials from an aqueous solution containing same
EP80901335A EP0044872B1 (en) 1979-07-20 1980-07-21 Process for selectively separating water-soluble valuable materials from an aqueous solution containing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2555580A JPS56121603A (en) 1980-02-29 1980-02-29 Composite membrane for reverse osmotic separation of lower alcohol and reverse osmotic separation of lower alcohol

Publications (2)

Publication Number Publication Date
JPS56121603A true JPS56121603A (en) 1981-09-24
JPS6259610B2 JPS6259610B2 (en) 1987-12-11

Family

ID=12169191

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2555580A Granted JPS56121603A (en) 1979-07-20 1980-02-29 Composite membrane for reverse osmotic separation of lower alcohol and reverse osmotic separation of lower alcohol

Country Status (1)

Country Link
JP (1) JPS56121603A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61133102A (en) * 1984-11-30 1986-06-20 ミリポア・コーポレイシヨン Porous film having hydrophilic surface and manufacture thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54107882A (en) * 1978-02-13 1979-08-24 Toray Ind Inc Semipermeable membrane

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54107882A (en) * 1978-02-13 1979-08-24 Toray Ind Inc Semipermeable membrane

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61133102A (en) * 1984-11-30 1986-06-20 ミリポア・コーポレイシヨン Porous film having hydrophilic surface and manufacture thereof
JPH0475051B2 (en) * 1984-11-30 1992-11-27
JPH0751550A (en) * 1984-11-30 1995-02-28 Millipore Corp Method for formation of coated porous membrane

Also Published As

Publication number Publication date
JPS6259610B2 (en) 1987-12-11

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