JPS5638104A - Reverse osmotic membrane of cellulose acetate - Google Patents

Reverse osmotic membrane of cellulose acetate

Info

Publication number
JPS5638104A
JPS5638104A JP11486579A JP11486579A JPS5638104A JP S5638104 A JPS5638104 A JP S5638104A JP 11486579 A JP11486579 A JP 11486579A JP 11486579 A JP11486579 A JP 11486579A JP S5638104 A JPS5638104 A JP S5638104A
Authority
JP
Japan
Prior art keywords
cellulose acetate
membrane
degree
reverse osmotic
osmotic 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.)
Pending
Application number
JP11486579A
Other languages
Japanese (ja)
Inventor
Yoshiaki Nakanishi
Kunihiko Sasajima
Hideo Yabune
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.)
Daicel Corp
Original Assignee
Daicel Corp
Daicel Chemical Industries 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 Daicel Corp, Daicel Chemical Industries Ltd filed Critical Daicel Corp
Priority to JP11486579A priority Critical patent/JPS5638104A/en
Publication of JPS5638104A publication Critical patent/JPS5638104A/en
Pending 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
    • B01D71/08—Polysaccharides
    • B01D71/12—Cellulose derivatives
    • B01D71/14—Esters of organic acids
    • B01D71/16—Cellulose acetate

Landscapes

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

Abstract

PURPOSE:To obtain the reverse osmotic membrane excellent in the characteristic and life of the membrane, by producing the cellulose acetate having a melting point indicating a given endothermic peak and the specified degree of acetylation and polymerization. CONSTITUTION:The cellulose acetate having one endothermic peak indicating the melting point in the differential thermal analysis curve or differential scanning calorimetric analysis curve, 56-60% degree of acetylation and 150-350 degree of polymerization, is used as raw material. This raw material is produced for membrane by known casting method to obtain the semipermeable membrance excellent in the performance and durability.
JP11486579A 1979-09-07 1979-09-07 Reverse osmotic membrane of cellulose acetate Pending JPS5638104A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11486579A JPS5638104A (en) 1979-09-07 1979-09-07 Reverse osmotic membrane of cellulose acetate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11486579A JPS5638104A (en) 1979-09-07 1979-09-07 Reverse osmotic membrane of cellulose acetate

Publications (1)

Publication Number Publication Date
JPS5638104A true JPS5638104A (en) 1981-04-13

Family

ID=14648624

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11486579A Pending JPS5638104A (en) 1979-09-07 1979-09-07 Reverse osmotic membrane of cellulose acetate

Country Status (1)

Country Link
JP (1) JPS5638104A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017144358A (en) * 2016-02-15 2017-08-24 株式会社ダイセル Hollow fiber membrane

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5313353A (en) * 1976-07-23 1978-02-06 Toshiba Corp Display tube and its manufacture
JPS53103982A (en) * 1977-02-22 1978-09-09 Nitto Electric Ind Co Ltd Preparation of tubular semipermeable membrane

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5313353A (en) * 1976-07-23 1978-02-06 Toshiba Corp Display tube and its manufacture
JPS53103982A (en) * 1977-02-22 1978-09-09 Nitto Electric Ind Co Ltd Preparation of tubular semipermeable membrane

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017144358A (en) * 2016-02-15 2017-08-24 株式会社ダイセル Hollow fiber membrane

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