DE2835890C2 - - Google Patents

Info

Publication number
DE2835890C2
DE2835890C2 DE19782835890 DE2835890A DE2835890C2 DE 2835890 C2 DE2835890 C2 DE 2835890C2 DE 19782835890 DE19782835890 DE 19782835890 DE 2835890 A DE2835890 A DE 2835890A DE 2835890 C2 DE2835890 C2 DE 2835890C2
Authority
DE
Germany
Prior art keywords
membrane
acid
cellulose
tetracarboxylic acid
weight
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.)
Expired - Fee Related
Application number
DE19782835890
Other languages
German (de)
English (en)
Other versions
DE2835890A1 (de
Inventor
Tadahiro Kyoto Jp Uemura
Masaru Otsu Shiga Jp Kurihara
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 DE19782835890 priority Critical patent/DE2835890A1/de
Publication of DE2835890A1 publication Critical patent/DE2835890A1/de
Application granted granted Critical
Publication of DE2835890C2 publication Critical patent/DE2835890C2/de
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • 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
    • 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
    • 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
    • B01D71/18—Mixed esters, e.g. cellulose acetate-butyrate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
    • B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
    • B01D61/025—Reverse osmosis; Hyperfiltration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2001/00—Use of cellulose, modified cellulose or cellulose derivatives, e.g. viscose, as moulding material
    • B29K2001/08—Cellulose derivatives
    • B29K2001/12—Cellulose acetate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
DE19782835890 1978-08-16 1978-08-16 Membran fuer umgekehrte osmose, verfahren zu deren herstellung und giessloesung zur durchfuehrung des verfahrens Granted DE2835890A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782835890 DE2835890A1 (de) 1978-08-16 1978-08-16 Membran fuer umgekehrte osmose, verfahren zu deren herstellung und giessloesung zur durchfuehrung des verfahrens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782835890 DE2835890A1 (de) 1978-08-16 1978-08-16 Membran fuer umgekehrte osmose, verfahren zu deren herstellung und giessloesung zur durchfuehrung des verfahrens

Publications (2)

Publication Number Publication Date
DE2835890A1 DE2835890A1 (de) 1980-02-28
DE2835890C2 true DE2835890C2 (sl) 1992-04-23

Family

ID=6047177

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19782835890 Granted DE2835890A1 (de) 1978-08-16 1978-08-16 Membran fuer umgekehrte osmose, verfahren zu deren herstellung und giessloesung zur durchfuehrung des verfahrens

Country Status (1)

Country Link
DE (1) DE2835890A1 (sl)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4581140A (en) * 1981-11-25 1986-04-08 Asahi Kasei Kogyo Kabushiki Kaisha Porous regenerated cellulose membrane and process for the preparation thereof
EP0570826A1 (de) * 1992-05-20 1993-11-24 Akzo Nobel N.V. Celluloseacetatmembranen

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3789993A (en) * 1972-01-06 1974-02-05 Eastman Kodak Co Cellulosic reverse osmosis membranes having high flux and high salt rejection

Also Published As

Publication number Publication date
DE2835890A1 (de) 1980-02-28

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee