FR2433357A1 - Reverse osmosis membrane comprising cellulose deriv. - obtd. from soln. contg. e.g. cellulose acetate (butyrate) methyl or ethyl cellulose, organic solvent and tetra-carboxylic acid - Google Patents

Reverse osmosis membrane comprising cellulose deriv. - obtd. from soln. contg. e.g. cellulose acetate (butyrate) methyl or ethyl cellulose, organic solvent and tetra-carboxylic acid

Info

Publication number
FR2433357A1
FR2433357A1 FR7824033A FR7824033A FR2433357A1 FR 2433357 A1 FR2433357 A1 FR 2433357A1 FR 7824033 A FR7824033 A FR 7824033A FR 7824033 A FR7824033 A FR 7824033A FR 2433357 A1 FR2433357 A1 FR 2433357A1
Authority
FR
France
Prior art keywords
cellulose
tetracarboxylic acid
organic solvent
obtd
methyl
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
FR7824033A
Other languages
French (fr)
Other versions
FR2433357B1 (en
Inventor
Tadahiro Uemura
Masaru 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 FR7824033A priority Critical patent/FR2433357A1/en
Publication of FR2433357A1 publication Critical patent/FR2433357A1/en
Application granted granted Critical
Publication of FR2433357B1 publication Critical patent/FR2433357B1/fr
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
    • 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)

Abstract

The membrane consists of a cellulose derivative 0.2 piece/0.844 mm2 void coefficient and 3x10-10 g3/cm7.atm3 A3/B wher A is water permeating constant (g/cm2.sec. atm), and B is salt permeating constant (cm/sec.). The membrane is obtd. from a membrane producing solution of a cellulose derivative, organic solvent, and tetracarboxylic acid of formula R-(CO2H)4, where R is tetravalent aliphatic or alicyclic organic group of 2-10C. The cellulose derivative is cellulose acetate, cellulose acetate butyrate, methyl cellulose, or ethyl cellulose. The organic solvent is acetone, DMC, dioxane, DMSO acetic acid, diethylene glycol, diacetone alcohol, acetonitrile, or nitromethane. The acid is butane tetracarboxylic acid, ethylene tetracarboxylic acid, dicyclobutane, tetracarboxylic acid, cyclopentane tetracarboxylic acid or cyclopropane tetracarboxylic acid.
FR7824033A 1978-08-17 1978-08-17 Reverse osmosis membrane comprising cellulose deriv. - obtd. from soln. contg. e.g. cellulose acetate (butyrate) methyl or ethyl cellulose, organic solvent and tetra-carboxylic acid Granted FR2433357A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7824033A FR2433357A1 (en) 1978-08-17 1978-08-17 Reverse osmosis membrane comprising cellulose deriv. - obtd. from soln. contg. e.g. cellulose acetate (butyrate) methyl or ethyl cellulose, organic solvent and tetra-carboxylic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7824033A FR2433357A1 (en) 1978-08-17 1978-08-17 Reverse osmosis membrane comprising cellulose deriv. - obtd. from soln. contg. e.g. cellulose acetate (butyrate) methyl or ethyl cellulose, organic solvent and tetra-carboxylic acid

Publications (2)

Publication Number Publication Date
FR2433357A1 true FR2433357A1 (en) 1980-03-14
FR2433357B1 FR2433357B1 (en) 1983-04-15

Family

ID=9211891

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7824033A Granted FR2433357A1 (en) 1978-08-17 1978-08-17 Reverse osmosis membrane comprising cellulose deriv. - obtd. from soln. contg. e.g. cellulose acetate (butyrate) methyl or ethyl cellulose, organic solvent and tetra-carboxylic acid

Country Status (1)

Country Link
FR (1) FR2433357A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1528016A (en) * 1966-05-02 1968-06-07 Aerojet General Co Membrane for reverse osmosis, and its manufacturing process
US3673084A (en) * 1966-01-17 1972-06-27 Aerojet General Co Reverse osmosis and process and composition for manufacturing cellulose acetate membranes wherein the swelling agent is a di-or tri-basic aliphatic acid
US4026978A (en) * 1975-07-17 1977-05-31 The United States Of America As Represented By The Secretary Of The Interior Method of making asymmetric cellulose triacetate membranes
FR2351147A1 (en) * 1976-05-14 1977-12-09 Sartorius Membranfilter Gmbh PROCESS FOR MANUFACTURING MEMBRANES FOR OSMOTIC SEPARATION
US4062782A (en) * 1970-02-26 1977-12-13 Canadian Patents And Development Ltd Reverse osmosis membranes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3673084A (en) * 1966-01-17 1972-06-27 Aerojet General Co Reverse osmosis and process and composition for manufacturing cellulose acetate membranes wherein the swelling agent is a di-or tri-basic aliphatic acid
FR1528016A (en) * 1966-05-02 1968-06-07 Aerojet General Co Membrane for reverse osmosis, and its manufacturing process
US4062782A (en) * 1970-02-26 1977-12-13 Canadian Patents And Development Ltd Reverse osmosis membranes
US4026978A (en) * 1975-07-17 1977-05-31 The United States Of America As Represented By The Secretary Of The Interior Method of making asymmetric cellulose triacetate membranes
FR2351147A1 (en) * 1976-05-14 1977-12-09 Sartorius Membranfilter Gmbh PROCESS FOR MANUFACTURING MEMBRANES FOR OSMOTIC SEPARATION

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXRV/70 *

Also Published As

Publication number Publication date
FR2433357B1 (en) 1983-04-15

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