FR2116306A1 - Microporous membrane prepn - by controlled neutralisation of acidic solns of polymers - Google Patents

Microporous membrane prepn - by controlled neutralisation of acidic solns of polymers

Info

Publication number
FR2116306A1
FR2116306A1 FR7043948A FR7043948A FR2116306A1 FR 2116306 A1 FR2116306 A1 FR 2116306A1 FR 7043948 A FR7043948 A FR 7043948A FR 7043948 A FR7043948 A FR 7043948A FR 2116306 A1 FR2116306 A1 FR 2116306A1
Authority
FR
France
Prior art keywords
neutralisation
acidic
solns
prepn
polymers
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
FR7043948A
Other languages
French (fr)
Other versions
FR2116306B1 (en
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.)
Omnium de Prospective Industrielle SA
Original Assignee
Omnium de Prospective Industrielle SA
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 Omnium de Prospective Industrielle SA filed Critical Omnium de Prospective Industrielle SA
Priority to FR7043948A priority Critical patent/FR2116306A1/en
Priority to ZA718065A priority patent/ZA718065B/en
Priority to AT1036971A priority patent/AT313592B/en
Priority to IT70982/71A priority patent/IT945813B/en
Publication of FR2116306A1 publication Critical patent/FR2116306A1/en
Application granted granted Critical
Publication of FR2116306B1 publication Critical patent/FR2116306B1/fr
Granted legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/125—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyamides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/121—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyesters, polycarbonates, alkyds
    • D06N3/123—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyesters, polycarbonates, alkyds with polyesters
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
    • D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/02—Details relating to pores or porosity of the membranes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2201/00—Foams characterised by the foaming process
    • C08J2201/04—Foams characterised by the foaming process characterised by the elimination of a liquid or solid component, e.g. precipitation, leaching out, evaporation
    • C08J2201/054—Precipitating the polymer by adding a non-solvent or a different solvent
    • C08J2201/0545—Precipitating the polymer by adding a non-solvent or a different solvent from an aqueous solvent-based polymer composition
    • C08J2201/0547—Precipitating the polymer by adding a non-solvent or a different solvent from an aqueous solvent-based polymer composition the non-solvent being aqueous
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/12—Permeability or impermeability properties
    • D06N2209/121—Permeability to gases, adsorption
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/12—Permeability or impermeability properties
    • D06N2209/121—Permeability to gases, adsorption
    • D06N2209/123—Breathable
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N2209/00—Properties of the materials
    • D06N2209/12—Permeability or impermeability properties
    • D06N2209/126—Permeability to liquids, absorption
    • D06N2209/128—Non-permeable

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Textile Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Proteomics, Peptides & Aminoacids (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

Microporous membranes with a porosity gradient from one surface to the other are prepd. by controlling the speed of neutralisation of an acidic soln contg. a polymer, e.g. polyamides, polyesters, etc; this is achieved by diffusion of the neutralising reagent, e.g NaOH, through the pores of the membrane in the course of its formation. The membranes are air and vapour permeable but liquid impermeable.
FR7043948A 1970-12-07 1970-12-07 Microporous membrane prepn - by controlled neutralisation of acidic solns of polymers Granted FR2116306A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7043948A FR2116306A1 (en) 1970-12-07 1970-12-07 Microporous membrane prepn - by controlled neutralisation of acidic solns of polymers
ZA718065A ZA718065B (en) 1970-12-07 1971-12-01 Improvements relating to microporous membranes
AT1036971A AT313592B (en) 1970-12-07 1971-12-02 Method of making a microporous membrane
IT70982/71A IT945813B (en) 1970-12-07 1971-12-03 PROCEDURE FOR PREPARATION OF SYNTHETIC MICROPOROUS SUBSTANCES WITH A CONTROLLED PORE STRUCTURE AND RESULTING PRODUCTS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7043948A FR2116306A1 (en) 1970-12-07 1970-12-07 Microporous membrane prepn - by controlled neutralisation of acidic solns of polymers

Publications (2)

Publication Number Publication Date
FR2116306A1 true FR2116306A1 (en) 1972-07-13
FR2116306B1 FR2116306B1 (en) 1973-11-30

Family

ID=9065345

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7043948A Granted FR2116306A1 (en) 1970-12-07 1970-12-07 Microporous membrane prepn - by controlled neutralisation of acidic solns of polymers

Country Status (4)

Country Link
AT (1) AT313592B (en)
FR (1) FR2116306A1 (en)
IT (1) IT945813B (en)
ZA (1) ZA718065B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0481517A1 (en) * 1990-10-18 1992-04-22 Dainippon Ink And Chemicals, Inc. Asymmetric polymer membrane and preparation thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0481517A1 (en) * 1990-10-18 1992-04-22 Dainippon Ink And Chemicals, Inc. Asymmetric polymer membrane and preparation thereof

Also Published As

Publication number Publication date
IT945813B (en) 1973-05-10
FR2116306B1 (en) 1973-11-30
ZA718065B (en) 1972-08-30
AT313592B (en) 1974-02-25

Similar Documents

Publication Publication Date Title
GB1528711A (en) Process for preparing a semi-permeable membrane
GB1482914A (en) Semi-permeable polymeric membranes
BE787964A (en) PROCESS FOR PREPARING POROUS COMPOSITE MEMBRANES OR BARRIERS FOR GAS DIFFUSION SYSTEMS
ES363672A1 (en) Process for effecting absorption or removal of gas from a liquid
ES417081A1 (en) Semi-permeable polyvinyl alcohol membranes
GB1391973A (en) Polyvinyl acetal membrane
FR2116790A5 (en) Shoe ventilation - by perforations backed by porous ptfe coated sheet to exclude water
FR2116306A1 (en) Microporous membrane prepn - by controlled neutralisation of acidic solns of polymers
CH481166A (en) Process for the production of water vapor permeable, porous flat structures
GB1398112A (en) Treatment of reverse osmosis/ultrafiltration membrane systems
GB1222053A (en) Process for the manufacture of porous membranes
GB1173179A (en) Method of Producing Micro-Perforated Stainless Steel Sheets
ES337628A1 (en) Process for preparing micro-porous polyurethane resin sheets by casting the resin on a porous sintered thermoplastic polymeric resin support surface
DE3879239D1 (en) METHOD FOR PRODUCING A TWO-LAYER MEMBRANE.
FR2050700A5 (en) Reverse osmosis membrane support
AT292321B (en) Process for the production of microporous, water vapor permeable flat structures
NL7102636A (en) Reverse osmosis appts - with open celled synthetic resin layer between cellulose acetate membrane and plastic support tube
FR2413108A1 (en) PROCESS FOR THE MANUFACTURE OF SEMI-PERMEABLE MEMBRANES
AT285960B (en) Process for the production of microporous, water vapor permeable flat structures
IT963257B (en) MICROPOROUS MEMBRANES OF PHENOLIC POLYETERS
IT1030867B (en) Semipermeable composite membranes esp for fractionation of liquids - with outer polymeric skin active in reverse osmosis or gas permeation and an ultrafiltration membrane
ES417691A1 (en) Ultrafiltration membranes and separation processes
Pevzner et al. Permeation of Helium Through Monolithic and Closed-Pore Glass Membranes
JPS5221422A (en) Process for producing hollow fibers based on polyvinyl alcohol
FR2196969A1 (en) Desalting of hard water by reverse osmosis - using carbon dioxide gas added through permeable membrane for acid pretreatment

Legal Events

Date Code Title Description
ST Notification of lapse