GB1415768A - Semi-permeable membranes - Google Patents

Semi-permeable membranes

Info

Publication number
GB1415768A
GB1415768A GB3872073A GB3872073A GB1415768A GB 1415768 A GB1415768 A GB 1415768A GB 3872073 A GB3872073 A GB 3872073A GB 3872073 A GB3872073 A GB 3872073A GB 1415768 A GB1415768 A GB 1415768A
Authority
GB
United Kingdom
Prior art keywords
fibre
solvent
sol
aug
gel
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
Application number
GB3872073A
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
Priority claimed from JP47081408A external-priority patent/JPS523616B2/ja
Priority claimed from JP1887973A external-priority patent/JPS536249B2/ja
Application filed by Toray Industries Inc filed Critical Toray Industries Inc
Publication of GB1415768A publication Critical patent/GB1415768A/en
Expired 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
    • B01D71/40—Polymers of unsaturated acids or derivatives thereof, e.g. salts, amides, imides, nitriles, anhydrides, esters
    • B01D71/401—Polymers based on the polymerisation of acrylic acid, e.g. polyacrylate
    • B01D71/4011—Polymethylmethacrylate
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/24—Formation of filaments, threads, or the like with a hollow structure; Spinnerette packs therefor
    • 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
    • B01D69/08—Hollow fibre membranes
    • 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
    • B01D71/40—Polymers of unsaturated acids or derivatives thereof, e.g. salts, amides, imides, nitriles, anhydrides, esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L33/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • C08L33/04—Homopolymers or copolymers of esters
    • C08L33/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, which oxygen atoms are present only as part of the carboxyl radical
    • C08L33/10—Homopolymers or copolymers of methacrylic acid esters
    • C08L33/12—Homopolymers or copolymers of methyl methacrylate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Artificial Filaments (AREA)

Abstract

1415768 Porous polymethylmethacrylate membrane TORAY INDUSTRIES Inc 16 Aug 1973 [16 Aug 1972 17 Feb 1973] 38720/73 Heading B5B [Also in Division C3] Hydrogel semi-permeable films and fibres are prepared from a mixture of isotactic and syndiotactic polymethylmethacrylates. The structures are prepared by dissolving the mixture in a suitable solvent to form a sol, forming the sol into the desired shape, cooling it to form a gel and then replacing the solvent with water. Hollow fibres may be given by extruding through an annular orifice having an inner tube coaxial with the orifice by which a fluid is injected into the fibre. The fibre is then cooled to below the melting point of the gel by contact with a cooling gas, which is preferably the vapour of a coagulating liquid, and then coagulating the fibre by means of an aqueous non-solvent.
GB3872073A 1972-08-16 1973-08-16 Semi-permeable membranes Expired GB1415768A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP47081408A JPS523616B2 (en) 1972-08-16 1972-08-16
JP1887973A JPS536249B2 (en) 1973-02-17 1973-02-17

Publications (1)

Publication Number Publication Date
GB1415768A true GB1415768A (en) 1975-11-26

Family

ID=26355617

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3872073A Expired GB1415768A (en) 1972-08-16 1973-08-16 Semi-permeable membranes

Country Status (4)

Country Link
DE (1) DE2341392C3 (en)
FR (1) FR2196184B1 (en)
GB (1) GB1415768A (en)
SE (1) SE388130B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385094A (en) 1979-04-30 1983-05-24 Kuraray Co., Ltd. Ethylene-vinyl alcohol hollow fiber membrane and method for the production thereof
EP1048307A2 (en) * 1992-12-04 2000-11-02 Toray Industries, Inc. Dialysis membrane for the preparation of hematopoietic inhibiting factor containing compositions
US8585682B2 (en) 2008-02-09 2013-11-19 Renephra Limited Fluid extraction or filtration device, associated materials and methods

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55148209A (en) * 1979-04-27 1980-11-18 Kuraray Co Ltd Hollow ethylene-vinyl alcohol membrane and its production
EP0092587B1 (en) * 1981-10-30 1986-09-03 Toray Industries, Inc. Polymethyl methacrylate hollow yarn ultra-filtration membrane and process for its production
FR2529464B1 (en) * 1982-07-01 1985-01-18 Hospal Ind

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4385094A (en) 1979-04-30 1983-05-24 Kuraray Co., Ltd. Ethylene-vinyl alcohol hollow fiber membrane and method for the production thereof
EP1048307A2 (en) * 1992-12-04 2000-11-02 Toray Industries, Inc. Dialysis membrane for the preparation of hematopoietic inhibiting factor containing compositions
EP1048307A3 (en) * 1992-12-04 2002-05-02 Toray Industries, Inc. Dialysis membrane for the preparation of hematopoietic inhibiting factor containing compositions
US8585682B2 (en) 2008-02-09 2013-11-19 Renephra Limited Fluid extraction or filtration device, associated materials and methods
US9808377B2 (en) 2008-02-09 2017-11-07 Renephra Limited Fluid extraction or filtration device, associated materials and methods

Also Published As

Publication number Publication date
FR2196184A1 (en) 1974-03-15
DE2341392A1 (en) 1974-03-07
DE2341392C3 (en) 1975-10-30
FR2196184B1 (en) 1976-11-19
SE388130B (en) 1976-09-27
DE2341392B2 (en) 1975-03-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19930815