CA991776A - Integral (unskinned) high void volume polycarbonate membranes and a dry process for forming same - Google Patents

Integral (unskinned) high void volume polycarbonate membranes and a dry process for forming same

Info

Publication number
CA991776A
CA991776A CA154,032A CA154032A CA991776A CA 991776 A CA991776 A CA 991776A CA 154032 A CA154032 A CA 154032A CA 991776 A CA991776 A CA 991776A
Authority
CA
Canada
Prior art keywords
unskinned
integral
void volume
dry process
forming same
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
CA154,032A
Other languages
English (en)
Other versions
CA154032S (en
Inventor
Robert E. Kesting
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.)
Chemical Systems Inc
Original Assignee
Chemical Systems 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 Chemical Systems Inc filed Critical Chemical Systems Inc
Application granted granted Critical
Publication of CA991776A publication Critical patent/CA991776A/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
    • B01D71/50—Polycarbonates
    • 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
    • B01D67/0011—Casting solutions 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
    • B01D69/02—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor characterised by their properties
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates
    • 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
    • C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Dispersion Chemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Polyesters Or Polycarbonates (AREA)
CA154,032A 1971-10-18 1972-10-17 Integral (unskinned) high void volume polycarbonate membranes and a dry process for forming same Expired CA991776A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19041571A 1971-10-18 1971-10-18

Publications (1)

Publication Number Publication Date
CA991776A true CA991776A (en) 1976-06-22

Family

ID=22701253

Family Applications (1)

Application Number Title Priority Date Filing Date
CA154,032A Expired CA991776A (en) 1971-10-18 1972-10-17 Integral (unskinned) high void volume polycarbonate membranes and a dry process for forming same

Country Status (4)

Country Link
JP (1) JPS5547921B2 (de)
CA (1) CA991776A (de)
DE (1) DE2251066A1 (de)
GB (1) GB1395530A (de)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5193786A (en) * 1975-02-15 1976-08-17 Makurokagatano chukuseni
US4308145A (en) * 1976-03-19 1981-12-29 United States Of America Relatively thick polycarbonate membranes for use in hemodialysis
DE2613072B2 (de) * 1976-03-26 1981-07-16 Siemens AG, 1000 Berlin und 8000 München Implantierbare Elektrode
DE2613052B2 (de) * 1976-03-26 1981-07-23 Siemens AG, 1000 Berlin und 8000 München Implantierbare Kohlenstoffelektrode
DE2932737C2 (de) * 1979-08-13 1983-04-21 Akzo Gmbh, 5600 Wuppertal Polycarbonat-Polyätherblockcopolymere
JPS5827964B2 (ja) * 1979-12-27 1983-06-13 工業技術院長 半透膜の製造方法
JPS588511A (ja) * 1981-07-09 1983-01-18 Toyobo Co Ltd 選択性分離膜
US4715960A (en) * 1983-03-10 1987-12-29 Exxon Research And Engineering Company Method for the modification of polycarbonate membranes, the membranes produced by such method and their use
EP0135760A1 (de) * 1983-08-19 1985-04-03 Bayer Ag Polyether-Polycarbonate für Dialysemembranen
DE4100119A1 (de) * 1991-01-04 1992-07-09 Bayer Ag Verwendung von polyether-polycarbonat-blockcopolymeren als beschichtungen fuer kunststofformkoerper
DE4103680A1 (de) * 1991-02-07 1992-08-13 Agfa Gevaert Ag Farbakzeptorelement fuer das thermosublimationsdruckverfahren

Also Published As

Publication number Publication date
DE2251066A1 (de) 1973-04-26
JPS4849681A (de) 1973-07-13
JPS5547921B2 (de) 1980-12-03
GB1395530A (en) 1975-05-29

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