GB203714A - Improvements in and relating to the manufacture of ultra-filter membranes - Google Patents

Improvements in and relating to the manufacture of ultra-filter membranes

Info

Publication number
GB203714A
GB203714A GB22640/23A GB2264023A GB203714A GB 203714 A GB203714 A GB 203714A GB 22640/23 A GB22640/23 A GB 22640/23A GB 2264023 A GB2264023 A GB 2264023A GB 203714 A GB203714 A GB 203714A
Authority
GB
United Kingdom
Prior art keywords
cloth
coagulating liquid
collodion
vat
trough
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
GB22640/23A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB203714A publication Critical patent/GB203714A/en
Expired 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
    • B01D69/10—Supported membranes; Membrane supports
    • B01D69/106—Membranes in the pores of a support, e.g. polymerized in the pores or voids
    • 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
    • B01D69/10—Supported membranes; Membrane supports
    • 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
    • B01D71/22—Cellulose ethers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S55/00—Gas separation
    • Y10S55/24—Viscous coated filter

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

203,714. Duclaux, J. Sept. 11, 1922, [Convention date]. Single coatings. -Filtering-membranes are formed on a strip of cloth which is guided by rollers so as to dip first into a solution of cellulose ester and then into a coagulating liquid. The cloth passing from a roll a to a roll g is caused by rollers c, d, e to pass through a trough b containing a solution of nitro-cellulose or other cellulose ester and a vat f containing water or other coagulating liquid. The speed of travel is such that the film of collodion is solidified before reaching the roller d. To prevent adhesion the roller d may be covered with porous material, such as cloth or blotting paper, impregnated with the coagulating liquid. More than one vat f may be used. To cover the solvent of the cellulose ester, vapours given off during the passage of the cloth between the trough b and roller d may be collected in a casing which may surround this part of the apparatus. Some solvent may also be recovered from the coagulating liquid. Variations in the texture or thickness of the membrane formed may be rendered visible by adding colouring matter to the liquid in the vat f. Before receiving the collodion the cloth may be moistened with water or a solution which will modify the filtering properties of the film afterwards formed. Instead of using the trough b a jet or film of collodion may be projected from a nozzle on to the cloth on one or both sides thereof.
GB22640/23A 1922-09-11 1923-09-08 Improvements in and relating to the manufacture of ultra-filter membranes Expired GB203714A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR567970T 1922-09-11

Publications (1)

Publication Number Publication Date
GB203714A true GB203714A (en) 1924-06-19

Family

ID=8948169

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22640/23A Expired GB203714A (en) 1922-09-11 1923-09-08 Improvements in and relating to the manufacture of ultra-filter membranes

Country Status (3)

Country Link
US (1) US1720670A (en)
FR (1) FR567970A (en)
GB (1) GB203714A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2316015A (en) * 1996-08-10 1998-02-18 Scapa Group Plc Filtering kaolin particles using a polymer pore filter

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2584387A (en) * 1944-11-06 1952-02-05 Bowser Inc Expendible cartridge filter and method of making same
US3762566A (en) * 1971-08-03 1973-10-02 Abcor Inc Supported semipermeable membranes and process for preparing same
FR2182730B1 (en) * 1972-05-05 1974-09-27 Rhone Poulenc Sa
US3912834A (en) * 1972-06-05 1975-10-14 Kanegafuchi Chemical Ind Process for producing a selectively permeable composite
US4681605A (en) * 1985-06-27 1987-07-21 A/G Technology Corporation Anisotropic membranes for gas separation
GB8522847D0 (en) * 1985-09-16 1985-10-23 Shell Int Research Supported membrane

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2316015A (en) * 1996-08-10 1998-02-18 Scapa Group Plc Filtering kaolin particles using a polymer pore filter
GB2316015B (en) * 1996-08-10 2000-08-30 Scapa Group Plc Polymer pore structure

Also Published As

Publication number Publication date
FR567970A (en) 1924-03-12
US1720670A (en) 1929-07-16

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