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IT1053401B - POROUS MEMBRANE AND PROCEDURE TO PREPARE IT - Google Patents

POROUS MEMBRANE AND PROCEDURE TO PREPARE IT

Info

Publication number
IT1053401B
IT1053401B IT47727/76A IT4772776A IT1053401B IT 1053401 B IT1053401 B IT 1053401B IT 47727/76 A IT47727/76 A IT 47727/76A IT 4772776 A IT4772776 A IT 4772776A IT 1053401 B IT1053401 B IT 1053401B
Authority
IT
Italy
Prior art keywords
prepare
procedure
porous membrane
porous
membrane
Prior art date
Application number
IT47727/76A
Other languages
Italian (it)
Original Assignee
Aligena Ag
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 Aligena Ag filed Critical Aligena Ag
Application granted granted Critical
Publication of IT1053401B publication Critical patent/IT1053401B/en

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
    • B01D71/08—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
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0093—Chemical modification
    • B01D67/00931—Chemical modification by introduction of specific groups after membrane formation, e.g. by grafting

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Transplantation (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
IT47727/76A 1975-01-23 1976-01-21 POROUS MEMBRANE AND PROCEDURE TO PREPARE IT IT1053401B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH82775A CH614127A5 (en) 1975-01-23 1975-01-23 Porous membrane and method for production thereof

Publications (1)

Publication Number Publication Date
IT1053401B true IT1053401B (en) 1981-08-31

Family

ID=4196116

Family Applications (1)

Application Number Title Priority Date Filing Date
IT47727/76A IT1053401B (en) 1975-01-23 1976-01-21 POROUS MEMBRANE AND PROCEDURE TO PREPARE IT

Country Status (6)

Country Link
JP (1) JPS5723698B2 (en)
CH (1) CH614127A5 (en)
DE (1) DE2505254A1 (en)
FR (1) FR2298570A1 (en)
GB (1) GB1504261A (en)
IT (1) IT1053401B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3066996D1 (en) * 1979-09-19 1984-04-19 Aligena Ag Porous semipermeable cellulose acetate membranes modified by ionic groups, process for their production and their use
EP0041239A3 (en) * 1980-06-04 1982-05-12 Ciba-Geigy Ag Stable concentrated liquid preparations of non metalliferous dyes, their preparation process and their use
IL63638A0 (en) * 1980-09-16 1981-11-30 Aligena Ag Semipermeable composite membranes,their manufacture and their use
ZA816730B (en) * 1981-03-06 1982-10-27 Ciba Geigy Process for the preparation of concentrated aqueous compositions of anionic dyes
DE3174666D1 (en) * 1981-03-06 1986-06-26 Ciba Geigy Ag Process for producing concentrated aqueous dyestuff preparations of anionic paper or wool dyes
CH652313A5 (en) * 1981-08-25 1985-11-15 Ciba Geigy Ag METHOD FOR PRODUCING CONCENTRATED AQUEOUS PREPARATIONS OF SYNTHETIC ANIONIC DISPERGERS.
CH647021A5 (en) * 1981-09-22 1984-12-28 Ciba Geigy Ag METHOD FOR PRODUCING STORAGE-STABLE BRIGHTENER FORMULATIONS.
CH648583A5 (en) * 1981-09-29 1985-03-29 Ciba Geigy Ag METHOD FOR THE PRODUCTION OF STORAGE-STABLE DYE PREPARATIONS.
CH654424A5 (en) * 1983-03-25 1986-02-14 Ciba Geigy Ag METHOD FOR PREVENTING THE GELLING OF CONCENTRATED AQUEOUS PHOTOACTIVATOR SOLUTIONS.
JPS59182862A (en) * 1983-04-01 1984-10-17 Canon Inc Apparatus for purification of dye
JPS59182863A (en) * 1983-04-01 1984-10-17 Canon Inc Apparatus for purification of dye
JPS59182861A (en) * 1983-04-01 1984-10-17 Canon Inc Apparatus for purification of dye
EP1200179B8 (en) * 1999-07-30 2007-02-21 Genentech, Inc. Charged filtration membranes and uses therefor

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2419930A1 (en) * 1973-04-30 1974-11-07 Dorr Oliver Inc ULTRAFILTRATION MEMBRANE AND METHOD OF MANUFACTURING THEREOF
JPS5210670B2 (en) * 1973-05-16 1977-03-25
DE2437594A1 (en) * 1974-08-05 1976-02-26 Riedel De Haen Ag Azo contg. cellulosic ion exchange resins

Also Published As

Publication number Publication date
FR2298570A1 (en) 1976-08-20
DE2505254A1 (en) 1976-07-29
CH614127A5 (en) 1979-11-15
DE2505254C2 (en) 1987-11-19
JPS5199695A (en) 1976-09-02
GB1504261A (en) 1978-03-15
FR2298570B1 (en) 1979-02-02
JPS5723698B2 (en) 1982-05-20

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