BG50306A2 - Method preparing of a semi-permeable membrane - Google Patents

Method preparing of a semi-permeable membrane

Info

Publication number
BG50306A2
BG50306A2 BG9173490A BG9173490A BG50306A2 BG 50306 A2 BG50306 A2 BG 50306A2 BG 9173490 A BG9173490 A BG 9173490A BG 9173490 A BG9173490 A BG 9173490A BG 50306 A2 BG50306 A2 BG 50306A2
Authority
BG
Bulgaria
Prior art keywords
membranes
semi
ready
permeable membrane
method preparing
Prior art date
Application number
BG9173490A
Inventor
Tsonka I Godzhevargova
Aristotel D Dimov
Stojko P Petrov
Original Assignee
Vissh Khim Tekhnol I T D R As
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 Vissh Khim Tekhnol I T D R As filed Critical Vissh Khim Tekhnol I T D R As
Priority to BG9173490A priority Critical patent/BG50306A2/en
Publication of BG50306A2 publication Critical patent/BG50306A2/en

Links

Landscapes

  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

The method is an additional invention to patent No. 33312 and is used in membrane technologies, and the additionally modified membranes can be used in the dialysis process for desalting, concentrating and buffering biological fluids, enzymes or proteins. The membranes are produced by modifying the ready polyacrylonitrile membranes with a solution of an alkaline base from 10 to 25 percent mass. The saponification of the selective layer is performed at a temperature of 313 to 343 K for 30 to 120 min. As a result of the hydrophilization of the ready membranes, the dialysis coefficients increase without a change in the average size of the initial membrane pores.
BG9173490A 1990-04-11 1990-04-11 Method preparing of a semi-permeable membrane BG50306A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BG9173490A BG50306A2 (en) 1990-04-11 1990-04-11 Method preparing of a semi-permeable membrane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BG9173490A BG50306A2 (en) 1990-04-11 1990-04-11 Method preparing of a semi-permeable membrane

Publications (1)

Publication Number Publication Date
BG50306A2 true BG50306A2 (en) 1992-07-15

Family

ID=3922900

Family Applications (1)

Application Number Title Priority Date Filing Date
BG9173490A BG50306A2 (en) 1990-04-11 1990-04-11 Method preparing of a semi-permeable membrane

Country Status (1)

Country Link
BG (1) BG50306A2 (en)

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