SU1195628A1 - COMPOSITION FOR GETTING A SEMI-PERMEABLE MEMBRANE - Google Patents
COMPOSITION FOR GETTING A SEMI-PERMEABLE MEMBRANEInfo
- Publication number
- SU1195628A1 SU1195628A1 SU3687741/05A SU3687741A SU1195628A1 SU 1195628 A1 SU1195628 A1 SU 1195628A1 SU 3687741/05 A SU3687741/05 A SU 3687741/05A SU 3687741 A SU3687741 A SU 3687741A SU 1195628 A1 SU1195628 A1 SU 1195628A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- composition
- formaldehyde
- getting
- semi
- permeable membrane
- Prior art date
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Композиция для получения полупроницаемой мембраны, содержащая поливиниловый спирт, полиэлектролит и сшивающий агент, отличающаяся тем, что, с целью повышения проницаемости мембраны по отношению к низкомолекулярным веществам, повышения прочности в набухшем состоянии, в качестве сшивающего агента композиция содержит продукт конденсации мочевины с формальдегидом при мольном соотношении 1 : 1,3 - 1 : 1,8 и содержания свободного формальдегида 2,5 - 3,0% при следующем содержании компонентов, мас.ч.:Поливиниловый спирт - 74,07 - 76,92Полиэлектролит - 18,52 - 19,23Продукт конденсации мочевины с формальдегидом - 3,85 - 7,41Composition for producing a semipermeable membrane containing polyvinyl alcohol, polyelectrolyte and a crosslinking agent, characterized in that, in order to increase the permeability of the membrane to low molecular weight substances, increase the strength in the swollen state, as a crosslinking agent, the composition contains a condensation product of urea with formaldehyde at molar the ratio of 1: 1.3 - 1: 1.8 and the content of free formaldehyde 2.5 - 3.0% with the following content of components, parts by weight: Polyvinyl alcohol - 74.07 - 76.92Polyelectrolyte - 18.52 - 19 , 2 3Condensation product of urea with formaldehyde - 3.85 - 7.41
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU3687741/05A SU1195628A1 (en) | 1984-01-09 | 1984-01-09 | COMPOSITION FOR GETTING A SEMI-PERMEABLE MEMBRANE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU3687741/05A SU1195628A1 (en) | 1984-01-09 | 1984-01-09 | COMPOSITION FOR GETTING A SEMI-PERMEABLE MEMBRANE |
Publications (1)
Publication Number | Publication Date |
---|---|
SU1195628A1 true SU1195628A1 (en) | 2000-09-20 |
Family
ID=60540850
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU3687741/05A SU1195628A1 (en) | 1984-01-09 | 1984-01-09 | COMPOSITION FOR GETTING A SEMI-PERMEABLE MEMBRANE |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU1195628A1 (en) |
-
1984
- 1984-01-09 SU SU3687741/05A patent/SU1195628A1/en active
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