Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ
Patent
1988-06-22
1989-10-10
Jones, W. Gary
Plastic and nonmetallic article shaping or treating: processes
Pore forming in situ
210490, 21050023, 264129, 264298, 264DIG18, 427246, B29C 4124
Patent
active
048730335
ABSTRACT:
The invention relates to a hyperfiltration membrane containing a supporting layer and a separation layer. The membrane is characterized in that the separation layer consists of a crosslinked monomolecular film of molecules, the molecules of the separation layer in the uncrosslinked state being surfactants or surfactant-like lipoids containing at least one hydrophobic chain and at least one hydrophilic group, the hydrophobic chains of these molecules being oriented mainly perpendicularly to the plane of the membrane and parallel to the diffusion direction after crosslinking and the molecules of the separation layer being crosslinked with one another through functional groups in at least one of their hydrophobic chains and/or through functional groups in at least one of their hydrophilic groups.
The invention also relates to a process for the production of hyperfiltration membranes in which the surfactant molecules or the surfactant-like lipoid molecules are spread out under a certain spreading pressure or occupying an average space over the surface of an aqueous solution or at the interface between an aqueous solution and a liquid immiscible therewith, the surfactant molecules or the surfactant-like lipoid molecules are crosslinked with one another and the separation layer crosslinked in this way is applied to a supporting membrane.
REFERENCES:
patent: 3129146 (1964-04-01), Hassler
patent: 3593855 (1971-07-01), Stana
patent: 3780147 (1973-12-01), Stana
patent: 3892665 (1975-07-01), Steigelmann
patent: 4279855 (1981-07-01), Ward
Angew. Chem. Int. Ed. Engc. 20 (1981) No. 1, pp. 90-91.
Macromolecules 1980, 13, No. 6, Nov-Dec. 1980, pp. 1478-1483.
Thin Solid Films 68, 1980, pp. 91-98.
Heckmann Klaus
Manecke Georg
Pfannenmuller Beate
Ring Klaus
Ringsdorf Helmut
Jones W. Gary
Klaus Heckmann
Schneider Walter H.
LandOfFree
Process for the production of hyperfiltration membranes does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for the production of hyperfiltration membranes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the production of hyperfiltration membranes will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1956113