Filtration membrane for oleophilic organic liquids, method for p

Details Filtration membrane for oleophilic organic liquids, method for p Filtration membrane for oleophilic organic liquids, method for p

1996-11-07

1999-08-03

Fortuna, Ana

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210649, 210654, 210490, 210799, 264 41, 264 451, B01D 6100

Patent

active

059321040

ABSTRACT:
The invention is to provide a filtration membrane for oleophilic organic liquids, which has reduced filtration resistance and increased filtration efficiency and of which the filtration capacity can be freely designed, to provide a method for producing the membrane, and to provide a method for filtering oleophilic organic liquids. The filtration membrane 3 is made of an oleophilic polymer material having a three-dimensional crosslink structure. The oleophilic polymer material is in a gel-like or dry glue-like condition. The inter-crosslink spaces 10 in the three-dimensional crosslink structure are filled with molecules 2 of an oleophilic organic liquid capable of passing through the spaces. Desirably, the inter-crosslink spaces in the three-dimensional crosslink structure are larger than the molecule of the oleophilic organic liquid but are not larger than 1000 nm in terms of their mean diameter. Also desirably, the oleophilic polymer material is supported by a support.

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patent: 5360530 (1994-11-01), Gould et al.
patent: 5811379 (1998-09-01), Rossi et al.

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