Composite membranes, processes for their preparation and...

Details Composite membranes, processes for their preparation and... Composite membranes, processes for their preparation and...

B - Operations, Transporting

01

D

18/16, 182/15.4,

B01D 71/54 (2006.01) B01D 67/00 (2006.01) B01D 69/12 (2006.01) C07C 7/144 (2006.01)

Patent

CA 1323474

Composite membranes, processes for their preparation and their use A b s t r a c t Composite membranes of a macroporous filler- containing membrane of at least two incompatible polymers and a pore-free polyurethane membrane applied there to exhibit an improved action in the removal of benzenes optionally substituted by lower alkyl radicals, hydroxyl, chlorine or bromine from their mixtures with aliphatic and/or cycloaliphatic hydrocarbons, alcohols, ethers, ketones and/or carboxylic acid esters or from effluent. Le A 26 021 - Foreign countries

595707

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