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Supported hydrophilic membrane

  • US 4,978,451 A
  • Filed: 09/05/1989
  • Issued: 12/18/1990
  • Est. Priority Date: 09/05/1989
  • Status: Expired due to Fees
First Claim
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1. A supported membrane for separating water from a water and hydrocarbon and/or halogenated hydrocarbon mixture, said membrane comprising porous support means (12) forming a first layer for structurally supporting said membrane thereon, said porous support means (12) including two sides (14,16) and a plurality of pores (18) extending therethrough providing fluid communication between said two sides (14,16);

  • and characterized by a nonporous water and water soluble substance permeating membrane (20) supported by said porous support means over each of said pores (18) for selectively permeating only water and water soluble substances through each of said pores (18) from the mixture and enabling a thinner layer of said nonporous membrane over each of said pores and supported sufficient to withstand increased pressures resulting in improved efficiencies of water flow across said membrane.

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