Phase-separation member
AssigneeMadison Filter 981 Limited
InventorsRichard Patrick Lydon, Fredrick Doran
Life of this patent
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Abstract
A phase-separation member comprises a porous substrate (11) containing void spaces, a microporous polymer material (14) which at least partially impregnates the porous substrate by entering into the void spaces, and a layer of a fluoropolymer applied to the outer face of the coagulated polymer material so that the layer (16) of fluoropolymer material remains predominantly at the surface.
Claims22
A durably bonded phase-separation member comprising a porous substrate of a low surface energy material having void spaces therein, a microporous polymer material at least partially impregnating said porous substrate, and a fluoropolymer layer applied to an outer surface of said microporous polymer material so as to remain predominantly at said outer surface, said microporous polymer material serving to provide a durable bond between said fluoropolymer layer and said low surface energy material of said porous substrate.
A durably bonded phase-separation member comprising a porous substrate of a low surface energy material having void spaces therein, impregnated to at least half of a thickness of said substrate with a microporous polymer material and coated on an outer surface of said microporous polymer material with a fluoropolymer layer applied so as to remain predominantly at said outer surface, said microporous polymer material forming a durable bond between said fluoropolymer layer and said low surface energy material, and said phase-separation member having a finer pore size than said porous substrate alone.
Dependencies are inferred from the claim text.