RESILIENT CATION EXCHANGE MEMBRANES
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United States of America Patent
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Issued Date -
Dec 4, 2014
app pub date -
Aug 20, 2014
filing date -
Oct 4, 2010
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Abandoned
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Abstract
A resilient cation exchange membrane including a porous matrix impregnated with a cross-linked homogenous ion-transferring polymer that fills the pores and substantially covers the surfaces of the porous matrix. The cross-linked homogenous ion-transferring polymer formed by polymerizing a homogeneous solution including (i) a hydrophilic ionic monomer selected from a group consisting of 2-acrylamido-2-methyl-1-propanesulfonic acid, 2-acrylamido-2-methyl-1-propanesulfonic acid salts, sodium 4-vinylbenzenesulfonate, and 3-sulfopropyl acrylate potassium, with (ii) a hydrophobic cross-linking oligomer selected from a group consisting of polyurethane oligomer diacrylate, polyester oligomer diacrylate, epoxy oligomer diacrylate, polybutadiene oligomer diacrylate, silicone diacrylate, dimethacrylate counterparts thereof, polyurethane oligomers having three or more vinyl groups, polyester oligomers having three or more vinyl groups, and mixtures thereof.
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