Ion exchange membranes
AssigneeEvoqua Water Technologies Pte. Ltd.
InventorsJuchui Ray Lin, George Y. Gu
Life of this patent
Estimating the term…
Abstract
Highly energy efficient electrodialysis membranes having low operating costs and a novel process for their manufacture are described herein. The membranes are useful in the desalination of water and purification of waste water. They are effective in desalination of seawater due to their low electrical resistance and high permselectivity. These membranes are made by a novel process which results in membranes significantly thinner than prior art commercial electrodialysis membranes. The membranes are produced by polymerizing one or more monofunctional ionogenic monomers with at least one multifunctional monomer in the pores of a porous substrate.
Claims14
An anion exchange membrane, comprising:
- a microporous membrane support having a porous first side and a porous second side and a continuous porous structure extending from said first side to said second side;
- and
- a crosslinked anion transferring polymer filling said continuous porous structure, said polymer formed in the continuous porous structure and comprising the polymerization product of one or more ionogenic monomers, a neutral monomer, and a multifunctional crosslinking monomer, wherein the continuous porous structure comprises pores having a size of about 0.05 microns to about 10 microns.
Dependencies are inferred from the claim text.