Porous polymer material for bonding metal-containing ions or for purifying organic molecules
AssigneeInstraction GmbH
InventorsMartin Welter, Christian Meyer, Kristian Lungfiel, Thomas Schwarz
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Abstract
A method for producing porous particles of a cross-linked polymer, and porous particles that can be produced according to the method are disclosed. The porous particles of a crosslinked hydroxy- or amino-group-containing polymer have a relatively low swelling factor. A composite material contains the porous particles dispersed in a continuous aqueous phase. The porous particles, or the composite material, are used for purifying organic molecules and for bonding metals from solutions. A filter cartridge contains the porous particles of a cross-linked polymer or the composite material.
Claims13
Method for producing porous particles from a cross-linked polymer, comprising the following steps:
- (a) applying an organic polymer containing hydroxyl or amino groups onto a porous inorganic carrier material in particulate form, where the inorganic carrier material can be dissolved under aqueous-alkaline conditions at pH>10;
- (b) cross-linking the organic polymer in the pores of the inorganic carrier material;
- and
- (c) dissolving out of the inorganic carrier material to obtain the porous particles from a cross-linked organic polymer, wherein the porous particles have a maximum swelling factor in water of 300% increase, assuming 100% dry particles.
Dependencies are inferred from the claim text.