Process for producing functionalized porous composites
AssigneeCelanese International Corporation
InventorsHendrich Chiong, Joseph Brian Scott, Victoria Black
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Abstract
Polymer composite materials are disclosed containing one or more chemical scavengers. The polymer composites are porous and are configured to be contacted with a liquid for removing trace amounts of metals, proteins, polypeptides, polyphenols, other organic compounds, and the like. In order to produce the porous composite polymer product, one or more chemical scavengers are combined with high density polyethylene particles and sintered into a shape. The polyethylene resin acts as a binder trapping or encasing the one or more chemical scavengers in the porous structure.
Claims20
A process for forming a porous composite article comprising:
- forming a molding powder into a desired shape, the molding powder comprising thermoplastic polymer particles combined with a chemical scavenger;
- heating the shape to a temperature of 140° C. to 360° C. for a period of time sufficient to permit the thermoplastic polymer to soften while producing a porous structure having a porosity of at least about 30% and maintaining the shape under pressure, the chemical scavenger being contained within the porous structure;
- and
- thereafter cooling and recovering the porous composite article having a porosity of at least about 30%, the porous composite article having a three dimensional, non-planar shape.
Dependencies are inferred from the claim text.