Back to results
US 6,521,012 B2Granted
Oleophobic coated membranes
AssigneePall Corporation
InventorsSteven Lamon, Richard McDonogh
Life of this patent
Estimating the term…
Abstract
The present invention relates to oleophobic filtration media including polymeric membranes and other substrates that are coated with polymerized substituted or unsubstituted para-xylene. A method of coating such substrates with polymerized substituted or unsubstituted para-xylene is also provided. The coated substrates possess both hydrophobic (water repellent) and oleophobic (oil repellent) properties.
Claims29
A coated filter comprising a polymeric substrate and a coating, the coating comprising a polymeric para-xylene.
A method of producing a coated filter, comprising the steps of:
- providing a para-xylene dimer and a polymeric substrate;
- vaporizing the para-xylene dimer to form a para-xylene dimer vapor;
- pyrolyzing the para-xylene dimer vapor to form a reactive para-xylene monomer;
- depositing the reactive para-xylene monomer on the polymeric substrate, whereby a poly-para-xylene coating is formed on the substrate;
- and
- recovering a coated filter.
3 more elements
Dependencies are inferred from the claim text.