Poly(quinoline) membranes
AssigneeEntegris, Inc.
InventorsZhifeng Li, Sina Bonyadi, Pushkara Rao Varanasi
Life of this patent
Estimating the term…
Loading patent…
AssigneeEntegris, Inc.
InventorsZhifeng Li, Sina Bonyadi, Pushkara Rao Varanasi
Estimating the term…
In summary, the disclosure provides certain membranes useful as filter materials in the removal of metal ions, metal particulates, and/or organic contaminants from liquid compositions, in particular liquid compositions used in the microelectronic device industry. The membranes of the disclosure are porous membranes comprised of poly(quinoline) polymers. Advantageously, the poly(quinoline) membranes are thermally stable and hydrolytically stable and can thus be cleaned between uses using acidic material such as dilute hydrochloric acid, without suffering from significant degradation. The poly(quinoline) polymers can be designed to be soluble in certain solvents, thus enabling the manufacture of the corresponding porous membranes by immersion-casting techniques.
A porous filter membrane having a thickness of about 40 μm to about 300 μm and comprising a poly(quinoline) polymer having repeat units of:
Dependencies are inferred from the claim text.