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US 12,630,706 B2Granted
Membrane comprising a blend of polyarylethersulfone and polyaryletherketone and method for manufacturing thereof
AssigneeSyensqo Specialty Polymers USA, LLC
InventorsDario Aurilia, Emanuele Di Nicolo', Kelly D. Branham, Vida Komer
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Abstract
The present invention relates to a composition for the manufacturing of a porous article, notably a membrane, which comprises a semi-crystalline polymer, an amorphous polymer and at least one water-soluble salt. The present invention also relates to a method for manufacturing said porous article and to its use for purifying fluid(s).
Claims16
A thin film membrane [membrane (Q)], wherein the thin film membrane is formed from a composition [composition (C)], wherein the composition (C) comprises:
- (a) at least one poly(aryl ether ketone) (PAEK) polymer wherein the at least one poly(aryl ether ketone) (PAEK) is a major component of the composition (C),
- (b) at least one poly(aryl ether sulfone) (PAES) polymer in an amount from 10 wt. % to 45 wt. %, and
- (c) at least one compound [compound(S)] comprising a sulfonate or carboxylate salt of a metal selected from the group consisting of alkaline metals, alkaline-earth metals, aluminum, iron, zinc, nickel, copper, palladium and silver, wherein the at least one compound(S) is in an amount from 10 wt. % to 50 wt. %, wherein the amounts are based on the total weight of said composition (C),
- wherein the thin film membrane [membrane (Q)] has a thickness of at least 190 μm and a bubble point from 0.300 μm to 0.400 μm and
- wherein the water permeability of the thin film membrane is maintained or increased as pressure is increased between 1-3 bar.
2 more elements
Dependencies are inferred from the claim text.