Back to results
US 7,387,732 B2Granted
Organic-inorganic membranes
AssigneeRima Haring
InventorsJochen Kerres, Thomas Häring
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeRima Haring
InventorsJochen Kerres, Thomas Häring
Estimating the term…
The invention relates to organic/inorganic hybrid polymer blends and hybrid polymer blend membranes that are composed of: one polymer acid halide containing SO2X, POX2 or COX groups (X═, Cl, Br, I); one elemental or metallic oxide or hydroxide, obtained by the hydrolysis and/or the sol/gel reaction of an elemental and/or organometallic compound during the membrane forming process and/or by subsequently treating the membrane in aqueous acidic, alkaline or neutral electrolytes. The invention further relates to hybrid blends and hybrid blend membranes containing polymers that carry SO3H, PO3H2 and/or COOH groups, obtained by aqueous, alkaline or acidic hydrolysis of the polymer acid halides contained in the polymer blend or the polymer blend membrane. The invention also relates to methods for producing the inventive hybrid blends and hybrid blend membranes.
Process for preparing a membrane comprising providing a polymer solution by mixing in a solvent at least one polymeric acid halide with SO2X, POX2, COX or BX2 groups where X═F, Cl, Br, or I, and at least one metal organic or element organic compound selected from the group consisting of metal/element alkoxides/esters of Ti, Zr, Sn, Si, B, or Al, metal acetylacetonates, mixed compounds of metal/elemental alkoxides and metal acetylacetonates, and/or organic amino compounds of Ti, Zr, Sn, Si, B, or Al;
Dependencies are inferred from the claim text.