Other

Mahle International Gmbh

Thomas Haring and Rima Haring

Daimler Ag

Universitãt Stuttgart

Haring, Thomas

Linkov, Vladimir

Martin Hein

Jochen Kerres

Thomas Häring

Volker Oltmann

Birgit Renz

Wei Zhang

Jens Desens

Chy-Ming Tang

Andreas Ullrich

Katharina Merz

Uli Kolbe

Frank Schönberger

Armin Joos

Rainer Laux

Vladimir Linkov

Eva BÖNDEL

A multilayer filter material for an interior air filter element of an air conditioning system of a vehicle may include an ion exchange layer including ion exchange particles and a plurality of further layers. The ion exchange layer may directly adjoin at least one of the plurality of further layers. The plurality of further layers may include an active layer including non-impregnated active carbon particles, and an impregnation layer including impregnated active carbon particles. The active layer may be arranged between the ion exchange layer and the impregnation layer. The ion exchange layer may be hygroscopic and may contain ions which form a toxic environment with water. The impregnation layer may include a component of active carbon particles impregnated with potassium iodide and a component of active carbon particles impregnated with potassium carbonate. The component impregnated with potassium iodide may be greater than the component impregnated with potassium carbonate.

Air filter comprising a multilayer filter material

Ionomers and ionomer membranes, consisting of a non-fluorinated or partly fluorinated non-, partly or fully-aromatic main chain and a non- or partly-fluorinated side chain with ionic groups or their non-ionic precursors, have a positive impact on the proton conductivity of the ionomers. Various processes produce these polymeric proton conductors. The membranes are useful for fuel cell applications.

Ionomers with ionic groups in the side chain

Ionomers and ionomer membranes, consisting of a non-fluorinated or partly fluorinated non-, partly or fully-aromatic main chain and a non- or partly-fluorinated side chain with ionic groups or their non-ionic precursors, have a positive impact on the proton conductivity of the ionomers. Various processes produce these polymeric proton conductors.

Various blends and blend membranes from low-molecular hydroxymethylene-oligo-phosphonic acids R&#x2014;C(POH)(OH)and polymers, the group R representing any organic group, the polymers containing cation exchanger groups or their nonionic precursors of the type SOX, X being a halogen, OH, OMe, NRR, ORwith Me being any metal cation or ammonium cation, R, Rbeing H or any aryl- or alkyl group, PDX, COX and/or basic groups such as primary, secondary or tertiary amino groups, imidazole groups, pyridine groups, pyrazole groups etc. and/or OH groups. Such membranes may also include polymers that are modified with the 1-hydroxymethylene-1,1-bisphosphonic acid group. The polymers may be formed by reacting polymers which contain carboxylic acid groups or carboxylic halide groups &#x2014;COHal (Hal=F, Cl, Br, I) with phosphite compounds or by reacting polymeric aldehydes or polymeric keto compounds with phosphite esters while carrying out an amine catalysis, an oxidation of the intermediary hydroxyphosphonic acid with MnOor another oxidant.

Phosphonic acid-containing blends and phosphonic acid-containing polymers

Growing community of inventors

Stuttgart, Germany

Martin Hein