Patent application number | Description | Published |
20080214719 | Aqueous Formulations Containing Polyaromatic Compounds With Acid Groups - The present invention relates to a process for preparing aqueous formulations (A) comprising at least one polyaromatic compound bearing acid groups, in particular a sulfonated polyaromatic compound, and also aqueous formulations (A) which have been prepared by the process of the invention. Furthermore, the present invention relates to a process for preparing dried formulations (B) by removing the water from the aqueous formulations (A) and also the dried formulations (B) themselves. The present invention further provides a formulation (C) comprising the dried formulation (B) of the invention and water or the formulation A of the invention and a water-comprising formulation (D) comprising the aqueous formulation (A) or the formulation (C) of the invention and additionally at least 2% by weight of an organic solvent. Furthermore, the present invention relates to dry formulations (E) which are obtained by removing water and solvent from the water-comprising formulations (D) of the invention. The present invention further provides for the use of the water-comprising formulations (D) of the invention and of the dry formulations (E) obtained from these for producing a polymer electrolyte membrane and also the polymer electrolyte membrane itself and a membrane-electrode assembly (MEA) and also a fuel cell comprising the polymer electrolyte membrane of the invention. | 09-04-2008 |
20080255326 | Process For Preparing Graft Polymers - Processes for preparing graft polymers and their use for inhibiting gas hydrates | 10-16-2008 |
20090036550 | Copolymers Based on Polyalkylene Oxide-Modified N-Vinyl Lactam Copolymers - Vinyllactam copolymers modified with polyalkylene oxide side-chains, and use thereof as solubilizers for substances which are sparingly soluble in water, and preparations comprising such copolymers. | 02-05-2009 |
20100291462 | METHOD FOR PRODUCING MEMBRANES COATED WITH A CATALYST ON BOTH SIDES - The invention relates to a process for producing catalyst coated membranes for electrochemical devices, which comprises the steps
| 11-18-2010 |
20100316929 | AQUEOUS FORMULATIONS COMPRISING POLYAROMATIC COMPOUNDS BEARING ACID GROUPS AND/OR SALTS OF ACID GROUPS, PROCESS FOR PRODUCING THEM, FURTHER FORMULATIONS PRODUCED USING THE AQUEOUS FORMULATIONS AND USE OF THE FURTHER FORMULATIONS IN FUEL CELLS - Process for producing aqueous formulations (A) comprising at least one polyaromatic compound bearing acid groups and/or salts of acid groups and also aqueous formulations (A) which have been produced according to the process of the invention. Also a process for producing dried formulations (B) by removing the water from the aqueous formulations (A) and also the dried formulations (B) themselves. In addition a formulation (C) comprising the dried formulation (B) of the invention and also water or an aqueous formulation (A) and a water-comprising formulation (D) comprising the aqueous formulation (A) of the invention or the formulation (C) of the invention and additionally at least 2% by weight of an organic solvent. Additionally dry formulations (E) which are obtained by removing water from the water-comprising formulations (D) of the invention. Also the use of the water-comprising formulations (D) of the invention and of the dry formulations (E) obtained from these for producing a polymer electrolyte membrane and also the polymer electrolyte membrane itself and a membrane-electrode assembly (MEA) and also a fuel cell comprising the polymer electrolyte membrane of the invention. | 12-16-2010 |
20110201747 | BRANCHED POLYARYLENE ETHERS AND THERMOPLASTIC MOLDING COMPOUNDS CONTAINING SAID ETHERS - The present invention relates to branched polyarylene ethers (A) comprising branching sites of the formula (I): | 08-18-2011 |