| Patent application number | Description | Published |
|---|
| 20090165933 | METHOD FOR PRODUCING A MEMBRANE ELECTRODE UNIT FOR A FUEL CELL - A process for producing a membrane-electrode assembly for a fuel cell. The process (a) produces at least one multilayer field on a support, with the at least one multilayer field including at least one electrode layer and at least one membrane layer and the at least one multilayer field being applied to the support such that the at least one multilayer field is surrounded by channels on the support that are bounded on at least one side by edges of the at least one multilayer field, and (b) introduces a flowable, curable sealing material into the channels, which sealing material becomes distributed there to produce a seal surrounding the edges of the at least one multilayer field. | 07-02-2009 |
| 20090192035 | Method for Producing Water-Absorbent Polymer Particles with a Higher Permeability by Polymerising Droplets of a Monomer Solution - A process for preparing water-absorbing polymer beads with high permeability by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets, wherein a water-insoluble inorganic salt is suspended in the monomer solution and the polymer beads have a mean diameter of at least 150 μm. | 07-30-2009 |
| 20090192036 | Method for the Production of Water Absorbent Polymer Particles by Polymerizing Drops of a Monomer Solution - The invention relates to a method for the production of water absorbent polymer particles by polymerizing drops, comprising at least one monomer in a gas phase surrounding the drops, wherein the drops are produced by surrounding a first monomer solution with a second monomer solution and polymerizing the second monomer solution to a higher cross-linked polymer than the first monomer solution. | 07-30-2009 |
| 20090258994 | Method for Producing Post-Cured Water-Absorbent Polymer Particles with a Higher Absorption by Polymerising Droplets of a Monomer Solution - A process for preparing postcrosslinked water-absorbing polymer beads with high absorption by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets, wherein the solids content of the monomer solution is at least 35% by weight and the polymer beads have a mean diameter of at least 150 μm. | 10-15-2009 |
| 20090315204 | Method for Producing Polymer Particles by the Polymerization of Fluid Drops in a Gas Phase - A process for producing polymer particles by polymerizing liquid droplets in a gas phase by metering a liquid comprising at least one monomer from at least one feed by means of a multitude of bores into a reaction chamber comprising the gas phase, wherein ratio of length of the feed to greatest diameter of the feed in the region of the multitude of bores is at least 10. | 12-24-2009 |
| 20100010176 | Method for the Production of Water Absorbent Polymer Particles by Polymerizing Drops of a Monomer Solution - A process for preparing water-absorbing polymer beads by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets, the initiator being added to the monomer solution from 0.5 to 60 seconds before the droplets are generated. | 01-14-2010 |
| 20100016505 | Method for Producing Polymer Particles by the Polymerization of Liquid Droplets in a Gas Phase - A process for producing polymer particles by polymerizing liquid droplets in a gas phase surrounding the droplets, said droplets comprising at least one monomer and being coated with particulate solids during the polymerization. | 01-21-2010 |
| 20100029866 | Regulation of a Process for Producing Water-Absorbing Polymer Particles in a Heated Gas Phase - In a process for producing water-absorbing polymeric particles which comprises generating droplets comprising monomers, polymerizing the monomers in a heated gas phase surrounding the droplets and flowing the gas through the polymerization reactor, the temperature of the gas leaving the polymerization reactor is closed-loop controlled. | 02-04-2010 |
| 20100035059 | Method for Producing Water-Absorbent Polymer Particles by the Polymerization of Droplets of a Monomer Solution - A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a surrounding gas phase, the resulting polymer particles having a water content of at least 5% by weight, and being aftertreated thermally in the fluidized state in the presence of steam at a temperature of at least 60° C. | 02-11-2010 |
| 20100062932 | Method for Producing Water-Absorbent Polymer Particles by the Polymerization of Droplets of a Monomer Solution - A process for producing water-absorbing polymer particles by polymerizing droplets of a monomer solution in a surrounding gas phase, said monomer solution comprising at least one azo compound and at least one persulfate, the resulting polymer particles having a water content of at least 5% by weight, and being aftertreated thermally at a temperature of at least 100° C. for at least 5 minutes. | 03-11-2010 |
| 20110294968 | METHOD FOR PRODUCING POLYMERS AND REACTOR FOR CARRYING OUT SAID METHOD - The invention relates to a process for preparing polymers from monomers and/or oligomers by adding a liquid comprising the monomers and/or oligomers dropwise to a continuous liquid phase in a reactor, the continuous liquid phase being immiscible with the liquid comprising the monomers and/or oligomers, and the monomers and/or oligomers reacting in the continuous liquid phase to give the polymer. The liquid comprising the monomers and/or oligomers is shaped to droplets outside the continuous liquid phase, which are subsequently introduced into the continuous liquid phase. The invention further relates to a reactor for performing the process, comprising a tube through which a continuous liquid phase flows, and means of generating droplets, the means of generating droplets being arranged such that the droplets are generated outside the continuous liquid phase and then introduced into the continuous liquid phase. | 12-01-2011 |
| 20120141792 | Method for Producing Post-Cured Water-Absorbent Polymer Particles with a Higher Absorption by Polymerizing Droplets of a Monomer Solution - A process for preparing postcrosslinked water-absorbing polymer beads with high absorption by polymerizing droplets of a monomer solution in a gas phase surrounding the droplets, wherein the solids content of the monomer solution is at least 35% by weight and the polymer beads have a mean diameter of at least 150 μm. | 06-07-2012 |
| 20120264111 | HYDROPHOBIC, FUNCTIONALIZED PARTICLES - The present invention relates to a stable mixture comprising surface-modified particles which are obtained by reacting metal oxide or semimetal oxide particles with at least one compound selected from among silicon-comprising compounds bearing at least one metaloxy radical and optionally further alkoxy and/or hydroxy radical(s) and at least one solvent, at least one surface-active substance or a mixture thereof, a process for producing the mixture, the use of these particles in systems in which they are brought into contact with at least one solvent, where the mass ratio of solvent to modified particle is greater than 500, and also the use of these particles in agglomeration-deagglomeration cycles. | 10-18-2012 |
