| Patent application number | Description | Published |
|---|
| 20080242817 | Dropping Method for Liquids - In a process for dropletizing a liquid by means of a dropletizer plate at least the underside of the dropletizer plate has at least in part a contact angle of at least 60° with regard to the liquid to be dropletized. | 10-02-2008 |
| 20080319150 | Process for Production of Polymer Powders Containing Vinylformamide Units - A process for producing a polymer powder comprising vinylformamide units by free radical polymerization of an aqueous solution of N-vinylformamide and if appropriate other monomers and drying the polymer which comprises an aqueous monomer solution comprising N-vinylformamide and at least one polymerization initiator being spray dispensed as an aerosol or dropletized at the top of a heatable tower-shaped reactor, then polymerizing the aerosol or droplets in an inert gas atmosphere to form a finely divided solid and discharging the finely divided polymer from the reactor. | 12-25-2008 |
| 20090131549 | PROCESS FOR PREPARING POLYVINYLPYRROLIDONES BY SPRAY POLYMERIZATION - A process for preparing polyvinylpyrrolidones by free-radically initiated polymerization in the presence of an initiator found, which comprises performing the polymerization as a spray or droplet polymerization. | 05-21-2009 |
| 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 |
