| Patent application number | Description | Published |
|---|
| 20080306312 | Process for Obtaining Alkoxides - Alkoxides are isolated by crystallization of an alcohol from a solution in the corresponding alcohol, with the alkoxide being crystallized out at a pressure of at least 3 bar abs. and a temperature of at least 120° C. | 12-11-2008 |
| 20090022603 | Method for the Pneumatic Conveying of Water-Absorbent Polymer Particles - A process for pneumatic delivery of water-absorbing polymer particles, the compressor used for pneumatic delivery having a steep characteristic and the initial gas rate in the delivery corresponding to a Froude number of from 10 to 18. | 01-22-2009 |
| 20090060660 | Process for Pneumatic Conveying of Water-Absorbing Polymer Particles - A process for pneumatic delivery of water-absorbing polymer particles, the initial gas rate in the delivery being from 1 to 6 m/s and the delivery material loading being from 1 to 100 kg/kg. | 03-05-2009 |
| 20090060661 | Method for the Pneumatic Conveying of Water-Absorbent Polymer Particles - A process for pneumatic delivery of water-absorbing polymer particles using curved pipelines, the ratio of radius of curvature to tube diameter being at least 5. | 03-05-2009 |
| 20090275691 | METHOD FOR THE PRODUCTION OF CO-EXTRUDATES COMPOSED OF POLYSTYRENE AND OF A CROSSLINKED POLYVINYLPYRROLIDONE WITH REDUCED RESIDUAL STYRENE MONOMER CONTENT - A method for removing residual styrene monomers from co-extrudates comprising polystyrene and water-insoluble, crosslinked polyvinylpyrrolidone, which comprises subjecting an aqueous suspension of the particulate solid co-extrudate to a heat treatment at temperatures of 60 to 99° C., the weight ratio of solid co-extrudate to water in the suspension being 1:1.5 to 1:20, and the concentration of the suspension being kept constant during the treatment. | 11-05-2009 |
| 20090291164 | METHOD FOR REGENERATING AN AUXILIARY FILTERING AGENT - Processes comprising: (i) providing a filter aid comprising a co-extrudate of a water-insoluble polyvinylpyrrolidone and a thermoplastic polymer; (ii) treating the filter aid with aqueous alkali; (iii) subsequently treating the filter aid with an enzyme; and (iv) subsequently thereto carrying out a second treatment with aqueous alkali, to provide a regenerated filter aid, and uses therefor. | 11-26-2009 |
| 20100093949 | Superabsorbents Having Superior Permeability and Conveying Properties - A superabsorbent having superior permeability and conveying properties comprises a permeability enhancing agent and a cohesion control agent and has a free swell gel bed permeability of at least 15 Darcies and a Hausner ratio in the range of 1.18 to 1.34. | 04-15-2010 |
| 20100176069 | METHOD FOR REGENERATING A FILTER AID - Methods for regenerating filter aids which comprise inorganic, natural or semisynthetic filter aids. The method comprises subjecting the filter aid to a first treatment with an aqueous alkaline solution, treating the filter aid with enzymes, treating the filter aid with a surfactant, and subjecting the filter aid a second treatment with the aqueous alkaline solution. The enzyme treatment and the surfactant treatment steps may be carried out simultaneously or in any order. | 07-15-2010 |
| 20100206897 | Process for Metering Superabsorbents - Superabsorbents are metered by a process using a screw conveyor, wherein the superabsorbent is selected, or treated with a cohesion control agent, to have an unconfined yield strength of from 0.75 to 1.5 kPa at consolidation stress of 6 kPa. | 08-19-2010 |
