WATER-SWELLABLE HYBRID MATERIAL WITH INORGANIC ADDITIVES AND PROCESS FOR ITS PREPARATION

• Main Authors: KUNSTMANN, JUERGEN, ZINDEL, OLIVER, PEPPMOELLER, REINMAR, BENTLAGE, WULF
• Format: Patent
• Language: English
• Published: 06.02.2009
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; FERTILISERS; FERTILISERS PRODUCING CARBON DIOXIDE; INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MANUFACTURE THEREOF; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

Water swellable hybrid material comprises a structurally crosslinked polymer matrix and bound inorganic particulate solid. The hybrid material has a time-dependent swelling behavior corresponding to an uptake of water of at least 7.5 times related to weight of the hybrid material within one hour. Independent claims are included for: (1) preparing water swellable hybrid material which comprises providing a reaction mixture comprising at least a polymerizable component and at least one solvent, where the pH of the reaction mixture is less than 7, mixing the reaction mixture with inorganic solid particulate, adding at least a crosslinker, initiating polymerization and controlling the polymerization reaction, so that the volume of the reaction mixture increases; (2) the hybrid material obtained by the process, and (3) a soil auxiliary material comprising the hybrid material and at least a material such as ground, humus, sand and/or turf.