PREPARING FAST SUPERABSORBENTS WITH ENHANCED ELASTIC BEHAVIOR

• Main Authors: MESCHER, Axel, GARTZ, Dominik, SMITH, Scott, PFAHLER, Axel, SCHMIDT, Diedrich, LOICK, Christoph, DIRKS, Martin
• Format: Patent
• Language: English; French; German
• Published: 28.08.2024
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR; GENERAL PROCESSES OF COMPOUNDING; HUMAN NECESSITIES; HYGIENE; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES; MEDICAL OR VETERINARY SCIENCE; METALLURGY; METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

Present invention deals with a method for preparing water-absorbing polymers, so called superabsorbents. The invention is based on the finding that extruding hydrogel through a hole plate (13) obeying a complex design rule diminishes negative influence of thixotropy and increases the absorption speed of the superabsorbent made from the hydrogel.