Präformierte Superabsorber mit hohem Quellvermögen

Novel pre-formed spherical particles (I) of super-absorbent polymer are prepared by alkaline hydrolysis of an aqueous emulsion containing crosslinked and/or non-crosslinked acrylonitrile homo- and/or copolymers in a mixture of alcohol and water. The preparation of (I) is also claimed, by partial alk...

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Bibliographische Detailangaben
Hauptverfasser:	KORTE, SIEGFRIED. DR., 51519 ODENTHAL, DE, SACKMANN, GUENTER. DR., 51379 LEVERKUSEN, DE, MEYER, ROLF-VOLKER. DR., 51373 LEVERKUSEN, DE, SCHAPOWALOW, SERGEJ. DR., 51061 KOELN, DE
Format:	Patent
Sprache:	ger
Schlagworte:	ADHESIVES BLASTING CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON DISINFECTION, STERILISATION, OR DEODORISATION OF AIR DYES ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HUMAN NECESSITIES HYGIENE LIGHTING MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING MEDICAL OR VETERINARY SCIENCE METALLURGY METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLISHES SHOCK-ABSORBERS SPRINGS THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS THERMAL INSULATION IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	Novel pre-formed spherical particles (I) of super-absorbent polymer are prepared by alkaline hydrolysis of an aqueous emulsion containing crosslinked and/or non-crosslinked acrylonitrile homo- and/or copolymers in a mixture of alcohol and water. The preparation of (I) is also claimed, by partial alkali hydrolysis of the emulsions in a mixture of alcohol and water, followed by separating the powder precipitated during the reaction, drying and optionally heating for a short period of time.