Continuous process for preparing superabsorbent polymers from PAN-emulsions

Die vorliegende Erfindung betrifft ein Verfahren zur kontinuierlichen Herstellung von superabsorbierenden Polymerisaten auf Basis von feinteiligen unvernetzten und vernetzten wässrigen Polyacrylnitril-Emulsionen. Super absorbent polymers (I) are prepared by hydrolysis of an optionally cross-linked f...

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Hauptverfasser:	SACKMANN, GUENTER, NAKONETSCHNY, JGOR, BAYBURDOV, TELMAN, MEYER, ROLF-VOLKER, SCHAPOWALOW, SERGEJ
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G BANDAGES, DRESSINGS OR ABSORBENT PADS BASIC ELECTRIC ELEMENTS CABLES CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CHEMISTRY COMPOSITIONS BASED THEREON CONDUCTORS DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS DISINFECTION, STERILISATION, OR DEODORISATION OF AIR ELECTRICITY FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION GENERAL PROCESSES OF COMPOUNDING HUMAN NECESSITIES HYGIENE INSULATORS 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 ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OR PROTECTION OF EYES OR EARS WORKING-UP
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Zusammenfassung:	Die vorliegende Erfindung betrifft ein Verfahren zur kontinuierlichen Herstellung von superabsorbierenden Polymerisaten auf Basis von feinteiligen unvernetzten und vernetzten wässrigen Polyacrylnitril-Emulsionen. Super absorbent polymers (I) are prepared by hydrolysis of an optionally cross-linked fine particulate aqueous polyacrylonitrile emulsion in a continuous stirred vessel cascade by reaction with alkali hydroxide solution in an aqueous-alcohol medium at 60-100 degrees C. An Independent claim is included for hygienic products, water absorbing materials or electric cable sheathing prepared using the polymers (I).