Superabsorbent polymers with core-shell structure and process for preparing same

A super-absorbent partially crosslinked polymer has saline absorption of 50g/g, and a solid layer of the polymer has saline absorption of 20g/g and porosity of at least 500 g. Also claimed is a process for the preparation of the product using the polymer. On améliore considérablement les propriétés...

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Bibliographische Detailangaben
Hauptverfasser:	COLLETTE, CHRISTIAN M, PUCHOIS, EMMANUEL M, HILDAGO, MANUEL M, KOWALIK, ANDRE M
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING WORKING-UP
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Beschreibung
Zusammenfassung:	A super-absorbent partially crosslinked polymer has saline absorption of 50g/g, and a solid layer of the polymer has saline absorption of 20g/g and porosity of at least 500 g. Also claimed is a process for the preparation of the product using the polymer. On améliore considérablement les propriétés d'utilisation de poudres de polymères superabsorbants associées à une augmentation du module mécanique des particules qui les constituent, en particulier l'absorption sous charge d'un lit épais de telles particules, et la porosité du lit de gel qu'elles forment par absorption d'eau ou de solutions salines, et les soumettant à une post-réticulation sous contrôle précis de leur teneur en eau.