MICROPOROUS SUPERABSORBENT MATERIAL WITH ENHANCED SURFACE AREA

A superabsorbent material generally free of organic solvents and having a high overall porosity and a high percentage of micropores are provided. The superabsorbent material is formed from a high-molecular weight linear water-soluble absorbent polymer and a non-reactive or latent crosslinking agent,...

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Bibliographische Detailangaben
Hauptverfasser:	QIN, Jian, NG, Wing-Chak, WIDEMAN, Gregory J, CHEN, Feng, MLEZIVA, Mark M, BIGGS, David G
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR RELEVANT APPARATUS TRANSPORTING TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:	A superabsorbent material generally free of organic solvents and having a high overall porosity and a high percentage of micropores are provided. The superabsorbent material is formed from a high-molecular weight linear water-soluble absorbent polymer and a non-reactive or latent crosslinking agent, and contains a plurality of micropores having a size of about 150 µm or less. The superabsorbent material is formed into a variety of shapes having a high external surface to volume ratio. L'invention concerne un matériau superabsorbant globalement exempt de solvants organiques et ayant une porosité globale élevée et un pourcentage élevé de micropores. Le matériau superabsorbant est formé à partir d'un polymère absorbant hydrosoluble linéaire de haut poids moléculaire et d'un agent de réticulation non réactif ou latent, et contient une pluralité de micropores ayant une taille d'environ 150 µm au maximum. Le matériau superabsorbant est formé selon diverses formes ayant un rapport surface externe-volume élevé.