PRODUCTION OF WATER-ABSORPTIVE POLYMER

PURPOSE:To obtain the title polymer to be used for sanitary articles, sludge solidification, etc. by putting an aqueous solution of alpha, beta - unsaturated carboxylic acid ( salt ) monomer to polymerization in the presence of a polyfunctional monomer while preventing the aqueous medium from boilin...

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Bibliographische Detailangaben
Hauptverfasser:	KOYAMA SHOZO, SAKAKIBARA HIDENORI, OKADA MINORU, MORI YOSHIKAZU
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain the title polymer to be used for sanitary articles, sludge solidification, etc. by putting an aqueous solution of alpha, beta - unsaturated carboxylic acid ( salt ) monomer to polymerization in the presence of a polyfunctional monomer while preventing the aqueous medium from boiling through pressurization to enable high-concentration aqueous solution reaction. CONSTITUTION:An aqueous solution of monomer predominant in alpha, beta - unsaturated carboxylic acid ( salt ) ( pref. containing >= 20 wt.% of acrylic acid plus its alkali metal salt ) is put to polymerization in the presence of a polyfunctional monomer ( pref. ethylene glycol diacrylate ) while preventing the aqueous medium from boiling through pressurization ( pref. >= 2 kg/cm G ), thus obtaining the objective polymer.