WATER ABSORBING RESIN AND MANUFACTURING METHOD THEREFORE

PROBLEM TO BE SOLVED: To provide water absorbing resin having a small water soluble quantity, and a method for manufacturing the water absorbing resin with good productivity. SOLUTION: In the method of manufacturing the water absorbing resin, an aqueous solution D containing at least one kind of mon...

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Hauptverfasser:	HITOMI KAZUNAO, SHIMOMURA TADAO, HATSUDA TAKUMI
Format:	Patent
Sprache:	eng
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CHEMISTRY COMPOSITIONS BASED THEREON DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS DISINFECTION, STERILISATION, OR DEODORISATION OF AIR FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE 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 THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide water absorbing resin having a small water soluble quantity, and a method for manufacturing the water absorbing resin with good productivity. SOLUTION: In the method of manufacturing the water absorbing resin, an aqueous solution D containing at least one kind of monomer component A selected from a group comprising unsaturated carboxylic acid and its salt, a compound B having at least two unsaturated groups in one molecule, and a compound C having at least two functional groups that can react with a carboxyl group, in one molecule, is polymerized to simultaneously satisfy the following conditions (1)-(3): (1) the mol ratio of B/C is within a range of 2×10-3-300, (2) polymerization is initiated with a redox polymerization initiator, and (3) the maximum reaction temperature is within a range of 60-100°C. COPYRIGHT: (C)2005,JPO&NCIPI