WATER-ABSORBING RESIN COMPOSITION

PURPOSE:To obtain a water absorbing resin composition suitable as water- absorbing and swelling material for a water exposure sensor of joints of optical fiber cable by blending a rubber-like substance with highly water absorbing resin, sodium polyacrylate having specific molecular weight and blowin...

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Bibliographische Detailangaben
Hauptverfasser:	URANO KATSUYOSHI, UMEDA MASANARI, SAKURABA YUKIO
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES MEASURING METALLURGY OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS PHYSICS TESTING THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain a water absorbing resin composition suitable as water- absorbing and swelling material for a water exposure sensor of joints of optical fiber cable by blending a rubber-like substance with highly water absorbing resin, sodium polyacrylate having specific molecular weight and blowing agent. CONSTITUTION:(A) A rubber-like substance (preferably EPDM) adjusted to proper viscosity with a plasticizer so as to be adapted to foaming is blended with (B) preferably 50-500 pts.wt. based on 100 pts. wt. component A of a highly water absorbing resin (preferably crosslinked sodium polyacrylate) having preferably 5-200 micron particle diameter, (C) 1-50 pts. wt., preferably 10-50 pts.wt. based on 100 pts. wt. component B of a sodium polyacrylate having