POLYMER, PROCESS FOR PREPARING THE SAME AND CEMENT ADMIXTURE FOR USING THE SAME

Disclosed is a polymer which has a quite narrow molecular weight distribution that is different from that of a conventional copolymer in spite of the fact that the polymer has a polyalkylene glycol chain, and also has a specific parameter. Also disclosed is a dispersant for an inorganic powder, part...

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Bibliographische Detailangaben
Hauptverfasser:	OSAMURA HIROSHI, SAKAMOTO NOBORU, MATSUDA YUKO, NISHIKAWA TOMOTAKA, YUASA TSUTOMU
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS REFRACTORIES SLAG THEIR PREPARATION OR CHEMICAL WORKING-UP TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	Disclosed is a polymer which has a quite narrow molecular weight distribution that is different from that of a conventional copolymer in spite of the fact that the polymer has a polyalkylene glycol chain, and also has a specific parameter. Also disclosed is a dispersant for an inorganic powder, particularly a cement admixture, which is prepared using the polymer and has an excellent dispersing property. The polymer is a polymer (P) having a constituent unit derived from a polyoxyalkylene chain and has a PD value as defined below: 1 < PD < MD (Formula 1) wherein PD = Mw/Mn, MD = G(n) x Mw + H (n)