POLYCARBOXYLIC ACID COPOLYMER, ITS MANUFACTURING METHOD, AND ITS USE

• Main Authors: SAKAMOTO NOBORU, TANAKA HIROMICHI, UEDA TOMIYASU, IZUKASHI HIROKO, NISHIKAWA TOMOTAKA, HIRATA TAKESHI, YUASA TSUTOMU, ONDA YOSHIYUKI, UNO TORU
• Format: Patent
• Language: English
• Published: 25.10.2007
• Subjects: ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; LIME, MAGNESIA; MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; REFRACTORIES; SLAG; THEIR PREPARATION OR CHEMICAL WORKING-UP; TREATMENT OF NATURAL STONE

PROBLEM TO BE SOLVED: To provide a polycarboxylic acid copolymer making water-reducing property and operability of a cement composition etc. excellent, and, when fluidity and water-reducing property are the same, making its handling easier, its manufacturing method, and a cement additive and a cement composition containing it, and further a polycarboxylic acid copolymer and a cement additive capable of using favorably in an ultrahigh strength concrete for its ability to improve the strength and durability of its cured products, and a manufacturing method of the polycarboxylic acid copolymer having high water-reducing performance and capable of improving operability in cemnent construction by reducing the viscosity of the cement composition etc. SOLUTION: This polycarboxylic acid copolymer is formed by copolymerization of a polyalkylene glycol unsaturated monomer (A2) having an oxyalkylene group bonded to a polyhydric alcohol residue, and a monomer component containing an unsaturated monocarboxylic acid monomer (B'). COPYRIGHT: (C)2008,JPO&INPIT