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Soeda Koichi, Hayashi Hiroshi, Matsuhisa Makoto, Sato Kazuhiro, Ashiyahara Satoru, Tsuchiya Kazuyoshi, Hosono Katsuo, Kinoshita Mitsuo, Miura Yoshimasa: Self-leveling water-base composition. Chichibu Onoda Cement, Takemoto Oil & Fat, August 7, 1996: EP0725044-A1 (50 worldwide citation)

The present invention relates to a self-leveling aqueous composition comprising 100 parts by weight of a base material which is a mixture of cement and natural type-II anhydrous gypsum which are mixed in a weight ratio from 40/60 to 80/20, 0.1 to 3 parts by weight of an acrylic dispersant or a dispe ...


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Hosokawa Yoshifumi, Matsuura Shigeru, Kobayashi Kumiko, Soeda Koichi: Liquid accelerator for cement. Taiheiyo Cement, July 4, 2000: JP2000-185952 (4 worldwide citation)

PROBLEM TO BE SOLVED: To improve the quick setting property of a liquid accelerator for cement by specifying the molar ratio of Al2O3 component to SO3 component in an aqueous suspension mainly comprising Al2O3 and SO3 components. SOLUTION: This liquid accelerator for cement is an aqueous suspension ...


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Kinoshita Mitsuo, Iida Masahiro, Okada Kazuhisa, Soeda Koichi, Hayashi Hiroshi, Tsukada Kazuhisa, Isomura Hirotaka: Dispersant for powdery cement. Takemoto Oil &Amp Fat, Taiheiyo Cement, November 28, 2000: JP2000-327384 (3 worldwide citation)

PROBLEM TO BE SOLVED: To obtain a dispersant not causing change in quality in itself, capable of imparting high fluidity and suppressing deterioration with the lapse of time and capable of imparting early strength in the hardening initial stage by drying an aqueous mixture of (A) a water-soluble vin ...


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Soeda Koichi, Hosono Katsuo, Hayashi Hiroshi, Yamada Kazuo, Matsuhisa Makoto, Ashiyahara Satoru, Maeda Hirokazu, Furuta Hitoshi, Hattori Mitsuo: Cement composition. Fuji Oil, January 15, 1997: EP0753489-A1 (2 worldwide citation)

A cement composition comprising a cement base and hemicellulose. The cement composition produces reduced efforescence and less bleeding. Self-leveling materials containing the cement composition also produce reduced efforescence and less bleeding and exhibit improved surface adhesion strength.


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Tsukada Kazuhisa, Hayashi Hiroshi, Isomura Hirotaka, Soeda Koichi, Ishimori Masaki, Matsuhisa Masato, Kaneda Yoshihisa: Powdery cement dispersant and its production. Taiheiyo Cement, January 25, 2000: JP2000-026145 (2 worldwide citation)

PROBLEM TO BE SOLVED: To obtain a powdery cement dispersant excellent in handlability and capable of producing a cement compsn. excellent in flowability by concentrating a mixture contg. a (meth)acrylate type cement dispersant having specified constituent units and water, kneading and mixing the con ...


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Tsukada Kazuhisa, Hayashi Hiroshi, Isomura Hirotaka, Soeda Koichi, Makino Kenjiro: Powdery cement dispersant and cement composition using same. Taiheiyo Cement, January 25, 2000: JP2000-026146 (2 worldwide citation)

PROBLEM TO BE SOLVED: To obtain a powdery cement dispersant with high concn. easy to handle by adding a polyalkylene glycol or a fatty acid having a specified number of C atoms to an aq. soln. of a polycarboxylic acid type high molecular compd. having a polyalkylene glycol chain and converting the a ...


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Hayashi Hiroshi, Tsukada Kazuhisa, Isomura Hirotaka, Soeda Koichi: Cement-based grout composition. Taiheiyo Cement, February 2, 2000: JP2000-034156 (1 worldwide citation)

PROBLEM TO BE SOLVED: To obtain a cement-based grout composition having a high packing density-holding effect by compounding a binder, an aggregate, an expanding material, a thickener, and a cement dispersing agent comprising a polycarboxylic acid-based high molecular compound or one or more kinds o ...


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Hayashi Hiroshi, Tsukada Kazuhisa, Isomura Hirotaka, Soeda Koichi: Ultra-rapid-hardening cement composition. Taiheiyo Cement, February 2, 2000: JP2000-034159 (1 worldwide citation)

PROBLEM TO BE SOLVED: To obtain an ultra-rapid-hardening cement composition having a high flowability-retaining effect and an excellent rapid hardening property by compounding a ultra-rapid hardening cement and a cement-dispersing agent comprising a polycarboxylic acid-based high molecular compound ...


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Kaneda Yoshihisa, Soeda Koichi, Nakamura Yasushi, Ashida Shigeru, Tsumura Kazunobu, Kugimiya Wataru: Air-entraining agent for cement position and curing of cement composition containing the air-entraining agent. Taiheiyo Cement, Fuji Oil, August 15, 2000: JP2000-226245 (1 worldwide citation)

PROBLEM TO BE SOLVED: To obtain a cement composition exhibiting an excellent air-entraining function even when compound with fly ash, by adding the enzymatic hydrolysate of soybean protein as an active ingredient. SOLUTION: The cement composition is used in a state of a cement paste, mortar, concret ...