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POWDER DISPERSANT COMPOSITION FOR HYDRAULIC COMPOSITIONS
Provided is a powder dispersant composition for hydraulic compositions containing particles (A) and (B). An aqueous solution or aqueous suspension of the powder dispersant composition at a concentration of 5 mass % has a surface tension of 20.0 mN/m to 50.0 mN/m at 25° C. Particle (A) contains components (A1) and (A2) and has a D50 of 90 μm to 600 μm, wherein a proportion of particles of 70 μm or less is 15 volume % or less. Component (A1) is a copolymer of constituent units (1) and (2), wherein all the raw material monomers of the copolymer have a melting point of −80° C. to 80° C. Component (A2) is a nonionic surfactant, whose aqueous solution or aqueous suspension at a concentration of 5 mass % has a surface tension of 20.0 mN/m to 50.0 mN/m at 25° C. Particle (B) is formed of an inorganic compound and has a D50 of 1 μm to 50 μm.
POWDER DISPERSANT COMPOSITION FOR HYDRAULIC COMPOSITIONS
Provided is a powder dispersant composition for hydraulic compositions containing particles (A) and (B). An aqueous solution or aqueous suspension of the powder dispersant composition at a concentration of 5 mass % has a surface tension of 20.0 mN/m to 50.0 mN/m at 25° C. Particle (A) contains components (A1) and (A2) and has a D50 of 90 μm to 600 μm, wherein a proportion of particles of 70 μm or less is 15 volume % or less. Component (A1) is a copolymer of constituent units (1) and (2), wherein all the raw material monomers of the copolymer have a melting point of −80° C. to 80° C. Component (A2) is a nonionic surfactant, whose aqueous solution or aqueous suspension at a concentration of 5 mass % has a surface tension of 20.0 mN/m to 50.0 mN/m at 25° C. Particle (B) is formed of an inorganic compound and has a D50 of 1 μm to 50 μm.
POWDER DISPERSANT COMPOSITION FOR HYDRAULIC COMPOSITIONS
SHIMADA KOHEI (author) / SAGAWA KEIICHIROU (author)
2024-12-26
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
METHOD FOR PRODUCING POWDER DISPERSANT COMPOSITION FOR HYDRAULIC COMPOSITIONS
| European Patent Office | 2023