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A platform for research: civil engineering, architecture and urbanism
POWDER DISPERSION COMPOSITION FOR HYDRAULIC COMPOSITION
To provide a powder dispersion composition for hydraulic composition capable of adding high flowability to a hydraulic composition and superior in heat stability such as being less likely to be solidified even under a high temperature environment.SOLUTION: A powder dispersion composition for hydraulic composition is a composition which includes a particle (A) and a particle (B), the composition having surface tension of 20.0 mN/m or larger and 50.0 mN/m or lower in an aqueous solution or a water suspension liquid of 5 mass% concentration at 25°C. The particle (A) is particles which include a component (A1) and a component (A2) and in which a ratio of particles having a median diameter of 90 μm or more and 600 μm or less and a particle diameter of 70 μm or less is 15 vol.% or less. The component (A1) is copolymer, including a specified constituent unit, in which melting points of all the monomers of the raw material are -80°C or higher and 80°C or lower. The component (A2) is a nonionic surface-active agent having surface tension of 20.0 mN/m or larger and 50.0 mN/m or lower in an aqueous solution or a water suspension liquid of 5 mass% concentration at 25°C. The particle (B) is an organic compound particle having median diameter of 1 μm or more and 50 μm or less.SELECTED DRAWING: None
【課題】水硬性組成物に優れた流動性を付与でき、高温環境下でも固結しにくいなど熱安定性に優れた水硬性組成物用粉末分散剤組成物を提供する。【解決手段】粒子（Ａ）及び粒子（Ｂ）を含有する組成物であって、組成物は５質量％濃度の水溶液又は水懸濁液の２５℃での表面張力が２０．０ｍＮ／ｍ以上５０．０ｍＮ／ｍ以下である、水硬性組成物用粉末分散剤組成物。＜粒子（Ａ）＞（Ａ１）成分と（Ａ２）成分とを含む粒子であって、メジアン径が９０μｍ以上６００μｍ以下、粒径７０μｍ以下の粒子の割合が１５体積％以下である粒子［（Ａ１）成分］原料の全ての単量体の融点が－８０℃以上８０℃以下である、特定の構成単位を含む共重合体［（Ａ２）成分］５質量％濃度の水溶液又は水懸濁液の２５℃での表面張力が２０．０ｍＮ／ｍ以上５０．０ｍＮ／ｍ以下であるノニオン性界面活性剤＜粒子（Ｂ）＞メジアン径が１μｍ以上５０μｍ以下である無機化合物粒子【選択図】なし
POWDER DISPERSION COMPOSITION FOR HYDRAULIC COMPOSITION
To provide a powder dispersion composition for hydraulic composition capable of adding high flowability to a hydraulic composition and superior in heat stability such as being less likely to be solidified even under a high temperature environment.SOLUTION: A powder dispersion composition for hydraulic composition is a composition which includes a particle (A) and a particle (B), the composition having surface tension of 20.0 mN/m or larger and 50.0 mN/m or lower in an aqueous solution or a water suspension liquid of 5 mass% concentration at 25°C. The particle (A) is particles which include a component (A1) and a component (A2) and in which a ratio of particles having a median diameter of 90 μm or more and 600 μm or less and a particle diameter of 70 μm or less is 15 vol.% or less. The component (A1) is copolymer, including a specified constituent unit, in which melting points of all the monomers of the raw material are -80°C or higher and 80°C or lower. The component (A2) is a nonionic surface-active agent having surface tension of 20.0 mN/m or larger and 50.0 mN/m or lower in an aqueous solution or a water suspension liquid of 5 mass% concentration at 25°C. The particle (B) is an organic compound particle having median diameter of 1 μm or more and 50 μm or less.SELECTED DRAWING: None
【課題】水硬性組成物に優れた流動性を付与でき、高温環境下でも固結しにくいなど熱安定性に優れた水硬性組成物用粉末分散剤組成物を提供する。【解決手段】粒子（Ａ）及び粒子（Ｂ）を含有する組成物であって、組成物は５質量％濃度の水溶液又は水懸濁液の２５℃での表面張力が２０．０ｍＮ／ｍ以上５０．０ｍＮ／ｍ以下である、水硬性組成物用粉末分散剤組成物。＜粒子（Ａ）＞（Ａ１）成分と（Ａ２）成分とを含む粒子であって、メジアン径が９０μｍ以上６００μｍ以下、粒径７０μｍ以下の粒子の割合が１５体積％以下である粒子［（Ａ１）成分］原料の全ての単量体の融点が－８０℃以上８０℃以下である、特定の構成単位を含む共重合体［（Ａ２）成分］５質量％濃度の水溶液又は水懸濁液の２５℃での表面張力が２０．０ｍＮ／ｍ以上５０．０ｍＮ／ｍ以下であるノニオン性界面活性剤＜粒子（Ｂ）＞メジアン径が１μｍ以上５０μｍ以下である無機化合物粒子【選択図】なし
POWDER DISPERSION COMPOSITION FOR HYDRAULIC COMPOSITION
水硬性組成物用粉末分散剤組成物
SHIMADA KOHEI (author) / SAGAWA KEIICHIRO (author)
2022-09-13
Patent
Electronic Resource
Japanese
DISPERSION AGENT FOR HYDRAULIC COMPOSITION AND HYDRAULIC COMPOSITION
| European Patent Office | 2021