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DISPERSANT COMPOSITION FOR HYDRAULIC POWDER
To provide a dispersant composition for a hydraulic powder capable of imparting excellent freeze-thaw resistance to a hardened body of a hydraulic composition.SOLUTION: There is provided a dispersant composition for a hydraulic powder which comprises a copolymer (A) containing a constitutional unit (A1) represented the following formula (A1) and a constitutional unit (A2) represented by the following formula (A2) as constitutional units and having a weight average molecular weight of 40000 or more and 60000 or less, wherein in the copolymer (A), the ratio of the constitutional unit (A2) to the total of the constitutional unit (A1) and the constitutional unit (A2) is 20 mass% or more and 28 mass% or less and in the copolymer (A), the ratio of a compound having a molecular weight of 8000 or less is 5.0 mass% or more and 15.0 mass% or less. (A1):-[CH2-C(R1a)(COOM1)]-, (A2):-[CH2-C(R2a)(X1-O-(CH2CH2O)n1-R3a)]-.SELECTED DRAWING: None
【課題】水硬性組成物の硬化体に優れた凍結融解抵抗性を付与できる水硬性粉体用分散剤組成物を提供する。【解決手段】構成単位として下記式（Ａ１）で表される構成単位（Ａ１）及び下記式（Ａ２）で表される構成単位（Ａ２）を含み、重量平均分子量が４０，０００以上６０，０００以下である共重合体（Ａ）を含有する水硬性粉体用分散剤組成物であって、前記共重合体（Ａ）は、構成単位（Ａ１）及び構成単位（Ａ２）の合計に対する構成単位（Ａ２）の割合が２０質量％以上２８質量％以下であり、前記共重合体（Ａ）は、分子量８，０００以下の化合物の割合が５．０質量％以上１５．０質量％以下である、水硬性粉体用分散剤組成物。（Ａ１）：－［ＣＨ２－Ｃ（Ｒ１ａ）（ＣＯＯＭ１）］－（Ａ２）：－［ＣＨ２－Ｃ（Ｒ２ａ）（Ｘ１－Ｏ－（ＣＨ２ＣＨ２Ｏ）ｎ１－Ｒ３ａ）］－【選択図】なし
DISPERSANT COMPOSITION FOR HYDRAULIC POWDER
To provide a dispersant composition for a hydraulic powder capable of imparting excellent freeze-thaw resistance to a hardened body of a hydraulic composition.SOLUTION: There is provided a dispersant composition for a hydraulic powder which comprises a copolymer (A) containing a constitutional unit (A1) represented the following formula (A1) and a constitutional unit (A2) represented by the following formula (A2) as constitutional units and having a weight average molecular weight of 40000 or more and 60000 or less, wherein in the copolymer (A), the ratio of the constitutional unit (A2) to the total of the constitutional unit (A1) and the constitutional unit (A2) is 20 mass% or more and 28 mass% or less and in the copolymer (A), the ratio of a compound having a molecular weight of 8000 or less is 5.0 mass% or more and 15.0 mass% or less. (A1):-[CH2-C(R1a)(COOM1)]-, (A2):-[CH2-C(R2a)(X1-O-(CH2CH2O)n1-R3a)]-.SELECTED DRAWING: None
【課題】水硬性組成物の硬化体に優れた凍結融解抵抗性を付与できる水硬性粉体用分散剤組成物を提供する。【解決手段】構成単位として下記式（Ａ１）で表される構成単位（Ａ１）及び下記式（Ａ２）で表される構成単位（Ａ２）を含み、重量平均分子量が４０，０００以上６０，０００以下である共重合体（Ａ）を含有する水硬性粉体用分散剤組成物であって、前記共重合体（Ａ）は、構成単位（Ａ１）及び構成単位（Ａ２）の合計に対する構成単位（Ａ２）の割合が２０質量％以上２８質量％以下であり、前記共重合体（Ａ）は、分子量８，０００以下の化合物の割合が５．０質量％以上１５．０質量％以下である、水硬性粉体用分散剤組成物。（Ａ１）：－［ＣＨ２－Ｃ（Ｒ１ａ）（ＣＯＯＭ１）］－（Ａ２）：－［ＣＨ２－Ｃ（Ｒ２ａ）（Ｘ１－Ｏ－（ＣＨ２ＣＨ２Ｏ）ｎ１－Ｒ３ａ）］－【選択図】なし
DISPERSANT COMPOSITION FOR HYDRAULIC POWDER
水硬性粉体用分散剤組成物
SASHIHARA YOSHIAKI (author) / NAKAMURA KEISUKE (author)
2023-03-03
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
C08K
Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe
,
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
/
C08L
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
,
Massen auf Basis makromolekularer Verbindungen
POWDER DISPERSANT COMPOSITION FOR HYDRAULIC COMPOSITIONS
| European Patent Office | 2024