发明名称 |
Cement dispersant, its production process, and cement composition using the cement dispersant |
摘要 |
Disclosed are the following: a cement dispersant which is excellent in initial dispersibility and further in flow retainability of cement, because of using a polymer having a proper molecular weight distribution; a process for producing this cement dispersant; and a cement composition using this cement dispersant. The cement dispersant comprises a water-soluble polymer (P) as a main component, and is characterized by displaying an area proportion (a value (A-B) given by subtracting an area ratio B of a lower molecular weight side portion from an area ratio A of a higher molecular weight side portion) in the range of 13 to 60%.
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申请公布号 |
US6946505(B2) |
申请公布日期 |
2005.09.20 |
申请号 |
US20020266129 |
申请日期 |
2002.10.07 |
申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
YUASA TSUTOMU;SAKAMOTO NOBORU;HIRATA TSUYOSHI |
分类号 |
C04B24/26;C04B24/32;(IPC1-7):C08K3/00 |
主分类号 |
C04B24/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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