发明名称 |
Cement dispersant, method for production thereof, and cement composition using the dispersant |
摘要 |
<p>A cement dispersant having excellent ability to prevent slump loss and high water-reducing property which comprises a polycarboxylic acid type polymer having a specific molecular weight distribution, a method for the production thereof, and a cement composition using the dispersant are provided. The cement dispersant comprises as a main component thereof a polycarboxylic acid type polymer (A), having a weight average molecular weight in the range of 10,000 to 500,000 in terms of polyethylene glycol determined by gel permeation chromatography, and having a value determined by subtracting the peak top molecular weight from the weight average molecular weight in the range of 0 to 8,000. <IMAGE></p> |
申请公布号 |
EP1142847(A2) |
申请公布日期 |
2001.10.10 |
申请号 |
EP20010112350 |
申请日期 |
1996.06.27 |
申请人 |
NIPPON SHOKUBAI CO., LTD.;CONSTRUCTION RESEARCH & TECHNOLOGY GMBH |
发明人 |
TANAKA, YOSHIO;OHTA, AKIRA;HIRATA, TSUYOSHI;UNO, TORU;YUASA, TSUTOMU;TAHARA, HIDEYUKI |
分类号 |
C04B24/26;C04B24/32;(IPC1-7):C04B24/26 |
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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