| 发明名称 |
Method for producing polycarboxylic acid for cement dispersant and cement composition |
| 摘要 |
The present invention provides a method for producing a cement dispersant having high percentage in water reduction rate and appropriate air-entraining property. This method for producing a polycarboxylic acid for a cement dispersant is characterized in that alkylene oxide is added at a specific temperature range.
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| 申请公布号 |
US6388038(B1) |
申请公布日期 |
2002.05.14 |
| 申请号 |
US20000724009 |
申请日期 |
2000.11.28 |
| 申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
HIRATA TSUYOSHI;YUASA TSUTOMU;SHIOTE KATSUHISA;NAGARE KOICHIRO;IWAI SYOGO |
| 分类号 |
C04B24/26;C04B24/32;C08F290/06;C08G65/26;C08G65/332;C08L71/02;(IPC1-7):C08F222/10 |
主分类号 |
C04B24/26 |
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