发明名称 |
Cement admixture and cement composition |
摘要 |
The cement admixture of the present invention can improve the workability by displaying sufficient viscosity decreasing ability and initial dispersing ability even under a low temperature environment as well as high dispersing ability and dispersion retaining ability even in a high water reducing ratio range. The above-mentioned cement admixture comprises four components of a copolymer (A) containing a constituent unit (I) derived from the unsaturated (poly)alkylene glycol ether monomer (a) and a constituent unit (II) derived from a maleic acid monomer (b), a specific unsaturated (poly)alkylene glycol ether monomer (a), a non-polymerizable (poly)alkylene glycol (B) having no alkenyl group, and a polymer (C) having an oxyalkylene group or a polyoxyalkylene group and a carboxyl group, which is different from the copolymer (A).
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申请公布号 |
US7253220(B2) |
申请公布日期 |
2007.08.07 |
申请号 |
US20040791730 |
申请日期 |
2004.03.04 |
申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
YAMASHITA AKIHIKO;TANAKA HIROMICHI;UNO TORU;ONDA YOSHIYUKI;HIRATA TSUYOSHI |
分类号 |
C04B24/26;C08G65/332;C08L71/02 |
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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