发明名称 |
CEMENT ADMIXTURE AND CEMENT COMPOSITION |
摘要 |
It is an object of the present invention to provide a cement admixture capable of exhibiting high cement dispersing ability at low addition levels, in particular capable of displaying excellent initial dispersing ability and dispersion retaining ability even in a high water reducing ratio range, and a cement composition in which this admixture is used. A cement admixture comprising two polymers, namely a polymer (A) and a polymer (B), as essential constituents in a ratio of polymer (A) to polymer (B) between 1 to 99/99 to 1% by mass, wherein the polymer (A) is a polymer comprising, as essential constituent units, a constituent unit (I) derived from an unsaturated (poly)alkylene glycol ether monomer (a) and a constituent unit (II) derived from an unsaturated monocarboxylic acid monomer (b) and wherein the constituent units (I) and (II) each ac-counts for not less than 1% by mass relative to all constituent units but the constituent unit (I) accounts for not more than 50 mole percent relative to all constituent units and, wherein the polymer (B) is an oxyalkylene group- or polyoxyalkylene group- and carboxyl group-containing polymer.
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申请公布号 |
WO02096823(A1) |
申请公布日期 |
2002.12.05 |
申请号 |
WO2002JP05144 |
申请日期 |
2002.05.28 |
申请人 |
NIPPON SHOKUBAI CO., LTD.;YAMASHITA, AKIHIKO;TANAKA, HIROMICHI;HIRATA, TSUYOSHI;UNO, TORU;ONDA, YOSHIYUKI |
发明人 |
YAMASHITA, AKIHIKO;TANAKA, HIROMICHI;HIRATA, TSUYOSHI;UNO, TORU;ONDA, YOSHIYUKI |
分类号 |
C04B24/02;C04B24/04;C04B24/26;C04B24/32;C04B40/00;C04B103/40;C08F283/06;C08F290/06;C08L33/04;C08L51/08;C08L71/02;(IPC1-7):C04B24/26;C04B28/02;C08L33/14;C08L29/10;C08F218/18;C08F220/28 |
主分类号 |
C04B24/02 |
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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