发明名称 |
SLUMP LOSS PREVENTING AGENT FOR CONCRETE, ADMIXTURE FOR CONCRETE AND CONCRETE |
摘要 |
PROBLEM TO BE SOLVED: To provide an admixture using a slump loss preventing agent giving excellent slump loss preventing ability and giving excellent shrinkage reducing ability and compressive strength to a hardened body even using moderate heat portland cement and concrete using the admixture. SOLUTION: A carboxylic acid monoester copolymer obtained by radical-polymerizing a mixture containing≥90 mol% in total of respective following monomers in a molar ratio of 75/25-45/55 under a prescribed condition and having mass average molecular weight of 2,000-60,000 is used. A carboxylic acid monoester expressed by formula (1) and an allyl alcohol-based compound expressed by formula (2) are used. In the formulas (1) and (2), R represents a 4C or 5C alkyl group, (n) represent integers of 2-4 and A represents a residue obtained by removing all hydroxy groups from a polyalkylene glycol having a polyoxyalkylene group comprising 2-150 oxyethylene units only or 2-150 in total of oxyethylene units and oxypropylene units. COPYRIGHT: (C)2008,JPO&INPIT |
申请公布号 |
JP2008156137(A) |
申请公布日期 |
2008.07.10 |
申请号 |
JP20060344004 |
申请日期 |
2006.12.21 |
申请人 |
TAKEMOTO OIL & FAT CO LTD |
发明人 |
OKADA KAZUHISA;KINOSHITA MITSUO |
分类号 |
C04B24/26;C04B28/02;C04B103/40 |
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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