| 摘要 |
PROBLEM TO BE SOLVED: To provide a copolymer composition for cement admixtures which contains a structural unit derived from an unsaturated polyalkylene glycol ether monomer and a structural unit derived from an unsaturated carboxylic acid monomer, and can provide non-conventional high performance cement admixtures. SOLUTION: The copolymer composition for cement admixtures includes a polycarboxylic acid copolymer containing a structural unit (I) derived from an unsaturated polyalkylene glycol ether monomer (a) and a structural unit (II) derived from an unsaturated carboxylic acid monomer (b), and a non-polymerizable organic sulfonic acid having a molecular weight of not more than 300 and/or a salt thereof. COPYRIGHT: (C)2010,JPO&INPIT |
