| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a multi-branched polyalkylene glycol-based polymer useful for various uses, especially cement admixture uses, to provide a cement admixture using the same, to provide a cement composition using the same, and to provide a method for producing the multi-branched polyalkylene glycol-based polymer, by which the multi-branched polyalkylene glycol-based polymer can simply and efficiently be produced at a low cost. <P>SOLUTION: There is provided the multi-branched polyalkylene glycol-based polymer containing a polyalkylene glycol chain and having a multi-branched structure, characterized in that the polymer has a structure in which the polyalkylene glycol chain is bound to the residue of a compound having three or more active hydrogen atoms, and a terminal oxygen atom at at least one of the other ends of the polyalkylene glycol chain is bound to the main chain terminal of a polymer containing constituting units originated from a vinylic monomer component through an organic residue. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
