| 摘要 |
<p>[PROBLEMS] To provide a polycarboxylic acid polymer having high dispersing ability in various solid-powder systems. [MEANS FOR SOLVING PROBLEMS] The polycarboxylic acid polymer is one formed from a reactive alcohol derivative having a polymerizable bonding site and a dibasic acid derivative, and is characterized in that the reactive alcohol derivative has a polyalkylene oxide chain having an end part formed by C<SUB>3</SUB> or C<SUB>4</SUB> polyalkylene oxide addition, the content of the C<SUB>3</SUB> or C<SUB>4</SUB> alkylene oxide in the end parts being 0.1-30 mol% based on all alkylene oxide chains.</p> |
