| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a polycarboxylic acid-based polymer having high dispersing performance in various solid powder systems. <P>SOLUTION: The polycarboxylic acid-based polymer is composed of a structural unit (I) comprising a reactive alcohol-alkylene oxide adduct, a structural unit (II) comprising a reactive dibasic acid, a structural unit (III) comprising an unsaturated carboxylic acid-based compound and, optionally preferably, a structural unit (IV) containing a polyamide polyamine therein, wherein fumaric acid is used as a partial or main material of the structural unit (II). <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
