| 摘要 |
PROBLEM TO BE SOLVED: To provide a water absorptive graft polymer that has a small difference in water absorption between a liquid having high salt concentration, for example, body fluid and a liquid having no or very low salt concentration, for example, water. SOLUTION: The water absorptive graft polymer is obtained by grafting acrylic acid and/or an acrylic salt onto polyglycerol. COPYRIGHT: (C)2005,JPO&NCIPI
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