| 摘要 |
PROBLEM TO BE SOLVED: To provide an aqueous acrylic-modified starch dispersion excellent in long-term storage stability and a water-based coating composition which is obtained by using the dispersion and can form a coating film excellent in finishing property, curability, weatherability, etc. SOLUTION: The aqueous dispersion is obtained by separately graft-polymerizing a radical polymerizable unsaturated monomer mixture for forming a hydrophobic polymer and a radical polymerizable unsaturated monomer mixture for forming a hydrophilic polymer in the presence of starch and/or modified starch and, optionally, neutralizing carboxyl groups in acrylic-modified starch with a basic substance. COPYRIGHT: (C)2010,JPO&INPIT
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