| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide heat-expandable microcapsules which, when used in foam molding, hardly generate coloration and an offensive odor while keeping a high expansion ratio and high-temperature durability, a heat-expandable thermoplastic resin masterbatch using the heat-expandable microcapsules, a foam-molded article, and a method for producing the heat-expandable microcapsules.SOLUTION: Provided are heat-expandable microcapsules having a volatile expansion agent included as a core agent in a shell comprising a polymer. The shell comprises: a polymer formed by polymerizing a monomer composition comprising a nitrile-based monomer and a hydroxyl group-containing monomer containing a radically polymerizable double bond and a hydroxyl group; and a polyfunctional reactive compound having two or more functional groups in a molecule, which are reactive with the hydroxyl group, and no radically polymerizable double bond.</p> |
