HOLLOW PARTICLE

Abstract: provided are hollow particles each comprising a shell containing a resin and a hollow portion surrounded by the shell, wherein the resin is constituted by a shell polymer containing a cross-linkable monomer unit, the hollow particles have a true density of 1.16 g/cmor more, and c of the hollow particles calculated from expression (1) below has a value of 0.94 or more. expression (1): c=a�(100−b)/100 (where a represents the value (unit: g/cm) of the true density of the hollow particles, and b represents the value (unit: mass %) of the proportion of a monofunctional monomer unit contained in the shell polymer).

Inventor(s): Ryo Tsumura, Sakyo Yagyu

CPC Classification: C08J9/16 (Making expandable particles)

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