WÄRMEAUSDEHNBARE MIKROKAPSELN, VERFAHREN ZUR HERSTELLUNG UND VERWENDUNG DERSELBEN

摘要

A heat-expandable microcapsule comprising a polymer shell formed by polymerizing (I) acrylonitrile, a main monomer component, (II) a monomer having carboxyl and (III) a monomer having groups reactive with the carboxyl of the monomer (II) and of a liquid having a boiling point lower than the softening point of the polymer and being encapsulated in the polymer shell. The heat-expandable microcapsules expand within high temperature range, 240 DEG C or above, and have heat-resistance.