Kern-Multischalen-Teilchen in Emulsion, Verfahren zu ihrer Herstellung und sie enthaltende Harzzusammensetzung

摘要

A cored multi-shell emulsion particle consisting of a core particle, a void layer existing in the exterior of the core particle and a shell layer, each of which has a diameter of phi , d and D, respectively, and the ratio of phi , d and D is in the following range: $$ The\; particle\; exhibits\; excellent\; hiding\; power,\; brightness,\; gloss\; and\; thermal\; insulation\; property\; as\; an\; organic\; pigment\; without\; impairing\; drying\; ability\; and\; strength\; of\; coated\; layer.\; The\; particle\; can\; be\; usefully\; employed\; in\; resin\; compositions\; for\; paper\; coating,\; for\; paints\; and\; for\; thermal\; recording\; materials.\; The\; particle\; can\; be\; prepared\; by\; successive\; emulsion\; polymerizations\; of\; vinyl\; monomers\; (a),\; (b)\; and\; (c)\; to\; form\; a\; core\; of\; polymer\; (A)\; coated\; in\; order\; with\; layers\; of\; polymer\; (B)\; and\; polymer\; (C),\; wherein\; monomer\; (b)\; is\; selected\; to\; yield\; a\; polymer\; (B)\; capable\; of\; being\; swelled\; by\; contact\; with\; alkali;\; thereafter,\; polymer\; (B)\; is\; swelled\; and\; the\; resulting\; particle\; is\; dried.$$