MODIFIED BLOWING AGENT SURFACE-TREATED WITH METALLIC SILOXYLATED COMPOUND AND POLYMER RESIN COMPOSITION INCLUDING THE SAME

摘要

A modified blowing agent is provided to exhibit excellent dispersibility in resins when being added to polymer resin, and to improve flowability of the polymer resin in processing using an extruder or catapult. A modified blowing agent is obtained by coating the surface of a blowing agent powder with a metal siloxane-based compound. The metal siloxane-based compound is a compound represented by the following formula 1 having a molecular weight of 5000-40000, a compound represented by the following formula 2 having a molecular weight of 5000-30000, or a compound represented by the following formula 3 having a molecular weight of 10000-40000. The metal siloxane-based compound is contained in an amount of 0.1-10 parts by weight based on 100 parts by weight of the blowing agent.