abstract |
The present invention relates to expandable polyolefin particles containing swelling agents, which particles are coated with 0.01 to 3% by weight of salts and / or esters of long chain fatty acids, preferably calcium stearate, to prevent aggregation during expansion.n n n Expandable Polyolefins, Cake Antioxidants, Antistatic Agents, Antiblocking Agents |