| 摘要 |
PROBLEM TO BE SOLVED: To provide an anti-blocking agent for polyolefin or polyester that improves the master batch processability, that effectively suppresses the occurrence of die drip or foaming during the molding of master batch, as well as that effectively resolves the adhesion to extrusion screw or dusting at the extruder inlet port and furthermore that suppresses the production cost when making a stretch film.SOLUTION: Provided is an anti-blocking agent for polyolefin or polyester comprising silica particles surface-treated with amino alkyl alkoxy silane, and in which, characterized, the content of unreacted silane is suppressed below 3 mg/kg. |
