Method of preparation of high molecular weight polybutylene and thermoplastic polymer blends

摘要

Continuous blending of high mol. polyisobutylene (I) and thermoplastic polymers (II) in an extruder comprises dosing (I) into the extruder and homogenising in kneading stage(s), heating up and subjecting to controlled mol. wt. degradation and then introducing (II) into the (I) melt through a side port and homogenising. Also claimed is the homogeneous blend obtd.