High Performance Stabilization Systems for PP and PP-Based TPO Automotive Applications

How can the long-term thermal stabilization (LTTS) of polypropylene be improved so that it meets new, more demanding standards?

Polyolefins, in particular polypropylene (PP), are intrinsically not stable enough to withstand chemical attack by oxygen and consequently they degrade. Antioxidants were developed in the 1960s and 1970s during the industrialization of PP. The most suitable stabilization chemicals are sterically hindered phenols, which work very efficiently at temperatures varying from low (solid state PP) to very high (300°C – molten state PP). Keep Reading