Heat stabilizers protect or reduce the effects of plastics from heat. Of special importance are the halogen containing polymers such as polyvinyl chloride which is very sensitive to heat. (RDC 4/9/2009) 

Compounding  
Phosphorus containing Heat Stabilizers   

Stabilizers    

Stearate Stabilizers    

Recent Journal Articles

1/7/2010
Improving the processability of biodegradable polymer by stearate additive
(692–700)
Journal of Applied Polymer  Science 120 #2 (2011)
Yu et al of the Chinese Academy of Sciences, China formed maleated poly(propylene carbonate)/calcium stearate (MAPPC/CaSt2) composite was prepared through melt-extruding poly(propylene carbonate) (PPC) with maleic anhydride and CaSt2.  The flow instability of biodegradable PPC was greatly alleviated due to the stearate additive.  The coordination interaction between MAPPC and calcium ion also contributes to the enhanced thermal stability and high melt stability of composites.  (RDC 1/11/2011)