Polyolefins need to be protected against thermo - oxidative degration during melt processing and also during service life. The type and quantity of antioxidant used depends on the type of resin and application, typical loadings range from 0.05 ~ 1% by weight. Sterically hindered phenols are powerful antioxidation stablizers for polyolefins.  RAINWELL supply high effecient antioxidant product RY 330 with excellent resistance of extraction.