Oxo 1000 Polymeric phenol Sovereign Chemical Antioxidants >> Phenolic Rubber - Elastomer (Chloroprene, Butyl …) ADHESIVE Economical non-staining, non-discoloring antioxidant. High molecular weight for good heat stability. Effective in NR and synthetic polymers. High molecular weight, non staining, non discoloring antioxidant. Provides good heat stability.