METHOD FOR RECYCLING DISCOLORED POLYOLEFINS

摘要

Polyolefins, especially those containing a phenolic antioxidant, are prone to discoloration upon improper processing at elevated temperatures or upon prolonged aging. Such discolored polyolefins can be recycled as essentially non-colored useful polymers by the addition thereto of a hydroxylamine of the formula T1T2NOH where T1 and T2 are independently e.g. alkyl, cycloalkyl, benzyl or substituted benzyl.