Reduced yellowing in recycled PET bottles

摘要

Clariant has announced the introduction of a liquid additive masterbatch that is said to minimise yellowing and greying of PET polymers caused by the introduction of post-consumer-recycled resin (PCR). The optical brightening products, which are part of the HiFormer family of liquid masterbatch solutions and application technology, can be used in a wide variety of PET resin grades and processes, including injection blow moulding, injection moulding and extrusion. The additive has received approval for food-contact applications from the U.S. Food & Drug Administration.