https://www.avient.com/news/polyone-launches-dual-protection-light-barrier-clear-packaging-chinaplas-2014
Available as a granular masterbatch for injection molding, thermoforming or extrusion, these new additives offer superior performance for most clear polymers, including polyethylene (PE), polypropylene (PP), polycarbonate (PC), polyethylene terephthalate (PET) and polystyrene (PS).
https://www.avient.com/products/polymer-colorants/solid-color-masterbatches/remafin-ep-white-colorants
The colorant solutions are available in PP and PE (HDPE and LDPE) and produced with ingredients tested to European Pharmacopeia 3.1.3 and 3.1.5 as well as to USP chapters , including class VI (a requirement for ophthalmic and nasal drugs) and USP and (light transmission).
