https://www.avient.com/news/avient-showcase-sustainable-textile-innovations-yarn-expo-autumn-shanghai
It is specially formulated for polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), and Nylon.
The GRS-certified color and additive solutions from Avient contain a required percentage of pre-consumer or post-consumer recycled polyester primarily from recycled PET, Nylon, PP, PE, and other resin bases that aim to save on energy and water use during the spin-dyeing (dope-dyeing) process.