Global styrenics specialist Ineos Styrolution and Polystyvert, an innovator in dissolution technology based in Montreal, QC, are collaborating to convert post-consumer polystyrene (PS) into a new, high-quality PS resin.

Polystyvert uses a patented technology to dissolve polystyrene waste in a solvent. The process mechanically and chemically separates contaminants and additives before finally separating the original polymer from the solvent. The end product is a “clean” polymer that may be used as a new raw material resin again.

“Dissolution is an efficient, low-energy technology that offers a cost-effective solution to recycle polystyrene in a closed loop,” said Solenne Brouard, CEO of Polystyvert. Using this method, “recycled polystyrene is produced at a competitive price, thus opening up the full potential for a circular economy.”

Polystyvert said that its in-depth purification technology offers the ability to treat all types of feedstock, from industrial waste to post-consumer streams. The technology can eliminate a range of hard-to-remove contaminants such as pigments and brominated flame retardants. Recycled PS pellets can then be used to manufacture various categories, including food-grade applications, of PS-based products.

The joint development agreement reinforces Ineos Styrolution’s commitment to explore continued research into advanced recycling technologies. “The purification capacity of Polystyvert’s technology is unique,” said Ricardo Cuetos, Vice President, Ineos Styrolution Americas, Standard Products. “The high quality of the final recycled polystyrene resin is essential to achieving a truly circular economy in key markets like foodservice packaging.”

Brouard added that Polystyvert is “pleased to work with Ineos Styrolution to set up a truly circular economy for polystyrene. Our common goal is to recycle as much polystyrene as possible and a partnership, as such, will make a difference.”