Trinseo Offers Recycled Polystyrene via Dissolution Technology

Trinseo (NYSE: TSE), a global materials company and manufacturer of plastics, latex binders and synthetic rubber recently commercialized its recycled polystyrene (PS) from dissolution technology and is offering a new material using this process -- STYRON™ CO₂RE™ 687DI30. This is the first of a series of recycled PS products that Trinseo intends to launch under the STYRON™ CO₂RE™ brand in the coming years.

With this material / recycling method, post-consumer recycled (PCR) material is dissolved in a solvent followed by a series of purification steps to separate the polymer from additives and contaminants. The material is fed into a polymerization reactor train and the result is a PS polymer with 30 percent PCR content for use in applications including consumer electronics, packaging, and food contact applications if a functional barrier is present to ensure compliance.

According to Trinseo’s Plastics Circularity Manager, Julien Renvoise, STYRON™ CO₂RE™ 687DI30 Polystyrene supports a circular economy. "By reclaiming used plastic, we can make sure that a material that otherwise might have ended up as post-consumer waste not only is reused productively but contributes to sustainable manufacturing and a positive impact on the environment.”

To measure impact, Trinseo compared a general-purpose polystyrene produced with 100 percent fossil fuel with a batch made from 30 percent post-consumer recycled content in a lifecycle assessment and found a 15 percent reduction in CO₂ emissions. In another study Trinseo found that performance properties remained similar. This includes transparency, a difficult property to achieve with recycled content.

Dissolution is a physical recycling approach for PS that preserves the molecular structure of the recyclate. Trinseo has been focused on finding ways to recycle PS due to the polymer’s unique capacity for full circularity including its intrinsic capability to be fully recycled into the constituent monomer.

Recycled PS is just one of Trinseo’s sustainable materials aimed at circularity. The company also is involved with depolymerization with technology provided by partner, Recycling Technologies, and plans to build a dedicated plant at its Tessenderlo, Belgium location. This will be one of two polystyrene recycling plants in Europe estimated to add a total of 30,000 tons of polystyrene feedstock into the European marketplace.

About Trinseo

Trinseo (NYSE:TSE) is a global materials solutions provider and manufacturer of plastics, latex binders, and synthetic rubber with a focus on delivering innovative, sustainable, and value-creating products that are intrinsic to our daily lives. Trinseo is dedicated to making a positive impact on society by partnering with like-minded stakeholders, and supporting the sustainability goals of our customers in a wide range of end-markets including automotive, consumer electronics, appliances, medical devices, packaging, footwear, carpet, paper and board, building and construction, and tires. Trinseo had approximately $3.0 billion in net sales in 2020. With the May 2021 acquisition of the PMMA business, the Company has 24 manufacturing sites around the world, and approximately 3,500 employees. For more information, please visit: www.trinseo.com.

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