Trinseo has signed a joint development agreement with RWDC Industries to advance PHA coatings for packaging, aiming to bring more compostable and recyclable barrier options into commercial use.
The effort focuses on scaling shelf-stable PHA (polyhydroxyalkanoate) dispersion technology for production lines, as packaging makers search for materials that can satisfy both compostability and recyclability demands.
Under the agreement, the companies are working to optimise PHA coatings for packaging applications by developing dispersion formulations that deliver reliable barrier performance against oil, grease and moisture. Trinseo has moved the technology from its pilot coater facility, achieving stated “runnability objectives” across multiple coating methods, demonstrating its potential for broader adoption.
The partners have reformulated the PHA dispersion system to function within standard paper-drying parameters, resulting in stronger film formation and more consistent coating quality. RWDC Industries supplies PHA dispersions produced from non-food-grade feedstocks. The materials hold biobased, industrial and home-compostable, and marine and fresh-water biodegradable certifications from TUV Austria.
The PHA dispersion products can be processed on existing coating lines alongside other water-based systems. This capability enables production of hybrid coatings engineered to enhance barrier performance without compromising compostability or recyclability characteristics. The companies are also assessing potential applications outside packaging, including textiles, construction materials and adhesives.
Trinseo technical service and development specialist Alan Piwowar said: “Since collaborating with RWDC in May of 2023, we have made substantial advances in PHA dispersion technology.
“Our prototypes demonstrate excellent film formation and strong barriers against common food substances such as oil, grease and moisture. By optimising PHA dispersions for barrier coating applications.”
RWDC business development director Geoff Nobes added: “PHA dispersion technology will be vital to delivering compostable and recyclable offerings within the packaging industry.”
“Working with Trinseo, we can propel dispersion technology to the market to meet customer requirements for a variety of applications and believe that, together, we can support the packaging industry in its transition to adopt more responsible packaging solutions.”