(652d) Recycled Polyurethane Polyol Dispersion with Improved Stability

The majority of post-consumer polyurethane waste today is sent to a landfill or incinerated. To enable a circular economy, Dow Polyurethanes has recently launched the RENUVAâ„¢ Mattress Recycling initiative. In the novel hybrid glycolysis/acidolysis process, polyurethane foam from mattresses will be recycled into polyols that can be reused in a new polyurethane foam formulation. These recycled polyurethane polyol products have particles sedimentation occurring over time. This work comes up with stabilizer additives to improve recycled polyurethane polyol product stability. The stabilization solutions do not lead to a significant increase in the viscosity, nor interfere with a polyurethane foaming process that makes use of the product.