Additive Stabilized Recycled Polyurethane Polyol Dispersion

The majority of post-consumer polyurethane waste today is sent to a landfill or incinerated. Recycling of polyurethane facilitates a circular economy by creating new high value products. In the chemolysis process, polyurethane foam will be decomposed into polyols that can be reused in a new polyurethane foam formulation. These recycled polyurethane polyols have a known challenge related to hard segment particles' sedimentation occurring over time. This work is motivated to investigate the impact of stabilizer additives on recycled polyurethane polyol stability. In addition to improved stability, the recycled polyol dispersions with stabilization additives exhibit a slightly better cell-opening foam property.