Recycled Pet Flakes and Rapeseed Oil as Feedstock for Rigid Polyurethane Foams

Among different poly(ethylene terephthalate) (PET) recycling techniques chemical recycling is the most favourable and depolymerizing PET using glycolysis offers following advantage such as lower reagent amounts, lower temperatures and pressure [1, 2]. To prevent some of the PET polyol drawbacks such as incompatibility with the physical blowing agents and high viscosity, vegetable oil based polyols are introduced in polyol system [3]. Three bio/recycled polyols using recycled PET and rapeseed oil (RO) were successfully synthesized using continuous two-step method