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.