Bio-Based Thermosets PU

S Bio-Based Thermosets PU PUs are condensation polymers of a bifimc-tional or multifunctional triol (polyetherol) with a polyisocyanate. Research efforts at replacing the synthetic polyol with one derived from castor oil are in progress (Lin et al., 2013 Zhang et al., 2014). Commercial polyols partially based on castor oil are already available, and when used as a drop-in replacement in conventional PU, foam slab stock production results in a product that is -25% bio-based. 

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