BASF introduced a biomass-balanced isocyanate for spray polyurethane foam insulation, targeting lower carbon footprint without reformulation. Combined with biomass-balance polyols, the move points to a complete drop-in low-carbon two-component system for SPF applicators.
Isocyanate is historically the harder side of the equation for bio-attributed PU. Polyols have had bio-content options for years through natural-oil and BMB routes, but the isocyanate side typically sat at 100% fossil. A widely-marketed BMB isocyanate, paired with BMB polyols, makes it possible to deliver a fully drop-in low-carbon two-component spray system without changing application parameters.
For SPF applicators the operational appeal is exactly that drop-in property: same density, same closed-cell behaviour, same yield, same cure profile, but with documented bio-share on both A-side and B-side. The trade-offs are price premium and the certification documentation buyers must keep in order.
On the demand side, signals from EU specs and cold-chain customers are clear: embodied-carbon questions are now standard in buyer questionnaires, particularly for projects targeting LEED/BREEAM scoring or municipal procurement with environmental criteria.