Covestro and puren certify purenit production with bio-circular MDI binder

puren has certified its entire purenit® production to the ISCC PLUS standard after commissioning a new production line at its Obermarchtal site. The certification enables puren to use Covestro's Desmodur® CQ MS, an MDI made from bio-circular feedstocks through mass balance allocation, as a binder. puren announced a new purenit® product with an improved environmental footprint, with market launch planned for 2027.

Key facts

Market context

Methylene diphenyl diisocyanate (MDI) is a key building block for polyurethane and polyisocyanurate foams, which are widely used as rigid insulation. Rigid PUR/PIR boards are valued for their thermal performance and are used in building envelopes, including roofs, walls and floors, as well as in refrigerated transport and vehicle interiors. Demand therefore tracks construction activity, energy-efficiency rules and the interior fit-out of recreational and commercial vehicles and marine craft. Producers of insulation panels increasingly face customer requests for lower-carbon materials, and suppliers can meet this through mass balance approaches, where bio-based or recycled feedstock is credited to a product across the production system rather than physically isolated. Certification schemes such as ISCC PLUS give buyers a traceable way to verify these claims. For isocyanate suppliers, offering bio-circular grades can differentiate their portfolios in a market where pricing is often driven by commodity MDI balances.

Source: official release on covestro.com. Summary and context written by Market Krystal.