Polyurethane, without the compromise.

A coating that insulates without the poison. A bio-based, isocyanate-free polyurethane thermal-insulation system — built from waste oils and recycled ash.

M-ERA.NET Call 2025 · TÜBİTAK 1071 · 126N553 · 01.05.2026 – 30.04.2029

Scroll into the coating
Inside the wall

A green coating, where the heat is stopped.

Hollow cenosphere microspheres trap still air inside a tough polyurethane film — insulating the wall without a single drop of isocyanate.

The problem · REACH Annex XVII

The industry runs on a poison.

Workers exposed to toxic diisocyanates in Europe: 0

Over 90% of insulation polyurethane is built on isocyanates and fossil feedstocks. Since August 2023 REACH restricts their use. NiPure removes them entirely — and keeps the performance.

€5.25B
European PU foam industry at risk
4.2M
Workers exposed to diisocyanates
~16Mt
PU used in EU insulation each year
2023
REACH Annex XVII now enforced

Sources: European Commission · REACH Annex XVII (Aug 2023) · project state-of-the-art review

3 Partner institutions
3 Countries
36 Months · 2026–2029
6 Work packages
The project

A safe, circular polyurethane for the next generation of insulation.

Macro view of the cenosphere-filled NIPU insulation foam from the opening of the film
The physics
Conduction · Fourier's law cond = k · A · ΔT / d
Convection · Newton's law of cooling conv = h · A · (Ts − T)

A wall loses heat two ways: moving air strips it from the surface (convection), and it crawls through the material itself (conduction). Conventional renders fight this battle at the surface alone. NiPure adds an extra conduction layer: every sealed cenosphere immobilises the air inside it (kair ≈ 0.026 W/m·K), stacking one more high-resistance barrier — R = d / k — in series onto the wall.

The opening frame of the film: the cenosphere-filled coating — an engineered conduction barrier added on top of the conventional system.

Europe's insulation industry consumes roughly 16 million tonnes of polyurethane a year, over 90% of it built on toxic isocyanates and fossil feedstocks. NiPure breaks this linear "make–use–dispose" model with a non-isocyanate polyurethane (NIPU) thermal-insulation coating that is safer to make, bio-based, and recyclable.

Instead of isocyanates and phosgene chemistry, NiPure builds its polymer from cyclic carbonates reacting with bio-based amines. The insulating power comes from hollow cenospheres — glassy microspheres recovered from power-plant fly ash — dispersed through the film to trap still air and cut heat flow.

No isocyanates. No phosgene. No compromise on performance.

The feedstocks are turned from waste into value: domestic waste cooking oils and cenospheres from thermal-power-plant ash. The result is a coating aligned with the European Green Deal and the EU Chemicals Strategy for Sustainability — REACH-compliant by design rather than by exemption.

The consortium combines Kalekim's industrial formulation and scale-up know-how with the synthesis and characterisation strength of tbw research and the National Institute of Chemistry, advancing the technology from TRL 2 toward TRL 6 across 36 months.

Macro view of hollow cenosphere microspheres recovered from power-plant fly ash
Waste into value

Hollow spheres, pulled from the ash.

Cenospheres are microscopic, hollow glass beads left behind when coal burns in thermal power plants. NiPure recovers them from the waste stream and disperses them through the coating — each trapped pocket of still air is a tiny thermal break. A by-product becomes the very thing that stops the heat.

The chemistry

Polyurethane, rebuilt without isocyanate.

Conventional polyurethane forms when an isocyanate (made from amines and toxic phosgene) meets a polyol. NiPure replaces that reaction entirely: a five-membered cyclic carbonate opens under attack from a bio-based amine, forming the same durable urethane linkage — the β-hydroxy-urethane — with no isocyanate anywhere in the process.

  • 01 Cyclic carbonate + amine → poly(hydroxy­urethane)
  • 02 Bio-based feedstocks from waste cooking oils
  • 03 Hollow cenospheres for low thermal conductivity
  • 04 REACH-compliant, recyclable end-of-life
Cyclic carbonate → hydroxy-urethane
O C O C C O N C O O OH

β-hydroxy-urethane · the same tough linkage as classic PU — formed with zero isocyanate.

Work plan

Three years, six work packages, three partners.

From M1 (May 2026) to M36 (April 2029): each work package with its lead, partners and span.

Consortium

The people behind NiPure.

Three partners across three countries — one industrial coordinator and two research institutes. Select a name to open their profile.