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Last updated January 31, 2026
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Heterocyclic mdi polyisocyanate formulations: BASFRecent Research Landscape

Spontaneous polymerization of methylene diphenyl diisocyanate during storage leads to viscosity instability and batch rejection. Incorporating specific heterocyclic compounds controls the reactivity of the isocyanate groups to maintain formulation shelf-life.

What technical problems is BASF addressing in Heterocyclic mdi polyisocyanate formulations?

Poor aqueous phase stability

(9)evidences

Standard polyisocyanate formulations often suffer from excessive viscosity and poor handling characteristics during processing. Reducing fluid resistance allows for improved flow and easier application in complex molding or coating scenarios.

Thermal and oxidative degradation

(3)evidences

Conventional polyurethane linkages suffer from low decomposition temperatures and poor heat resistance. Replacing them with oxazolidinone structures addresses the inherent thermal degradation of standard isocyanate-based materials.

Ultraviolet induced oxidative yellowing

(2)evidences

Polyisocyanate compositions suffer from aesthetic and structural degradation during processing or storage. Preventing discoloration ensures material integrity and visual consistency in high-performance coatings.