PAPI 23 | Univar Solutions | PAPI 23 is a light brown, low viscosity polymeric Methylene Diphenyl Diisocyanate (MDI) containing high quantities of Monomeric Methylene Diphenyl Diisocyanate (MMDI) isomers with an average functionality of 2.2-2.3. It may be used to produce viscoelastic...view more PAPI 23 is a light brown, low viscosity polymeric Methylene Diphenyl Diisocyanate (MDI) containing high quantities of Monomeric Methylene Diphenyl Diisocyanate (MMDI) isomers with an average functionality of 2.2-2.3. It may be used to produce viscoelastic (VE) and high resiliency (HR) foams. view less | Request Sample |