Papi 2940 Isocyanate Dow Chemical PU - Isocyanates >> MDI, diphenylmethane diisocyanate >> Polymeric MDI ADHESIVE PAPI 2940 Polymeric MDI PAPI* 2940 polymeric MDI is a polymethylene polyphenylisocyanate that contains MDI. This product’s low viscosity, low functionality, increased diphenylmethane diisocyanate content and increased percentage of orthopara isomers make PAPI 2940 polymeric MDI highly versatile. This product also offers delayed gel times, which results in better flow into molds for semi-flexible and integral skin foams. Adhesives Packaging Furniture Polymethylene polyphenylisocyanate that contains MDI. Possesses low viscosity, low functionality, increased diphenylmethane diisocyanate content and increased percentage of orthopara isomers. Offers delayed gel times.