Methylene diphenyl isocyanate (MDI) is an essential raw material used primarily to manufacture polyurethane foam used in a variety of products and industrial applications. Polymeric MDI is a technical grade mixture of diphenylmethane-4,4'-diisocyanate with isomer and homologues of higher functionality. It is used in system with polyols to produce rigid polyurethanes foam, and also in semi-rigid foam, CASE application.

Polymeric MDI is mainly used in producing Polyurethane rigid foam as Part B in two-component system. The Part A is blended polyols formulated as requirement of application, with catalyst, silicone, flame retardant and blowing agent.

MDI Manufacturers in the World

• WANHUA ( Wannate PM200 ), biggest manufacturer in the world

• BASF ( M20S ), having factory in China

• COVESTRO ( Barrel 44V20L ), having factory in China

• HUNTSMAN ( Suprasec 5005 ), having factory in China

• Dow ( PAPI 27 )

• Tosoh ( MILLIONATE MR-200 ), having factory in China

• KMCI ( COSMONATE M-200 )