SHANGHAI, China (Oct. 20, 2008) — Bayer MaterialScience has started production at its methylene diphenyl diisocyanate complex at Bayer's integrated site in Shanghai.
The plant has capacity of 350,000 metric tons per year.
Bayer also has now broken ground on a 250,000 tons a year toluene diisocyanate plant at the same site which is scheduled to come on stream in 2010.
The new MDI plant is the largest one of its kind in the world, according to Bayer, while the TDI plant will use the group's exclusive gas-phase technology, which it says cuts solvent use and reduces costs.
MDI is used primarily in making rigid polyurethane foams, used in the refrigeration chain and as thermal insulation in the building industry. TDI is used in large quantities to make flexible polyurethane foam for upholstered furniture, mattresses, and car seats.