BASF has improved the process for manufacturing Lupranol (polyether polyol) so that car components which are made of BASF polyurethane systems emit an average of 20 percent less aldehyde. This enables automotive suppliers, that manufacture acoustic parts, seats and steering wheels or back-foam instrument panels and doors, to meet the increasing requirements of car manufacturers and the law for lower emissions (Volatile Organic Compounds) in vehicle interiors. Following the process change at BASF’s Asian production sites at the beginning of 2017, the modification is now being made in Europe and will take place in the US plants this year.

Alongside isocyanate, polyol is the starting product for polyurethane foam systems. The emissions have been optimised by improving the cleaning and finishing processes of Lupranol in such a way that the mechanical properties of the material remain unchanged during the following foam and processing steps. This means that the currently used Lupranol grades can be exchanged immediately.

Completed parts made of BASF PU systems are tested internally as well as by certified test
laboratories like Imat-Uve and Institut Fresenius. The improvement of the emission values varies from part to part: An average reduction of 20 percent is possible, measured according to commonly accepted chamber test methods like VDA276 and BMW GS 97014-3, the company said.