Tosoh Moves to Secure HDI Supply with Full Takeover of Nanyo Kasei

Japan’s Tosoh plans to acquire Asahi Kasei’s remaining 50% stake in Nanyo Kasei, taking full ownership of the HDI monomer producer. Announced on 13 October, the acquisition aims to strengthen raw-material supply for Tosoh’s HDI derivatives business, including its newly operational plant. HDI is used in high-performance coatings and polyurethane applications. The transaction is expected to close by March 2027.