Mitsui Chemicals reportedly plans US$8.2B acquisition of JSR in Japan chip materials push

Mitsui Chemicals is planning to acquire semiconductor materials maker JSR from state-backed Japan Investment (JIC) in a deal potentially worth more than JPY1.3 trillion (US$8.2 billion), which would rank as the largest acquisition in Japan's chemicals sector, according to reports by Nikkei Asia and Reuters on November 4, 2026.