Japanese petrochemical producer Mitsui Chemical plans to stop purified terephthalic acid (PTA) production permanently in Japan from August 2023 by closing the 400,000 t/yr production line at its Iwakuni Ohtake petrochemical complex in Japan's southern Yamaguchi prefecture.
With this closure, fellow petrochemical producer Toray's 280,000t/yr production line at Aichi will be the last PTA unit in Japan. Massive expansion of PTA capacities from the early 2000s in northeast Asia, particularly in China, has led to increased market competition and squeezed production margins. Japanese polyester production has also been falling in recent years, contracting domestic PTA demand.
Mitsui Chemical began its PTA production in 1958 and used to be the largest Japanese producer with a total capacity of 750,000 t/yr in the early 2000s. But squeezed PTA production margins led to rationalisation measures that started in 2008. This included the shutdowns of two PTA production lines in 2008 and 2013, respectively, with a total capacity of 350,000 t/yr at the Iwakuni-Ohtake complex, and stake sales at Mitsui Chemical's joint-ventured PTA production lines in Indonesia and Thailand in 2014 and 2018.
After the shutdown of this 400,000 t/yr line, Mitsui Chemical will only hold a 26pc stake at GC-M PTA, the joint venture of Mitsui Chemical and Thailand's PTTGC. PTTGC holds the remaining 74pc stake. GC-M PTA owns three production lines with a total capacity of 1.45mn t/yr at Map Ta Phut in Thailand.