Average operating rates of Japan's naphtha-fed ethylene crackers fell to 67.3pc in April, reaching a record low for the second consecutive month, according to the Japan Petrochemical Industry Association (JPCA).
Persistent naphtha supply disruption due to the US-Iran war in the Middle East, along with multiple planned turnarounds of the crackers, have pressured operating rates. The April operating rates dropped by 11.3 percentage points from the same month in 2025, and by 1.5 percentage points from March, when rates hit a record low of 68.8pc. Four crackers were shut for regular maintenance in April, compared to none a year earlier.
Ethylene output in April declined by 37pc on the year to 283,500t but rose by 4pc from March.
Production of major polymers — low-density polyethylene (LDPE) and polypropylene (PP) — also fell by 27pc to 79,100t and by 24pc to 146,400t, respectively, from a year earlier. Polyvinyl chloride (PVC) output dropped by 24pc on the year to 93,200t.
But production of LDPE, PP, and PVC in April recovered from March levels, as domestic petrochemical producers have attempted to diversify feedstock naphtha import sources beyond the Middle East, according to JPCA. LDPE and PP output rose by 47pc and 17pc in April on the month, while PVC production increased by 4.3pc on the month.
JPCA expects naphtha purchases from countries outside the Middle East to rapidly increase in May. Meanwhile, Japan has secured polyethylene and PP inventories that could cover domestic demand for more than three months, and naphtha production at domestic refineries has helped ease the impact of supply disruptions, JPCA added.
Japan relies heavily on the Middle East for its naphtha supply. The country imported 583,609t of naphtha from the UAE, Kuwait, Qatar, and Bahrain in March, accounting for 73pc of total imports of 798,523t imports in March, according to the latest data from finance ministry.
