The U.S. Methylene Diphenyl Diisocyanate (MDI) market moved higher throughout June, supported by supply disruptions, maintenance shutdowns, and resilient downstream demand. MDI prices strengthened as maintenance at Huntsman's Geismar facility, Covestro's force majeure, and BASF's planned turnaround reduced domestic availability and tightened spot supplies, while limited imports further supported the MDI market. In the week ending June 28, the MDI DEL Texas grade recorded a 1.54% increase, reflecting persistent supply tightness and healthy buying interest. Demand for MDI remained healthy across insulation, spray-foam, rigid polyurethane foam, coatings, and automotive applications, with buyers actively replenishing inventories ahead of anticipated supply constraints. Improved automotive and electronics production also contributed to steady MDI consumption, although weaker activity in parts of the chemicals, plastics, and rubber sectors moderated overall demand growth. Firm aniline prices and occasional strength in benzene increased production costs, enabling producers to maintain higher offers for MDI. Looking ahead, ongoing maintenance, restricted supply, resilient construction activity, and steady polyurethane demand are expected to keep the MDI market firm, although improved production rates or easing feedstock costs could moderate future price increases.
The MDI market in the United States recorded a strong upward trend throughout June, supported by supply disruptions, firm downstream consumption, and improving buyer confidence. MDI prices strengthened steadily during the month as maintenance outages tightened product availability and encouraged buyers to secure material in advance. By the final week of June, the MDI DEL Texas grade recorded a 1.54% increase in the week ending June 28, reflecting continued supply constraints, healthy purchasing activity across major downstream sectors, and sustained bullish market sentiment.
Demand for MDI remained broadly supportive despite mixed industrial performance. The construction sector continued to drive consumption, with insulation and spray-foam manufacturers actively replenishing inventories ahead of anticipated shortages. Strong buying from rigid polyurethane foam producers also supported MDI demand. Meanwhile, automotive manufacturing improved during the month, boosting polyurethane applications used in vehicle interiors and components. Production of electrical equipment and electronics also expanded, providing additional support for MDI consumption in coatings and insulation materials. However, softer activity across parts of the plastics, chemicals, and rubber industries prevented demand from accelerating more aggressively, keeping overall purchasing balanced.
Supply conditions remained the primary factor influencing MDI pricing. Several planned and unplanned production disruptions significantly reduced spot market availability during June. Maintenance work at Huntsman's Geismar facility, the force majeure declared by Covestro following an upstream production issue, and BASF's scheduled maintenance preparations collectively tightened domestic supply. At the same time, limited import arrivals prevented buyers from offsetting reduced domestic availability, resulting in a tighter MDI market. Producers maintained firm pricing strategies as inventories remained constrained and buyers continued restocking activity.
Feedstock costs also contributed to the bullish sentiment. Firm aniline prices during mid-June, along with occasional strength in benzene values, increased production costs and supported higher offers for MDI. Rising raw material expenses reinforced supplier confidence, while steady downstream demand enabled producers to successfully implement price increases across the market.
Weekly pricing reflected a consistent upward trajectory rather than short-term volatility. After relatively stable conditions in early June, MDI prices advanced sharply during the middle of the month as supply disruptions became more evident. In the week ending June 28, the MDI DEL Texas grade increased by 1.54%, highlighting the continued impact of tight spot availability, producer pricing discipline, and sustained buyer restocking. The weekly gain confirmed that market fundamentals remained supportive, with buyers continuing to build inventories to protect against further supply shortages and maintain procurement flexibility.
Looking ahead, the near-term outlook for MDI remains positive. Ongoing maintenance activities, limited spot availability, constrained imports, and resilient demand from insulation, construction, automotive, and polyurethane manufacturers are expected to keep the market firm. While any decline in feedstock costs or improved production rates could moderate future gains, current fundamentals indicate that MDI prices are likely to remain supported in the coming weeks.
