US MDI Supply Squeeze Triggers Price Hikes

The US MDI market is entering another period of tightness in June. Recent reports show that Covestro’s MDI unit in Baytown, Texas, has been affected by force majeure, while Huntsman’s Geismar facility is undergoing maintenance during roughly the same period. Both events are concentrated around early June, from approximately June 1 to June 10.

This matters because North American MDI capacity is highly concentrated. A small number of producers control a large share of regional supply, which means that any disruption at a major facility can quickly be amplified across the market. For downstream buyers, the result is immediate pressure on availability, procurement costs, and contract negotiations.

This round of price increases is not an isolated event. Since late May, major MDI producers including BASF, Covestro, and Huntsman have reportedly issued price increase notices, with increases for several MDI products in North America ranging from about USD 0.22 to USD 0.35 per pound. For downstream sectors such as construction insulation, automotive seating, home appliances, adhesives, coatings, and elastomers, this means another round of cost pressure is likely to move through the polyurethane chain.

The more important signal is that this price movement is not being driven by a sudden surge in demand. Instead, it reflects the declining supply flexibility of the global MDI market. MDI is a high-barrier, capital-intensive product. New capacity requires long construction cycles, and existing capacity cannot be easily replaced when outages, maintenance, or feedstock disruptions occur.

North America is particularly sensitive to this type of disruption. The market is structurally concentrated, import substitution is limited, and many buyers are tied to long-term supply relationships. As a result, even a short-term disruption can have an outsized impact on spot prices and buyer sentiment.

For China and the broader Asian market, the direct short-term impact may be limited, but the price signal deserves close attention. If US prices continue to rise, some international cargoes may be redirected toward higher-priced regions, which could affect arbitrage opportunities and global trade flows. At the same time, if European and US supply remains tight, Chinese MDI exporters may gain some pricing leverage.

However, this does not mean the market is entering a full demand-driven upcycle. Global downstream demand remains cautious. Recovery in real estate, furniture, durable goods, and consumer-related applications is still uneven. If downstream buyers resist higher prices, the current increase may remain a short-term supply-driven spike rather than the beginning of a sustained rally.

Overall, the key word for the June MDI market is not “demand boom,” but “supply fragility.” Prices are rising even without a strong demand recovery, which shows that global MDI supply has entered a low-margin-for-error phase.

In the coming weeks, market participants should watch three factors closely: how quickly affected units return to normal operation, how firmly producers implement their price increases, and whether downstream buyers accept higher costs. If supply disruptions continue, MDI prices may remain firm. If downstream demand weakens further, the current rally could lose momentum quickly.