The third quarter opens with the petrochemical complex in full retreat. After a volatile first half dominated by Middle East tension, crude oil has broken sharply lower — and PVC, polyethylene, polypropylene and polyurethane feedstocks are all following it down. Here's the picture, and what it means if you're buying.
Crude: the Q3 starting point
Brent crude is trading in the low-to-mid $70s and WTI near $69, after Q2 posted roughly a 30% decline — the steepest quarterly fall since 2020. The driver is supply, not demand: tanker traffic through the Strait of Hormuz has resumed, sanction waivers have released additional barrels, and analysts are now warning of a building supply glut into the second half as exports rebound faster than expected. In short, the war-risk premium that inflated prices earlier in the year is unwinding.
What it means for polyurethane
Through Q2, Middle East isocyanate buyers faced crisis conditions — MDI allocations, 24-to-48-hour spot quotes, and emergency freight surcharges. With shipping normalising and feedstock falling, that premium is bleeding out and relief is reaching PU buyers. Layered on top is new MDI capacity coming online, which keeps the medium-term picture soft. For buyers of MDI, TDI and polyols, the cost floor is dropping.
What it means for PVC & polyolefins
The correction has shown up clearly in Asia: Chinese benchmark polyethylene fell around 11% and polypropylene around 15% month-on-month into late June, on weak downstream demand and ample supply. PVC export offers are correcting in step. Indian producers nudged local PP up modestly, but with global feedstock collapsing, further corrections look likely.
How feedstock flows into your prices
It helps to understand why polymer prices track crude. Oil is refined to naphtha; naphtha is cracked to ethylene and propylene; those monomers polymerise into PE and PP, and feed the chains that make PVC and polyurethane intermediates. When crude moves, naphtha follows within about a week, and resin offers re-price shortly after — though the timing and size of the move vary by product and by how tight each link in the chain is. That lag is exactly what a buyer can use.
The buyer's playbook
The correction many buyers were waiting for has landed, opening a genuine buyer's window across vinyls, polyolefins and PU feedstocks. But two forces are in play at once — a building supply glut pushing prices down, and live geopolitics that could snap them back up. The disciplined response is layered buying: cover part of your near-term need now to lock in the softness, and stagger the balance so you're not exposed if the market turns. Chasing the exact bottom rarely pays; capturing most of the move with managed risk does.
Bottom line
Crude has broken, the war premium is unwinding, and PVC, PE, PP and PU feedstocks are all easing into Q3 — a real opportunity for buyers who plan rather than react. Keep an eye on the geopolitical headlines and the pace of any supply glut, and buy in layers.
Market snapshot compiled from public industry sources for information only, not trading advice. Figures reflect the market around the start of July 2026 and will move — follow Ambizent for the next Market Pulse.
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