Is polyester's crude-led rally sustainable amid weak demand?

Global polyester feedstock markets firmed in the first week of September 2026 as US-Iran tensions lifted crude oil, PTA and MEG.
PTA rose across major routes, with CFR India up 1.6 per cent and CFR Southeast Asia up 2.8 per cent between August 31 and September 4.
MEG gains were sharper, led by domestic China up 13.5 per cent, but weak downstream demand left polyester makers nursing wider losses.