"shortage of petrochemicals"
This statement took me a bit by surprise, because the oil price was low last year and has barely recouped. I suspected that perhaps because the demand for gasoline dropped, the refineries had reduced their production which in turn affected other areas.
But according to https://www.wsj.com/articles/one-week-texas-freeze-seen-triggering-monthslong-plastics-shortage-11615973401 the shortage in chemicals is due to the Texas freeze.
The February freeze that triggered mass blackouts in Texas led to chemical plant shutdowns that are disrupting global supply chains, causing a shortage of the raw materials needed for everything from medical face shields to smartphones.
Hopefully this is a short-lived shortage.