Operating EBIT in the division fell by 46.1% to $104m in the quarter. This compares with $193m in the equivalent period in 2019.
The falls were attributed to reduced demand in North America's automotive, industrial and energy markets. Prices also declined. However, compared with the previous quarter, sales improved by 27% as demand for consumer durables, construction and the automotive industry improved, Dow said.
In the polyurethanes segment, Dow said demand in furniture & bedding and domestic appliances was higher than in Q3 2019. 'The business delivered double-digit volume growth overall,' it said.
Looking across the company, Dow Chemical generated sales of $9.7bn in the third quarter of 2020 down 9.8% on the same period last year.
Operating EBIT across the business fell 31.9% to $761m in the quarter.
CEO Jim Fitterling said: 'We enter the fourth quarter with sequential momentum, improved financial flexibility and focus on cash, which will benefit us as the gradually recovery strengthen and broadens.'