DowDuPont Inc.’s first-quarter profit dropped with lower net sales and higher expenses related to spinoff companies, the Wall Street Journal reported. CEO Ed Breen blamed bad weather, slowdowns in the auto and smartphone markets, and lower margins. The company’s earnings results included the materials science business, which recently was spun off. The company plans to separate its agriculture and specialty materials businesses by June. DowDuPont’s total profit was $520 million, down 53% from the first quarter last year. Profit was 23 cents a share, down from 47 cents a share. Adjusted earnings were 84 cents a share, in line with analysts’ projections, but down from $1.12 a share.