LyondellBasell Industries NV on Tuesday reported a worse-than-expected 31% slide in revenue, as its product prices remain under pressure. Still, the company was able to notch better-than-expected profit growth. The Dutch chemicals-and-polymer producer, which emerged from chapter 11 bankruptcy in 2010, provides compounds found in products ranging from electronics to construction materials and biofuels. Lyondell, with its U.S. headquarters in Houston, has benefited from lower natural gas prices that have led to lower key…