Occidental Petroleum’s chemical division sees lingering uncertainty in polyvinyl chloride and caustic soda demand in the first half of 2023, CEO Robert Peterson said Feb. 28. PVC producer OxyChem saw 2022 US PVC export demand jump 46% while domestic PVC demand fell nearly 7%, both from 2021, Peterson said during the company’s fourth-quarter 2022 earnings call. He said many buyers’…