MUMBAI, India, Aug. 10 -- Intellectual Property India has published a patent application (202647091420 A) filed by Lyondell Chemical Technology, L. P. on July 28, 2026, for Process For Production Of Propylene Oxide And Styrene Monomer.
Inventors include Rufener, Karl P.; Kongkitisupchai, Sunti; Petry, Kimberly A.; and Dearth, Anthony S..
The application for the patent was published on July 31, 2026, under issue no. 31/2026.
Abstract: Disclosed is the use of a dividing-wall column in a process for co-producing propylene oxide and styrene monomer. Feed streams to a dividing-wall column comprise a bottoms product produced in recovering crude propylene oxide from an epoxidation reaction product, a hydrogenated by product styrene monomer production, and a light fraction of a bottoms product withdrawn from the dividing-wall column. Products from the dividing-wall column comprise an overhead product compnsing ethylbenzene for recycle to an oxidation zone, an intermediate product comprising methylbenzyl alcohol and acetophenone as feed to a dehydration zone to produce styrene monomer, and a bottoms product comprising methylbenzyl alcohol and heavy materials.
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