US Patent Issued to SHELL USA on Aug. 5 for "Process for removing poly(propylene oxide) from propylene oxide by membrane separation" (Dutch Inventors)

ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,378,212, issued on Aug. 5, was assigned to SHELL USA INC. (Houston).

"Process for removing poly(propylene oxide) from propylene oxide by membrane separation" was invented by Johannes Leendert Willem Cornelis Den Boestert (Amsterdam) and Adrianus Robert Storm (Moerdijk, Netherlands).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a process for removing 5poly(propylene oxide) from propylene oxide, comprising: a) sending a stream comprising propylene oxide and poly(propylene oxide) to a filtration screen having openings with an average diameter of at most 50 micro metre; and b) sending the filtrate stream resulting from step a) to a m...