ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,327, issued on July 28, was assigned to ExxonMobil Chemical Patents Inc. (Baytown, Texas).
"Metallocene catalysts for producing vinyl-terminated polyalphaolefins and methods associated therewith" was invented by Jian Yang (Houston), Hua Zhou (Missouri City, Texas), Jo Ann M. Canich (Houston) and Jennifer L. Rapp (Houston).
According to the abstract* released by the U.S. Patent & Trademark Office: "This invention relates to a method comprising contacting C3-C32 alpha olefin with catalyst system comprising activator and catalyst of the formula wherein: M is Hf or Zr; T is a bridging group; each X is independently a leaving group; R1 and R2 are independently hydrogen, or a Ci-Gto op...