The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 2018
Filed:
Nov. 27, 2012
Badger Licensing Llc, Boston, MA (US);
Brian Maerz, Chelmsford, MA (US);
Vijay Nanda, Houston, TX (US);
Maruti Bhandarkar, Kingwood, TX (US);
Matthew Vincent, Baytown, TX (US);
BADGER LICENSING LLC, Boston, MA (US);
Abstract
In a process for producing styrene, benzene is alkylated with ethylene to produce ethylbenzene and at least some of the ethylbenzene is dehydrogenated to produce styrene, together with benzene and toluene as by-products. At least part of the benzene by-product is passed through a bed of an adsorbent comprising at least one of an acidic clay, alumina, an acidic ion exchange resin and an acidic molecular sieve to remove basic nitrogenous impurities therefrom and produce a purified benzene by-product, which is then recycled to the alkylation step.