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:
Jan. 11, 2022
Filed:
Jan. 31, 2020
Exxonmobil Research and Engineering Company, Annandale, NJ (US);
Eugine Choi, Flemington, NJ (US);
Matthew W. Boland, Pittsburgh, PA (US);
Zhisheng Gao, Flemington, NJ (US);
Luca Salvi, Haddonfield, NJ (US);
Shamel Merchant, Bridgewater, NJ (US);
Bruce W. Crawley, Oxfordshire, GB;
EXXONMOBIL RESEARCH AND ENGINEERING COMPANY, Annandale, NJ (US);
Abstract
Naphtha boiling range compositions are provided that can have improved combustion properties (relative to the research octane number of the composition) in spark ignition engines and/or compression ignition engines. The improved combustion properties can be achieved by controlling the total combined amounts of n-paraffins and isoparaffins that include a straight-chain propyl group (R—CH—CH—CH—R). For such a straight-chain propyl group, Rcan correspond to any convenient CHgroup that can appear in a paraffin or isoparaffin. Rcan correspond to a hydrogen atom, making the straight-chain propyl group a terminal n-propyl group; or Rcan correspond to any convenient CHgroup that can appear in a paraffin or isoparaffin.