July 7, 2014

CAS databases provide millions of journal article references from more than 10,000 major scientific journals worldwide, patent and patent family references from 63 patent authorities around the world, and other reputable web sources.

The following patent record is from the CAplusSM database.


Patent Number: US 8722950
Title: A process for producing propylene and aromatics from butenes by metathesis and aromatization
Inventor(s): Van Hal, Japp W.; Stevenson, Scott A.; Allman, Jim; Sullivan, David L.; Conant, Travis
Patent Assignee(s): Saudi Basic Industries Corporation, Saudi Arabia
Source: PCT Int. Appl., 22pp.; Chemical Indexing Equivalent to 155:563442 (US) CODEN: PIXXD2
Language: English

The invention is for a process for producing propylene and hexene (along with ethylene, pentenes, product butenes, heptenes and octenes) by metathesis from butenes (iso-, 1- and cis and trans 2-) and pentenes and then aromatizing the hexenes (along with higher olefins, such as heptenes and octenes) to benzene (along with toluene, xylenes, ethylbenzene and styrene). Since the desired products of the metathesis reaction are propylene and hexene, the feed to the metathesis reaction has a molar ratio for 1-butene:2-butene which favors prodn. of propylene and 3-hexene with the concn. of hexenes and higher olefins in the metathesis product being up to 30 mol%.  An isomerization reactor may be used to obtain the desired molar ratio of 1-butene:2-butene for the feed compn. into the metathesis reactor. After the metathesis reaction, of hexene and higher olefins are sepd. for aromatization to benzene and other aroms.

Please note:  Abstracts and Titles for patent records in CAplus are routinely enhanced to better describe the claimed invention.


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