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:
Oct. 28, 2003
Filed:
Oct. 11, 2002
Applicant:
Inventors:
Bonnie G. McKinnie, Magnolia, AR (US);
J. Todd Aplin, Baton Rouge, LA (US);
Robert U. Lyons, Magnolia, AR (US);
Clinton R. Parham, Magnolia, AR (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C / ; C07C 5/27 ;
U.S. Cl.
CPC ...
C07C / ; C07C 5/27 ;
Abstract
Process technology for selectively isomerizing vinylidene olefin to tri-substituted olefin is described. The vinylidene olefin, normally in admixture with other types of olefins, especially linear 1-olefins, is treated with anhydrous hydrogen bromide under anhydrous conditions and in the absence of molecular oxygen and free radical initiator. The contacting period, which can be a matter of minutes, is sufficient to selectively isomerize the vinylidene olefin to tri-substituted olefin. If the process is conducted properly, little if any hydrobromination occurs.