Title:
PROCESSES FOR PRODUCTION AND PURIFICATION OF NORMAL PROPYL BROMIDE
Document Type and Number:
WIPO Patent Application WO2006113307
Kind Code:
A8
Abstract:
A process for oxygen-initiated hydrobromination of propene to form a crude reaction mixture of 95 GC area % n-propyl bromide. The process includes feeding an oxygen-containing gas, propene and hydrogen bromide into a liquid phase mixture comprised of n-propyl bromide and hydrogen bromide. At least the oxygen-containing gas and the propene of the feed are fed subsurface to the liquid phase mixture and either (a) the oxygen-containing gas and the propene do not come together in the absence of hydrogen bromide or (b) the oxygen-containing gas and the propene come together only in a propene:oxygen molar ratio in the range of 145:1 to 180:1. Purification processes provide a propyl bromide product containing at least 99.7 GC area % n-propyl bromide. Also provided is a novel composition of enhanced thermal stability which comprises a mixture of n-propyl bromide and isopropyl bromide. The mixture has an n-propyl bromide content of at least 99.7 GC area %, and an isopropyl bromide content of no more than 0.05 GC area %. The mixture, if subjected to storage in a closed chemically inert container at 60°C for at least 480 hours, has an APHA color of 10 or less while the mixture is devoid of any added stabilizer component.
Inventors:
HARROD WILLIAM B (US)
MCKINNIE BONNIE G (US)
DADGAR ALIREZA M (US)
HALL TYSON J (US)
MCKINNIE BONNIE G (US)
DADGAR ALIREZA M (US)
HALL TYSON J (US)
Application Number:
PCT/US2006/013778
Publication Date:
February 07, 2008
Filing Date:
April 13, 2006
Export Citation:
Assignee:
ALBEMARLE CORP (US)
HARROD WILLIAM B (US)
MCKINNIE BONNIE G (US)
DADGAR ALIREZA M (US)
HALL TYSON J (US)
HARROD WILLIAM B (US)
MCKINNIE BONNIE G (US)
DADGAR ALIREZA M (US)
HALL TYSON J (US)
International Classes:
C07C19/075; C07C17/08; C07C17/383
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