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:
Mar. 31, 1998
Filed:
Feb. 13, 1992
Applicant:
Inventors:
Robert A Keppel, Chesterfield, MO (US);
Scott F Mitchell, St. Charles, MO (US);
Michael J Mummey, Foley, MO (US);
Assignee:
Huntsman Petrochemical Corporation, Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ;
U.S. Cl.
CPC ...
549259 ;
Abstract
An improved process for the manufacture of maleic anhydride by catalytic oxidation of n-butane in which the feed flow channel to the catalytic reactor contains an autoignition suppression agent containing acid sites or trivalent phosphorus as an ignition inhibiting component. The autoignition suppression agent may also be used in other gas/liquid containment envelopes for flammable mixtures of hydrocarbons and oxygen. A novel apparatus and method are disclosed for assessing the influence of system conditions on autoignition of hydrocarbon/oxygen mixtures.