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:
Sep. 07, 1999
Filed:
Nov. 18, 1998
Chunjie Zhang, Lake Charles, LA (US);
Buford T Pennington, Sulphur, LA (US);
Jeffrey W Baird, Lake Charles, LA (US);
Allen B Quakenbush, Lake Charles, LA (US);
Stephen L Goldstein, Glen Mills, PA (US);
Donald L Lickei, Waterbury, CT (US);
Peter J Whitman, Glen Mills, PA (US);
Arco Chemical Technology, L.P., Greenville, DE (US);
Abstract
A multi-step process for producing DNT employing a mononitration step in a single liquid phase at an elevated temperature using a carefully controlled amount of water, followed by a phase separation step prior to dinitration of the MNT present in the resulting organic phase. This process results in a DNT product with a desired isomer ratio of 2,4-DNT to 2,6-DNT and provide relatively fast nitration rates with less by-products.