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:
Feb. 04, 2014
Filed:
Aug. 27, 2010
David Richard Corbin, West Chester, PA (US);
Joachim C. Ritter, Wilmington, DE (US);
James A. Schultz, Swedesboro, NJ (US);
Sourav Kumar Sengupta, Wilmington, DE (US);
Katelyn Rae Walck, West Chester, PA (US);
David Richard Corbin, West Chester, PA (US);
Joachim C. Ritter, Wilmington, DE (US);
James A. Schultz, Swedesboro, NJ (US);
Sourav Kumar Sengupta, Wilmington, DE (US);
Katelyn Rae Walck, West Chester, PA (US);
E I du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
Aromatic compounds such as o-xylene are selectively nitrated by nitric acid in the presence of polyphosphoric acid and a large pore, acidic zeolite or a large pore, hydrophobic molecular sieve. This is an environmentally friendly, commercially viable, high conversion process for the selective nitration of aromatic compounds in the para position.