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:
May. 23, 2006
Filed:
Mar. 11, 2004
Applicants:
Carl Andrew Renner, Wilmington, DE (US);
Richard Frank Dubnansky, Beaumont, TX (US);
Freddison A. Parsons, Port Arthur, TX (US);
Richard T. Stimek, Beaumont, TX (US);
Zhihong Wu, Mobile, AL (US);
Inventors:
Carl Andrew Renner, Wilmington, DE (US);
Richard Frank Dubnansky, Beaumont, TX (US);
Freddison A. Parsons, Port Arthur, TX (US);
Richard T. Stimek, Beaumont, TX (US);
Zhihong Wu, Mobile, AL (US);
Assignee:
E. I. du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 209/86 (2006.01);
U.S. Cl.
CPC ...
Abstract
A process comprises contacting a product mixture with a base, optionally in the presence of a polyhydric alcohol, to produce a base-treated mixture and distilling the base-treated mixture in which the product mixture comprises an aromatic amine and a phenolic compound.