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. 07, 2017
Filed:
Dec. 05, 2013
Applicant:
Invista North America S.a R.l., Wilmington, DE (US);
Inventors:
Sudhir N. V. K. Aki, Katy, TX (US);
William J. Tenn, III, Beaumont, TX (US);
Thomas E. Vos, Beaumont, TX (US);
Assignee:
INVISTA NORTH AMERICA S.A.R.L., Wilmington, DE (US);
Primary Examiner:
Int. Cl.
CPC ...
C07C 253/30 (2006.01);
U.S. Cl.
CPC ...
C07C 253/30 (2013.01); C07C 253/30 (2013.01); C07C 255/07 (2013.01);
Abstract
Pentenenitrile oligomers formed in a process for isomerizing cis-2-pentenenitrile to 3-pentenenitrile are minimized in the presence of an aluminum oxide catalyst. The process comprises providing an aluminum oxide catalyst having an alkali metal and/or alkaline earth metal and/or iron content, measured in the form of alkali metal oxide and/or alkaline earth metal oxide and/or iron oxide, respectively of less than 5000 ppm by weight.