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. 26, 2015
Filed:
Oct. 04, 2012
Invista North America S.a.r.l., Wilmington, DE (US);
Sudhir Aki, Houston, TX (US);
Wyatte E. Allen, Orange, TX (US);
Mark Anstrom, Beaumont, TX (US);
Charles Nelson Campbell, II, Beaumont, TX (US);
Tseng Chao, Beaumont, TX (US);
James E. McIntosh, Beaumont, TX (US);
Larry E. Moerbe, Orange, TX (US);
Bruce Edwin Murphree, Beaumont, TX (US);
Mark D. Rogers, Port Arthur, TX (US);
William J. Tenn, III, Beaumont, TX (US);
Thomas E. Vos, Beaumont, TX (US);
Michael W. Wensing, Baytown, TX (US);
INVISTA North America S.a.r.l., Wilmington, DE (US);
Abstract
The present invention relates to a process for hydrocyanating 3-pentenenitrile. The process can include feeding 3-pentenenitrile and HCN to a hydrocyanation reaction zone that includes a Lewis acid promoter, nickel, and a phosphorus-containing ligand. In various embodiments, the process can also include controlling water concentration within the hydrocyanation reaction zone sufficient to maintain a high activity of the ligand catalyst complex while recycling at least a portion of the ligand catalyst complex.