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:
Jul. 12, 2016
Filed:
Nov. 20, 2012
Applicant:
Invista North America S.a R.l., Wilmington, DE (US);
Inventors:
William J. Tenn, III, Beaumont, TX (US);
Sudhir N. V. K. Aki, Houston, TX (US);
Thomas E. Vos, Beaumont, TX (US);
Tseng H. Chao, Beaumont, TX (US);
Assignee:
INVISTA North America S.a.r.l., Wilmington, DE (US);
Primary Examiner:
Int. Cl.
CPC ...
C07F 9/145 (2006.01); C07F 9/141 (2006.01); C07F 9/6574 (2006.01); B01D 11/04 (2006.01); B01J 31/40 (2006.01); B01J 31/18 (2006.01);
U.S. Cl.
CPC ...
C07F 9/65746 (2013.01); B01D 11/0426 (2013.01); B01D 11/0457 (2013.01); B01J 31/4053 (2013.01); C07F 9/141 (2013.01); C07F 9/145 (2013.01); B01J 31/185 (2013.01); B01J 2531/847 (2013.01);
Abstract
Disclosed herein are methods for recovering diphosphite-containing compounds from mixtures comprising organic mononitriles and organic dinitriles, using liquid-liquid extraction. Also disclosed are treatments to enhance extractability of the diphosphite-containing compounds.