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:
Dec. 29, 2015
Filed:
Oct. 15, 2012
Applicant:
Invista North America S.a R.l., Wilmington, DE (US);
Inventors:
Stewart Forsyth, Wilmington, DE (US);
John Arthur Turner, Cleveland, GB;
Keith Whiston, Darlington, GB;
Thomas E Vos, Beaumont, TX (US);
Assignee:
INVISTA North America S.a.r.l., Wilmington, DE (US);
Primary Examiner:
Int. Cl.
CPC ...
C07F 9/144 (2006.01); C07F 9/145 (2006.01); C07F 9/146 (2006.01); C07F 9/6574 (2006.01);
U.S. Cl.
CPC ...
C07F 9/144 (2013.01); C07F 9/145 (2013.01); C07F 9/146 (2013.01); C07F 9/65744 (2013.01);
Abstract
Claimed is a process for producing a phosphorus-containing ligand, preferably a diphosphite ligand structure (DLS) such as structure I. The method includes contacting a phosphorochloridite (structure II) with a compound having the structure X—OH (which can be a bisaryl compound), and a tertiary organic amine to provide structure I' and as preferred embodiment structure I.