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:
Nov. 14, 2006
Filed:
Nov. 05, 2002
Eit Drent, Amsterdam, NL;
Roelof Van Ginkel, Amsterdam, NL;
Renata Helena Van Der Made, Amsterdam, NL;
Eit Drent, Amsterdam, NL;
Roelof Van Ginkel, Amsterdam, NL;
Renata Helena Van Der Made, Amsterdam, NL;
Shell Oil Company, Houston, TX (US);
Abstract
Bidentate ligand of formula (I), RRM-R-MRRwherein Mand Meach indenpendently represent P, As or Sb; R, R, Rand Reach independently represent the same or a different optionally substituted organic group and at least one of R, R, Rand Rcontains a tertiary carbon atom through which the group is linked to Mor M; and R represents a bridging group based on a trimethylene group connecting Mand Mof which the middle carbon atom is double bonded to a non-metal element chosen from group 14, 15 or 16 of the periodic table of elements. Catalyst comprising this bidentate ligand and carbonylation process n which this catalyst is used.