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:
Apr. 15, 2003
Filed:
Feb. 02, 2001
Roelof Van Ginkel, Amsterdam, NL;
Alexander Van Der Made, Amsterdam, NL;
Jan De With, Amsterdam, NL;
Wolf Eilenberg, late of Oegstgeest, NL;
SRI International, Menlo Park, CA (US);
Abstract
This invention relates to processes for making phosphorus compounds R P—X—PR , R P—M, R P—L and R P, and the novel cation R P (L)—X—P (L)R , where R represents an optionally substituted hydrocarbyl group, X represents a bridging group, L represents a leaving group and M represents an alkali metal atom. The invention relates further to a process for making a compound R P—L from a compound R—H via a new process for making the compound R—Li followed by its reaction with a compound Hal P—L. The compound R P—X—PR is a ligand suitable for making catalysts for copolymerizing carbon monoxide and a olefinically unsaturated compound.