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:
Jun. 07, 2005
Filed:
Nov. 18, 2002
John Frederick Knifton, Houston, TX (US);
Talmadge Gail James, Houston, TX (US);
Kevin Dale Allen, Prairieville, LA (US);
Paul Richard Weider, Houston, TX (US);
Joseph Broun Powell, Houston, TX (US);
Lynn Henry Slaugh, Houston, TX (US);
Timothy Williams, Houston, TX (US);
John Frederick Knifton, Houston, TX (US);
Talmadge Gail James, Houston, TX (US);
Kevin Dale Allen, Prairieville, LA (US);
Paul Richard Weider, Houston, TX (US);
Joseph Broun Powell, Houston, TX (US);
Lynn Henry Slaugh, Houston, TX (US);
Timothy Williams, Houston, TX (US);
Shell Oil Company, Houston, TX (US);
Abstract
Disclosed is a new catalyst composition comprising a bimetallic Co—Ru catalyst complexed with a N-heterocylcic ligand that is effective, economical, and provides improvements in oxidative stability in the one step synthesis of 1,3-propanediol (1,3-PDO) from ethylene oxide and synthesis gas. For example, cobalt-ruthenium-2,2'-bipyrimidine, 2,2′-dipyridyl, or 2,4,6-tripridyl-s-triazine catalyst precursors in cyclic ether solvents, such as 1,3-dioxolane, 1,4-dioxolane, 1,4-dioxane, and 2-ethyl-2-methyl-1,3-dioxolane, provide good yields of 1,3-PDO in a one step synthesis.