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. 11, 2008
Filed:
Dec. 15, 2004
Karina Quetzaly Almeida Leñero, Amsterdam, NL;
Eit Drent, Amsterdam, NL;
Roelof Van Ginkel, Amsterdam, NL;
Robert Ian Pugh, Nottingham, GB;
Karina Quetzaly Almeida Leñero, Amsterdam, NL;
Eit Drent, Amsterdam, NL;
Roelof Van Ginkel, Amsterdam, NL;
Robert Ian Pugh, Nottingham, GB;
Shell Oil Company, Houston, TX (US);
Abstract
The invention provides a process of preparing glycolaldehyde by reacting formaldehyde with hydrogen and carbon monoxide in the presence of a catalyst composition which is based on, a) a source of rhodium, and b) a ligand of general formula RP—R(I), wherein Ris a bivalent radical that together with the phosphorous atom to which it is attached is an optionally substituted 2-phospha-tricyclo[3.3.1.1{3,7}]-decyl group, wherein from 1 to 5 of the carbon atoms has been replaced by a heteroatom, and wherein Ris a monovalent radical which is an optionally substituted hydrocarbyl group having from 1 to 40 carbon atoms; a catalyst composition of use in said process; and a process of preparing ethylene glycol from the glycolaldehyde thus prepared.