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:
Mar. 09, 2010
Filed:
Sep. 14, 2007
Dirk Michiel Boele, Amsterdam, NL;
Henricus Petrus Bernardus Duijghuisen, Amsterdam, NL;
Eugene Marie Godfried Andre Van Kruchten, Amsterdam, NL;
Jan Herman Hendrik Meurs, Amsterdam, NL;
Dirk Michiel Boele, Amsterdam, NL;
Henricus Petrus Bernardus Duijghuisen, Amsterdam, NL;
Eugene Marie Godfried Andre Van Kruchten, Amsterdam, NL;
Jan Herman Hendrik Meurs, Amsterdam, NL;
Shell Oil Company, Houston, TX (US);
Abstract
A process for the preparation of an alkylene carbonate, said process comprising contacting the corresponding alkylene oxide with carbon dioxide in the presence of water and in the presence of a catalytic composition comprising an organic base neutralized with a hydrogen halide, wherein the organic base comprises a carbon-based compound comprising one or more nitrogen atoms with at least one free electron pair and/or one or more phosphorous atoms with at least one free electron pair and wherein the organic base has a pKgreater than 8.