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:
Dec. 03, 2013
Filed:
Jun. 20, 2012
Anna Maria Cornelia Francisca Castelijns, Echt, NL;
Michele Catherine Christianne Janssen, Echt, NL;
Henricus Wilhemus Leonardus Marie Vaessen, Echt, NL;
Anna Maria Cornelia Francisca Castelijns, Echt, NL;
Michele Catherine Christianne Janssen, Echt, NL;
Henricus Wilhemus Leonardus Marie Vaessen, Echt, NL;
DSM IP Assets B.V., Heerlen, NL;
Abstract
The invention provides a process for the preparation of valerolactone, said process comprising reacting levulinic acid with hydrogen by using a solid Ru catalyst, characterized in that the process is carried out in the presence of at least 0.08% (w/w) water relative to the amount of levulinic acid. Said process may be faster and more selective. This process advantageously allows the production of valerolactone from renewable sources. The valerolactone may be used in the preparation of methylpentenoate, adipic acid dimethylester, adipic acid, hexamethylenediamine, and polyamide 6,6 (all claimed).