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. 05, 2019
Filed:
Mar. 15, 2016
Applicant:
Dsm Ip Assets B.v., Heerlen, NL;
Inventors:
Rinke Marcel Altink, Echt, NL;
Anna Maria Cornelia Francisca Castelijns, Echt, NL;
Assignee:
DSM IP ASSETS B.V., Heerlen, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 209/78 (2006.01); C07C 209/68 (2006.01);
U.S. Cl.
CPC ...
C07C 209/78 (2013.01); C07C 209/68 (2013.01);
Abstract
The present invention relates to a process for the preparation of diaminobutane from ornithine, comprising steps of: i. preparing a solution of (a) a salt of ornithine and an acid; and (b) an aldehyde or a ketone, or a mixture thereof; in (c) a solvent, wherein the solvent comprises a protic organic solvent or a dipolar aprotic organic solvent, or a mixture thereof and ii. heating the solution to a temperature above 100° C., thereby inducing decarboxylation of the ornithine and formation of diaminobutane.