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, 2014
Filed:
Jul. 26, 2012
Jean-luc Couturier, Lyons, FR;
Jean-luc Dubois, Millery, FR;
Jean-Luc Couturier, Lyons, FR;
Jean-Luc Dubois, Millery, FR;
Arkema France, Colombes, FR;
Abstract
A method for synthesizing ω-amino-alkanoic acids or the esters thereof from natural unsaturated fatty acids passing through an intermediate ω-unsaturated nitrile compound. The method is simple to implement and, relative to known methods, avoids the environmental constraints and economic disadvantages resulting from the reaction by-products. The method includes synthesizing an ω-amino acid (ester) of formula R3OOC—(CH2)q-CH2NH2, in which R3 is H or an n-butyl radical and q is an integral index of between 2 and 13, from a monounsaturated fatty acid (ester) of formula (R1-CH═CH—(CH2)p-COO)xR2, in which x represents 1, 2 or 3, R1 is H or a hydrocarbon radical comprising from 4 to 11 carbon atoms and, where appropriate, a hydroxyl function, R2 is H or an alkyl radical comprising from 2 to 4 carbon atoms, and may contain one or more heteroatoms, and p is an integral index of between 2 and 11, including a reaction step of ammoniation.