WO2001060790 PROCESS FOR THE PRODUCTION OF METHIONINE

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Publication Number WO/2001/060790

Publication Date 23.08.2001

International Application No. PCT/EP2001/002261

International Filing Date 14.02.2001

Chapter 2 Demand Filed 31.05.2001

IPC

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CPC

Applicants

AVENTIS ANIMAL NUTRITION S.A. [FR]/[FR]

Inventors

PONCEBLANC, Hervé
ROSSI, Jean-Christophe
LAVAL, Philippe
GROS, Georges

Agents

MERIGEAULT, Shona

Priority Data

PCT/EP00/01528		15.02.2000		EP
PCT/EP00/01529		15.02.2000		EP

Publication Language English (en)

Filing Language English (EN)

Designated States

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Title

(EN) PROCESS FOR THE PRODUCTION OF METHIONINE

(FR) PROCEDE DE PRODUCTION DE METHIONINE

Abstract

(EN) A process for the production of methionine which comprises (a) hydrolysing the methionine amide in the presence of a catalyst comprising titanium to produce ammonium methioninate, said catalyst having a porosity of from 5 to 1000 nm, a total pore volume of from 0.2 to 0.55 cm³/g and a surface area of from 30 to 150 m²/g, and (b) a second step of recuperating methionine from the ammonium methioninate salt by removing ammonia. Also claimed is an industrial process for the production of methionine incorporating the aforementioned hydrolysis.

(FR) L'invention concerne un procédé de production de méthionine qui consiste (a) à hydrolyser l'amide de méthionine en présence d'un catalyseur contenant du titane afin de produire du méthioninate d'ammonium, ledit catalyseur présentant une porosité comprise entre 5 et 1000 nm, un volume poreux total compris entre 0,2 et 0,55 cm³/g et une aire de surface comprise entre 30 et 150 m²/g, et (b) à récupérer la méthionine comprise dans le méthioninate d'ammonium en éliminant l'ammoniac. L'invention concerne également un procédé industriel de production de méthionine incorporant ladite hydrolyse.

C	CHEMISTRY; METALLURGY
07	ORGANIC CHEMISTRY
C	ACYCLIC OR CARBOCYCLIC COMPOUNDS
319	Preparation of thiols, sulfides, hydropolysulfides or polysulfides
14	of sulfides
20	by reactions not involving the formation of sulfide groups

C	CHEMISTRY; METALLURGY
07	ORGANIC CHEMISTRY
C	ACYCLIC OR CARBOCYCLIC COMPOUNDS
323	Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
50	containing thio groups and carboxyl groups bound to the same carbon skeleton
51	having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton
52	the carbon skeleton being acyclic and saturated

C	CHEMISTRY; METALLURGY
07	ORGANIC CHEMISTRY
C	ACYCLIC OR CARBOCYCLIC COMPOUNDS
323	Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
50	containing thio groups and carboxyl groups bound to the same carbon skeleton
51	having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton
57	the carbon skeleton being further substituted by nitrogen atoms, not being part of nitro or nitroso groups
58	with amino groups bound to the carbon skeleton

C	CHEMISTRY; METALLURGY
07	ORGANIC CHEMISTRY
C	ACYCLIC OR CARBOCYCLIC COMPOUNDS
323	Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
50	containing thio groups and carboxyl groups bound to the same carbon skeleton
51	having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton
60	with the carbon atom of at least one of the carboxyl groups bound to nitrogen atoms

C	CHEMISTRY; METALLURGY
07	ORGANIC CHEMISTRY
C	ACYCLIC OR CARBOCYCLIC COMPOUNDS
319	Preparation of thiols, sulfides, hydropolysulfides or polysulfides
14	of sulfides
20	by reactions not involving the formation of sulfide groups

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1. WO2001060790 - PROCESS FOR THE PRODUCTION OF METHIONINE