Title:
PRODUCTION OF METHIONINE AND ITS SALT
Document Type and Number:
Japanese Patent JPH09176111
Kind Code:
A
Abstract:
To obtain methionine and its salt low in discoloration, excellent in storage stability with a by-product as small an amount as possible by a large- scale apparatus by a continuous operation.
3-Methylmercaptopropionaldehyde, hydrogen cyanide, ammonia and carbon dioxide or components capable of producing these components are converted optionally in the presence of water into 5-(2-methylmercaptoethyl)- hydantoin and further converted into methionine or a methionine salt to give methionine as the objective compound. The conversion is preferably carried out at ≥80°C under ≥10bar. The conversion of the components is preferably performed through at least one premixture.
Inventors:
FURIITOHERUMU GAIGAA
BAUDOUIN HARUSUBERUGE
HANSUUYOAHIMU HATSUSERUBATSUHA
KURAUSU HENCHIERU
KURAUSU FUUTOMATSUHAA
MARUTEIN KERUFUAA
SUBUENNPEETAA MANSUFUERUTO
HERUBERUTO TANAA
FUERUDEINANTO TAISEN
JIYOSE BUANROBEISU
KURAUSU BUIRIGEROTSUTO
BAUDOUIN HARUSUBERUGE
HANSUUYOAHIMU HATSUSERUBATSUHA
KURAUSU HENCHIERU
KURAUSU FUUTOMATSUHAA
MARUTEIN KERUFUAA
SUBUENNPEETAA MANSUFUERUTO
HERUBERUTO TANAA
FUERUDEINANTO TAISEN
JIYOSE BUANROBEISU
KURAUSU BUIRIGEROTSUTO
Application Number:
JP33416996A
Publication Date:
July 08, 1997
Filing Date:
December 13, 1996
Export Citation:
Assignee:
DEGUSSA
International Classes:
C07C319/20; C07C319/28; C07C323/58; C07D233/76; (IPC1-7): C07C323/58; C07C319/20
Attorney, Agent or Firm:
Toshio Yano (2 outside)