GB1296347A - - Google Patents

Info

Publication number
GB1296347A
GB1296347A GB1296347DA GB1296347A GB 1296347 A GB1296347 A GB 1296347A GB 1296347D A GB1296347D A GB 1296347DA GB 1296347 A GB1296347 A GB 1296347A
Authority
GB
United Kingdom
Prior art keywords
methionine
hydrolysis
carbonate
feb
alkali metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Inventor
H Wagner
H Tanner
S-P Mannsfeld
A Pfeiffer
E A H Liebetanz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19691906405 external-priority patent/DE1906405C/en
Application filed by Degussa GmbH filed Critical Degussa GmbH
Publication of GB1296347A publication Critical patent/GB1296347A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D233/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
    • C07D233/54—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members
    • C07D233/66—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having two double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D233/72—Two oxygen atoms, e.g. hydantoin
    • C07D233/76—Two oxygen atoms, e.g. hydantoin with substituted hydrocarbon radicals attached to the third ring carbon atom

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1296347 Methionine DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT 9 Feb 1970 [8 Feb 1969] 6076/70 Heading C2C Methionine is prepared by hydrolysing 5 - (# - methylmercaptoethyl) - hydantoin at an elevated temperature and pressure with an aqueous solution of an alkali metal carbonate and/or bicarbonate whilst removing the ammonia and CO 2 formed during the hydrolysis and precipitating the methionine from the solution on completion of the hydrolysis by adding CO 2 , the mother liquor containing the alkali metal bicarbonate being recycled to the hydrolysis reaction. The hydrolysis is suitably carried out using an aqueous solution of potassium carbonate and/or potassium hydrogen carbonate. A portion of the mother liquor may be removed from the circuit either periodically or continuously, saturated with C0 2 , and a water - miscible solvent added thereto at low temperature to precipitate methionine and hydrogen carbonate.
GB1296347D 1969-02-08 1970-02-09 Expired GB1296347A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691906405 DE1906405C (en) 1969-02-08 Process for the preparation of Methio mn

Publications (1)

Publication Number Publication Date
GB1296347A true GB1296347A (en) 1972-11-15

Family

ID=5724731

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1296347D Expired GB1296347A (en) 1969-02-08 1970-02-09

Country Status (13)

Country Link
JP (1) JPS549174B1 (en)
AT (1) AT295489B (en)
BE (1) BE745432A (en)
CH (1) CH529118A (en)
FR (1) FR2032788A5 (en)
GB (1) GB1296347A (en)
HU (1) HU162233B (en)
IL (1) IL33840A (en)
IT (1) IT954084B (en)
NL (1) NL150435B (en)
RO (1) RO56492A (en)
SE (1) SE373842B (en)
SU (1) SU503509A3 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1760074A1 (en) * 2005-08-29 2007-03-07 Sumitomo Chemical Company, Limited Process for producing methionine
WO2008006977A1 (en) * 2006-07-11 2008-01-17 Adisseo France S.A.S. Process for preparing 2-hydroxy-4-(methylthio)butyronitrile and methionine
FR2903690A1 (en) * 2006-07-11 2008-01-18 Adisseo Ireland Ltd Making 2-hydroxy-4-(methylthio)butyronitrile aqueous solution from acrolein, useful to prepare methionine, comprises reacting acrolein with hydrocyanic acid and methylmercaptan
FR2951195A1 (en) * 2009-10-14 2011-04-15 Roquette Freres COMPOSITION RICH IN METHIONINE FOR ANIMAL FEEDING
US20180111899A1 (en) * 2015-04-21 2018-04-26 Adisseo France S.A.S. Method for making methionine
CN116535338A (en) * 2023-04-25 2023-08-04 重庆渝化新材料有限责任公司 Potassium salt recycling process in production process of D, L-methionine
CN116675631A (en) * 2023-06-07 2023-09-01 重庆渝化新材料有限责任公司 Cyclic production method of D, L-methionine

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60344B2 (en) * 1979-01-25 1985-01-07 住友化学工業株式会社 Method for recovering active ingredients from methionine synthesis exhaust gas
DE19846825A1 (en) † 1998-10-10 2000-04-13 Degussa Free-flowing moldings containing methionine and process for their production
JP2009292796A (en) 2008-06-09 2009-12-17 Sumitomo Chemical Co Ltd Method for producing methionine
JP5307512B2 (en) 2008-11-07 2013-10-02 住友化学株式会社 Method for producing methionine
JP2010111640A (en) 2008-11-07 2010-05-20 Sumitomo Chemical Co Ltd Method for producing methionine

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1760074A1 (en) * 2005-08-29 2007-03-07 Sumitomo Chemical Company, Limited Process for producing methionine
WO2008006977A1 (en) * 2006-07-11 2008-01-17 Adisseo France S.A.S. Process for preparing 2-hydroxy-4-(methylthio)butyronitrile and methionine
FR2903690A1 (en) * 2006-07-11 2008-01-18 Adisseo Ireland Ltd Making 2-hydroxy-4-(methylthio)butyronitrile aqueous solution from acrolein, useful to prepare methionine, comprises reacting acrolein with hydrocyanic acid and methylmercaptan
US10440974B2 (en) 2009-10-14 2019-10-15 Evonik Degussa Gmbh Methionine-rich composition for feeding animals
WO2011045377A1 (en) * 2009-10-14 2011-04-21 Roquette Freres Methionine-rich composition for feeding animals
FR2951195A1 (en) * 2009-10-14 2011-04-15 Roquette Freres COMPOSITION RICH IN METHIONINE FOR ANIMAL FEEDING
US20180111899A1 (en) * 2015-04-21 2018-04-26 Adisseo France S.A.S. Method for making methionine
US10494335B2 (en) * 2015-04-21 2019-12-03 Adisseo France S.A.S. Method for making methionine
TWI686379B (en) * 2015-04-21 2020-03-01 法商艾迪索法國股份有限公司 Methionine manufacturing process
CN116535338A (en) * 2023-04-25 2023-08-04 重庆渝化新材料有限责任公司 Potassium salt recycling process in production process of D, L-methionine
CN116535338B (en) * 2023-04-25 2023-11-03 重庆渝化新材料有限责任公司 Potassium salt recycling process in production process of D, L-methionine
CN116675631A (en) * 2023-06-07 2023-09-01 重庆渝化新材料有限责任公司 Cyclic production method of D, L-methionine
CN116675631B (en) * 2023-06-07 2023-12-12 重庆渝化新材料有限责任公司 Cyclic production method of D, L-methionine

Also Published As

Publication number Publication date
NL150435B (en) 1976-08-16
JPS549174B1 (en) 1979-04-21
FR2032788A5 (en) 1970-11-27
AT295489B (en) 1972-01-10
IL33840A (en) 1973-08-29
NL7001725A (en) 1970-08-11
IL33840A0 (en) 1970-04-20
DE1906405A1 (en) 1970-12-03
SE373842B (en) 1975-02-17
HU162233B (en) 1973-01-29
RO56492A (en) 1975-06-15
SU503509A3 (en) 1976-02-15
IT954084B (en) 1973-08-30
BE745432A (en) 1970-07-16
CH529118A (en) 1972-10-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years