IT1257282B - Processo migliorato per la produzione di metilmetacrilato monomero da acetoncianidrina - Google Patents

Processo migliorato per la produzione di metilmetacrilato monomero da acetoncianidrina

Info

Publication number
IT1257282B
IT1257282B ITMI920602A ITMI920602A IT1257282B IT 1257282 B IT1257282 B IT 1257282B IT MI920602 A ITMI920602 A IT MI920602A IT MI920602 A ITMI920602 A IT MI920602A IT 1257282 B IT1257282 B IT 1257282B
Authority
IT
Italy
Prior art keywords
methyl methacrylate
carried out
acetoncyanidrine
production
improved process
Prior art date
Application number
ITMI920602A
Other languages
English (en)
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
Application filed filed Critical
Priority to ITMI920602A priority Critical patent/IT1257282B/it
Publication of ITMI920602A0 publication Critical patent/ITMI920602A0/it
Priority to ES93103810T priority patent/ES2093298T3/es
Priority to AT93103810T priority patent/ATE141253T1/de
Priority to DE69303950T priority patent/DE69303950T2/de
Priority to EP93103810A priority patent/EP0561264B1/en
Priority to NO930900A priority patent/NO179511C/no
Priority to FI931108A priority patent/FI106196B/fi
Publication of ITMI920602A1 publication Critical patent/ITMI920602A1/it
Application granted granted Critical
Publication of IT1257282B publication Critical patent/IT1257282B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/18—Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group
    • C07C67/22—Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group from nitriles
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/18—Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group
    • C07C67/20—Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group from amides or lactams
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/58—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment

Landscapes

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

Abstract

Processo per la purificazione di metilmetacrilato grezzo ottenuto per reazione di. acetoncianidrina con un eccesso di acido solforico concentrato per formare metacrilammide solfato, si effettua poi una reazione di trasposizione ad alte temperature per l'ottenimento del solfato di metacrilanimide; quindi si esegue l'esterificazione della metacrilammide in soluzione solforica mediante diluizione con acqua ed utilizzando metanolo in eccesso; lavaggio del metilmetacrilato grezzo, e successiva distillazione caratterizzato dal fatto che il lavaggio viene effettuato con ammoniaca diluita, o ammine, e almeno un agente ossidante ed operando in presenza di inibitori.
ITMI920602A 1992-03-16 1992-03-16 Processo migliorato per la produzione di metilmetacrilato monomero da acetoncianidrina IT1257282B (it)

Priority Applications (7)

Application Number Priority Date Filing Date Title
ITMI920602A IT1257282B (it) 1992-03-16 1992-03-16 Processo migliorato per la produzione di metilmetacrilato monomero da acetoncianidrina
ES93103810T ES2093298T3 (es) 1992-03-16 1993-03-10 Procedimiento de produccion del metacrilato de metilo monomero a partir de la cianhidrina de acetona.
AT93103810T ATE141253T1 (de) 1992-03-16 1993-03-10 Verfahren zum herstellen von methylmethacrylatmonomer aus acetoncyanhydrin
DE69303950T DE69303950T2 (de) 1992-03-16 1993-03-10 Verfahren zum Herstellen von Methylmethacrylatmonomer aus Acetoncyanhydrin
EP93103810A EP0561264B1 (en) 1992-03-16 1993-03-10 Improved process for the production of methylmethacrylate monomer from acetoncyanhydrin
NO930900A NO179511C (no) 1992-03-16 1993-03-11 Fremgangsmåte for rensing av urent metylmetakrylat dannet fra acetoncyanhydrin
FI931108A FI106196B (fi) 1992-03-16 1993-03-12 Menetelmä metyylimetakrylaattimonomeerin valmistamiseksi asetosyaanihydriinistä

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI920602A IT1257282B (it) 1992-03-16 1992-03-16 Processo migliorato per la produzione di metilmetacrilato monomero da acetoncianidrina

Publications (3)

Publication Number Publication Date
ITMI920602A0 ITMI920602A0 (it) 1992-03-16
ITMI920602A1 ITMI920602A1 (it) 1993-09-16
IT1257282B true IT1257282B (it) 1996-01-12

Family

ID=11362440

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI920602A IT1257282B (it) 1992-03-16 1992-03-16 Processo migliorato per la produzione di metilmetacrilato monomero da acetoncianidrina

Country Status (7)

Country Link
EP (1) EP0561264B1 (it)
AT (1) ATE141253T1 (it)
DE (1) DE69303950T2 (it)
ES (1) ES2093298T3 (it)
FI (1) FI106196B (it)
IT (1) IT1257282B (it)
NO (1) NO179511C (it)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19803658A1 (de) * 1998-01-30 1999-08-05 Basf Ag Verwendung von anionischen Flockungsmitteln bei der organisch-wässrigen Phasentrennung
DE102006058250A1 (de) * 2006-12-08 2008-06-12 Evonik Röhm Gmbh Integriertes Verfahren und Vorrichtung zur Herstellung von Methacrylsäureestern aus Aceton und Blausäure
DE102006058251A1 (de) * 2006-12-08 2008-06-12 Evonik Röhm Gmbh Verfahren und Vorrichtung zur Herstellung von Methacrylsäurealkylestern
JP5432852B2 (ja) * 2009-09-30 2014-03-05 ローム アンド ハース カンパニー メタクリル酸メチルの精製によって生じる流れから価値のある化合物を回収する方法
EP2635549B1 (en) * 2010-11-04 2017-03-15 Rohm and Haas Company A process for producing methyl methacrylate having reduced biacetyl content
EP3212604B1 (en) 2014-10-27 2020-11-25 Rohm and Haas Company Process for the production of methyl methacrylate with reduced fouling
BR112017007905B1 (pt) * 2014-10-27 2021-11-30 Rohm And Haas Company Processo para a produção de metil metacrilato
GB201704729D0 (en) 2017-03-24 2017-05-10 Lucite Int Uk Ltd Method of producing methyl methacrylate or methacrylic acid

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57156438A (en) * 1981-03-24 1982-09-27 Mitsui Toatsu Chem Inc Preparation of methyl methacrylate

Also Published As

Publication number Publication date
FI931108A0 (fi) 1993-03-12
EP0561264A2 (en) 1993-09-22
ATE141253T1 (de) 1996-08-15
NO179511B (no) 1996-07-15
DE69303950D1 (de) 1996-09-19
EP0561264A3 (en) 1993-10-20
ITMI920602A1 (it) 1993-09-16
EP0561264B1 (en) 1996-08-14
FI106196B (fi) 2000-12-15
ITMI920602A0 (it) 1992-03-16
NO179511C (no) 1996-10-23
NO930900L (no) 1993-09-17
ES2093298T3 (es) 1996-12-16
NO930900D0 (no) 1993-03-11
DE69303950T2 (de) 1997-02-27
FI931108A (fi) 1993-09-17

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Effective date: 19950322