FR2398037A1 - METHOD FOR SEPARATING METHACRYLIC ACID FROM AN ESTERIFICATION MIXTURE - Google Patents

METHOD FOR SEPARATING METHACRYLIC ACID FROM AN ESTERIFICATION MIXTURE

Info

Publication number
FR2398037A1
FR2398037A1 FR7821746A FR7821746A FR2398037A1 FR 2398037 A1 FR2398037 A1 FR 2398037A1 FR 7821746 A FR7821746 A FR 7821746A FR 7821746 A FR7821746 A FR 7821746A FR 2398037 A1 FR2398037 A1 FR 2398037A1
Authority
FR
France
Prior art keywords
methacrylic acid
esterification mixture
methyl methacrylate
separating
separating methacrylic
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.)
Withdrawn
Application number
FR7821746A
Other languages
French (fr)
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.)
Mitsubishi Kasei Corp
Original Assignee
Mitsubishi Kasei Corp
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 JP8798977A external-priority patent/JPS5424812A/en
Priority claimed from JP8799177A external-priority patent/JPS5424814A/en
Priority claimed from JP8799077A external-priority patent/JPS5424813A/en
Application filed by Mitsubishi Kasei Corp filed Critical Mitsubishi Kasei Corp
Publication of FR2398037A1 publication Critical patent/FR2398037A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
    • C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
    • C07C51/46—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation by azeotropic distillation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

L'invention concerne un procédé de séparation d'acide méthacrylique d'un mélange d'estérification. Ce procédé est caractérisé en ce que l'on soumet un mélange comprenant de l'eau, du méthanol, de l'acide méthacrylique et du méthacrylate de méthyle à une distillation pour retirer en queue de distillation essentiellement la totalité de l'acide méthacrylique et pour distiller, en tête, essentiellement la totalité de l'eau, du méthanol et du méthacrylate de méthyle Application à l'obtention de méthacrylate de méthyle d'un degré de pureté élevé.The invention relates to a process for separating methacrylic acid from an esterification mixture. This process is characterized in that a mixture comprising water, methanol, methacrylic acid and methyl methacrylate is subjected to distillation to remove essentially all of the methacrylic acid at the bottom of the distillation and for distilling, at the top, essentially all of the water, methanol and methyl methacrylate. Application to obtaining methyl methacrylate of a high degree of purity.

FR7821746A 1977-07-22 1978-07-21 METHOD FOR SEPARATING METHACRYLIC ACID FROM AN ESTERIFICATION MIXTURE Withdrawn FR2398037A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP8798977A JPS5424812A (en) 1977-07-22 1977-07-22 Separation of methyl methacrylate
JP8799177A JPS5424814A (en) 1977-07-22 1977-07-22 Separation of methyl methacrylate
JP8799077A JPS5424813A (en) 1977-07-22 1977-07-22 Separation of methacrylic acid

Publications (1)

Publication Number Publication Date
FR2398037A1 true FR2398037A1 (en) 1979-02-16

Family

ID=27305652

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7821746A Withdrawn FR2398037A1 (en) 1977-07-22 1978-07-21 METHOD FOR SEPARATING METHACRYLIC ACID FROM AN ESTERIFICATION MIXTURE

Country Status (5)

Country Link
CS (1) CS214895B2 (en)
DE (1) DE2832202A1 (en)
FR (1) FR2398037A1 (en)
GB (1) GB2001315B (en)
NL (1) NL7807420A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3161884D1 (en) * 1980-06-20 1984-02-16 Asahi Chemical Ind Process for purifying methyl methacrylate
US4464229A (en) * 1981-07-09 1984-08-07 Nippon Shokubai Kagaku Kogyo Co. Ltd. Process for producing acrylic or methacrylic esters
US4554054A (en) * 1983-12-09 1985-11-19 Rohm And Haas Company Methacrylic acid separation
US4879412A (en) * 1985-03-14 1989-11-07 Mitsui Toatsu Chemicals, Inc. Purification process of methacrylic acid
US5435892A (en) * 1993-08-30 1995-07-25 Mitsubishi Rayon Co., Ltd. Process for separating methanol and methyl acrylate or methyl methacrylate
US6084127A (en) * 1997-02-28 2000-07-04 Nippon Shokubai Co Ltd Method for recovering acrylic acid

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1579107A (en) * 1967-07-11 1969-08-22
FR2002126A1 (en) * 1968-02-17 1969-10-03 Knapsack Ag
FR2202876A1 (en) * 1972-10-10 1974-05-10 Nippon Catalytic Chem Ind Acrylic or methacrylic esters - by continuous esterification of acrylic or methacrylic acid with methanol or ethanol

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1579107A (en) * 1967-07-11 1969-08-22
FR2002126A1 (en) * 1968-02-17 1969-10-03 Knapsack Ag
FR2202876A1 (en) * 1972-10-10 1974-05-10 Nippon Catalytic Chem Ind Acrylic or methacrylic esters - by continuous esterification of acrylic or methacrylic acid with methanol or ethanol

Also Published As

Publication number Publication date
GB2001315B (en) 1982-03-24
GB2001315A (en) 1979-01-31
NL7807420A (en) 1979-01-24
CS214895B2 (en) 1982-06-25
DE2832202A1 (en) 1979-02-01

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Legal Events

Date Code Title Description
ST Notification of lapse