JPS5517311A - Preparation of isobutyric acid - Google Patents

Preparation of isobutyric acid

Info

Publication number
JPS5517311A
JPS5517311A JP8912578A JP8912578A JPS5517311A JP S5517311 A JPS5517311 A JP S5517311A JP 8912578 A JP8912578 A JP 8912578A JP 8912578 A JP8912578 A JP 8912578A JP S5517311 A JPS5517311 A JP S5517311A
Authority
JP
Japan
Prior art keywords
pref
hours
stage
isobutyric acid
isobutylaldehyde
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.)
Granted
Application number
JP8912578A
Other languages
Japanese (ja)
Other versions
JPS6214534B2 (en
Inventor
Tatsuro Masuko
Shigeo Fukaya
Nobuyuki Murai
Jun Noma
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
Application filed by Mitsubishi Kasei Corp filed Critical Mitsubishi Kasei Corp
Priority to JP8912578A priority Critical patent/JPS5517311A/en
Priority to US06/052,590 priority patent/US4350829A/en
Priority to DE19792928002 priority patent/DE2928002A1/en
Priority to FR7918299A priority patent/FR2430929A1/en
Publication of JPS5517311A publication Critical patent/JPS5517311A/en
Publication of JPS6214534B2 publication Critical patent/JPS6214534B2/ja
Granted legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Abstract

PURPOSE: To prepare isobutyric acid useful as food additives, etc., in high conversion and yield, by the continuous oxidation of isobutylaldehyde with O2, etc., using two oxidation reactors wherein the reaction temperatures are different from each other, thereby reducing the residence time of the reaction mixture.
CONSTITUTION: Isobutyric acid is prepared continuously by (1) oxidizing isobutylaldehyde with O2 or an O2-containing gas, in liquid phase, in the presence of an alkali metal-containing compound at 50W70°C, pref. 55W65°C in a first-stage bubble column reactor while keeping the degree of conversion below 95%, and (2) further oxidizing the product of the first-stage reactor, in a second-stage reactor at a temperature higher than that of the first-stage reaction, pref. by ≥5°C, e.g. 70W85 °C. The average residence times in the first and the second bubble columns are 1W10 hours, pref. 2W8 hours, and 2W3 hours, respectively.
USE: Raw material of methacrylic acid and methyl methacrylate.
COPYRIGHT: (C)1980,JPO&Japio
JP8912578A 1978-07-14 1978-07-21 Preparation of isobutyric acid Granted JPS5517311A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP8912578A JPS5517311A (en) 1978-07-21 1978-07-21 Preparation of isobutyric acid
US06/052,590 US4350829A (en) 1978-07-14 1979-06-27 Process for preparing isobutyric acid
DE19792928002 DE2928002A1 (en) 1978-07-14 1979-07-11 METHOD FOR PRODUCING ISOBUTTERIC ACID
FR7918299A FR2430929A1 (en) 1978-07-14 1979-07-13 PROCESS FOR PREPARING ISOBUTYRIC ACID

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8912578A JPS5517311A (en) 1978-07-21 1978-07-21 Preparation of isobutyric acid

Publications (2)

Publication Number Publication Date
JPS5517311A true JPS5517311A (en) 1980-02-06
JPS6214534B2 JPS6214534B2 (en) 1987-04-02

Family

ID=13962158

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8912578A Granted JPS5517311A (en) 1978-07-14 1978-07-21 Preparation of isobutyric acid

Country Status (1)

Country Link
JP (1) JPS5517311A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003525921A (en) * 2000-03-04 2003-09-02 セラニーズ・ケミカルズ・ヨーロッパ・ゲゼルシヤフト・ミト・ベシユレンクテル・ハフツング Method for producing aliphatic carboxylic acid from aldehyde
JP2006143717A (en) * 2004-11-16 2006-06-08 Celanese Chemicals Europe Gmbh PROCESS FOR PREPARING STRAIGHT CHAIN AND beta-ALKYL BRANCHED ALIPHATIC CARBOXYLIC ACID
JP2015057386A (en) * 2013-09-16 2015-03-26 アームストロング ワールド インダストリーズ インコーポレーテッド Method for producing methacrylic acid from biobased starting material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003525921A (en) * 2000-03-04 2003-09-02 セラニーズ・ケミカルズ・ヨーロッパ・ゲゼルシヤフト・ミト・ベシユレンクテル・ハフツング Method for producing aliphatic carboxylic acid from aldehyde
JP2006143717A (en) * 2004-11-16 2006-06-08 Celanese Chemicals Europe Gmbh PROCESS FOR PREPARING STRAIGHT CHAIN AND beta-ALKYL BRANCHED ALIPHATIC CARBOXYLIC ACID
JP2015057386A (en) * 2013-09-16 2015-03-26 アームストロング ワールド インダストリーズ インコーポレーテッド Method for producing methacrylic acid from biobased starting material

Also Published As

Publication number Publication date
JPS6214534B2 (en) 1987-04-02

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