JPS57163333A - Preparation of crotonaldehyde - Google Patents

Preparation of crotonaldehyde

Info

Publication number
JPS57163333A
JPS57163333A JP56046440A JP4644081A JPS57163333A JP S57163333 A JPS57163333 A JP S57163333A JP 56046440 A JP56046440 A JP 56046440A JP 4644081 A JP4644081 A JP 4644081A JP S57163333 A JPS57163333 A JP S57163333A
Authority
JP
Japan
Prior art keywords
exchange resin
reaction
catalyst
cation exchange
dehydration
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.)
Pending
Application number
JP56046440A
Other languages
Japanese (ja)
Inventor
Nobuhiro Watanabe
Eiichi Abe
Mitsuhisa Kawamoto
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.)
TOKUYAMA SEKIYU KAGAKU KK
Original Assignee
TOKUYAMA SEKIYU KAGAKU KK
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 TOKUYAMA SEKIYU KAGAKU KK filed Critical TOKUYAMA SEKIYU KAGAKU KK
Priority to JP56046440A priority Critical patent/JPS57163333A/en
Publication of JPS57163333A publication Critical patent/JPS57163333A/en
Pending 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

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

PURPOSE: To prepare the titled compound useful as a preparation raw material of n-butanol, perfumery, etc., suppressing the polymerization reaction, at reduced energy cost, in high yield, by dehydrating an acetaldol compound using a cation exchange resin as the catalyst.
CONSTITUTION: The objective compound can be prepared by feeding acetaldol or its derivative such as aldoxane, paraldol, etc. continuously to a cation exchange resin catalyst at a superficial velocity in column (SV) of 1W3l/hr, and carrying out the dehydration reaction at 90W120°C under a pressure between atmospheric pressure and 10kg/cm2G. A strongly acidic cation exchange resin and a weakly acidic one can be used for the purpose. The acidity of the ion exchange resin is preferably selected according to the reaction conditions, because although a strongly acidic resin has higher catalytic activity under the same reaction condition, there is an upper limit in the tolerable temperature and it is necessary to compensate the temperature limitation by the amount of the catalyst, and on the other hand, although a weakly acidic ion exchange resin has lower rate of dehydration reaction, it has high tolerable temperature, and the aldol dehydration conversion can be increased to 100% by raising the reaction rate.
COPYRIGHT: (C)1982,JPO&Japio
JP56046440A 1981-03-31 1981-03-31 Preparation of crotonaldehyde Pending JPS57163333A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56046440A JPS57163333A (en) 1981-03-31 1981-03-31 Preparation of crotonaldehyde

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56046440A JPS57163333A (en) 1981-03-31 1981-03-31 Preparation of crotonaldehyde

Publications (1)

Publication Number Publication Date
JPS57163333A true JPS57163333A (en) 1982-10-07

Family

ID=12747217

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56046440A Pending JPS57163333A (en) 1981-03-31 1981-03-31 Preparation of crotonaldehyde

Country Status (1)

Country Link
JP (1) JPS57163333A (en)

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