JPS5461109A - Preparation of 1,4-butanediol and/or 1,4-butenediol - Google Patents

Preparation of 1,4-butanediol and/or 1,4-butenediol

Info

Publication number
JPS5461109A
JPS5461109A JP12640577A JP12640577A JPS5461109A JP S5461109 A JPS5461109 A JP S5461109A JP 12640577 A JP12640577 A JP 12640577A JP 12640577 A JP12640577 A JP 12640577A JP S5461109 A JPS5461109 A JP S5461109A
Authority
JP
Japan
Prior art keywords
methanol
diol
ester
supplying
butanediol
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
JP12640577A
Other languages
Japanese (ja)
Inventor
Yoshinori Yoshida
Chihiro Nozaki
Hitoshi Oka
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.)
JSR Corp
Original Assignee
Japan Synthetic Rubber Co Ltd
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 Japan Synthetic Rubber Co Ltd filed Critical Japan Synthetic Rubber Co Ltd
Priority to JP12640577A priority Critical patent/JPS5461109A/en
Publication of JPS5461109A publication Critical patent/JPS5461109A/en
Pending legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To obtain 1,4-butanediol quatitatively using a small amount of methanol, by carrying out the methanolysis of a diol ester by countercurrent catalytic process while continuously supplying a solution of a basic catalyst dissolved in a resulting reaction solution.
CONSTITUTION: In ester interchange reaction of 1,4-diacetoxybutane and/or 1,4- diacetoxybutene (diol ester) with methanol, a countercurrent catalytic reaction is carried out by supplying a sloution, which is obtained by dissolving a basic catalyst in a part of a resulting reaction solution containing formed diol, from the upper part of a reactor continously, and supplying methanol from the lower part and a diol ester from the upper part thereof, to obtain the title diol from the lower part and an azeotropic mixture of by-produced methyl acetate and methanol from the upper part. The mixture is efficently hydrolyzed in the presence of an acidic cation, the hydrolyzate is distilled, and the vapor phase and methanol are recycled to the hydrolysis stage and the ester interchange stage, respectively
COPYRIGHT: (C)1979,JPO&Japio
JP12640577A 1977-10-22 1977-10-22 Preparation of 1,4-butanediol and/or 1,4-butenediol Pending JPS5461109A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12640577A JPS5461109A (en) 1977-10-22 1977-10-22 Preparation of 1,4-butanediol and/or 1,4-butenediol

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12640577A JPS5461109A (en) 1977-10-22 1977-10-22 Preparation of 1,4-butanediol and/or 1,4-butenediol

Publications (1)

Publication Number Publication Date
JPS5461109A true JPS5461109A (en) 1979-05-17

Family

ID=14934333

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12640577A Pending JPS5461109A (en) 1977-10-22 1977-10-22 Preparation of 1,4-butanediol and/or 1,4-butenediol

Country Status (1)

Country Link
JP (1) JPS5461109A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006098437A1 (en) * 2005-03-17 2006-09-21 Mitsubishi Chemical Corporation Process for producing polyether polyol compound

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006098437A1 (en) * 2005-03-17 2006-09-21 Mitsubishi Chemical Corporation Process for producing polyether polyol compound

Similar Documents

Publication Publication Date Title
JPS5293763A (en) Preparation of tetrahydrofuran
JPS5461109A (en) Preparation of 1,4-butanediol and/or 1,4-butenediol
GB2013184A (en) Preparation of Vinyl Acetate
JPS5239643A (en) A process for preparing terephtalic acid
JPS5559122A (en) Preparation of diol
JPS54119405A (en) Preparation of diol
JPS5673042A (en) Preparation of glycolic acid
KR870008829A (en) Hydrolysis Method of Dialkyl Carbonate
ES8106476A1 (en) Process for the recovery of carboxylic acids from mixtures containing glycol esters derived from these acids.
JPS5581826A (en) Production of tetrahydrofuran and 1,4-butanediol
JPS54163517A (en) Production of dialkylaminoalkyl acrylate or dialkylaminoalkyl methacrylate
JPS53105471A (en) Preparation of cyclic ethers
JPS53105421A (en) Preparation of optical active alpha-hydroxycarboxylic acid esters acid esters
JPS6485940A (en) Production of allyl alcohol
JPS5312833A (en) Preparation of dimethylterephthalate
IE44251L (en) Manufacture of butenediol diesters and their secondary¹products
JPS5390210A (en) Preparation of conjugated diene monoester
JPS5640637A (en) Preparation of formic acid
JPS5371035A (en) Recovery and purification of terephthalic acid dimethylester
JPS54106414A (en) Acyloxylation of 1,3-butadiene
JPS5384932A (en) Preparation of terephthalic acid
JPS5249292A (en) Process for preparing polyesters
JPS5293705A (en) Continuous preparation of glycerine
JPS52147696A (en) Preparation of unsaturated polyester resin from waste liquor containing maleic acid
JPS57165338A (en) Recovering method of acetone