ES438731A1 - Process for the preparation of butanediols - Google Patents

Process for the preparation of butanediols

Info

Publication number
ES438731A1
ES438731A1 ES438731A ES438731A ES438731A1 ES 438731 A1 ES438731 A1 ES 438731A1 ES 438731 A ES438731 A ES 438731A ES 438731 A ES438731 A ES 438731A ES 438731 A1 ES438731 A1 ES 438731A1
Authority
ES
Spain
Prior art keywords
stage
butanediol
reacted
methanol
acetic acid
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.)
Expired
Application number
ES438731A
Other languages
Spanish (es)
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.)
Bayer AG
Original Assignee
Bayer AG
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 DE19742430022 external-priority patent/DE2430022C2/en
Priority claimed from DE2434909A external-priority patent/DE2434909A1/en
Application filed by Bayer AG filed Critical Bayer AG
Publication of ES438731A1 publication Critical patent/ES438731A1/en
Expired 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
    • C07C51/09—Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid esters or lactones
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/03—Preparation of carboxylic acid esters by reacting an ester group with a hydroxy group

Landscapes

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

Abstract

Procedure for the simultaneous production of butanediol-1,4, butanediol-1,2 and 2-methylpropandiol-1,3, characterized in that propylene, oxygen and acetic acid are reacted in the first stage in the presence of a catalyst that contains palladium to allyl acetate and water, allyl acetate is catalytically converted in a second stage with carbon monoxide and hydrogen in a mixture of 4-acetoxybutanol-1,2-acetoxybutanol-1 and 3-acetoxy-2-methylpropanol-1, This is reacted in a third stage catalytically with methanol to butanediol-1,4, butanediol-1,2 and 2-methyl-propanediol-1,3 and methyl acetate, the methyl acetate is reacted in a fourth stage with the water from the first stage in the presence of an acid to methanol and acetic acid cation exchanger and the methanol are returned to the third stage and the acetic acid to the first stage. (Machine-translation by Google Translate, not legally binding)
ES438731A 1974-06-22 1975-06-20 Process for the preparation of butanediols Expired ES438731A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19742430022 DE2430022C2 (en) 1974-06-22 1974-06-22 Process for the production of butanediols
DE2434909A DE2434909A1 (en) 1974-07-19 1974-07-19 1,4- and 1,2-Butanediol, and 2-methylpropane-1,3-diol - produced simultaneously from propylene via allyl acetate and acetoxy butanols in four-stage process

Publications (1)

Publication Number Publication Date
ES438731A1 true ES438731A1 (en) 1977-06-16

Family

ID=25767310

Family Applications (1)

Application Number Title Priority Date Filing Date
ES438731A Expired ES438731A1 (en) 1974-06-22 1975-06-20 Process for the preparation of butanediols

Country Status (8)

Country Link
JP (1) JPS5119709A (en)
BR (1) BR7503892A (en)
CS (1) CS182289B2 (en)
DD (1) DD120191A5 (en)
ES (1) ES438731A1 (en)
FR (1) FR2275429A1 (en)
GB (1) GB1457239A (en)
NL (1) NL7507328A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5845409B2 (en) * 1978-09-07 1983-10-08 ジェイエスアール株式会社 Diol manufacturing method

Also Published As

Publication number Publication date
CS182289B2 (en) 1978-04-28
DD120191A5 (en) 1976-06-05
NL7507328A (en) 1975-12-24
AU8236875A (en) 1977-01-06
JPS5119709A (en) 1976-02-17
GB1457239A (en) 1976-12-01
FR2275429A1 (en) 1976-01-16
BR7503892A (en) 1976-07-06
FR2275429B1 (en) 1978-10-13

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