GB681059A - Unsaturated ethers - Google Patents

Unsaturated ethers

Info

Publication number
GB681059A
GB681059A GB28434/50A GB2843450A GB681059A GB 681059 A GB681059 A GB 681059A GB 28434/50 A GB28434/50 A GB 28434/50A GB 2843450 A GB2843450 A GB 2843450A GB 681059 A GB681059 A GB 681059A
Authority
GB
United Kingdom
Prior art keywords
silica gel
heating
acetal
fluidized
barium oxide
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
GB28434/50A
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.)
Celanese Corp
Original Assignee
Celanese Corp
Celanese Corp of America
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 Celanese Corp, Celanese Corp of America filed Critical Celanese Corp
Publication of GB681059A publication Critical patent/GB681059A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
    • C07C41/48—Preparation of compounds having groups
    • C07C41/50—Preparation of compounds having groups by reactions producing groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/08—Silica
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
    • C07C41/01—Preparation of ethers
    • C07C41/18—Preparation of ethers by reactions not forming ether-oxygen bonds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Dialkyl ethers in which one of the alkyl groups is unsaturated are made by heating a dialkyl acetal in the presence of a fluidized catalyst comprising barium oxide on silica gel. Advantageously, the catalyst passes an 80-200 mesh screen (American units). Preferred temperatures are 200-350 DEG C. and space velocities of vaporized acetal between 0.2 and 10. In examples (1) diethyl, and (2) dimethyl acetals are heated in fluidized barium oxide on silica gel (made by heating a mixture of barium hydroxide and silica gel) to yield ethyl and methyl vinyl ethers respectively.
GB28434/50A 1949-11-23 1950-11-21 Unsaturated ethers Expired GB681059A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US681059XA 1949-11-23 1949-11-23

Publications (1)

Publication Number Publication Date
GB681059A true GB681059A (en) 1952-10-15

Family

ID=22080434

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28434/50A Expired GB681059A (en) 1949-11-23 1950-11-21 Unsaturated ethers

Country Status (1)

Country Link
GB (1) GB681059A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1279013B (en) * 1965-08-18 1968-10-03 Ici Ltd Process for the separation of methyl vinyl ether from a methyl vinyl ether / acetaldehyde mixture
FR2497793A1 (en) * 1981-01-15 1982-07-16 Ciba Geigy Ag PROCESS FOR THE PREPARATION OF UNSATURATED ETHERS
EP0254976A1 (en) * 1986-07-30 1988-02-03 ENICHEM ANIC S.p.A. Process for the preparation of vinyl ethers

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1279013B (en) * 1965-08-18 1968-10-03 Ici Ltd Process for the separation of methyl vinyl ether from a methyl vinyl ether / acetaldehyde mixture
US3446853A (en) * 1965-08-18 1969-05-27 Ici Ltd Production of ethers
FR2497793A1 (en) * 1981-01-15 1982-07-16 Ciba Geigy Ag PROCESS FOR THE PREPARATION OF UNSATURATED ETHERS
US4396782A (en) 1981-01-15 1983-08-02 Ciba-Geigy Corporation Process for producing unsaturated ethers
EP0254976A1 (en) * 1986-07-30 1988-02-03 ENICHEM ANIC S.p.A. Process for the preparation of vinyl ethers
US4792637A (en) * 1986-07-30 1988-12-20 Enichem Anic Spa Process for the preparation of vinyl ethers

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