IE43576L - Process for isolating propylene glycol diesters in the¹preparation of propylene oxide. - Google Patents

Process for isolating propylene glycol diesters in the¹preparation of propylene oxide.

Info

Publication number
IE43576L
IE43576L IE760900A IE90076A IE43576L IE 43576 L IE43576 L IE 43576L IE 760900 A IE760900 A IE 760900A IE 90076 A IE90076 A IE 90076A IE 43576 L IE43576 L IE 43576L
Authority
IE
Ireland
Prior art keywords
propylene
propylene glycol
organic solvent
carboxylic acid
propylene oxide
Prior art date
Application number
IE760900A
Other versions
IE43576B1 (en
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
Application filed by Bayer Ag filed Critical Bayer Ag
Publication of IE43576L publication Critical patent/IE43576L/en
Publication of IE43576B1 publication Critical patent/IE43576B1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D301/00—Preparation of oxiranes
    • C07D301/02—Synthesis of the oxirane ring
    • C07D301/03—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds
    • C07D301/12—Synthesis of the oxirane ring by oxidation of unsaturated compounds, or of mixtures of unsaturated and saturated compounds with hydrogen peroxide or inorganic peroxides or peracids
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
    • C07C67/54—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation

Abstract

1491661 Isolation of propylene glycol diesters BAYER AG and DEUTSCHE GOLDUND SILBER-SCHEIDEANSTALT 28 April 1976 [30 April 1975] 17180/76 Heading C2C The invention comprises a process for isolating a propylene glycol dicarboxylate from the reaction mixture produced in the preparation of propylene oxide by reaction of propylene with a solution of a percarboxylic acid in an organic solvent, the boiling point of which is lower than that of the carboxylic acid which corresponds to the percarboxylic acid, and higher than that of propylene oxide, and which mixture comprises propylene oxide, the carboxylic acid corresponding to the percarboxylic acid, one or more of the by-products propylene glycol, propylene glycol monocarboxylate and propylene glycol dicarboxylate, any unreacted propylene and organic solvent, the said process comprising separating the reaction mixture by distillation into a first fraction containing propylene oxide and propylene and a second fraction containing the carboxylic acid, one or more of the by-products and organic solvent, distilling the second fraction in a column at a pressure of from 1À5 to 6 bars with an average residence time in the sump sufficient to produce a sump product which comprises the carboxylic acid and the corresponding propylene glycol dicarboxylate, the organic solvent being removed as the top product, and separating the propylene glycol dicarboxylate from the sump product. [GB1491661A]
IE900/76A 1975-04-30 1976-04-28 Process for isolating propylene glycol diesters in the preparation of propylene oxide IE43576B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2519291A DE2519291C3 (en) 1975-04-30 1975-04-30 Process for the recovery of propylene glycol dicarboxylates in the manufacture of propylene oxide

Publications (2)

Publication Number Publication Date
IE43576L true IE43576L (en) 1976-10-30
IE43576B1 IE43576B1 (en) 1981-04-08

Family

ID=5945444

Family Applications (1)

Application Number Title Priority Date Filing Date
IE900/76A IE43576B1 (en) 1975-04-30 1976-04-28 Process for isolating propylene glycol diesters in the preparation of propylene oxide

Country Status (12)

Country Link
JP (1) JPS5946230B2 (en)
BE (1) BE841201A (en)
CA (1) CA1069458A (en)
DE (1) DE2519291C3 (en)
ES (1) ES447409A1 (en)
FR (1) FR2309549A1 (en)
GB (1) GB1491661A (en)
IE (1) IE43576B1 (en)
NL (1) NL175909C (en)
NO (1) NO761472L (en)
RO (1) RO69788A (en)
SU (1) SU621313A3 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0540410U (en) * 1991-10-24 1993-06-01 清水建設株式会社 PC version joint
DE102009038398A1 (en) 2009-08-24 2011-03-03 Uhde Gmbh Process and apparatus for the preparation of alkylene oxides and of alkylene glycols

Also Published As

Publication number Publication date
NL175909B (en) 1984-08-16
BE841201A (en) 1976-10-28
IE43576B1 (en) 1981-04-08
DE2519291C3 (en) 1980-07-03
JPS5946230B2 (en) 1984-11-10
FR2309549B1 (en) 1979-09-07
NO761472L (en) 1976-11-02
SU621313A3 (en) 1978-08-25
JPS51133220A (en) 1976-11-18
RO69788A (en) 1980-12-30
CA1069458A (en) 1980-01-08
DE2519291B2 (en) 1979-10-11
FR2309549A1 (en) 1976-11-26
NL175909C (en) 1985-01-16
NL7604535A (en) 1976-11-02
DE2519291A1 (en) 1976-11-11
GB1491661A (en) 1977-11-09
ES447409A1 (en) 1978-10-16

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