GB787927A - Recovery of gamma-butyrolactone - Google Patents

Recovery of gamma-butyrolactone

Info

Publication number
GB787927A
GB787927A GB25741/55A GB2574155A GB787927A GB 787927 A GB787927 A GB 787927A GB 25741/55 A GB25741/55 A GB 25741/55A GB 2574155 A GB2574155 A GB 2574155A GB 787927 A GB787927 A GB 787927A
Authority
GB
United Kingdom
Prior art keywords
butyrolactone
solvent
acids
lactone
mixture
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
GB25741/55A
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 GB787927A publication Critical patent/GB787927A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
    • C07D307/26—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
    • C07D307/30—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D307/32—Oxygen atoms
    • C07D307/33—Oxygen atoms in position 2, the oxygen atom being in its keto or unsubstituted enol form
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D207/18—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
    • C07D207/22—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D207/24—Oxygen or sulfur atoms
    • C07D207/26—2-Pyrrolidones
    • C07D207/263—2-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms
    • C07D207/267—2-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to the ring nitrogen atom

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Gamma butyrolactone is recovered from a mixture of the lactone containing also at least one glycol ester, derived from ethylene, propylene or 2 : 3-butylene glycol and a monocarboxylic acid having 1 to 4 carbon atoms, by solvent extraction with a liquid aliphatic or cycloaliphatic hydrocarbon. Two phases result, one containing the bulk of the lactone and the other the solvent and most of the glycol esters. The hydrocarbon solvent may be used with water whereby the lactone separates out as an aqueous solution. If desired, the mixture may be extracted with the two solvents separately. Extraction may be batchwise or continuous, and co- or counter-currentwise, in one or more stages. The crude butyrolactone mixture may be that obtained as a by-product in the partial oxidation of C3-5 aliphatic hydrocarbons to lower aliphatic acids, and that form of lactone should preferably not contain more than 2 per cent of acids. In an example, a mixture of butyrolactone, acetic, propionic and butyric acids and minor amounts of glycol esters comprising mono- and di-esters of the above-mentioned glycols with C1-4 aliphatic acids and obtained by liquid phase oxidation of n-butane is fractionated to remove substantially all the acids and is then subjected to extraction with a solvent consisting of equal volumes of water and n-hexane, giving an aqueous phase, which on evaporation yields 98 per cent pure butyrolactone, and a hexane solution of the glycol esters from which the solvent is recovered for re-use. n-Pentane and n-heptane are other specified solvents.
GB25741/55A 1954-09-10 1955-09-08 Recovery of gamma-butyrolactone Expired GB787927A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US787927XA 1954-09-10 1954-09-10

Publications (1)

Publication Number Publication Date
GB787927A true GB787927A (en) 1957-12-18

Family

ID=22146255

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25741/55A Expired GB787927A (en) 1954-09-10 1955-09-08 Recovery of gamma-butyrolactone

Country Status (1)

Country Link
GB (1) GB787927A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5030328A (en) * 1989-11-16 1991-07-09 Basf Aktiengesellschaft Method of separating γ-butyrolactone from mixtures containing diethyl succinate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5030328A (en) * 1989-11-16 1991-07-09 Basf Aktiengesellschaft Method of separating γ-butyrolactone from mixtures containing diethyl succinate

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