GB1198428A - Solvent Extraction Process for Caprolactam - Google Patents

Solvent Extraction Process for Caprolactam

Info

Publication number
GB1198428A
GB1198428A GB3285667A GB3285667A GB1198428A GB 1198428 A GB1198428 A GB 1198428A GB 3285667 A GB3285667 A GB 3285667A GB 3285667 A GB3285667 A GB 3285667A GB 1198428 A GB1198428 A GB 1198428A
Authority
GB
United Kingdom
Prior art keywords
caprolactam
alkaline earth
hydrocarbon
alkali metal
earth metal
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
GB3285667A
Inventor
Brian Walton Harris
Clifford William Capp
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.)
BP Chemicals Ltd
BP Chemicals UK Ltd
Original Assignee
BP Chemicals Ltd
BP Chemicals UK 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 BP Chemicals Ltd, BP Chemicals UK Ltd filed Critical BP Chemicals Ltd
Priority to GB3285667A priority Critical patent/GB1198428A/en
Publication of GB1198428A publication Critical patent/GB1198428A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
    • C07D201/16—Separation or purification

Landscapes

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

Abstract

1,198,428. Extraction of caprolactam. BP CHEMICALS (U.K.) Ltd. 21 Aug., 1968 [18 July, 1967], No. 32856/67. Heading C2C. Caprolactam is recovered from mixtures containing (a) alkali metal or alkaline earth metal hydroxides, alkoxides or aryloxides together with (b) caprolactam and/or alkali metal or alkaline earth metal derivatives of caprolactam, and (c) methanol by extraction from the mixture into a liquid hydrocarbon and separating the liquid hydrocarbon from the mixture. The caprolactam in the hydrocarbon extract may be separated from the hydrocarbon in any convenient way. In Examples 1 to 3, cyclohexanone obtained as the co-product of caprolactam and/or its alkali metal or alkaline earth metal derivatives is also extracted according to the present invention.
GB3285667A 1967-07-18 1967-07-18 Solvent Extraction Process for Caprolactam Expired GB1198428A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3285667A GB1198428A (en) 1967-07-18 1967-07-18 Solvent Extraction Process for Caprolactam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3285667A GB1198428A (en) 1967-07-18 1967-07-18 Solvent Extraction Process for Caprolactam

Publications (1)

Publication Number Publication Date
GB1198428A true GB1198428A (en) 1970-07-15

Family

ID=10345036

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3285667A Expired GB1198428A (en) 1967-07-18 1967-07-18 Solvent Extraction Process for Caprolactam

Country Status (1)

Country Link
GB (1) GB1198428A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2086263A1 (en) * 1970-04-22 1971-12-31 Bayer Ag
WO1997030028A2 (en) * 1996-02-17 1997-08-21 Dsm N.V. Recovery of epsilon-caprolactam from aqueous mixtures
EP0826665A1 (en) * 1996-09-02 1998-03-04 Dsm N.V. Recovery of epsilon-caprolactam from aqueous mixtures
CN115253380A (en) * 2022-08-19 2022-11-01 清元智能科技研究院(湖北)有限公司 Caprolactam extraction system and method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2086263A1 (en) * 1970-04-22 1971-12-31 Bayer Ag
WO1997030028A2 (en) * 1996-02-17 1997-08-21 Dsm N.V. Recovery of epsilon-caprolactam from aqueous mixtures
WO1997030028A3 (en) * 1996-02-17 1997-09-25 Dsm Nv Recovery of epsilon-caprolactam from aqueous mixtures
US6191274B1 (en) 1996-02-17 2001-02-20 Dsm N.V. Recovery of ε-caprolactam
EP0826665A1 (en) * 1996-09-02 1998-03-04 Dsm N.V. Recovery of epsilon-caprolactam from aqueous mixtures
CN115253380A (en) * 2022-08-19 2022-11-01 清元智能科技研究院(湖北)有限公司 Caprolactam extraction system and method
CN115253380B (en) * 2022-08-19 2023-09-01 清元智能科技研究院(湖北)有限公司 Caprolactam extraction system and method

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees