FR2364905A1 - NEW PROCESS FOR PURIFYING E-CAPROLACTAM - Google Patents

NEW PROCESS FOR PURIFYING E-CAPROLACTAM

Info

Publication number
FR2364905A1
FR2364905A1 FR7727926A FR7727926A FR2364905A1 FR 2364905 A1 FR2364905 A1 FR 2364905A1 FR 7727926 A FR7727926 A FR 7727926A FR 7727926 A FR7727926 A FR 7727926A FR 2364905 A1 FR2364905 A1 FR 2364905A1
Authority
FR
France
Prior art keywords
caprolactam
purifying
new process
epsilon
caprclactam
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.)
Granted
Application number
FR7727926A
Other languages
French (fr)
Other versions
FR2364905B1 (en
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
Application filed by Bayer AG filed Critical Bayer AG
Publication of FR2364905A1 publication Critical patent/FR2364905A1/en
Application granted granted Critical
Publication of FR2364905B1 publication Critical patent/FR2364905B1/fr
Granted 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)
  • Polyamides (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Other In-Based Heterocyclic Compounds (AREA)
  • Pyrrole Compounds (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)

Abstract

Procédé de purification de epsilon -caprclactame, caractérisé en ce que le epsilon -caprolactame est traité avec du permanganate de potassium en présence de 0,01 à 5 % en poids d'eau, sur base du caprolactame, et est ensuite cristallisé à partir de toluène, de benzène, d'éthylbenzène ou de xylène.Process for the purification of epsilon -caprclactam, characterized in that the epsilon -caprolactam is treated with potassium permanganate in the presence of 0.01 to 5% by weight of water, based on caprolactam, and is then crystallized from toluene, benzene, ethylbenzene or xylene.

FR7727926A 1976-09-15 1977-09-15 NEW PROCESS FOR PURIFYING E-CAPROLACTAM Granted FR2364905A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762641478 DE2641478A1 (en) 1976-09-15 1976-09-15 CLEANING CAPROLACTAM

Publications (2)

Publication Number Publication Date
FR2364905A1 true FR2364905A1 (en) 1978-04-14
FR2364905B1 FR2364905B1 (en) 1981-11-27

Family

ID=5987958

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7727926A Granted FR2364905A1 (en) 1976-09-15 1977-09-15 NEW PROCESS FOR PURIFYING E-CAPROLACTAM

Country Status (9)

Country Link
JP (1) JPS5337687A (en)
BE (1) BE858713A (en)
BR (1) BR7706142A (en)
DD (1) DD132128A5 (en)
DE (1) DE2641478A1 (en)
ES (1) ES462353A1 (en)
FR (1) FR2364905A1 (en)
GB (1) GB1529559A (en)
NL (1) NL7710151A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2845075A1 (en) * 1978-10-17 1980-05-08 Basf Ag METHOD FOR PURIFYING ROHCAPROLACTAM
TW215084B (en) * 1992-04-17 1993-10-21 Sumitomo Chemical Co Process for producing a high purity caprolactam

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1397132A (en) * 1963-05-22 1965-04-30 Halcon International Inc Chemical process for the purification of lactams
FR1445047A (en) * 1964-08-18 1966-07-08 Zimmer Verfahrenstechnik Process for the purification of caprolactam by oxidation

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1397132A (en) * 1963-05-22 1965-04-30 Halcon International Inc Chemical process for the purification of lactams
FR1445047A (en) * 1964-08-18 1966-07-08 Zimmer Verfahrenstechnik Process for the purification of caprolactam by oxidation

Also Published As

Publication number Publication date
BR7706142A (en) 1978-07-04
NL7710151A (en) 1978-03-17
ES462353A1 (en) 1978-06-16
DE2641478A1 (en) 1978-03-23
BE858713A (en) 1978-03-15
JPS5337687A (en) 1978-04-06
GB1529559A (en) 1978-10-25
FR2364905B1 (en) 1981-11-27
DD132128A5 (en) 1978-08-30

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Legal Events

Date Code Title Description
ST Notification of lapse