BE858718A - Purification du epsilon-caprolactame - Google Patents

Purification du epsilon-caprolactame

Info

Publication number
BE858718A
BE858718A BE180923A BE180923A BE858718A BE 858718 A BE858718 A BE 858718A BE 180923 A BE180923 A BE 180923A BE 180923 A BE180923 A BE 180923A BE 858718 A BE858718 A BE 858718A
Authority
BE
Belgium
Prior art keywords
caprolactam
epsilon
purification
Prior art date
Application number
BE180923A
Other languages
English (en)
French (fr)
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 BE858718A publication Critical patent/BE858718A/xx

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)
  • Other In-Based Heterocyclic Compounds (AREA)
BE180923A 1976-09-15 1977-09-15 Purification du epsilon-caprolactame BE858718A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2641449A DE2641449B2 (de) 1976-09-15 1976-09-15 Verfahren zur Reinigung einer Lösung von e-Caprolactam

Publications (1)

Publication Number Publication Date
BE858718A true BE858718A (fr) 1978-03-15

Family

ID=5987938

Family Applications (1)

Application Number Title Priority Date Filing Date
BE180923A BE858718A (fr) 1976-09-15 1977-09-15 Purification du epsilon-caprolactame

Country Status (11)

Country Link
US (1) US4170592A (ja)
JP (1) JPS6053012B2 (ja)
BE (1) BE858718A (ja)
BR (1) BR7706121A (ja)
DD (1) DD132788A5 (ja)
DE (1) DE2641449B2 (ja)
ES (1) ES462356A1 (ja)
FR (1) FR2364903A1 (ja)
GB (1) GB1556943A (ja)
IT (1) IT1091125B (ja)
NL (1) NL7710150A (ja)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW215084B (en) * 1992-04-17 1993-10-21 Sumitomo Chemical Co Process for producing a high purity caprolactam
BE1011047A3 (nl) * 1997-03-17 1999-04-06 Dsm Nv Werkwijze voor het zuiveren van caprolactam.
US5990306A (en) * 1997-09-03 1999-11-23 Alliedsignal Inc. Process for the purification of caprolactam obtained from the depolymerization of polyamide-containing carpet
US7022844B2 (en) 2002-09-21 2006-04-04 Honeywell International Inc. Amide-based compounds, production, recovery, purification and uses thereof

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2758991A (en) * 1956-08-14 Hvvevvtofry
FR1053885A (fr) * 1950-07-26 1954-02-05 Inventa Ag Procédé de préparation en continu de lactames purs par extraction
FR1095772A (fr) * 1953-03-19 1955-06-06 Stamicarbon Procédé pour épurer des lactames
FR1182076A (fr) * 1956-11-10 1959-06-22 Bayer Ag Procédé d'obtention d'epsilon-caprolactame pure à partir du mélange de réaction de beckmann
DE1031308B (de) * 1956-11-10 1958-06-04 Bayer Ag Verfahren zur Gewinnung von reinem Caprolactam aus dem neutralisierten Reaktionsgemisch der Beckmannschen Umlagerung von Cyclohexanonoxim
FR1217690A (fr) * 1957-10-26 1960-05-05 Stamicarbon Procédé pour préparer des lactames contenant des oligopolymères de lactame
US3761467A (en) * 1971-02-11 1973-09-25 Allied Chem Recovery of epsilon-caprolactam
NL7505130A (nl) * 1975-05-01 1976-11-03 Stamicarbon Werkwijze voor de winning van zuiver epsilon- -caprolactam uit een waterige oplossing hiervan.

Also Published As

Publication number Publication date
DE2641449B2 (de) 1980-07-31
ES462356A1 (es) 1978-06-16
FR2364903A1 (fr) 1978-04-14
JPS5337688A (en) 1978-04-06
DE2641449C3 (ja) 1987-12-03
BR7706121A (pt) 1978-07-04
FR2364903B1 (ja) 1982-03-26
NL7710150A (nl) 1978-03-17
US4170592A (en) 1979-10-09
GB1556943A (en) 1979-12-05
DE2641449A1 (de) 1978-03-23
DD132788A5 (de) 1978-11-01
IT1091125B (it) 1985-06-26
JPS6053012B2 (ja) 1985-11-22

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: BAYER A.G.

Effective date: 19900930