ATE166643T1 - Verfahren zur reinigung von rohem caprolactam - Google Patents

Verfahren zur reinigung von rohem caprolactam

Info

Publication number
ATE166643T1
ATE166643T1 AT95102564T AT95102564T ATE166643T1 AT E166643 T1 ATE166643 T1 AT E166643T1 AT 95102564 T AT95102564 T AT 95102564T AT 95102564 T AT95102564 T AT 95102564T AT E166643 T1 ATE166643 T1 AT E166643T1
Authority
AT
Austria
Prior art keywords
caprolactam
crude caprolactam
wastewater stream
crude
purifying raw
Prior art date
Application number
AT95102564T
Other languages
English (en)
Inventor
Thomas P Losier
Donald R Johnson
Hugo Dr Fuchs
Gerald Dr Neubauer
Josef Dr Ritz
Original Assignee
Basf Corp
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 Basf Corp filed Critical Basf Corp
Application granted granted Critical
Publication of ATE166643T1 publication Critical patent/ATE166643T1/de

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
    • C07D201/02—Preparation of lactams
    • C07D201/12—Preparation of lactams by depolymerising polyamides
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D201/00—Preparation, separation, purification or stabilisation of unsubstituted lactams
    • C07D201/16—Separation or purification
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C08J2377/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S203/00—Distillation: processes, separatory
    • Y10S203/90—Particular type of heating

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Other In-Based Heterocyclic Compounds (AREA)
  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Polyamides (AREA)
AT95102564T 1994-03-04 1995-02-23 Verfahren zur reinigung von rohem caprolactam ATE166643T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/205,979 US5458740A (en) 1994-03-04 1994-03-04 Process for the purification of crude caprolactam

Publications (1)

Publication Number Publication Date
ATE166643T1 true ATE166643T1 (de) 1998-06-15

Family

ID=22764468

Family Applications (1)

Application Number Title Priority Date Filing Date
AT95102564T ATE166643T1 (de) 1994-03-04 1995-02-23 Verfahren zur reinigung von rohem caprolactam

Country Status (7)

Country Link
US (1) US5458740A (de)
EP (1) EP0670307B1 (de)
JP (1) JPH0841022A (de)
AT (1) ATE166643T1 (de)
DE (1) DE69502640T2 (de)
DK (1) DK0670307T3 (de)
ES (1) ES2116632T3 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4407222A1 (de) * 1994-03-04 1995-09-07 Basf Ag Verfahren zur Rückgewinnung von Caprolactam aus Oliogo- und/oder Polymeren des Caprolactams
US5990306A (en) 1997-09-03 1999-11-23 Alliedsignal Inc. Process for the purification of caprolactam obtained from the depolymerization of polyamide-containing carpet
FR2781796B1 (fr) * 1998-07-28 2000-09-22 Rhone Poulenc Fibres Procede de deshydratation de lactame
FR2809395B1 (fr) * 2000-05-26 2002-07-19 Rhodia Polyamide Intermediates Procede de purification de lactames
US7022844B2 (en) 2002-09-21 2006-04-04 Honeywell International Inc. Amide-based compounds, production, recovery, purification and uses thereof
CN104892511A (zh) * 2014-09-26 2015-09-09 江苏弘盛新材料股份有限公司 一种提高己内酰胺单体回收质量的系统

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE950726C (de) * 1952-05-16 1956-10-18 Glanzstoff Ag Verfahren zur Rueckgewinnung von Caprolactam aus Polyamiden, die aus Caprolactam bzw. ªŠ-Aminocapronsaeure hergestellt worden sind
GB951519A (en) * 1961-03-18 1964-03-04 Basf Ag Purification of lactams
DE1272287B (de) * 1967-03-30 1968-07-11 Basf Ag Verfahren zur Herstellung von aromatischen Thiocarbonsaeureamiden
US3502676A (en) * 1967-03-30 1970-03-24 Basf Ag Production of aromatic thioamides
NL7700234A (nl) * 1977-01-12 1978-07-14 Stamicarbon Werkwijze voor het winnen van epsilon-caprolac- tam uit epsilon-caprolactam- bevattend destil- latieresidu.
DE2926279A1 (de) * 1979-06-29 1981-01-08 Basf Ag Verfahren zur reinigung von caprolactam
NL8102280A (nl) * 1981-05-09 1982-12-01 Stamicarbon Werkwijze voor het zuiveren van epsilon-caprolactam.
US4720328A (en) * 1981-06-26 1988-01-19 Akzona Incorporated Method for removing impurities from caprolactam
US5169870A (en) * 1991-06-21 1992-12-08 Basf Corporation Reclaiming ε-caprolactam from nylon 6 carpet
US5241066A (en) * 1992-06-25 1993-08-31 Basf Corporation Method of recovering caprolactam from mixed waste

Also Published As

Publication number Publication date
DE69502640D1 (de) 1998-07-02
DE69502640T2 (de) 1998-09-17
ES2116632T3 (es) 1998-07-16
EP0670307A3 (de) 1996-03-06
US5458740A (en) 1995-10-17
JPH0841022A (ja) 1996-02-13
DK0670307T3 (da) 1998-10-12
EP0670307A2 (de) 1995-09-06
EP0670307B1 (de) 1998-05-27

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Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee