CA962220A - Process for purifying lactams - Google Patents

Process for purifying lactams

Info

Publication number
CA962220A
CA962220A CA130,666A CA130666A CA962220A CA 962220 A CA962220 A CA 962220A CA 130666 A CA130666 A CA 130666A CA 962220 A CA962220 A CA 962220A
Authority
CA
Canada
Prior art keywords
purifying lactams
lactams
purifying
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
CA130,666A
Other languages
English (en)
Inventor
Hans-Joachim Schultze
Clau Berther
Ruthild Henn
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.)
Inventa AG fuer Forschung und Patentverwertung
Original Assignee
Inventa AG fuer Forschung und Patentverwertung
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 Inventa AG fuer Forschung und Patentverwertung filed Critical Inventa AG fuer Forschung und Patentverwertung
Application granted granted Critical
Publication of CA962220A publication Critical patent/CA962220A/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)
  • Pyrrole Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Other In-Based Heterocyclic Compounds (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
CA130,666A 1970-12-22 1971-12-21 Process for purifying lactams Expired CA962220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1893270A CH549020A (de) 1970-12-22 1970-12-22 Verfahren zur reinigung von lactamen.

Publications (1)

Publication Number Publication Date
CA962220A true CA962220A (en) 1975-02-04

Family

ID=4436199

Family Applications (1)

Application Number Title Priority Date Filing Date
CA130,666A Expired CA962220A (en) 1970-12-22 1971-12-21 Process for purifying lactams

Country Status (9)

Country Link
US (1) US3839324A (fr)
JP (1) JPS5133917B1 (fr)
BE (1) BE776978A (fr)
CA (1) CA962220A (fr)
CH (1) CH549020A (fr)
ES (1) ES398139A1 (fr)
IT (1) IT945553B (fr)
NL (1) NL151078B (fr)
PL (1) PL88948B1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52149017U (fr) * 1976-05-10 1977-11-11
JPS52154312U (fr) * 1976-05-18 1977-11-22
NL7700234A (nl) * 1977-01-12 1978-07-14 Stamicarbon Werkwijze voor het winnen van epsilon-caprolac- tam uit epsilon-caprolactam- bevattend destil- latieresidu.
US4767503A (en) * 1983-08-29 1988-08-30 Allied Corporation Removal of light impurities from caprolactam by distillation with water
DE3729853A1 (de) * 1987-09-05 1989-03-23 Basf Ag Verfahren zur aufarbeitung von destillationsrueckstaenden, die bei der reinigung von caprolactam anfallen
JP4182273B2 (ja) * 2000-06-27 2008-11-19 住友化学株式会社 ε−カプロラクタムの製造方法
EP1423361B8 (fr) * 2001-08-27 2018-05-23 Cap Iii B.V. Procede pour recuperer le caprolactame a partir d'un produit aqueux a base de caprolactame utilisant un amino-caproate alcalin prepare in situ
DE10225692A1 (de) * 2002-06-10 2003-12-24 Zimmer Ag Verfahren zur Herstellung von Caprolactam aus Polyamid-haltigen Abfällen
DE10333538B4 (de) * 2003-07-23 2008-04-10 Lurgi Zimmer Gmbh Verfahren zur Behandlung Polyamid-haltiger Abfälle mit der Wiederaufbereitung des Depolymerisationsrückstandes
CN101070298B (zh) * 2006-05-12 2012-01-25 中国石油化工股份有限公司 一种ε-己内酰胺的提纯精制方法
US7807826B2 (en) * 2007-10-02 2010-10-05 Evonik Degussa Gmbh Purification of a crude lactam mixture by means of melt crystallization
CN105601462B (zh) * 2016-02-19 2017-08-25 国药集团化学试剂有限公司 一种高纯苯提纯方法
CN109574928A (zh) * 2017-09-29 2019-04-05 中国石油化工股份有限公司 一种精制环己酮肟气相重排产物的方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2752336A (en) * 1956-06-26 For the pu
US2221369A (en) * 1940-11-12 Process foe producing lactams
US3145198A (en) * 1964-08-18 piija
US2313026A (en) * 1939-02-13 1943-03-02 Schlack Paul Process for the manufacture of lactams from oximes of cyclic ketones
US2818858A (en) * 1954-03-12 1958-01-07 Old Dominion Res And Dev Corp Underwater breathing apparatus
US3359260A (en) * 1964-12-30 1967-12-19 Union Carbide Corp Purification of epsilon-caprolactams
CH450433A (de) * 1965-06-15 1968-01-31 Inventa Ag Verfahren zur Reinigung von Lactamen
FR1504604A (fr) * 1965-10-01 1967-12-08 Huels Chemische Werke Ag Procédé pour la préparation en continu de lactame laurique en phase liquide

Also Published As

Publication number Publication date
CH549020A (de) 1974-05-15
NL7117473A (fr) 1972-06-26
JPS5133917B1 (fr) 1976-09-22
ES398139A1 (es) 1974-08-01
DE2163258B2 (de) 1975-07-31
BE776978A (fr) 1972-04-17
US3839324A (en) 1974-10-01
IT945553B (it) 1973-05-10
PL88948B1 (fr) 1976-10-30
NL151078B (nl) 1976-10-15
DE2163258A1 (de) 1972-06-29

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