ES404834A1 - Procedimiento para la recuperacion de caprolactama a partirde una mezcla que contiene caprolactama y sus oligomeros. - Google Patents

Procedimiento para la recuperacion de caprolactama a partirde una mezcla que contiene caprolactama y sus oligomeros.

Info

Publication number
ES404834A1
ES404834A1 ES404834A ES404834A ES404834A1 ES 404834 A1 ES404834 A1 ES 404834A1 ES 404834 A ES404834 A ES 404834A ES 404834 A ES404834 A ES 404834A ES 404834 A1 ES404834 A1 ES 404834A1
Authority
ES
Spain
Prior art keywords
caprolactam
oligomers
recovery
heating
film distillation
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
ES404834A
Other languages
English (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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik 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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Publication of ES404834A1 publication Critical patent/ES404834A1/es
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)
  • Other In-Based Heterocyclic Compounds (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Polyamides (AREA)
  • Pyrrole Compounds (AREA)
ES404834A 1971-07-14 1972-07-13 Procedimiento para la recuperacion de caprolactama a partirde una mezcla que contiene caprolactama y sus oligomeros. Expired ES404834A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2135085A DE2135085C3 (de) 1971-07-14 1971-07-14 Verfahren zur Wiedergewinnung von Caprolactam aus einem Gemisch, das Caprolactam und dessen Oligomere enthält

Publications (1)

Publication Number Publication Date
ES404834A1 true ES404834A1 (es) 1975-06-16

Family

ID=5813596

Family Applications (1)

Application Number Title Priority Date Filing Date
ES404834A Expired ES404834A1 (es) 1971-07-14 1972-07-13 Procedimiento para la recuperacion de caprolactama a partirde una mezcla que contiene caprolactama y sus oligomeros.

Country Status (7)

Country Link
US (1) US3855080A (es)
BE (1) BE786176A (es)
DE (1) DE2135085C3 (es)
ES (1) ES404834A1 (es)
GB (1) GB1388166A (es)
IT (1) IT961380B (es)
NL (1) NL7209438A (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4311642A (en) * 1980-09-17 1982-01-19 Allied Corporation Recovery of caprolactam from nylon 6 oligomers
DE3311260A1 (de) * 1983-03-28 1984-10-04 Basf Ag, 6700 Ludwigshafen Verfahren zum kontinuierlichen eindampfen von caprolactam und dessen oligomere enthaltenden waessrigen loesungen
US4764607A (en) * 1986-12-22 1988-08-16 Allied Corporation Method for recovering caprolactam
PT1181272E (pt) * 2000-12-28 2003-01-31 Lundbeck & Co As H Processo para a preparacao de citalopram puro

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE752574C (de) * 1942-06-26 1953-03-16 Ig Farbenindustrie Ag Verfahren zur Herstellung von ªŠ-Caprolactam
US2952675A (en) * 1958-07-01 1960-09-13 Inventa A G Fur Forschun Und P Process of recovering epsilon-caprolactam from its polymer
US3252502A (en) * 1962-01-19 1966-05-24 Allied Chem Centrifugal wiped film evaporation process for viscous materials
NL135959C (es) * 1964-12-23
US3497500A (en) * 1967-06-16 1970-02-24 Union Carbide Corp Process for production of epsilon-caprolactam
US3600381A (en) * 1968-05-09 1971-08-17 Teijin Ltd Caprolactam purification process
NL161063C (nl) * 1969-04-05 1980-01-15 Stamicarbon Werkwijze voor het scheiden van vloeistoffen met behulp van een gelijkstroomverdamper met verticale pijpen.

Also Published As

Publication number Publication date
DE2135085C3 (de) 1981-12-03
DE2135085B2 (de) 1976-07-22
BE786176A (fr) 1973-01-12
GB1388166A (en) 1975-03-26
NL7209438A (es) 1973-01-16
DE2135085A1 (de) 1973-02-01
US3855080A (en) 1974-12-17
IT961380B (it) 1973-12-10

Similar Documents

Publication Publication Date Title
CA974032A (en) Cyclical process for recovery of elemental sulfur from waste gases
ES404834A1 (es) Procedimiento para la recuperacion de caprolactama a partirde una mezcla que contiene caprolactama y sus oligomeros.
CA982786A (en) Method of recovering fluorine from waste gases
ES8704550A1 (es) Procedimiento para purificar litio
ES398140A1 (es) Procedimiento para la purificacion de lactamas.
GB1083537A (en) Process for decomposing aluminium nitrate nonahydrate
GB1520055A (en) Process for continuous thermal separation of organic isocyanates from liquid distillation residues
JPS5210816A (en) Process for recovering low carbon ferro- chromium slag
ES462355A1 (es) Procedimiento para la purificacion de epsilon-caprolactama.
CA922486A (en) Method of recovering fluorine from carbonaceous waste material
GB1238632A (es)
GB883746A (en) Purification of phenol
FR2082171A5 (en) Recovery of superhard anthracite pitch
RO63751A (fr) Procede pour la separation d'acetylene des gaz de pyrolyse
BE825219A (fr) Procede pour recuperer le butadiene des gaz uses d'un procede d'acetoxylation
KR840005821A (ko) 프로필렌 중합체의 정제 방법
DE3067995D1 (en) A process and apparatus for recovering energy from molten slag
GB917749A (en) Preparation of 2,6-di-t-alkylphenoxy boron dihalides
FR2314921A1 (fr) Procede de pyrolyse du borohydrure de tetraethylammonium
GB879549A (en) Purification of maleic anhydride
FR2240805A1 (en) Polymer recovery process from waste matter - has fraction vapour cooling stations and return of residue as fuel
JPS5227499A (en) Process for recovery of polyurethane resins
IL47530A0 (en) Method and apparatus for extracting impurities from liquids by distillation at elevated temperatures and reduced pressure
CA952692A (en) Process and apparatus for gas purification and recovering useful by-products
JPS5253017A (en) Process for recovering asbestos fibers from waste gasket containing asbestos