ES8103038A1 - Un procedimiento para purificar caprolactama. - Google Patents

Un procedimiento para purificar caprolactama.

Info

Publication number
ES8103038A1
ES8103038A1 ES488851A ES488851A ES8103038A1 ES 8103038 A1 ES8103038 A1 ES 8103038A1 ES 488851 A ES488851 A ES 488851A ES 488851 A ES488851 A ES 488851A ES 8103038 A1 ES8103038 A1 ES 8103038A1
Authority
ES
Spain
Prior art keywords
caprolactame
stage
alkaline
distillation
possibly
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
ES488851A
Other languages
English (en)
Other versions
ES488851A0 (es
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.)
SNIA Viscosa SpA
Original Assignee
SNIA Viscosa SpA
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 SNIA Viscosa SpA filed Critical SNIA Viscosa SpA
Publication of ES8103038A1 publication Critical patent/ES8103038A1/es
Publication of ES488851A0 publication Critical patent/ES488851A0/es
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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Other In-Based Heterocyclic Compounds (AREA)

Abstract

PROCEDIMIENTO PARA PURIFICAR CAPROLACTAMA MEDIANTE DESTILACION AL VACIO. SE BASA EN LA REALIZACION DE LA DESTILACION, DE UNA MANERA CONTINUA O DISCONTINUA, EN LA REALIZACION DE LA DESTILACION, DE UNA MANERA CONTINUA O DISCONTINUA, EN LAS SIGUIENTES ETAPAS DESTILACION RAPIDA AL VACIO DE LA CAPROLACTAMA BRUTA EN PRESENCIA, OPCIONAL, DE UN HIDROXIDO ALCALINO Y/O ALCALINO-TERERO; DESTILACION CON RECTIFICACION AL VACIO DEL PRODUCTO OBTENIDO EN LA ETAPA ANTERIOR, CON SEPARACION DE SUBPRODUCTOS DE ALTO PUNTO DE EBULLICION, Y DESTILACION RAPIDA AL VACIO DE LA CAPROLACTAMA PROPORCIONADA POR LA ETAPA ANTERIOR, EN PRESENCIA DE UN HIDROXIDO ALCALINO Y/O ALCALINO-TERREO. COMO ELEMENTO CATALIZADOR SE EMPLEA PREFERENTEMENTE HIDROXIDO SODICO EN FORMA DE SOLUCION ACUOSA. SE EMPLEA PREFERENTEMENTE EN LA PURIFICACION DE LA CAPROLACTAMA OBTENIDA POR REACCION DE COMPUESTOS DE NITROSILO CON DERIVADOS CARBOCICLICOS.
ES488851A 1979-02-28 1980-02-22 Un procedimiento para purificar caprolactama. Granted ES488851A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT20612/79A IT1113404B (it) 1979-02-28 1979-02-28 Internazionale brevetti s.r.l.via brentano 2 milano

Publications (2)

Publication Number Publication Date
ES8103038A1 true ES8103038A1 (es) 1981-02-16
ES488851A0 ES488851A0 (es) 1981-02-16

Family

ID=11169534

Family Applications (1)

Application Number Title Priority Date Filing Date
ES488851A Granted ES488851A0 (es) 1979-02-28 1980-02-22 Un procedimiento para purificar caprolactama.

Country Status (10)

Country Link
US (1) US4326925A (es)
JP (1) JPS55118457A (es)
BR (1) BR8001154A (es)
DE (1) DE3007338A1 (es)
ES (1) ES488851A0 (es)
FR (1) FR2450255A1 (es)
GB (1) GB2043068A (es)
IT (1) IT1113404B (es)
MX (1) MX152276A (es)
NL (1) NL8001177A (es)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT8020902A0 (it) * 1980-03-25 1980-03-25 Snia Viscosa Procedimento ed apparecchiatura per la separazione continua per via termica di miscele liquide dicomposti termolabili.
NL8102280A (nl) * 1981-05-09 1982-12-01 Stamicarbon Werkwijze voor het zuiveren van epsilon-caprolactam.
DE3729853A1 (de) * 1987-09-05 1989-03-23 Basf Ag Verfahren zur aufarbeitung von destillationsrueckstaenden, die bei der reinigung von caprolactam anfallen
NL1003564C2 (nl) 1996-07-11 1998-01-15 Dsm Nv Werkwijze voor het scheiden van een ketoxim of aldoxim van een amide.
US5990306A (en) 1997-09-03 1999-11-23 Alliedsignal Inc. Process for the purification of caprolactam obtained from the depolymerization of polyamide-containing carpet
SI3568389T1 (sl) * 2017-12-15 2021-03-31 Aquafilslo D.O.O. Postopek za čiščenje kaprolaktama iz raztopine surovega kaprolaktama brez ekstrakcije z organskimi topili
CN114478343B (zh) * 2022-02-24 2024-07-23 江苏扬农化工集团有限公司 己内酰胺的精制提纯方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3179657A (en) * 1965-04-20 Process for purifying caprolactam
US3156683A (en) * 1964-11-10 Purification of caprolactam
DE739953C (de) * 1940-12-03 1943-10-26 Ig Farbenindustrie Ag Verfahren zur Reinigung von Lactamen
DE745224C (de) * 1941-06-28 1944-03-01 Ig Farbenindustrie Ag Verfahren zur Reinigung von Lactamen
FR1049130A (fr) * 1951-01-18 1953-12-28 Directie Staatsmijnen Nl Procédé pour enlever du caprolactame à des solutions de cotte-substance contenuesdans de l'acide sulfurique ou de l'oléum
FR1490895A (fr) * 1965-09-01 1967-08-04 Basf Ag Purification de laurolactame
DE2035859A1 (en) * 1969-09-09 1971-03-11 VEB Chemieanlagenbau Erfurt Rudis leben, χ 5211 Rudisieben Purification of thermally unstable mater- - ials eg caprolactam
DE2224505C3 (de) * 1972-05-19 1980-09-18 Bayer Ag Verfahren zur Reinigung von Caprolactam
IT956941B (it) * 1972-06-28 1973-10-10 Snia Viscosa Procedimento per la preparazione di lattame puro da sue soluzioni primarie in solvente organico
DE2641454A1 (de) * 1976-09-15 1978-03-23 Bayer Ag Verfahren zur reinigung von epsilon-caprolactam

Also Published As

Publication number Publication date
FR2450255A1 (fr) 1980-09-26
NL8001177A (nl) 1980-09-01
ES488851A0 (es) 1981-02-16
US4326925A (en) 1982-04-27
BR8001154A (pt) 1980-11-04
GB2043068A (en) 1980-10-01
IT7920612A0 (it) 1979-02-28
MX152276A (es) 1985-06-19
JPS55118457A (en) 1980-09-11
IT1113404B (it) 1986-01-20
DE3007338A1 (de) 1980-09-18
DE3007338C2 (es) 1992-02-13

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19990217