FR2382442A1 - Procede de recuperation de la 2-pyrrolidone a partir de solutions aqueuses alcalines - Google Patents

Procede de recuperation de la 2-pyrrolidone a partir de solutions aqueuses alcalines

Info

Publication number
FR2382442A1
FR2382442A1 FR7814465A FR7814465A FR2382442A1 FR 2382442 A1 FR2382442 A1 FR 2382442A1 FR 7814465 A FR7814465 A FR 7814465A FR 7814465 A FR7814465 A FR 7814465A FR 2382442 A1 FR2382442 A1 FR 2382442A1
Authority
FR
France
Prior art keywords
pyrrolidone
recovering
poly
aqueous alkaline
alkaline solutions
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.)
Granted
Application number
FR7814465A
Other languages
English (en)
Other versions
FR2382442B1 (fr
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.)
Chevron USA Inc
Original Assignee
Chevron Research and Technology Co
Chevron Research Co
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
Priority claimed from US05/745,501 external-priority patent/US4050994A/en
Priority claimed from US05/792,421 external-priority patent/US4139696A/en
Application filed by Chevron Research and Technology Co, Chevron Research Co filed Critical Chevron Research and Technology Co
Publication of FR2382442A1 publication Critical patent/FR2382442A1/fr
Application granted granted Critical
Publication of FR2382442B1 publication Critical patent/FR2382442B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D207/18—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
    • C07D207/22—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D207/24—Oxygen or sulfur atoms
    • C07D207/26—2-Pyrrolidones
    • C07D207/263—2-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms
    • C07D207/267—2-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to the ring nitrogen atom
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
    • 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
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
    • C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
    • C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
    • C08G69/14—Lactams
    • C08G69/24—Pyrrolidones or piperidones

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Polyamides (AREA)
  • Pyrrole Compounds (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)

Abstract

L'invention concerne les perfectionnements apportés à un procédé, catalysé par une substance alcaline, de production de poly-2-pyrrolidone. On traite la solution aqueuse alcaline contenant la poly-2-pyrrolidone de réaction par un acide pour obtenir un pH égal ou inférieur à 7. On récupère la pyrrolidone polymérisable à partir de la solution traitée par une évaporation en deux stades dont un sous pression réduite. La poly-2-pyrrolidone permet de produire des matières du type << Nylon >>.
FR7814465A 1976-11-26 1978-05-16 Procede de recuperation de la 2-pyrrolidone a partir de solutions aqueuses alcalines Granted FR2382442A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/745,501 US4050994A (en) 1976-11-26 1976-11-26 Recovery of 2-pyrrolidone from dilute alkaline solutions
US05/792,421 US4139696A (en) 1977-04-29 1977-04-29 Continuous polymerization of 2-pyrrolidone

Publications (2)

Publication Number Publication Date
FR2382442A1 true FR2382442A1 (fr) 1978-09-29
FR2382442B1 FR2382442B1 (fr) 1981-01-16

Family

ID=27114468

Family Applications (2)

Application Number Title Priority Date Filing Date
FR7734795A Granted FR2382471A1 (fr) 1976-11-26 1977-11-18 Procede de polymerisation et de recuperation de la 2-pyrrolidone
FR7814465A Granted FR2382442A1 (fr) 1976-11-26 1978-05-16 Procede de recuperation de la 2-pyrrolidone a partir de solutions aqueuses alcalines

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FR7734795A Granted FR2382471A1 (fr) 1976-11-26 1977-11-18 Procede de polymerisation et de recuperation de la 2-pyrrolidone

Country Status (8)

Country Link
JP (1) JPS5367798A (fr)
DE (1) DE2751535A1 (fr)
ES (1) ES464485A1 (fr)
FR (2) FR2382471A1 (fr)
GB (1) GB1592178A (fr)
IT (1) IT1087943B (fr)
MX (1) MX4979E (fr)
NL (1) NL7713024A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1566154A1 (fr) 2004-02-20 2005-08-24 Argomedical AG Prothèse pour le remplacement de la surface dans la zone de la boule d'un joint à rotule
KR101568908B1 (ko) * 2013-12-02 2015-11-12 지에스칼텍스 주식회사 입자상 폴리아미드 수지의 연속 제조장치 및 방법

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3681293A (en) * 1970-09-03 1972-08-01 Radiation Res Corp Continuous polymerization of 2-pyrrolidone with carbon dioxide as activator

Also Published As

Publication number Publication date
GB1592178A (en) 1981-07-01
DE2751535A1 (de) 1978-06-01
FR2382471A1 (fr) 1978-09-29
IT1087943B (it) 1985-06-04
NL7713024A (nl) 1978-05-30
FR2382471B1 (fr) 1981-01-02
FR2382442B1 (fr) 1981-01-16
JPS5367798A (en) 1978-06-16
MX4979E (es) 1983-01-28
ES464485A1 (es) 1979-01-01
JPS5731742B2 (fr) 1982-07-06

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DA Annulment of decision of lapse
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