ES471637A1 - Procedimiento de separacion sin descomposicion, completamen-te continuo y automatico, del toluendiisocianato - Google Patents

Procedimiento de separacion sin descomposicion, completamen-te continuo y automatico, del toluendiisocianato

Info

Publication number
ES471637A1
ES471637A1 ES471637A ES471637A ES471637A1 ES 471637 A1 ES471637 A1 ES 471637A1 ES 471637 A ES471637 A ES 471637A ES 471637 A ES471637 A ES 471637A ES 471637 A1 ES471637 A1 ES 471637A1
Authority
ES
Spain
Prior art keywords
decomposition
automatic
separation procedure
completely continuous
toluendiisocyanate
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
ES471637A
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.)
Produits Chimiques Ugine Kuhlmann
Pechiney SA
Original Assignee
Produits Chimiques Ugine Kuhlmann
Ugine Kuhlmann SA
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 Produits Chimiques Ugine Kuhlmann, Ugine Kuhlmann SA filed Critical Produits Chimiques Ugine Kuhlmann
Publication of ES471637A1 publication Critical patent/ES471637A1/es
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B01D3/10—Vacuum distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/18—Separation; Purification; Stabilisation; Use of additives
    • C07C263/20—Separation; Purification
    • 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
    • Y10S159/00—Concentrating evaporators
    • Y10S159/10—Organic

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

Procedimiento de separación sin descomposición, completamente continuo y automático del toluendiisocianato de los productos pesados de fabricación, que consiste en evaporar el toluendiisocianato en un evaporador de agitación y rascado, a una temperatura que comienza hacia los 70-175ºC, bajo una presión de 1 a 50mm Hg llevada seguidamente de forma progresiva a una temperatura de 210 a 250ºC, bajo una presión de 1 a 50 mm Hg, con un tiempo de permanencia mínimo de 15 mn en el evaporador, y en extraer los residuos de forma continua.
ES471637A 1977-07-12 1978-07-11 Procedimiento de separacion sin descomposicion, completamen-te continuo y automatico, del toluendiisocianato Expired ES471637A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7721436A FR2397396A1 (fr) 1977-07-12 1977-07-12 Procede de recuperation du toluene diisocyanate a partir des residus de fabrication

Publications (1)

Publication Number Publication Date
ES471637A1 true ES471637A1 (es) 1979-02-01

Family

ID=9193273

Family Applications (1)

Application Number Title Priority Date Filing Date
ES471637A Expired ES471637A1 (es) 1977-07-12 1978-07-11 Procedimiento de separacion sin descomposicion, completamen-te continuo y automatico, del toluendiisocianato

Country Status (17)

Country Link
US (1) US4216063A (es)
EP (1) EP0000463B1 (es)
JP (1) JPS5419938A (es)
AR (1) AR214462A1 (es)
AU (1) AU522377B2 (es)
BR (1) BR7804465A (es)
CA (1) CA1094090A (es)
DD (1) DD138314A5 (es)
DE (1) DE2861504D1 (es)
DK (1) DK154426C (es)
ES (1) ES471637A1 (es)
FR (1) FR2397396A1 (es)
IE (1) IE47024B1 (es)
IN (1) IN148484B (es)
IT (1) IT1111627B (es)
PT (1) PT68171A (es)
SU (1) SU1264840A3 (es)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2915830A1 (de) * 1979-04-19 1980-10-23 Basf Ag Gewinnung von toluylendiisocyanat und/oder hoehersiedenden loesungsmitteln im wirbelbett aus destillationsrueckstaenden der toluylendiisocanat-herstellung
FR2625742B1 (fr) * 1988-01-13 1990-06-22 Rhone Poulenc Chimie Procede de separation du toluene diisocyanate contenu dans les residus de sa fabrication
JPH02138567U (es) * 1989-04-21 1990-11-19
US5051152A (en) * 1989-09-26 1991-09-24 Air Products And Chemicals, Inc. Preparation of urethane prepolymers having low levels of residual toluene diisocyanate
DE4317669A1 (de) * 1993-05-27 1994-12-01 Bayer Ag Verfahren zur Herstellung von Isocyanaten und kontinuierlichen Aufarbeitung des Rückstandes
DE4430951C1 (de) * 1994-08-31 1996-05-23 Bayer Ag Verfahren und Vorrichtung zur Abtrennung eines festen Rückstandes aus seiner Lösung im gerührten Gutbett
US5962728A (en) * 1997-10-31 1999-10-05 Arco Chemical Technology, L.P. Isocyanate residue purification
DE10260092A1 (de) * 2002-12-19 2004-07-01 Basf Ag Verfahren zur Reinigung von Isocyanaten
US9061971B2 (en) * 2005-09-29 2015-06-23 Basf Aktiengesellschaft Method for purifying residues containing isocyanates
CN102408354A (zh) * 2011-10-24 2012-04-11 天津大学 一种回收甲苯二异氰酸酯的方法及装置
WO2014009342A1 (de) * 2012-07-11 2014-01-16 Bayer Materialscience Ag Verfahren zur aufarbeitung von destillationsrückständen aus der isocyanatherstellung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2706169A (en) * 1954-03-04 1955-04-12 Du Pont Flash distillation of 2,4-tolylene diisocyanate
US2974725A (en) * 1954-05-04 1961-03-14 Bayer Ag Process and apparatus for continuously obtaining dry materials
US3457291A (en) * 1965-04-01 1969-07-22 Union Carbide Corp Production of isocyanates
US3405040A (en) 1965-08-31 1968-10-08 Mobay Chemical Corp Method for recovering tolylene diisocyanate
US3542112A (en) * 1968-06-05 1970-11-24 Artisan Ind Thin-film evaporator having multi-zone temperature control jacket
US3694323A (en) * 1968-08-05 1972-09-26 Du Pont Separation of distillable isocyanates from their phosgenation masses
CA998060A (en) 1970-05-22 1976-10-05 Carl F. Irwin Recovery of organic isocyanate
DE2035731C3 (de) * 1970-07-18 1985-08-29 Bayer Ag, 5090 Leverkusen Verfahren zur einstufigen kontinuierlichen Abtrennung von Destillationsrückständen aus rohen Isocyanaten
DE2452805A1 (de) * 1974-11-07 1976-05-20 Basf Ag Verfahren zur abtrennung von rueckstaenden der toluylendiisocyanatherstellung
DD130143B1 (de) * 1975-08-15 1979-12-27 Guenter Muecke Verfahren zur kontinuierlichen thermischen abtrennung organischer isocyanate aus fluessigem destillationsrueckstand

Also Published As

Publication number Publication date
IT7868483A0 (it) 1978-06-23
AU522377B2 (en) 1982-06-03
CA1094090A (fr) 1981-01-20
US4216063A (en) 1980-08-05
FR2397396A1 (fr) 1979-02-09
IT1111627B (it) 1986-01-13
AU3790278A (en) 1980-01-17
IE781366L (en) 1979-01-12
FR2397396B1 (es) 1980-01-18
DD138314A5 (de) 1979-10-24
EP0000463A1 (fr) 1979-01-24
AR214462A1 (es) 1979-06-15
EP0000463B1 (fr) 1982-01-06
IN148484B (es) 1981-03-07
DK310578A (da) 1979-01-13
JPS612057B2 (es) 1986-01-22
SU1264840A3 (ru) 1986-10-15
DK154426C (da) 1989-04-10
BR7804465A (pt) 1979-03-20
DE2861504D1 (en) 1982-02-25
DK154426B (da) 1988-11-14
PT68171A (fr) 1978-07-01
JPS5419938A (en) 1979-02-15
IE47024B1 (en) 1983-11-30

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