FR2320938B1 - - Google Patents

Info

Publication number
FR2320938B1
FR2320938B1 FR7624652A FR7624652A FR2320938B1 FR 2320938 B1 FR2320938 B1 FR 2320938B1 FR 7624652 A FR7624652 A FR 7624652A FR 7624652 A FR7624652 A FR 7624652A FR 2320938 B1 FR2320938 B1 FR 2320938B1
Authority
FR
France
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
FR7624652A
Other languages
French (fr)
Other versions
FR2320938A1 (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.)
BASF Schweiz AG
Original Assignee
Synthesewerk Schwarzheide 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 Synthesewerk Schwarzheide AG filed Critical Synthesewerk Schwarzheide AG
Publication of FR2320938A1 publication Critical patent/FR2320938A1/fr
Application granted granted Critical
Publication of FR2320938B1 publication Critical patent/FR2320938B1/fr
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/22—Evaporating by bringing a thin layer of the liquid into contact with a heated surface
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
FR7624652A 1975-08-15 1976-08-12 Procede permettant de separer des isocyanates organiques en continu par voie thermique d'un residu de distillation liquide Granted FR2320938A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD18786675A DD130143B1 (de) 1975-08-15 1975-08-15 Verfahren zur kontinuierlichen thermischen abtrennung organischer isocyanate aus fluessigem destillationsrueckstand

Publications (2)

Publication Number Publication Date
FR2320938A1 FR2320938A1 (fr) 1977-03-11
FR2320938B1 true FR2320938B1 (https=) 1980-05-30

Family

ID=5501391

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7624652A Granted FR2320938A1 (fr) 1975-08-15 1976-08-12 Procede permettant de separer des isocyanates organiques en continu par voie thermique d'un residu de distillation liquide

Country Status (4)

Country Link
DD (1) DD130143B1 (https=)
FR (1) FR2320938A1 (https=)
GB (1) GB1520055A (https=)
SU (1) SU983124A1 (https=)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2397396A1 (fr) * 1977-07-12 1979-02-09 Ugine Kuhlmann Procede de recuperation du toluene diisocyanate a partir des residus de fabrication
DE2915830A1 (de) * 1979-04-19 1980-10-23 Basf Ag Gewinnung von toluylendiisocyanat und/oder hoehersiedenden loesungsmitteln im wirbelbett aus destillationsrueckstaenden der toluylendiisocanat-herstellung
SE450641B (sv) * 1983-02-01 1987-07-13 Johnson Axel Eng Ab Sett for avskiljning av vattenlosliga foreningar efter forangning av vatten suspenderat i olja och anvendning av forfarandet
SE8604441L (sv) * 1986-10-20 1988-04-21 Nobel Chematur Ab Sett att utvinna isocyanater
ES2113388T3 (es) * 1991-06-26 1998-05-01 Lucky Ltd Procedimiento para la preparacion selectiva de 4,4-metilen-bis-(n-fenilalquilcarbamato).
DE4127514A1 (de) * 1991-08-20 1993-02-25 Bayer Ag Verfahren zur gewinnung von polyisocyanaten aus destillationsrueckstaenden der toluylendiisocyanatherstellung

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US3694323A (en) * 1968-08-05 1972-09-26 Du Pont Separation of distillable isocyanates from their phosgenation masses
CH506322A (de) * 1969-03-17 1971-04-30 List Heinz Mehrspindelige Misch- und Knetmaschine
DE2035731C3 (de) * 1970-07-18 1985-08-29 Bayer Ag, 5090 Leverkusen Verfahren zur einstufigen kontinuierlichen Abtrennung von Destillationsrückständen aus rohen Isocyanaten

Also Published As

Publication number Publication date
GB1520055A (en) 1978-08-02
DD130143B1 (de) 1979-12-27
FR2320938A1 (fr) 1977-03-11
DD130143A1 (de) 1978-03-08
SU983124A1 (ru) 1982-12-23

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Legal Events

Date Code Title Description
ST Notification of lapse