GB1520055A - Process for continuous thermal separation of organic isocyanates from liquid distillation residues - Google Patents

Process for continuous thermal separation of organic isocyanates from liquid distillation residues

Info

Publication number
GB1520055A
GB1520055A GB3366976A GB3366976A GB1520055A GB 1520055 A GB1520055 A GB 1520055A GB 3366976 A GB3366976 A GB 3366976A GB 3366976 A GB3366976 A GB 3366976A GB 1520055 A GB1520055 A GB 1520055A
Authority
GB
United Kingdom
Prior art keywords
thermal separation
distillation residues
continuous thermal
organic isocyanates
liquid 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
GB3366976A
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 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 GB1520055A publication Critical patent/GB1520055A/en
Expired 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)
GB3366976A 1975-08-15 1976-08-12 Process for continuous thermal separation of organic isocyanates from liquid distillation residues Expired GB1520055A (en)

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 (1)

Publication Number Publication Date
GB1520055A true GB1520055A (en) 1978-08-02

Family

ID=5501391

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3366976A Expired GB1520055A (en) 1975-08-15 1976-08-12 Process for continuous thermal separation of organic isocyanates from liquid distillation residues

Country Status (4)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5314588A (en) * 1991-08-20 1994-05-24 Bayer Aktiengesellschaft Process for recovering polysocyanates from the distillation residues obtained in the production of tolylene diisocyanate
US5384424A (en) * 1991-06-26 1995-01-24 Lucky Limited Process for the selective preparation of 4,4-methylene-bis-(N-phenylalkylcarbamate)

Families Citing this family (4)

* 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

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5384424A (en) * 1991-06-26 1995-01-24 Lucky Limited Process for the selective preparation of 4,4-methylene-bis-(N-phenylalkylcarbamate)
US5314588A (en) * 1991-08-20 1994-05-24 Bayer Aktiengesellschaft Process for recovering polysocyanates from the distillation residues obtained in the production of tolylene diisocyanate

Also Published As

Publication number Publication date
DD130143B1 (de) 1979-12-27
FR2320938A1 (fr) 1977-03-11
DD130143A1 (de) 1978-03-08
FR2320938B1 (https=) 1980-05-30
SU983124A1 (ru) 1982-12-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee