FR2320938A1 - PROCESS ALLOWING TO SEPARATE ORGANIC ISOCYANATES CONTINUOUSLY BY THERMAL ROUTE FROM A LIQUID DISTILLATION RESIDUE - Google Patents

PROCESS ALLOWING TO SEPARATE ORGANIC ISOCYANATES CONTINUOUSLY BY THERMAL ROUTE FROM A LIQUID DISTILLATION RESIDUE

Info

Publication number
FR2320938A1
FR2320938A1 FR7624652A FR7624652A FR2320938A1 FR 2320938 A1 FR2320938 A1 FR 2320938A1 FR 7624652 A FR7624652 A FR 7624652A FR 7624652 A FR7624652 A FR 7624652A FR 2320938 A1 FR2320938 A1 FR 2320938A1
Authority
FR
France
Prior art keywords
continuously
distillation residue
separate organic
organic isocyanates
process allowing
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
FR7624652A
Other languages
French (fr)
Other versions
FR2320938B1 (en
Inventor
Gunter Mucke
Dieter Starosta
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/en
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 PROCESS ALLOWING TO SEPARATE ORGANIC ISOCYANATES CONTINUOUSLY BY THERMAL ROUTE FROM A LIQUID DISTILLATION RESIDUE Granted FR2320938A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DD18786675A DD130143B1 (en) 1975-08-15 1975-08-15 METHOD FOR CONTINUOUS THERMAL SEPARATION OF ORGANIC ISOCYANATES FROM LIQUID DISTILLATION RESIDUE

Publications (2)

Publication Number Publication Date
FR2320938A1 true FR2320938A1 (en) 1977-03-11
FR2320938B1 FR2320938B1 (en) 1980-05-30

Family

ID=5501391

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7624652A Granted FR2320938A1 (en) 1975-08-15 1976-08-12 PROCESS ALLOWING TO SEPARATE ORGANIC ISOCYANATES CONTINUOUSLY BY THERMAL ROUTE FROM A LIQUID DISTILLATION RESIDUE

Country Status (4)

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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4216063A (en) * 1977-07-12 1980-08-05 Produits Chimiques Ugine Kuhlmann Process for recovery of toluene diisocyanate
EP0017972A1 (en) * 1979-04-19 1980-10-29 BASF Aktiengesellschaft Fluidised-bed recovery of tolylene diisocyanate and/or high boiling solvents from distillation residues of the production of tolylene diisocyanate
EP0115333A2 (en) * 1983-02-01 1984-08-08 Axel Johnson Engineering Ab Method and apparatus for separating water and solid particles from oils
EP0269218A1 (en) * 1986-10-20 1988-06-01 Chematur Aktiebolag Method for the recovery of isocyanates
EP0528299A2 (en) * 1991-08-20 1993-02-24 Bayer Ag Method of recovery of polyisocyanates from distillation residues of tolueredi-isocyanate preparation

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0520377B1 (en) * 1991-06-26 1998-02-25 Lucky Ltd. A process for the selective preparation of 4,4-methylene-bis-(N-phenylalkylcarbamate)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3405040A (en) * 1965-08-31 1968-10-08 Mobay Chemical Corp Method for recovering tolylene diisocyanate
US3457291A (en) * 1965-04-01 1969-07-22 Union Carbide Corp Production of isocyanates
FR2039628A5 (en) * 1969-03-17 1971-01-15 List Heinz
FR2103035A5 (en) * 1970-07-18 1972-04-07 Bayer Ag
US3694323A (en) * 1968-08-05 1972-09-26 Du Pont Separation of distillable isocyanates from their phosgenation masses

Patent Citations (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
FR2039628A5 (en) * 1969-03-17 1971-01-15 List Heinz
FR2103035A5 (en) * 1970-07-18 1972-04-07 Bayer Ag

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4216063A (en) * 1977-07-12 1980-08-05 Produits Chimiques Ugine Kuhlmann Process for recovery of toluene diisocyanate
DK154426B (en) * 1977-07-12 1988-11-14 Ugine Kuhlmann PROCEDURE FOR CONTINUOUS AND AUTOMATIC EXTRACTION OF TOLUENDIA ISOCYANATE FROM HEAVY BYPRODUCTS IN THE PREPARATION
EP0017972A1 (en) * 1979-04-19 1980-10-29 BASF Aktiengesellschaft Fluidised-bed recovery of tolylene diisocyanate and/or high boiling solvents from distillation residues of the production of tolylene diisocyanate
EP0115333A2 (en) * 1983-02-01 1984-08-08 Axel Johnson Engineering Ab Method and apparatus for separating water and solid particles from oils
EP0115333A3 (en) * 1983-02-01 1984-08-22 Axel Johnson Engineering Ab Method and apparatus for separating water and solid particles from oils
EP0269218A1 (en) * 1986-10-20 1988-06-01 Chematur Aktiebolag Method for the recovery of isocyanates
EP0528299A2 (en) * 1991-08-20 1993-02-24 Bayer Ag Method of recovery of polyisocyanates from distillation residues of tolueredi-isocyanate preparation
EP0528299A3 (en) * 1991-08-20 1993-05-05 Bayer Ag Method of recovery of polyisocyanates from distillation residues of tolueredi-isocyanate preparation

Also Published As

Publication number Publication date
SU983124A1 (en) 1982-12-23
FR2320938B1 (en) 1980-05-30
GB1520055A (en) 1978-08-02
DD130143B1 (en) 1979-12-27
DD130143A1 (en) 1978-03-08

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Legal Events

Date Code Title Description
ST Notification of lapse