JPS52139043A - Recovery of toluylenediisocyanate - Google Patents

Recovery of toluylenediisocyanate

Info

Publication number
JPS52139043A
JPS52139043A JP3875776A JP3875776A JPS52139043A JP S52139043 A JPS52139043 A JP S52139043A JP 3875776 A JP3875776 A JP 3875776A JP 3875776 A JP3875776 A JP 3875776A JP S52139043 A JPS52139043 A JP S52139043A
Authority
JP
Japan
Prior art keywords
toluylenediisocyanate
recovery
tarry matter
diaminotoluene
phosgene
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.)
Pending
Application number
JP3875776A
Other languages
Japanese (ja)
Inventor
Shigeki Mori
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP3875776A priority Critical patent/JPS52139043A/en
Publication of JPS52139043A publication Critical patent/JPS52139043A/en
Pending legal-status Critical Current

Links

Landscapes

  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: The title compound is effectively recovered from tarry matter by-produced in the process for toluylenediisocyanate preparation by the reaction of diaminotoluene with phosgene, by the flash distillation of the tarry matter in a heat tube under vacuum, while the residue is discharged as a solid.
COPYRIGHT: (C)1977,JPO&Japio
JP3875776A 1976-04-08 1976-04-08 Recovery of toluylenediisocyanate Pending JPS52139043A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3875776A JPS52139043A (en) 1976-04-08 1976-04-08 Recovery of toluylenediisocyanate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3875776A JPS52139043A (en) 1976-04-08 1976-04-08 Recovery of toluylenediisocyanate

Publications (1)

Publication Number Publication Date
JPS52139043A true JPS52139043A (en) 1977-11-19

Family

ID=12534149

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3875776A Pending JPS52139043A (en) 1976-04-08 1976-04-08 Recovery of toluylenediisocyanate

Country Status (1)

Country Link
JP (1) JPS52139043A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55141456A (en) * 1979-04-19 1980-11-05 Basf Ag Method of obtaining toluylene diisocyanate and*or high boiling point solvent in fluidized bed from distillation residue of toluylene diisocyante manufacture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55141456A (en) * 1979-04-19 1980-11-05 Basf Ag Method of obtaining toluylene diisocyanate and*or high boiling point solvent in fluidized bed from distillation residue of toluylene diisocyante manufacture
JPH0236589B2 (en) * 1979-04-19 1990-08-17 Basf Ag

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