JPS52139043A - Recovery of toluylenediisocyanate - Google Patents
Recovery of toluylenediisocyanateInfo
- 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
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
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)
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 |
-
1976
- 1976-04-08 JP JP3875776A patent/JPS52139043A/en active Pending
Cited By (2)
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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