JPS54138518A - Preparation of organic isocyanate - Google Patents

Preparation of organic isocyanate

Info

Publication number
JPS54138518A
JPS54138518A JP4532978A JP4532978A JPS54138518A JP S54138518 A JPS54138518 A JP S54138518A JP 4532978 A JP4532978 A JP 4532978A JP 4532978 A JP4532978 A JP 4532978A JP S54138518 A JPS54138518 A JP S54138518A
Authority
JP
Japan
Prior art keywords
reaction
organic
organic isocyanate
react
hydrogen chloride
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
JP4532978A
Other languages
Japanese (ja)
Inventor
Ryuichi Yamamoto
Kosuke Yamamoto
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 JP4532978A priority Critical patent/JPS54138518A/en
Publication of JPS54138518A publication Critical patent/JPS54138518A/en
Pending legal-status Critical Current

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

Abstract

PURPOSE: To obtain a high quality organic isocyanate in high yield in a short time, by the phosgenation of an aminium hydrochloride, which is prepared by the reaction of an organic primary amine with hydrogen chloride, in the presence of an active carbon catalyst.
CONSTITUTION: An organic primary amine is dissolved in an inert organic solvent at a concentration of 5W30% and then made to react with at least 1 mol of hydrogen chloride to one amino group at 100W140°C to give an aminium hydrochloride. The compound obtained is made to react with excess (100W200%) phosgene at 100W 200°C, preferably 120W160°C in the presence of active carbon in a ratio of 0.1W10% to the amount of the amine to given an organic isocyanate. The reaction time is 1W6hr. The reactive carbon used in the reaction is filtered, recovered and reused.
COPYRIGHT: (C)1979,JPO&Japio
JP4532978A 1978-04-19 1978-04-19 Preparation of organic isocyanate Pending JPS54138518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4532978A JPS54138518A (en) 1978-04-19 1978-04-19 Preparation of organic isocyanate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4532978A JPS54138518A (en) 1978-04-19 1978-04-19 Preparation of organic isocyanate

Publications (1)

Publication Number Publication Date
JPS54138518A true JPS54138518A (en) 1979-10-27

Family

ID=12716266

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4532978A Pending JPS54138518A (en) 1978-04-19 1978-04-19 Preparation of organic isocyanate

Country Status (1)

Country Link
JP (1) JPS54138518A (en)

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