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JPS57165358A - Continuous preparaion of organic isocyanate - Google Patents

Continuous preparaion of organic isocyanate

Info

Publication number
JPS57165358A
JPS57165358A JP5121681A JP5121681A JPS57165358A JP S57165358 A JPS57165358 A JP S57165358A JP 5121681 A JP5121681 A JP 5121681A JP 5121681 A JP5121681 A JP 5121681A JP S57165358 A JPS57165358 A JP S57165358A
Authority
JP
Japan
Prior art keywords
amine
phosgene
circulation circuit
temperature
phosgenation
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
JP5121681A
Other languages
Japanese (ja)
Other versions
JPH0124783B2 (en
Inventor
Ryuichi Yamamoto
Akinobu Takagi
Masafumi Kataita
Kenji Kobata
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 JP5121681A priority Critical patent/JPS57165358A/en
Priority to US06/364,894 priority patent/US4422976A/en
Priority to DE3212510A priority patent/DE3212510A1/en
Priority to MX192184A priority patent/MX156500A/en
Priority to BR8201971A priority patent/BR8201971A/en
Priority to FR8206087A priority patent/FR2503146B1/en
Priority to GB8210299A priority patent/GB2097789B/en
Publication of JPS57165358A publication Critical patent/JPS57165358A/en
Publication of JPH0124783B2 publication Critical patent/JPH0124783B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To prepare the titled compound in large quantities, with a small-sized reactor, by reacting large excess phosgene with an organic primary amine in a tubular circulation circuit at a temperature to decompose a part of the intermediate, and completing the decomposition of the intermediate in the second stage reactor at higher temperature, thereby carrying out the phosgenation.
CONSTITUTION: A large excess phosgene is supplied through the phosgene-feed pipe 3 to the tubular circulation circuit 1 in the presence of an inert organic solvent. At the same time, an organic primary amine is supplied to said circulation circuit 1 through the amine-feed pipe 2, and both raw materials are circulated under a pressure of ≤10kg/cm2G at 60W100°C which is the temperature to decompose 30W70% of carbamoyl chloride produced as an intermediate. The amine (hydrochloride) is phosgenated during the circulation. The reaction mixture is then transferred through the pipe 6 to the second stage reactor maintained at 120W160°C and ≤10kg/cm2G pressure to complete the phosgenation of the unreacted amine and the decomposition of the intermediate optionally by introducing additional phosgene. After the completion of the reaction, the mixture is flashed in a flash tank 12 and degassed to obtain the objective compound.
COPYRIGHT: (C)1982,JPO&Japio
JP5121681A 1981-04-07 1981-04-07 Continuous preparaion of organic isocyanate Granted JPS57165358A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP5121681A JPS57165358A (en) 1981-04-07 1981-04-07 Continuous preparaion of organic isocyanate
US06/364,894 US4422976A (en) 1981-04-07 1982-04-02 Continuous preparation of organic isocyanates
DE3212510A DE3212510A1 (en) 1981-04-07 1982-04-03 METHOD FOR THE CONTINUOUS PRODUCTION OF ORGANIC ISOCYANATES
MX192184A MX156500A (en) 1981-04-07 1982-04-06 CONTINUOUS PROCEDURE FOR THE PREPARATION OF ORGANIC ISOCYANATES
BR8201971A BR8201971A (en) 1981-04-07 1982-04-06 PROCESS TO PREPARE AN ORGANIC ISOCIANATE CONTINUOUSLY
FR8206087A FR2503146B1 (en) 1981-04-07 1982-04-07 PROCESS FOR THE CONTINUOUS PREPARATION OF ORGANIC ISOCYANATES
GB8210299A GB2097789B (en) 1981-04-07 1982-04-07 Preparation of organic isocyanates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5121681A JPS57165358A (en) 1981-04-07 1981-04-07 Continuous preparaion of organic isocyanate

Publications (2)

Publication Number Publication Date
JPS57165358A true JPS57165358A (en) 1982-10-12
JPH0124783B2 JPH0124783B2 (en) 1989-05-15

Family

ID=12880717

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5121681A Granted JPS57165358A (en) 1981-04-07 1981-04-07 Continuous preparaion of organic isocyanate

Country Status (1)

Country Link
JP (1) JPS57165358A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006109576A1 (en) * 2005-04-05 2006-10-19 Mitsui Chemicals Polyurethanes, Inc. Apparatus for continuously producing polyisocyanate
JP2018519320A (en) * 2015-06-29 2018-07-19 コベストロ、ドイチュラント、アクチエンゲゼルシャフトＣｏｖｅｓｔｒｏ Ｄｅｕｔｓｃｈｌａｎｄ Ａｇ Polyisocyanate production method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS516126A (en) * 1974-07-04 1976-01-19 Kobe Steel Ltd Chukuseikeihinno seikeihoho oyobi sonosochi
JPS5356635A (en) * 1976-11-01 1978-05-23 Allied Chem Method of and apparatus for producing aromatic isocyanate

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS516126A (en) * 1974-07-04 1976-01-19 Kobe Steel Ltd Chukuseikeihinno seikeihoho oyobi sonosochi
JPS5356635A (en) * 1976-11-01 1978-05-23 Allied Chem Method of and apparatus for producing aromatic isocyanate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006109576A1 (en) * 2005-04-05 2006-10-19 Mitsui Chemicals Polyurethanes, Inc. Apparatus for continuously producing polyisocyanate
US7767160B2 (en) 2005-04-05 2010-08-03 Mitsui Chemicals, Inc. Apparatus for continuously producing polyisocyanate
JP2018519320A (en) * 2015-06-29 2018-07-19 コベストロ、ドイチュラント、アクチエンゲゼルシャフトＣｏｖｅｓｔｒｏ Ｄｅｕｔｓｃｈｌａｎｄ Ａｇ Polyisocyanate production method

Also Published As

Publication number Publication date
JPH0124783B2 (en) 1989-05-15

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