FR2406627A1 - Procede de fabrication d'isocyanates d'alkyle - Google Patents

Procede de fabrication d'isocyanates d'alkyle

Info

Publication number
FR2406627A1
FR2406627A1 FR7731612A FR7731612A FR2406627A1 FR 2406627 A1 FR2406627 A1 FR 2406627A1 FR 7731612 A FR7731612 A FR 7731612A FR 7731612 A FR7731612 A FR 7731612A FR 2406627 A1 FR2406627 A1 FR 2406627A1
Authority
FR
France
Prior art keywords
cpds
alkyl
alkali
low temp
carbamyl 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.)
Granted
Application number
FR7731612A
Other languages
English (en)
Other versions
FR2406627B1 (fr
Inventor
Julien Deweerdt
Denis Souyri
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.)
Societe Nationale des Poudres et Explosifs
Original Assignee
Societe Nationale des Poudres et Explosifs
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 Societe Nationale des Poudres et Explosifs filed Critical Societe Nationale des Poudres et Explosifs
Priority to FR7731612A priority Critical patent/FR2406627A1/fr
Publication of FR2406627A1 publication Critical patent/FR2406627A1/fr
Application granted granted Critical
Publication of FR2406627B1 publication Critical patent/FR2406627B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/04—Preparation of derivatives of isocyanic acid from or via carbamates or carbamoyl halides

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

L'invention concerne un procédé de fabrication d'isocyanates d'alkyle comportant au moins 3 atomes de carbone. Selon l'invention on décompose le chlorure de N-alkyle carbamyle correspondant entre - 20 et + 15 degrés C, de préférence entre -10 et + 5 degrés C, en la seule présence d'une solution aqueuse de base minérale et d'une agitation modérée. De préférence on utilise de la soude ou de la potasse en excès de 5 à 15 % par rapport à la stoechiométrie. On évite notamment le séchage de l'isocyanate formé et la purification de ce dernier est simplifiée. Application : fabrication d'isocyanates d'alkyle utiles comme intermédiaires de synthèse.
FR7731612A 1977-10-20 1977-10-20 Procede de fabrication d'isocyanates d'alkyle Granted FR2406627A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7731612A FR2406627A1 (fr) 1977-10-20 1977-10-20 Procede de fabrication d'isocyanates d'alkyle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7731612A FR2406627A1 (fr) 1977-10-20 1977-10-20 Procede de fabrication d'isocyanates d'alkyle

Publications (2)

Publication Number Publication Date
FR2406627A1 true FR2406627A1 (fr) 1979-05-18
FR2406627B1 FR2406627B1 (fr) 1980-04-25

Family

ID=9196742

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7731612A Granted FR2406627A1 (fr) 1977-10-20 1977-10-20 Procede de fabrication d'isocyanates d'alkyle

Country Status (1)

Country Link
FR (1) FR2406627A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1152877A (en) * 1966-12-01 1969-05-21 Ici Ltd Process for the manufacture of Organic Isocyanates
FR2003746A1 (fr) * 1968-03-12 1969-11-14 Bayer Ag
US3644461A (en) * 1969-02-19 1972-02-22 Ott Chemical Co Preparation of alkyl isocyanates
FR2161655A5 (fr) * 1971-11-16 1973-07-06 Basf Ag
US3862201A (en) * 1970-04-30 1975-01-21 Koenig Karl Heinz Production of 1-alkenyl isocyanates
DE2461963A1 (de) * 1974-12-31 1976-07-08 Basf Ag Verfahren zur herstellung von 1-alkenylisocyanaten

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1152877A (en) * 1966-12-01 1969-05-21 Ici Ltd Process for the manufacture of Organic Isocyanates
FR2003746A1 (fr) * 1968-03-12 1969-11-14 Bayer Ag
US3644461A (en) * 1969-02-19 1972-02-22 Ott Chemical Co Preparation of alkyl isocyanates
US3862201A (en) * 1970-04-30 1975-01-21 Koenig Karl Heinz Production of 1-alkenyl isocyanates
FR2161655A5 (fr) * 1971-11-16 1973-07-06 Basf Ag
DE2461963A1 (de) * 1974-12-31 1976-07-08 Basf Ag Verfahren zur herstellung von 1-alkenylisocyanaten

Also Published As

Publication number Publication date
FR2406627B1 (fr) 1980-04-25

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Legal Events

Date Code Title Description
ST Notification of lapse