FR2360564A1 - Procede de preparation de mono-isocyanates aliphatiques a partir des chlorures d'acides carbamiques correspondants - Google Patents

Procede de preparation de mono-isocyanates aliphatiques a partir des chlorures d'acides carbamiques correspondants

Info

Publication number
FR2360564A1
FR2360564A1 FR7724272A FR7724272A FR2360564A1 FR 2360564 A1 FR2360564 A1 FR 2360564A1 FR 7724272 A FR7724272 A FR 7724272A FR 7724272 A FR7724272 A FR 7724272A FR 2360564 A1 FR2360564 A1 FR 2360564A1
Authority
FR
France
Prior art keywords
isocyanates
hydrogen atom
carbamic acid
active hydrogen
acid chlorides
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
FR7724272A
Other languages
English (en)
Other versions
FR2360564B1 (fr
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.)
Bayer AG
Original Assignee
Bayer AG
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
Priority claimed from DE19762635280 external-priority patent/DE2635280C2/de
Priority claimed from DE19772702051 external-priority patent/DE2702051C2/de
Application filed by Bayer AG filed Critical Bayer AG
Publication of FR2360564A1 publication Critical patent/FR2360564A1/fr
Application granted granted Critical
Publication of FR2360564B1 publication Critical patent/FR2360564B1/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

Selon l'invention on convertit la chlorures d'acides carbamiques en présence de solvants inertes, par réaction avec des composés portant au moins un atome d'hydrogène actif avec séparation du chlorure d'hydrogène, en composés d'addition des isocyanates correspondants qu'on décompose ensuite à la chaleur en l'isoyanate recherché et le composé portant au moins un atome d'hydrogène actif, en séparant simultanément par distillation le mono-isocyanate recherché et le composé portant un atome d'hydrogène actif qu'on récupère et qu'on réutilise. Les mono-isoyanates préparés par le procédé selon l'invention sont des produits de départ de la préparation de produits phytosanitaires et de médicaments.
FR7724272A 1976-08-05 1977-08-05 Procede de preparation de mono-isocyanates aliphatiques a partir des chlorures d'acides carbamiques correspondants Granted FR2360564A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19762635280 DE2635280C2 (de) 1976-08-05 1976-08-05 Verfahren zur Herstellung von aliphatischen Monoisocyanaten
DE19772702051 DE2702051C2 (de) 1977-01-19 1977-01-19 Verfahren zur Herstellung von aliphatischen Monoisocyanaten

Publications (2)

Publication Number Publication Date
FR2360564A1 true FR2360564A1 (fr) 1978-03-03
FR2360564B1 FR2360564B1 (fr) 1980-09-05

Family

ID=25770784

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7724272A Granted FR2360564A1 (fr) 1976-08-05 1977-08-05 Procede de preparation de mono-isocyanates aliphatiques a partir des chlorures d'acides carbamiques correspondants

Country Status (8)

Country Link
US (1) US4146550A (fr)
JP (1) JPS5321118A (fr)
BR (1) BR7705166A (fr)
CA (1) CA1096393A (fr)
CH (1) CH629754A5 (fr)
FR (1) FR2360564A1 (fr)
GB (1) GB1557087A (fr)
IT (1) IT1079912B (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4285876A (en) * 1979-10-10 1981-08-25 Vertac, Inc. Isocyanate adducts with β-diketones
US4310688A (en) * 1979-10-22 1982-01-12 The Dow Chemical Company Reduction of hydrolyzable chloride impurities in an isocyanatoalkyl ester of an organic carboxylic acid
US4391758A (en) * 1982-04-19 1983-07-05 Spaziante Placido M Process for methyl isocyanate production

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1817017A1 (de) * 1967-12-28 1969-08-14 Takeda Chemical Industries Ltd Stabilisierte Isocyanate
DE1593554A1 (de) * 1965-09-15 1970-09-03 Stauffer Chemical Co Verfahren zur Herstellung organischer Isocyanate
GB1208862A (en) * 1966-12-05 1970-10-14 Ici Ltd Manufacture of organic isocyanates
US3644461A (en) * 1969-02-19 1972-02-22 Ott Chemical Co Preparation of alkyl isocyanates
DE2156761A1 (de) * 1971-11-16 1973-06-07 Basf Ag Verfahren zur herstellung von isocyanaten
DE2210285A1 (de) * 1972-03-03 1973-09-06 Basf Ag Verfahren zur herstellung von isocyanaten

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2773086A (en) * 1953-01-19 1956-12-04 Monsanto Chemicals Production of isocyanates from substituted ureas
US3410887A (en) * 1965-01-29 1968-11-12 Upjohn Co Process for preparing aliphatic isocyanates
DE2512514C2 (de) * 1975-03-21 1982-12-30 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von aliphatischen Isocyanaten

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1593554A1 (de) * 1965-09-15 1970-09-03 Stauffer Chemical Co Verfahren zur Herstellung organischer Isocyanate
GB1208862A (en) * 1966-12-05 1970-10-14 Ici Ltd Manufacture of organic isocyanates
DE1817017A1 (de) * 1967-12-28 1969-08-14 Takeda Chemical Industries Ltd Stabilisierte Isocyanate
US3644461A (en) * 1969-02-19 1972-02-22 Ott Chemical Co Preparation of alkyl isocyanates
DE2156761A1 (de) * 1971-11-16 1973-06-07 Basf Ag Verfahren zur herstellung von isocyanaten
DE2210285A1 (de) * 1972-03-03 1973-09-06 Basf Ag Verfahren zur herstellung von isocyanaten

Also Published As

Publication number Publication date
JPS5321118A (en) 1978-02-27
IT1079912B (it) 1985-05-13
GB1557087A (en) 1979-12-05
CH629754A5 (de) 1982-05-14
US4146550A (en) 1979-03-27
FR2360564B1 (fr) 1980-09-05
BR7705166A (pt) 1978-04-25
CA1096393A (fr) 1981-02-24

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Legal Events

Date Code Title Description
ST Notification of lapse