GB1152877A - Process for the manufacture of Organic Isocyanates - Google Patents

Process for the manufacture of Organic Isocyanates

Info

Publication number
GB1152877A
GB1152877A GB5379866A GB5379866A GB1152877A GB 1152877 A GB1152877 A GB 1152877A GB 5379866 A GB5379866 A GB 5379866A GB 5379866 A GB5379866 A GB 5379866A GB 1152877 A GB1152877 A GB 1152877A
Authority
GB
United Kingdom
Prior art keywords
isocyanate
isocyanates
isocyanatomethyl
pyran
dihydro
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.)
Expired
Application number
GB5379866A
Inventor
Edward George Gazzard
James Nairn Greenshields
John Maddison Philipson
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB5379866A priority Critical patent/GB1152877A/en
Publication of GB1152877A publication Critical patent/GB1152877A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D309/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings
    • C07D309/16—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
    • C07D309/20—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only ring hetero atom, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with hydrogen atoms and substituted hydrocarbon radicals directly attached to ring carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/10—Preparation of derivatives of isocyanic acid by reaction of amines with carbonyl halides, e.g. with phosgene
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C263/00—Preparation of derivatives of isocyanic acid
    • C07C263/18—Separation; Purification; Stabilisation; Use of additives
    • C07C263/20—Separation; Purification

Landscapes

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

Abstract

1,152,877. Preparation of isocyanates. IMPERIAL CHEMICAL INDUSTRIES Ltd. 24 Nov., 1967 [1 Dec., 1966], No. 53798/66. Heading C2C. Organic isocyanates are prepared by contacting together in the presence of an acid acceptor, a solution of phosgene in an inert organic solvent and a solution or dispersion of an organic primary amine in water, separating the liquid non-aqueous phase and recovering the isocyanate therefrom. The reaction is preferably carried out with mechanical agitation. In examples, the acid acceptor is sodium or calcium hydroxide, the inert organic solvent is toluene, o-xylene, n-hexane, methylene dichloride or petroleum ether and hexamethylene diisocyanate, ethyl isocyanate, phenyl isocyanate, p-phenylene diisocyanate, butyl isocyanate, allyl isocyanate, 2 - isocyanatomethyl - 3,4- dihydro - 2H - pyran and 2 - isocyanatomethyl- 2,5 - dimethyl - 3,4 - dihydro - 2H - pyran are prepared.
GB5379866A 1966-12-01 1966-12-01 Process for the manufacture of Organic Isocyanates Expired GB1152877A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5379866A GB1152877A (en) 1966-12-01 1966-12-01 Process for the manufacture of Organic Isocyanates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5379866A GB1152877A (en) 1966-12-01 1966-12-01 Process for the manufacture of Organic Isocyanates

Publications (1)

Publication Number Publication Date
GB1152877A true GB1152877A (en) 1969-05-21

Family

ID=10469015

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5379866A Expired GB1152877A (en) 1966-12-01 1966-12-01 Process for the manufacture of Organic Isocyanates

Country Status (1)

Country Link
GB (1) GB1152877A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2406627A1 (en) * 1977-10-20 1979-05-18 Poudres & Explosifs Ste Nale Alkyl isocyanate cpds. from alkyl carbamyl chloride cpds. - at low temp. in presence of aq. alkali

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2406627A1 (en) * 1977-10-20 1979-05-18 Poudres & Explosifs Ste Nale Alkyl isocyanate cpds. from alkyl carbamyl chloride cpds. - at low temp. in presence of aq. alkali

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee