GB1192900A - Process for the Preparation of Isocyanates - Google Patents

Process for the Preparation of Isocyanates

Info

Publication number
GB1192900A
GB1192900A GB1806869A GB1806869A GB1192900A GB 1192900 A GB1192900 A GB 1192900A GB 1806869 A GB1806869 A GB 1806869A GB 1806869 A GB1806869 A GB 1806869A GB 1192900 A GB1192900 A GB 1192900A
Authority
GB
United Kingdom
Prior art keywords
acids
april
acyl isocyanates
formula
isocyanates
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
GB1806869A
Inventor
Hermann Hagemann
Dieter Arlt
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 DE19681768179 external-priority patent/DE1768179C3/en
Application filed by Bayer AG filed Critical Bayer AG
Publication of GB1192900A publication Critical patent/GB1192900A/en
Expired 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C265/00—Derivatives of isocyanic acid
    • C07C265/16—Derivatives of isocyanic acid having isocyanate groups acylated

Landscapes

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

Abstract

1,192,900. Acyl isocyanates. FARBENFABRIKEN BAYER A.G. 9 April, 1969 [10 April, 1968], No. 18068/69. Heading C2C. Acyl isocyanates of formula in which X is a halogen atom or a substituted or unsubstituted aralkyl, aryl, aryloxy, or saturated or unsaturated monovalent aliphatic hydrocarbon or hydrocarbonyloxy radical, are prepared by reacting, at a temperature of 10‹ to 150‹ C., an isocyanide dichloride of formula with an anhydrous strong acid which contains dissociable hydrogen atoms attached to oxygen atoms and has a pKa value up to 2, optionally in the presence of an inert solvent. Chlorocarbonyl isocyanate is claimed per se. Specified acids which may be used in the process are fluoro-, chloro-, methane-, benzene- and toluenesulphonic acids, trichloro- and trifluoro-acetic acids and dichloro-phosphoric acid. Specified values for X are chlorine, methyl, ethyl, bromomethyl, trifluoromethyl, benzyl, 4-nitrobenzyl, 4-chlorobenzyl, phenyl, 2-, 3- and 4-nitrophenyl, 2-, 3- and 4-chlorophenyl, 1,2-, 1,3- and 1,4-dichlorophenyl, 2- and 4-methylphenyl, methoxyphenyl, methoxy, ethoxy, propoxy and 2- chloroethoxy. The acyl isocyanates may be used as pesticides and as dehydrating agents in special syntheses.
GB1806869A 1968-04-10 1969-04-09 Process for the Preparation of Isocyanates Expired GB1192900A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19681768179 DE1768179C3 (en) 1968-04-10 Chlorocarbonyl isocyanate and process for making isocyanates

Publications (1)

Publication Number Publication Date
GB1192900A true GB1192900A (en) 1970-05-20

Family

ID=5699629

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1806869A Expired GB1192900A (en) 1968-04-10 1969-04-09 Process for the Preparation of Isocyanates

Country Status (5)

Country Link
BE (1) BE731350A (en)
CH (1) CH509271A (en)
FR (1) FR2006011A1 (en)
GB (1) GB1192900A (en)
NL (1) NL6905153A (en)

Also Published As

Publication number Publication date
FR2006011A1 (en) 1969-12-19
NL6905153A (en) 1969-10-14
DE1768179A1 (en) 1971-11-18
BE731350A (en) 1969-09-15
CH509271A (en) 1971-06-30
DE1768179B2 (en) 1975-12-18

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Legal Events

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