C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
260/452, 260/469
C07D 307/86 (2006.01) A01N 47/10 (2006.01) C07C 263/12 (2006.01) C07C 269/02 (2006.01) C07C 271/12 (2006.01) C07D 307/78 (2006.01) C07D 307/84 (2006.01) C07D 317/18 (2006.01) C07D 317/24 (2006.01) C07D 317/64 (2006.01)
Patent
CA 1247113
TITLE PROCESS FOR THE PREPARATION OF METHYL CARBAMATES Abstract of the Disclosure A continuous, close-coupled method for making N-methyl carbamate pesticides which comprises con- tacting the methyl isocyanate in a vapor phase mix- ture containing methyl isocyanate and water with a selected oxime or phenol, said mixture being the reaction product formed by oxidizing monomethylform- amide. An optional intermediate step for preparing the methyl isocyanate/water vapor phase reaction mix- ture for contact with the oxime or phenol is to remove therefrom a portion of the water without liquefying the methyl isocyanate by cooling the mixture to a temperature below the dew point of water but above the dew point of the methyl isocyanate.
507229
Blaisdell Charles T.
Cordes Walter J.
Heinsohn George E.
Kook John F.
Kosak John R.
E. I. Du Pont de Nemours And Company
Mccallum Brooks & Co.
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