Continuous process for the production of methomyl

Details Continuous process for the production of methomyl Continuous process for the production of methomyl

B - Operations, Transporting

01

J

260/452

B01J 19/24 (2006.01)

Patent

CA 1216304

- 13 - ABSTRACT OF THE DISCLOSURE Disclosed is a continuous process for the production of methomyl comprising the steps of: continuously forming, in an inert organic solvent and at an elevated reaction-initiating temperature of from about 30-70°C, a liquid mixture of methylthloacetaldoxime and with methyl isocyanate in an amount in excess of stoichiometric proportions ; passing the mixture through a plug-flow, adiabatic, tubular reactor, maintained at a pressure of from about 30 to 70 psig, to produce reaction product at a temperature up to a reactor discharge temperature of from about 80 to 120°C; and withdrawing the reaction product from the reactor and stripping unreacted methyl isocyanate and solvent therefrom to provide product methomyl, while recycling at least a portion of the unreacted isocyanate and solvent to the mixture. S P E C I F I C A T I O N

449567

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