Process for reducing dithiocarbazinate buildup in the preparation of methyl dithiocarbazinate
AssigneeBayer Aktiengesellschaft
InventorDavid M. Mayes
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Abstract
Disclosed herein is an improved process for preparing methyl dithiocarbazinate by reacting carbon disulfide and hydrazine in an effective ratio to form hydrazinium dithiocarbazinate, followed by methylating the hydrazinium dithiocarbazinate with methyl bromide. The improvement resides in conducting the reaction of the carbon disulfide and hydrazine in the presence of a specified amount of a non-alcoholic solvent to reduce dithiocarbazinate buildup.
Claims6
In a process for the manufacture of methyl dithiocarbazinate comprising reacting carbon disulfide and hydrazine to form hydrazinium dithiocarbazinate and methylating said hydrazinium dithiocarbazinate with methyl bromide;
- the improvement wherein the reaction of said carbon disulfide and hydrazine is conducted in the presence of a non-alcoholic solvent to reduce dithiocarbazinate buildup, the molar ratio of said solvent to carbon disulfide being from about 0.4:1 to about 3:1.
Dependencies are inferred from the claim text.