Preparation of substituted chloramines

Claim 1

AN ANHYDROUS PROCESS FOR PREPARING SUBSTITUTED HYDRAZINE WHICH COMPRISES CONTACTING THE VAPOR OF AN AMINE, SELECTED FROM THE GROUP CONSISTING OF LOWER ALKYL, PRIMARY AND SECONDARY AMINES WITH CHLORINE GAS IN A MOLAR RATIO OF AMINE TO CHLORINE GREATER THAN 5:1 AT A TEMPERATURE SUFFICENTLY HIGH TO PREVENT FORMATION OF A LIQUID PHASE, WHEREBY A SOILID HYDROCHLORIDE OF SAID AMINE AND A LOWER ALKYL SUBSTITUTED CHLORAMINE IS FORMED, SEPARATING SAID SOLID AMINE HYDROCHLORIDE FROM THE GASEOUS REACTION MIXTURE, SUBSEQUENTLY CONDENSING AND COLLECTING THE SUBSTITUTED CHLORAMINE THUS FORMED AN EXCESS AMINE, REACTING THE LIQUID SUDSTITUTED CHLORAMINE WITH AN EXCESS OF A LIQUID NITROGEN-CONTAINING COMPOUND SELECTED FROM THE GROUP CONSISTING OF AMMONIA AND LOWER ALKYL PRIMARY AND SECONDARY AMINES, THE CONCENTRATION OF SUBSTITUTED CHLORAMINE IN THE LIQUID REACTION MIXTURE BEING LESS THAN ABOUT 1 MOL PER LITER, UNDER SUFFICIENT PRESSURE TO MAINTAIN THE REACTANTS IN LIQUID PHASE, AND SUBSEQUENTLY SEPARATING SUBSTITUTED HYDRAZINE FROM THE REACTION MIXTURE.