Process of preparing zinc containing fungicides

Claim 1

A PROCESS FOR MAKING A FUNGICIDAL PRODUCT, WHICH COMPRISES PREPARING AN AQUEOUS SOLUTION OF A MIXTURE OF EHTYLENEDIAMINE AND POLYETHYLENEPOLYAMINES HYDROCHLORIDES CONTAINING 65-80% ETHYLENEDIAMINE HYDROCHLORIDE, 19-29% DIETHYLENETRIAMINE HYDROCHLORIDE, 1-4% TRIETHYLENETRAMINE HYDROCHLORIDE, AND UP TO 2% HIGHER POLYETHYLENEPOLYAMINES HYDROCHLORIDES AS OBTAINED FROM THE REACTION BETWEEN DICHLORJOETHANE AND AMMONIA, ADDING AT ROOM TEMPERATURE AN AMOUNT OF CAUSTIC SODA IN AQUEOUS SOLUTION SUFFICIENT TO LIBERATE THE AMINES FROM THE HYDROCHLORIDES AND TO NEUTRALIZE SUBSEQUENTLY FORMED DITHIOCARBAMIC ACIDS, TREATING THE ALKALINE SOLUTION AT 20-35 C. WITH AN AMOUNT OF CARBON DISULFIDE STIOCHIOMETRICALLY EQUIVALENT TO THE AMINE NITROGEN PRESNET TO FORM SAID DITHIOCARBAMIC ACIDS, ADDING DILUTED HYDROCHLORIC ACID UNTIL THE SOLUTION IS NEUTRAL AGAINST PHENOLPHTHALEIN, AND PRECIPITATIING THE FUNGICIDAL PRODUCT BY ADDING AT ROOM TEMPERATURE, WHILE STIRRING, A 1-2% EXCESS OVER THE STIOCHIOMETRIC AMOUNT OF AN ABOUT 60% AQUEOUS SOLUTION OF AN INORGANIC ZINC SALT TAKEN FROM THE GROUP CONSISTING OF ZINC CHLORIDE AND ZINC SULFATE.