Dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride CAS 27668-52-6

Take by weighing γ-chloropropyl trimethoxysilane (2.782 kilograms, 14 moles) and join in the 150 liters of reactors with condensation and reflux device, after the closed reactor, open the reactor heating mechanism, at 40-80 rpm When the reaction kettle was heated to 40-50 ° C under the stirring speed of /min, began to drip octadecyldimethyl tertiary amine (2.976 kilograms, 10 moles) in the reaction kettle, and the dropping time was 3 hours; At 140°C, keep the constant temperature, react in a closed and mixed solvent reflux state for 36 hours to obtain an organosilicon quaternary ammonium salt product solution, and stop the reaction heating when the conversion rate of the organosilicon quaternary ammonium salt is determined to be 93% by nuclear magnetic resonance method.