METHOD FOR PRODUCTION OF HEXAMETHYLDISILAZANE Russian patent published in 1997 - IPC

Abstract RU 2079500 C1

FIELD: chemistry of organosilicium compounds. SUBSTANCE: method is carried out by ammonolysis of trimethylchlorosilane, the process is carried out at negative temperature (-5-10 C is preferable) in organic solvent. The process is followed by saturation of reaction mass by ammonium which takes place at the same temperature, molar ratio of ammonium and trimethylchlorosilane being 1.55-2.0:1. Thus obtained ammonium chloride as crystals having size 30-50 μм are separated by filtration. Desired product is isolated of filtrate by commonly used methods. EFFECT: decreased waste, simplified separation of desired product against side product of the reaction. 3 cl, 1 tbl

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RU 2 079 500 C1

Authors

Matveev L.G.

Natejkina L.I.

Kozlov A.I.

Pol'Kin N.M.

Alksandrychev M.A.

Shkuro V.G.

Dates

1997-05-20—Published

1995-05-10—Filed