Method for preparing hexamethylcyclotrisilazane

Details Method for preparing hexamethylcyclotrisilazane Method for preparing hexamethylcyclotrisilazane

1992-08-21

1993-09-14

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

C07F 710

Patent

active

052450660

ABSTRACT:
Hexamethylcyclotrisilazane is prepared by reacting dimethyldichlorosilane with ammonia at a temperature between -20.degree. C. and 20.degree. C. Preferably, ammonia is blown into dimethyldichlorosilane at the temperature, and the reaction mixture is washed with 20% or higher alkaline water within one hour from the end of reaction for removing ammonium chloride by dissolving it in the water. Then hexamethylcyclotrisilazane of high purity is prepared in high yields. The method can be scaled up for commercial manufacture.

REFERENCES:
patent: 2579416 (1951-12-01), Cheronis
patent: 3481964 (1969-12-01), Ismail et al.
patent: 4577039 (1986-03-01), Arkles et al.
patent: 4855469 (1989-08-01), Baile et al.
patent: 5075474 (1990-12-01), Ohsaki et al.

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