Process for preparing hexamethylcyclotrisilazane

Details Process for preparing hexamethylcyclotrisilazane Process for preparing hexamethylcyclotrisilazane

1994-10-28

1995-11-14

Shaver, Paul F.

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

Organic compounds

Silicon containing

C07F 710

Patent

active

054668476

ABSTRACT:
A process for preparing hexamethylcyclo-trisilazane by heating octamethylcyclotetra-silazane in the presence of a catalyst such as a Lewis acid or a sulfur compound of the following formula ##STR1## wherein M represents Ca, Mg, Al, Fe or NH.sub.4, R represents OH, a phenyl group or a substituted phenyl group, x is 0, 1 or 2 and y is 0, 1, 2 or 3 provided that x and y are not zero at the same time, and z is 0, 1, 2 or 3.

REFERENCES:
patent: 4577039 (1986-03-01), Arkles et al.
patent: 4855469 (1989-08-01), Baile et al.
patent: 5075474 (1991-12-01), Ohsaki et al.
patent: 5084423 (1992-01-01), Vaahs et al.
patent: 5245066 (1993-09-01), Shinohara et al.

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