Process for treating spent silicon-containing reaction masses to

Details Process for treating spent silicon-containing reaction masses to Process for treating spent silicon-containing reaction masses to

1982-02-16

1983-06-28

Shaver, Paul F.

Chemistry of inorganic compounds

Silicon or compound thereof

Halogen containing

C01B 3308

Patent

active

043905102

ABSTRACT:
Improved yields of monohydrogentrihalosilanes are achieved by contacting the residual silicon obtained from the preparation of organohalosilanes by a metal-catalyzed direct process by contacting the residual silicon simultaneously with gaseous hydrogen halide and with gaseous alkyl halide to form a residual silicon contact mass; selecting a temperature between about 200.degree. C. and about 350.degree. C. at which alkylation of the silicon contact mass in inhibited and at which hydrohalogenation of the silicon contact mass occurs; and heating the silicon contact mass at the selected temperature. The silicon reacts with the gaseous alkyl halide and the gaseous hydrogen halide at the selected temperature to produce improved yields of the monohydrogentrihalosilane. In preferred embodiments, monohydrogentrichlorosilane is produced by reacting residual silicon with hydrogen chloride and methyl chloride at a temperature less than the temperature at which a predominantly alkylation reaction occurs with the residual contact mass so that there is sufficient hydrohalogenation to form the monohydrogentrichlorosilane.

REFERENCES:
patent: 2380995 (1945-08-01), Rochow
patent: 2380999 (1945-08-01), Sprung et al.
patent: 2389931 (1945-11-01), Reed et al.
patent: 2447873 (1948-08-01), Rochow
patent: 2449821 (1948-09-01), Sellers et al.
patent: 2488487 (1949-11-01), Barry et al.
patent: 2803521 (1957-08-01), Nitzsche et al.
patent: 2943918 (1960-07-01), Pauls
patent: 3012861 (1961-12-01), Ling
patent: 3133109 (1964-05-01), Dotson
patent: 4165363 (1979-08-01), Weigert et al.
patent: 4207360 (1980-06-01), Padovani
patent: 4217334 (1980-08-01), Weigert et al.
patent: 4224297 (1980-09-01), Straussberger et al.
patent: 4281149 (1981-07-01), Shade
patent: 4307242 (1981-12-01), Shah et al.
R. J. H. Voorhoeve, Organohalosilanes, Precursors to Silicones, Elsevier, 1967, pp. 137-139.

Affiliated with

Also associated with

Rating

Process for treating spent silicon-containing reaction masses to does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for treating spent silicon-containing reaction masses to, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for treating spent silicon-containing reaction masses to will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-933198