Method of cleaving organosiloxanes

Details Method of cleaving organosiloxanes Method of cleaving organosiloxanes

1982-12-03

1983-11-22

Shaver, Paul F.

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

Organic compounds

Silicon containing

C07F 708, C07F 712

Patent

active

044170670

ABSTRACT:
The present invention relates to the cleavage of organosiloxanes with hydrogen chloride with the formation of organochlorosilanes. In accordance with the invention, this cleavage is performed at temperatures below 20.degree. C., and the dihydrates and trihydrates of the hydrogen chloride are formed. These settle as the specifically heavier, liquid phase and thus can easily be separated from the organochlorosilanes. The preferred temperature range in which the procedure of the invention is performed is between +10.degree. C. and -10.degree. C., while yields of as much as 99% of the desired organochlorosilane are obtained. The process can also be performed continuously.
The inventive process is particularly useful because it can be used to convert contaminated organosiloxanes, such as used heat exchange or hydraulic oil materials, into useful products.

REFERENCES:
patent: 2500761 (1950-03-01), Leuis
patent: 2615034 (1952-10-01), Hyde
patent: 2897220 (1959-07-01), Jenkner

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