Process for concurrent preparation of organosiloxanes and methyl

Details Process for concurrent preparation of organosiloxanes and methyl Process for concurrent preparation of organosiloxanes and methyl

1981-11-18

1982-12-28

Shaver, Paul F.

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

Organic compounds

Silicon containing

556450, 556459, 556461, 570261, C07F 708

Patent

active

043663249

ABSTRACT:
The invention provides a novel continuous process for concurrently producing methyl chloride and organosiloxanes by the reaction of an organochlorosilane and methyl alcohol in an aqueous reaction medium at 70.degree. to 150.degree. C. Different from conventional processes, the aqueous reaction medium contains no catalyst so that the problems inherent to the use of a large amount of a catalyst can be avoided. In the inventive process, the feed rates of the reactants are controlled so as to keep the concentration of hydrogen chloride in the aqueous reaction medium not to exceed the azeotropic concentration thereof at the temperature and under the pressure of operation. These conditions are critical to reduce the loss of hydrogen chloride by dissipation into the gaseous phase resulting in a remarkably high yield of methyl chloride from the standpoint of both the conversion of chlorine content and the space-time yield of the reaction vessel. The inventive process is advantageous also in the excellent quality of the organosiloxane product and markedly decreased formation of dimethyl ether as an undesirable by-product.

REFERENCES:
patent: 2556897 (1951-06-01), Bidaud
patent: 3432538 (1969-03-01), Curry
patent: 3792071 (1974-02-01), Nitzsche et al.
patent: 3803195 (1974-04-01), Nitzsche et al.
patent: 4032557 (1977-06-01), Spork et al.
patent: 4060537 (1977-11-01), Maass et al.
patent: 4108882 (1978-08-01), Mahone

Affiliated with

Also associated with

Rating

Process for concurrent preparation of organosiloxanes and methyl 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 concurrent preparation of organosiloxanes and methyl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for concurrent preparation of organosiloxanes and methyl will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1338258