Organic compounds -- part of the class 532-570 series – Organic compounds – Silicon containing
Patent
1985-07-08
1986-09-02
Shaver, Paul F.
Organic compounds -- part of the class 532-570 series
Organic compounds
Silicon containing
C07F 708, C07F 718
Patent
active
046097520
ABSTRACT:
A continuous process for the preparation of alkoxypolysiloxane in which silane or a silane mixture and a mixture of hydrogen chloride-containing alcohol and water is fed continuously into the lower region of preferably cylindrical stirred reactor, the reaction product formed together with excess hydrogen chloride-containing alcohol is drawn off continuously after residence time of 30 to 180 minutes at the upper end of the reactor and the undissolved, gaseous portion of hydrogen chloride is carried off at the head of the reactor, the temperature of the reaction mixture or the reaction product, as it flows through the reactor, being raised from a range of -17.degree. to +30.degree. C. to range of +30.degree. to +80.degree. C., the temperature gradient having to be at least 10.degree. C., and the excess alcohol and dissolved hydrogen chloride being removed outside of the reactor in a known manner from the reaction product formed, and the hydrogen chloride-containing alcohol obtained while working up to reaction product being recycled to the reactor. The invention furthermore relates to an apparatus which is particularly suitable for implementing the process.
REFERENCES:
patent: 2415389 (1947-02-01), Hunter et al.
patent: 3260699 (1966-07-01), Schmidt
Giesing Herbert
Koerner Gotz
Kropac Vaclay
Patzke Hans-Jurgen
Quilitsch Herbert
Shaver Paul F.
Th. Goldschmidt Ag
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