Preparation of polysiloxanes from halosilanes

Details Preparation of polysiloxanes from halosilanes Preparation of polysiloxanes from halosilanes

1985-06-14

1986-03-25

Shaver, Paul F.

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

Organic compounds

Silicon containing

556460, 556461, 528 14, 528 15, 528 16, 528 17, 528 18, C07F 708, C07F 718

Patent

active

045784949

ABSTRACT:
This invention relates to a process for the preparation of polysiloxanes by reacting halosilanes in the presence of metal oxides and sulfolane. Preferred metal oxides include antimony (III) oxide, antimony (V) oxide, cadmium oxide, calcium oxide, copper (II) oxide, indium oxide, iron (II) oxide, iron (III) oxide, magnesium oxide, manganese (II) oxide, mercury (II) oxide, nickel (II) oxide, thallium (III) oxide, tin (II) oxide, and zinc oxide. Improved yields and rates of reaction can be observed with the process of this invention.

REFERENCES:
patent: 3021297 (1962-02-01), George
patent: 3235579 (1966-02-01), Brown et al.
patent: 3398173 (1968-08-01), Goosens
patent: 3687642 (1972-08-01), Koerner et al.
patent: 4073801 (1978-02-01), Moretto et al.
patent: 4161487 (1979-07-01), Borner et al.
patent: 4276425 (1981-06-01), Burkhardt et al.
patent: 4382145 (1983-05-01), Yeboah

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