Method of making a halosiloxane
AssigneeDow Silicones Corporation
InventorsNoel Mower Chang, Barry Ketola, Andrew Millward, Xiaobing Zhou
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Abstract
A method of producing a halosiloxane, the method comprising: i) combining water, a halosilane, and a first solvent to form a reaction mixture, ii) partially hydrolyzing and condensing the halosilane to form a reaction product mixture comprising the halosiloxane, the solvent, unreacted halosilane, and hydrogen halide, iii) adding a second solvent, where the second solvent has a boiling point the boiling point of the halosiloxane, to the reaction mixture in i) or to the reaction product mixture in ii), and iv) recovering the halosiloxane from the reaction product mixture.
Claims11
A method of producing a halosiloxane, the method comprising:
- i) combining water, a halosilane, and a first solvent to form a reaction mixture,
- ii) partially hydrolyzing and condensing the halosilane to form a reaction product mixture comprising the halosiloxane, the solvent, unreacted halosilane, and hydrogen halide,
- iii) adding a second solvent, where the second solvent has a boiling point≥the boiling point of the halosiloxane, to the reaction mixture in i), to the reaction product mixture in ii), or to the reaction mixture in i) and the reaction product mixture in ii), and
- iv) recovering the halosiloxane from the reaction product mixture;
- wherein the halosiloxane is a halodisiloxane.
Dependencies are inferred from the claim text.