Method for preparing chlorosilane
AssigneeGE Bayer Silicones GmbH & Co. KG
InventorsRoland Wagner, Ralf Maecker, Hubertus Eversheim, Horst Lange
Life of this patent
Estimating the term…
Abstract
The invention relates to a process for manufacturing chlorosilanes, in which methyl-rich disilane, polysilane and siloxane residues from the Müller-Rochow synthesis or a chlorosilane synthesis are reduced in quantity. It comprises the steps: a) reaction of silicon with alkyl halogenides, aryl halogenides or hydrogen chloride, b) reaction of at least one high-boiling product fraction from step a) with at least one halogenide and c) reaction of at least one high-boiling product fraction resulting from step b) with alkyl halogenides, aryl halogenides and/or chlorosilanes.
Claims27
Process for manufacturing chlorosilanes, comprising the steps of:
- a) reacting silicon with alkyl halogenides, aryl halogenides or hydrogen chloride,
- b) reacting at least one high-boiling product fraction from step a) with at least one halogenide and
- c) reacting at least one high-boiling product fraction resulting from step b) with one or more compounds selected from the group consisting of alkyl halogenides, aryl halogenides and chlorosilanes.
Process for manufacturing chlorosilanes comprising the steps of:
- a) reacting at least one high-boiling product fraction from a chlorosilane synthesis with halogenides and
- b) reacting at least one high-boiling product fraction resulting from step b) with a compound selected from the group consisting of alkyl halogenides, aryl halogenides and chlorosilanes.
Dependencies are inferred from the claim text.