Process for producing alkylalkoxysilanes
AssigneeEvonik Operations GmbH
InventorsPhilipp Albert, Eckhard Just
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Abstract
A process produces a C3- to C20-alkyltrialkoxysilane by hydrosilylation, wherein alkoxy represents methoxy, ethoxy or propoxy. Initially, a mixture is charged of at least one hydroalkoxysilane from the group of hydrotrialkoxysilane, hydroalkyldialkoxysilane, and hydrodialkylalkoxysilane, and a Pt catalyst. The mixture is then heated to a temperature of 30° C. to 60° C. Subsequently, with mixing, an omega-unsaturated or mono-unsaturated C3- to C20-hydrocarbon, at least one carboxylic acid and at least one alcohol as cocatalysts are added to the mixture. The mixture is then reacted and subsequently worked up to obtain the product.
Claims20
A process for producing a C3- to C20-alkyltrialkoxysilane by hydrosilylation, wherein alkoxy represents methoxy, ethoxy or propoxy, the process comprising:
- a) initially charging a mixture of
- at least one hydroalkoxysilane selected from the group consisting of hydrotrialkoxysilane, hydroalkyldialkoxysilane, and hydrodialkylalkoxysilane, and
- a Pt catalyst,
- b) heating the mixture to a temperature of 30° C. to 60° C.,
- c) subsequently, with mixing, adding/metering an omega-unsaturated or mono-unsaturated C3- to C20-hydrocarbon, at least one carboxylic acid and at least one alcohol as cocatalysts, and
- d) reacting the mixture and subsequently working up the mixture.
Dependencies are inferred from the claim text.