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US 4,792,591 AGranted
Process for reducing the halogen content of halogen-containing polycarbosilanes and polysilanes
AssigneeWacker Chemie AG
InventorsAlfred Rengstl, Andrea Schmidhuber
Life of this patent
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Abstract
A process for reducing the halogen content of polycarbosilanes and/or polysilanes containing halogen bonded directly to silicon atoms by reacting the polymers with hexamethyldisilazane.
Claims9
A process for reducing the halogen content of polysilanes and/or polycarbosilanes containing halogen bonded directly to silicon atoms comprising reacting in solution or suspension polysilanes and/or polycarbosilanes with hexamethyldisilazane.
A process for reducing the halogen content of polysilanes of the formula RnSi and/or polycarbosilanes of the formula
- [R.sub.n Si--R'(-n)/2]
- in which R is identical or different halogen or are divalent hydrocarbon radicals of 1 to 18 carbon atoms, R' are divalent hydrocarbon of 1 to 18 carbon atoms, and n is 0, 1, 2 or 3 containing halogen bonded directly to silicon atoms comprising contacting the said polysilanes and/or polycarbosilanes with hexamethyldisilazane.
Dependencies are inferred from the claim text.