Polycarbosilanes and process for preparing them
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United States of America Patent
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Apr 20, 1993
Grant Date -
N/A
app pub date -
Jun 4, 1991
filing date -
Jun 8, 1990
priority date (Note) -
Expired
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Abstract
Polycarbosilanes having Si units which are linked by phenyl-substituted methylene bridges or by partially or completely fluorinated hydrocarbon bridges. These polycarbosilanes are obtained by a Grignard polycondensation reaction. If phenyl substituents are present on the silicon atoms of the polycarbosilanes, they may also optionally be exchanged for halogen atoms in additional halogenating reactions, so that polycarbosilanes can be prepared which are both fluorinated on the hydrocarbon bridges and halogenated (particularly fluorinated) on the silicon atoms.
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