Halogenated polycarbosilanes and processes for preparing them
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United States of America Patent
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Jul 21, 1992
Grant Date -
N/A
app pub date -
Jun 1, 1990
filing date -
Jun 1, 1989
priority date (Note) -
Expired
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Abstract
Halogenated polycarbosilanes with uniform or mixed halogenation prepared from aryl-substituted, particularly phenyl-substituted polycarbosilanes by reaction with halogenating reagents under polar or ionic reaction conditions, optionally in the presence of a Lewis acid catalyst. The halogen atom introduced can optionally subsequently be replaced by another halogen atom through a transhalogenation reaction.
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