Heat Resistant Polymers Containing the Low Molecular Weight Closo-Carboranes. III. The Preparation of Polycarboranesiloxane Polymers by Alcoholysis.
CHEMICAL SYSTEMS INC SANTA ANA CALIF
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A new synthesis for carboranesiloxane polymers has been discovered. It involves the alcoholysis of the bis-chlorodimethylsilyl carborane monomers and the generation of the HCl catalyst in situ. Alcoholysis is applicable to the synthesis of most carboranesiloxane polymers with the exception of the SiB-1 homopolymers of the larger carboranes. The attack of the B-H moieties in the carborane cage can be minimized by the utilization of a tertiary alcohol or by the addition of excess acid when a primary alcohol is employed. Author
- Polymer Chemistry