Accession Number : AD0724350

Title :   Heat Resistant Polymers Containing the Low Molecular Weight Closo-Carboranes. III. The Preparation of Polycarboranesiloxane Polymers by Alcoholysis.

Descriptive Note : Technical rept.,

Corporate Author : CHEMICAL SYSTEMS INC SANTA ANA CALIF

Personal Author(s) : Kesting,Robert E. ; Jackson,Kenneth F. ; Newman,James M.

Report Date : 01 APR 1971

Pagination or Media Count : 10

Abstract : 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)

Descriptors :   (*ELASTOMERS, INORGANIC POLYMERS), (*INORGANIC POLYMERS, SYNTHESIS(CHEMISTRY)), (*HEAT RESISTANT PLASTICS, INORGANIC POLYMERS), (*SILICONES, SYNTHESIS(CHEMISTRY)), HEAT RESISTANT PLASTICS, ALCOHOLS, BORON COMPOUNDS, POLYMERIZATION, CHLORIDES, SILANES

Subject Categories : Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE