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

Report Date:

1971-04-01

Pagination or Media Count:

10.0

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

Subject Categories:

  • Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE