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Heat‐resistant polymers containing the low molecular weight closo ‐carboranes. III. The preparation of polycarboranesiloxane polymers by alcoholysis
Author(s) -
Kesting R. E.,
Jackson K. F.,
Newman J. M.
Publication year - 1971
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1971.070151104
Subject(s) - carborane , polymer , monomer , polymer chemistry , catalysis , siloxane , alcohol , organic chemistry , materials science , chemistry
A new synthesis for carboranesiloxane polymers has been discovered. It involves the alcoholysis of the bischlorodimethylsilylcarborane monomers and the generation of the HCl catalyst in situ. Alcoholysis is applicable to the synthesis of most carborane‐siloxane polymers, with the probable exception of the SiB‐1 homopolymers of the larger carboranes. The attack of the BH moieties in the carborane cage can be minimized both by the utilization of a tertiary alcohol and by the addition of excess acid when a primary alcohol is employed.