Oxodimethyldisilacyclohexadienehomopolymer

Abstract

A new siloxane polymer containing disilacyclohexadiene rings in the polymerackbone and a commercially viable method of making it are disclosed. The new polymer is an elastomer, and it has unsurpassed thermal stability. Some of the thermal, mechanical, and chemical properties of the new polymer are described.

What is claimed is: 
     
       1. The elastomer compound poly-1, 4-oxo-1, 4-dimethyl-1, 4-disilacylcohexadiene having infrared absorption bands at 2933/cm(mw), 1255/cm(m), 822/cm(m), Si--CH 3 , and 1035/cm(s), Si--O--Si, and 1340/cm(m), associated with the ring, and by proton NMR showing a singlet at 6.86 ppm for --CH--and a very close doublet at 0.18 ppm and 0.20 ppm for Si--CH 3 . 
     
     
       2. A homopolymer elastomer characterized by the repeating group having the structure: ##STR2## and having infrared absorption bands at 2933/cm(m.w), 1255/cm(m), 822/cm(m), Si--CH 3 , and 1035/cm(s), Si--O--Si, and 1340/cm(m), associated with the ring, and by proton NMR showing a singlet at 6.86 ppm for --CH-- and a very close doublet at 0.18 ppm and 0.20 ppm for Si--CH 3 .