Carbon-containing black glass from hydrosilylation-derived siloxanes

Claim 1

A precursor polymer of a black glass ceramic, said polymer being the product of reacting compounds containing silicon-vinyl bonds with compounds containing silicon-hydride bonds, in the presence of catalytically effective amount of a hydrosilylation catalyst, said compounds being (a) cyclosiloxanes of the formula ##STR5## where n is an integer from 3 to about 20, R and R' are independently selected from hydrogen, an unsubstituted vinyl group, a substituted vinyl group, an alkyl group have 1 to 20 carbon atoms, or aryl and where said siloxane contains at least two of either or both of hydrogen and substituted or unsubstituted vinyl groups and (b) non-cyclic siloxanes having the formula ##STR6## R 1 ,R 2 , and R 3 are independently selected from hydrogen, an unsubstituted vinyl group, a substituted vinyl group, an alkyl group having 1 to 20 carbon atoms, or aryl and where said siloxane contains at least two of either or both of hydrogen and unsubstituted or substituted vinyl groups m is an integer from 0 to 1,000.