{HEAD ~ Crosslinkable organosilicon compositions} with controllable modulus can be prepared using {TAIL ~ organosilicon compounds} composed of units of the formula 
prepared using
{ HEAD ~ Crosslinkable organosilicon compositions } with controllable modulus can be prepared using { TAIL ~ organosilicon compounds } composed of units of the formula
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH