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