In a second embodiment of this invention, the crosslinkable or {HEAD ~ crosslinked composition} includes {TAIL ~ a polyene} having at least two hydrosilation reactive carbon carbon double bonds, besides the unsaturated elastomeric polymer, and the indicated hydrosilation catalyst and silicon compound 
includes
In a second embodiment of this invention , the crosslinkable or { HEAD ~ crosslinked composition } includes { TAIL ~ a polyene } having at least two hydrosilation reactive carbon carbon double bonds , besides the unsaturated elastomeric polymer , and the indicated hydrosilation catalyst and silicon compound
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH