In {HEAD ~ a second embodiment} of {TAIL ~ this invention}, the crosslinkable or crosslinked composition includes 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 
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In { HEAD ~ a second embodiment } of { TAIL ~ this invention } , the crosslinkable or crosslinked composition includes 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
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