The curable composition 1, wherein {HEAD ~ the organopolysiloxane} is {TAIL ~ a reaction product} of a mixture comprising a compound of Formula 5; and an organopolysiloxane represented by an average composition formula of Formula 6 or 7: 
is
The curable composition 1 , wherein { HEAD ~ the organopolysiloxane } is { TAIL ~ a reaction product } of a mixture comprising a compound of Formula 5 ; and an organopolysiloxane represented by an average composition formula of Formula 6 or 7 :
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL 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