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