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