The optical disk 2, wherein the amount of the acryloylmorpholine is from 10 to 30 parts by weight per {HEAD ~ 100 parts} by {TAIL ~ weight} of the ingredient  
by
The optical disk 2 , wherein the amount of the acryloylmorpholine is from 10 to 30 parts by weight per { HEAD ~ 100 parts } by { TAIL ~ weight } of the ingredient
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH