The polymer particle 1, wherein said alkylene glycol diacrylate comprises at least one compound selected from {HEAD ~ the group} consisting of {TAIL ~ ethylene glycol diacrylate}, propylene glycol diacrylate, and mixtures thereof 
consisting of
The polymer particle 1 , wherein said alkylene glycol diacrylate comprises at least one compound selected from { HEAD ~ the group } consisting of { TAIL ~ ethylene glycol diacrylate } , propylene glycol diacrylate , and mixtures thereof
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH