2) initiator for the polymerizable monomer starting {HEAD ~ materials} present in an amount from 0.1 to approximately 2 parts by weight per {TAIL ~ 100 parts} by weight of the polymerizable monomer starting materials, 
2 ) initiator for the polymerizable monomer starting { HEAD ~ materials } present in an amount from 0.1 to approximately 2 parts by weight per { TAIL ~ 100 parts } by weight of the polymerizable monomer starting materials ,
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD 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